subject:(Diesel)

Universidade Estadual de Campinas

1. Hernandes, Marcelo Rocha. Estudo dos componentes auxiliares de partida a frio de motores movidos a Diesel: Study of auxiliary components of cold start in Diesel engines.

Degree: 2011, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/264377

► Abstract: Cold start in Diesel engines is a problem which has not yet been properly solved and becomes particularly critical with the current trend to… (more)

Subjects/Keywords: Motor diesel; Diesel engine

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APA (6^th Edition):

Hernandes, M. R. (2011). Estudo dos componentes auxiliares de partida a frio de motores movidos a Diesel: Study of auxiliary components of cold start in Diesel engines. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/264377

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hernandes, Marcelo Rocha. “Estudo dos componentes auxiliares de partida a frio de motores movidos a Diesel: Study of auxiliary components of cold start in Diesel engines.” 2011. Thesis, Universidade Estadual de Campinas. Accessed March 04, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264377.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hernandes, Marcelo Rocha. “Estudo dos componentes auxiliares de partida a frio de motores movidos a Diesel: Study of auxiliary components of cold start in Diesel engines.” 2011. Web. 04 Mar 2021.

Vancouver:

Hernandes MR. Estudo dos componentes auxiliares de partida a frio de motores movidos a Diesel: Study of auxiliary components of cold start in Diesel engines. [Internet] [Thesis]. Universidade Estadual de Campinas; 2011. [cited 2021 Mar 04]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/264377.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hernandes MR. Estudo dos componentes auxiliares de partida a frio de motores movidos a Diesel: Study of auxiliary components of cold start in Diesel engines. [Thesis]. Universidade Estadual de Campinas; 2011. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/264377

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

2. Murugesan A. Experimental and theoretical Investigation of using bio diesel in Diesel engines;.

Degree: Experimental and theoretical Investigation of using bio diesel in Diesel engines, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/35505

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newlineEver increasing consumption of fossil fuel and petroleum products newlinehas been a matter of great concern for India The huge out go of foreign newlineexchange… (more)

Subjects/Keywords: Bio diesel; Diesel engines

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APA (6^th Edition):

A, M. (2015). Experimental and theoretical Investigation of using bio diesel in Diesel engines;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/35505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

A, Murugesan. “Experimental and theoretical Investigation of using bio diesel in Diesel engines;.” 2015. Thesis, Anna University. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/35505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

A, Murugesan. “Experimental and theoretical Investigation of using bio diesel in Diesel engines;.” 2015. Web. 04 Mar 2021.

Vancouver:

A M. Experimental and theoretical Investigation of using bio diesel in Diesel engines;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/35505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

A M. Experimental and theoretical Investigation of using bio diesel in Diesel engines;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/35505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat Politècnica de València

3. GARZA DE LEON, OSCAR ALEJANDRO DE LA. Estudio de los efectos de la cavitación en toberas de inyección diesel sobre el proceso de inyección y el de formación de hollín .

Degree: 2012, Universitat Politècnica de València

URL: http://hdl.handle.net/10251/18153

► En un motor diesel, la mayoría de los mecanismos físico-químicos vinculados al proceso de combustión dependen directamente de las características del proceso de inyección de… (more)

▼ En un motor diesel, la mayoría de los mecanismos físico-químicos vinculados al proceso de combustión dependen directamente de las características del proceso de inyección de combustible. Además de las condiciones de funcionamiento (presión y ley de inyección, densidad del aire en el cilindro), el tamaño y la geometría de los orificios de las toberas de inyección tienen un efecto importante sobre este proceso. Aunque no es la única, la principal consecuencia de la geometría de los orificios sobre el proceso de inyección es la presencia o ausencia del fenómeno de la cavitación. El presente trabajo parte de una revisión de la bibliografía existente relacionada con el fenómeno de la cavitación, en donde se puede concluir que existen relativamente pocos estudios que se hayan centrado en estudiar las consecuencias de la presencia de la cavitación sobre los diferentes aspectos de los mecanismos de inyección, de evaporación, y de formación de hollín. Algunos de estos pocos estudios han mostrado que, adicionalmente al colapso del caudal másico (que es el efecto más observado) la presencia de la cavitación conlleva un aumento significativo de la velocidad efectiva de inyección, así como una aceleración del proceso de mezcla y de combustión. Con el fin de confirmar estas constataciones experimentales se define como objetivo principal de la presente tesis el profundizar en el conocimiento de la influencia de la cavitación en toberas de inyección diesel sobre el proceso de inyección, el de mezcla y el de formación de hollín. Para la consecución del objetivo antes descrito, el presente estudio se ha dividido en tres partes en las que se han utilizado, por un lado, dos toberas de tres orificios, una con un elevado nivel de cavitación (tobera cilíndrica) y otra en la que se inhibe el fenómeno de la cavitación (tobera cónica), y, por otro lado, herramientas experimentales y teóricas. En la primera parte, se ha estudiado primero el efecto de la cavitación sobre la velocidad efectiv Advisors/Committee Members: López Sánchez, José Javier (advisor), Cavitación (advisor), Velocidad efectiva de inyección (advisor), Proceso de mezcla (advisor), Formación de hollín (advisor).

Subjects/Keywords: Tobera diesel

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APA (6^th Edition):

GARZA DE LEON, O. A. D. L. (2012). Estudio de los efectos de la cavitación en toberas de inyección diesel sobre el proceso de inyección y el de formación de hollín . (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/18153

Chicago Manual of Style (16^th Edition):

GARZA DE LEON, OSCAR ALEJANDRO DE LA. “Estudio de los efectos de la cavitación en toberas de inyección diesel sobre el proceso de inyección y el de formación de hollín .” 2012. Doctoral Dissertation, Universitat Politècnica de València. Accessed March 04, 2021. http://hdl.handle.net/10251/18153.

MLA Handbook (7^th Edition):

GARZA DE LEON, OSCAR ALEJANDRO DE LA. “Estudio de los efectos de la cavitación en toberas de inyección diesel sobre el proceso de inyección y el de formación de hollín .” 2012. Web. 04 Mar 2021.

Vancouver:

GARZA DE LEON OADL. Estudio de los efectos de la cavitación en toberas de inyección diesel sobre el proceso de inyección y el de formación de hollín . [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10251/18153.

Council of Science Editors:

GARZA DE LEON OADL. Estudio de los efectos de la cavitación en toberas de inyección diesel sobre el proceso de inyección y el de formación de hollín . [Doctoral Dissertation]. Universitat Politècnica de València; 2012. Available from: http://hdl.handle.net/10251/18153

4. Anandavelu K. Experimental investigation on the performance, combustion and emission characteristics of DI diesel engine powered by biofuels.

Degree: Mechanical Engineering, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/16684

►

The demand for the energy has increased drastically as a result of the rapid growth in industrialisation, urbanisation and higher standard of living. The present… (more)

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The demand for the energy has increased drastically as a result of the rapid growth in industrialisation, urbanisation and higher standard of living. The present fossil fuel crisis associated with increase in vehicle population is posing a challenge all over the world. The augmentation of the use of automobiles manifold every year and the tail pipe emissions are also increasing abnormally leading to air pollution and human health degradation. Scientists and researchers have to focus their attention on finding an ecofriendly, energy efficient fuel to replace fossil fuel, particularly diesel in transport sectors. The main objective of the present work is to use alternative fuels which are renewable in nature and performing better than Diesel Fuel (DF). Our context is to utilize biofuels namely eucalyptus oil and turpentine oil as a replacement to diesel fuel. In first phase, the work was carried out to analyse the performance, combustion and emission characteristics of direct injection diesel engine powered by blends of eucalyptus oil with diesel fuel and standard DF operated with standard Compression Ratio (CR 17.5) and various compression ratios (CR15, CR16, CR17 and CR18). For this purpose, five different blends containing 10, 20, 30, 40 and 50 % of eucalyptus oil with diesel fuel were prepared in volume basis and tested in engine run with standard compression ratio (CR 17.5). Results indicated that the Brake Thermal Efficiency (BTE) is increased about 6.2% for 60:40 Diesel Fuel / Eucalyptus Oil Fuel (DF/EOF) blend as compared to DF. Further the results showed that 60:40 DF/EOF blend has 16.7%, 25 % and 15.15% reduction of smoke, Carbonmonoxide (CO) and Unburnt Hydrocarbon (UBHC) emission as compared to standard DF at full load condition respectively. Oxides of Nitrogen (NOX) emission is slightly reduced for this blend as compared to DF. The heat release rate and cylinder pressures are increased positively.

Appendix p.168-178, References p.179-191

Advisors/Committee Members: Alagumurthi N.

Subjects/Keywords: Biofuels; Diesel engine; Diesel Fuel; Mechanical Engineering

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APA (6^th Edition):

K, A. (2014). Experimental investigation on the performance, combustion and emission characteristics of DI diesel engine powered by biofuels. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/16684

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

K, Anandavelu. “Experimental investigation on the performance, combustion and emission characteristics of DI diesel engine powered by biofuels.” 2014. Thesis, Anna University. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/16684.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

K, Anandavelu. “Experimental investigation on the performance, combustion and emission characteristics of DI diesel engine powered by biofuels.” 2014. Web. 04 Mar 2021.

Vancouver:

K A. Experimental investigation on the performance, combustion and emission characteristics of DI diesel engine powered by biofuels. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16684.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

K A. Experimental investigation on the performance, combustion and emission characteristics of DI diesel engine powered by biofuels. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16684

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Estado do Rio de Janeiro

5. Adriana Palmeiro de Vasconcelos. Compostos de enxofre em misturas de diesel e biodiesel.

Degree: Master, 2008, Universidade do Estado do Rio de Janeiro

URL: http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6521 ;

►

É difundido na literatura especializada que o uso de misturas de biodiesel e diesel de petróleo reduz as emissões dos compostos de enxofre. Esses compostos… (more)

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É difundido na literatura especializada que o uso de misturas de biodiesel e diesel de petróleo reduz as emissões dos compostos de enxofre. Esses compostos são responsáveis por inúmeras enfermidades respiratórias, além de provocar danos ao catalisador automotivo, contribuindo desta forma para a emissão de outros poluentes. Neste trabalho fez-se uma identificação dos compostos de enxofre, antes da queima no motor, presentes no diesel e em misturas de biodiesel/diesel de diferentes fontes. A metodologia empregada foi a cromatografia de fase gasosa e inicialmente empregou-se um detector de ionização por chama de hidrogênio para ajuste das condições operacionais, por ser um detector considerado universal e capaz de identificar tanto os majoritários hidrocarbonetos como os compostos de enxofre. Em seguida aplicou-se os parâmetros operacionais obtidos a um cromatógrafo à gás acoplado a um detector seletivo para enxofre, o SCD (sulphur chemiluminescence detector) para a identificação apenas dos compostos de enxofre. Após a obtenção dos dados teóricos em laboratório, foi realizada a análise de compostos mercaptídicos produzidas pelas emissões de um ônibus do Rio de Janeiro abastecido com diesel puro e misturas diesel/biodiesel nas proporções (v/v) 2% (B2), 5% (B5), 10% (B10), and 20% (B20). Os resultados indicaram uma redução dos compostos de enxofre proporcional à adição do biodiesel tanto na teoria quanto na prática

The mixing of biodiesel and petroleum diesel is being widely used as an attempt to reduce the emissions of sulfur compounds. These compounds are responsible for pollution, causing several diseases, as some breath problems. Sulfur compounds cause car catalyst poisoning and deactivation of processing, contributing with undesirable emissions of other toxic compounds. The goal of this work was to identify sulfur compounds in diesel and in some biodiesel mixtures of different sources. Gas chromatography system coupled with FID (flame ionization detector) was the methodology initially employed, for adjustment of the operational conditions, since FID is a low selectivity detector capable of identifying sulfur compounds and the majority of hydrocarbons. For the sulfur identification, a selective detector for sulfur compounds was employed (SCD - sulfur chemiluminescence detector). After the initial tests realized in the lab, analyses were carried out in a typical Brazilian urban bus fleet, to quantify the presence of mercaptans. The bus was fueled with pure diesel and with different biodiesel blends (v v) of 2% (B2), 5% (B5), 10% ( B10) and 20% (B20). The samples were collected from a real bus in use. Obtained results showed that the addition of biodiesel decreases proportionally the presence of sulfur compounds

Advisors/Committee Members: Mônica Regina da Costa Marques, Sérgio Machado Corrêa, Cleber Vinicius Ursini.

Subjects/Keywords: Enxofre; diesel; biodiesel; Sulfur; diesel; biodiesel; QUIMICA

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APA (6^th Edition):

Vasconcelos, A. P. d. (2008). Compostos de enxofre em misturas de diesel e biodiesel. (Masters Thesis). Universidade do Estado do Rio de Janeiro. Retrieved from http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6521 ;

Chicago Manual of Style (16^th Edition):

Vasconcelos, Adriana Palmeiro de. “Compostos de enxofre em misturas de diesel e biodiesel.” 2008. Masters Thesis, Universidade do Estado do Rio de Janeiro. Accessed March 04, 2021. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6521 ;.

MLA Handbook (7^th Edition):

Vasconcelos, Adriana Palmeiro de. “Compostos de enxofre em misturas de diesel e biodiesel.” 2008. Web. 04 Mar 2021.

Vancouver:

Vasconcelos APd. Compostos de enxofre em misturas de diesel e biodiesel. [Internet] [Masters thesis]. Universidade do Estado do Rio de Janeiro; 2008. [cited 2021 Mar 04]. Available from: http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6521 ;.

Council of Science Editors:

Vasconcelos APd. Compostos de enxofre em misturas de diesel e biodiesel. [Masters Thesis]. Universidade do Estado do Rio de Janeiro; 2008. Available from: http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=6521 ;

6. Chevarría Mar, Alvaro Rodrigo. Efectos de la restricción parcial del aire de admisión e incremento de la temperatura de la mezcla aire-gas natural en un motor diesel funcionando en el modo diesel/gas.

Degree: 2017, Pontificia Universidad Católica del Perú

URL: http://tesis.pucp.edu.pe/repositorio/handle/123456789/9509

►

Un motor Diesel funcionando en modo Diesel/gas y a cargas bajas tiende a disminuir su rendimiento y producir más emisiones de hidrocarburos (HC) y monóxido… (more)

Subjects/Keywords: Motores diesel – Combustión; Motores diesel – Contaminantes

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APA (6^th Edition):

Chevarría Mar, A. R. (2017). Efectos de la restricción parcial del aire de admisión e incremento de la temperatura de la mezcla aire-gas natural en un motor diesel funcionando en el modo diesel/gas. (Masters Thesis). Pontificia Universidad Católica del Perú. Retrieved from http://tesis.pucp.edu.pe/repositorio/handle/123456789/9509

Chicago Manual of Style (16^th Edition):

Chevarría Mar, Alvaro Rodrigo. “Efectos de la restricción parcial del aire de admisión e incremento de la temperatura de la mezcla aire-gas natural en un motor diesel funcionando en el modo diesel/gas.” 2017. Masters Thesis, Pontificia Universidad Católica del Perú. Accessed March 04, 2021. http://tesis.pucp.edu.pe/repositorio/handle/123456789/9509.

MLA Handbook (7^th Edition):

Chevarría Mar, Alvaro Rodrigo. “Efectos de la restricción parcial del aire de admisión e incremento de la temperatura de la mezcla aire-gas natural en un motor diesel funcionando en el modo diesel/gas.” 2017. Web. 04 Mar 2021.

Vancouver:

Chevarría Mar AR. Efectos de la restricción parcial del aire de admisión e incremento de la temperatura de la mezcla aire-gas natural en un motor diesel funcionando en el modo diesel/gas. [Internet] [Masters thesis]. Pontificia Universidad Católica del Perú 2017. [cited 2021 Mar 04]. Available from: http://tesis.pucp.edu.pe/repositorio/handle/123456789/9509.

Council of Science Editors:

Chevarría Mar AR. Efectos de la restricción parcial del aire de admisión e incremento de la temperatura de la mezcla aire-gas natural en un motor diesel funcionando en el modo diesel/gas. [Masters Thesis]. Pontificia Universidad Católica del Perú 2017. Available from: http://tesis.pucp.edu.pe/repositorio/handle/123456789/9509

Oregon State University

7. Caple, Kevin R. Oxidative desulfurization of dibenzothiophene with tert-butyl peroxide in a carbon nanotube supported corona discharge microreactor.

Degree: MS, Chemical Engineering, 2010, Oregon State University

URL: http://hdl.handle.net/1957/18811

► Sulfur content in fuel is an increasingly important environmental concern. A commonly used method for the removal of sulfur bearing species from fuel is through… (more)

▼ Sulfur content in fuel is an increasingly important environmental concern. A commonly used method for the removal of sulfur bearing species from fuel is through hydrodesulphurization. However, due to the implementation of Ultra-Low Diesel Sulfur (ULDS), deeper desulphurization techniques must be explored. In this study, a single phase oxidative desulphurization microreactor is crafted for this purpose. The proposed microreactor is built around the concept of corona discharge. The corona is created through a significant potential difference between a carbon nanotube supported emitter electrode and a stainless steel collector electrode. The current that passes through the two electrodes acts as a catalytic agent for the oxidation of the sulfur bearing species. Dibenzothiophene and tert-butyl peroxide are mixed with decane into two separate feed streams. The two feed streams are sent through a micromixer and continue into the reactor. The reactor system is activated and current flows within the reaction volume between the two electrodes. The proposed reaction mechanism is similar to that of the photooxidation of dibenzothiophene in which the peroxide is cleaved by the electrical energy and subsequently reacts with the sulfur to form its oxides, sulfoxides and sulfones, respectively. Due to the high polarity of these products, they are easily extracted from the fuel stream. Experiments testing the capabilities of the proposed reactor include varying the applied current to the reaction volume, inlet concentrations of both the fuel and oxidant streams, the reactor volume residence time, the post-reactor volume residence time, and the effect of aging upon the oxidant stream. This proposed microreactor was successfully crafted and the corona successfully discharged between the emitter and collector electrodes. Testing of the reactor's capabilities suggest that the proposed oxidation mechanism is not strictly duplicated within this microreactor system. For this first generation reactor system, a maximum conversion of 68% of dibenzothiophene to its sulfoxide and sulfone has been found. Dissolved oxygen in decane was also found to be a sufficient oxidant source to initiate the oxidative reaction and has been shown to continue to be an oxidant source even in the presence of peroxide. Advisors/Committee Members: Yokochi, Alexandre (advisor).

Subjects/Keywords: Diesel fuels – Desulfurization

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APA (6^th Edition):

Caple, K. R. (2010). Oxidative desulfurization of dibenzothiophene with tert-butyl peroxide in a carbon nanotube supported corona discharge microreactor. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/18811

Chicago Manual of Style (16^th Edition):

Caple, Kevin R. “Oxidative desulfurization of dibenzothiophene with tert-butyl peroxide in a carbon nanotube supported corona discharge microreactor.” 2010. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/18811.

MLA Handbook (7^th Edition):

Caple, Kevin R. “Oxidative desulfurization of dibenzothiophene with tert-butyl peroxide in a carbon nanotube supported corona discharge microreactor.” 2010. Web. 04 Mar 2021.

Vancouver:

Caple KR. Oxidative desulfurization of dibenzothiophene with tert-butyl peroxide in a carbon nanotube supported corona discharge microreactor. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/18811.

Council of Science Editors:

Caple KR. Oxidative desulfurization of dibenzothiophene with tert-butyl peroxide in a carbon nanotube supported corona discharge microreactor. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/18811

8. CRUZ, Geórgia Gomes da. Tratamento biológico de óleo diesel por consórcio fúngico .

Degree: 2017, Universidade Federal de Pernambuco

URL: https://repositorio.ufpe.br/handle/123456789/28012

► Pesquisas têm sido fomentadas em busca de alternativas ecologicamente e economicamente viáveis para tratar ambientes impactados por petroderivados, como a biorremediação. Este trabalho teve como… (more)

▼ Pesquisas têm sido fomentadas em busca de alternativas ecologicamente e economicamente viáveis para tratar ambientes impactados por petroderivados, como a biorremediação. Este trabalho teve como objetivo investigar a capacidade de um consórcio fúngico que apresente potencial para degradar óleo diesel, estabelecendo as condições adequadas em processo de biorremediação ex situ. Para estabelecer condições mais promissoras de fatores nutricionais e físico-químicos foram utilizados planejamentos fatoriais, permitindo testar simultaneamente variáveis como: pH, concentrações de inóculo, glicerol e nitrato de amônia. Ao final dos ensaios foram avaliadas as variáveis resposta: a degradação de hidrocarbonetos por cromatografia gasosa e análise da toxicidade dos subprodutos sobre células vegetais e células humanas mononucleares de sangue periférico. Tendo conhecimento da melhor condição para o processo de biodegradação, essa foi aplicada em experimentos em biorreator para tratar um volume maior e em condições controladas. O consórcio foi formado pelos fungos Cunninghamella elegans, Rhizopus arrhizus e Aspergillus niger, pois, além da capacidade de degradação não apresentaram interação negativa. A melhor condição encontrada nos ensaios realizados em frascos (volume total 100mL), contendo 10% de óleo diesel, foi: 1 bloco de gelose de Cunninghamella elegans, 1 bloco de gelose de Rhizopus arrhizus e 2 blocos de gelose de Aspergillus niger, 1,5 g/L de NH₄NO₃, 2 mL de glicerol, pH inicial de 8,5. A degradação do óleo diesel alcançou média de degradação de até 97,41% em biorreator, enquanto alguns hidrocarbonetos foram degradados completamente. A toxicidade do material residual do processo também foi reduzida quando comparada ao poluente, permitindo a germinação das sementes testadas e resistência das células mononucleadas do sangue periférico humano. Sendo assim, o consórcio fúngico apresenta potencial para ser utilizado em processos de biorremediação de locais contaminados por óleo diesel. Advisors/Committee Members: SILVA, Teresinha Gonçalves da (advisor), GUSMÃO, Norma Buarque de (advisor), http://lattes.cnpq.br/8298663599011575 (advisor).

Subjects/Keywords: Biorremediação; Diesel; Fungos

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APA (6^th Edition):

CRUZ, G. G. d. (2017). Tratamento biológico de óleo diesel por consórcio fúngico . (Doctoral Dissertation). Universidade Federal de Pernambuco. Retrieved from https://repositorio.ufpe.br/handle/123456789/28012

Chicago Manual of Style (16^th Edition):

CRUZ, Geórgia Gomes da. “Tratamento biológico de óleo diesel por consórcio fúngico .” 2017. Doctoral Dissertation, Universidade Federal de Pernambuco. Accessed March 04, 2021. https://repositorio.ufpe.br/handle/123456789/28012.

MLA Handbook (7^th Edition):

CRUZ, Geórgia Gomes da. “Tratamento biológico de óleo diesel por consórcio fúngico .” 2017. Web. 04 Mar 2021.

Vancouver:

CRUZ GGd. Tratamento biológico de óleo diesel por consórcio fúngico . [Internet] [Doctoral dissertation]. Universidade Federal de Pernambuco; 2017. [cited 2021 Mar 04]. Available from: https://repositorio.ufpe.br/handle/123456789/28012.

Council of Science Editors:

CRUZ GGd. Tratamento biológico de óleo diesel por consórcio fúngico . [Doctoral Dissertation]. Universidade Federal de Pernambuco; 2017. Available from: https://repositorio.ufpe.br/handle/123456789/28012

Universidade do Porto

9. Lavandeira, Filipe Manuel Rodrigues Azevedo. Optimização da gestão electrónica de um motor a gasóleo para o biodiesel.

Degree: 2010, Universidade do Porto

URL: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59250

Tese de mestrado integrado. Engenharia Mecânica. Faculdade de Engenharia. Universidade do Porto. 2010 Advisors/Committee Members: Duarte, José Manuel Ferreira, Universidade do Porto. Faculdade de Engenharia.

Subjects/Keywords: Biodiesel; Motores diesel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lavandeira, F. M. R. A. (2010). Optimização da gestão electrónica de um motor a gasóleo para o biodiesel. (Thesis). Universidade do Porto. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59250

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lavandeira, Filipe Manuel Rodrigues Azevedo. “Optimização da gestão electrónica de um motor a gasóleo para o biodiesel.” 2010. Thesis, Universidade do Porto. Accessed March 04, 2021. http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59250.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lavandeira, Filipe Manuel Rodrigues Azevedo. “Optimização da gestão electrónica de um motor a gasóleo para o biodiesel.” 2010. Web. 04 Mar 2021.

Vancouver:

Lavandeira FMRA. Optimização da gestão electrónica de um motor a gasóleo para o biodiesel. [Internet] [Thesis]. Universidade do Porto; 2010. [cited 2021 Mar 04]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59250.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lavandeira FMRA. Optimização da gestão electrónica de um motor a gasóleo para o biodiesel. [Thesis]. Universidade do Porto; 2010. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59250

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

10. Harvey, Alexis Nadine. Toxicity of petroleum hydrocarbons in polar soil.

Degree: 2011, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-04042011-134956

► The objective of this research is to determine the influence of liquid water content on the toxicity of petroleum hydrocarbons (PHC) to soil microorganisms in… (more)

▼ The objective of this research is to determine the influence of liquid water content on the toxicity of petroleum hydrocarbons (PHC) to soil microorganisms in frozen soil. This research was conducted on soil collected from an aged diesel fuel spill site at Casey Station, East Antarctica, as well as on spiked diesel contaminated soil from Macquarie Island, a sub-Antarctic island. Suitable soil biogeochemical toxicity endpoints for PHC contamination were identified using sub-Antarctic soil from Macquarie Island spiked with diesel fuel. The sensitivity of nitrification, denitrification, carbohydrate utilization and total soil respiration to diesel fuel was assessed. Potential nitrification activity (PNA) was the most sensitive indicator of contamination assessed for nitrogen cycling, with a PHC concentration effecting microbial activity by 20% of the control response, EC20, of 190 mg PHC kg-1 soil. Petroleum hydrocarbon toxicity in polar soil was assessed by sampling 32 locations at an aged diesel spill site at Casey Station, East Antarctica. Samples were taken nine times throughout an austral summer to encompass frozen, thaw and refreeze periods. Toxicity was assessed using potential activities of substrate induced respiration, total respiration, nitrification, denitrification, and metabolic quotient, as well as microbial community composition and bacterial biomass. The most sensitive indicator was community composition with an EC25 of 800 mg kg-1, followed by nitrification (2000 mg kg-1), microbial biomass (2400 mg kg-1) and soil respiration (3500 mg kg-1). Despite changes in potential microbial activities and composition over the frozen/thaw/refreeze period, the sensitivity of these endpoints to PHC did not change with liquid water or temperature. The influence of liquid water (èliquid) on nutrient supply rate and gas diffusion, which are important factors in microbial degradation of PHC, was determined using contaminated soil from Casey Station. Freezing reduced nutrient supply rate of both NH4+ and NO3-. However, an increase in èliquid was linked to increases in nitrate and ammonia nutrient supply rates in frozen soil. Similarly for gas diffusion, decreases in Ds due to freezing were much more pronounced in soils with low èliquid compared to soils with higher èliquid contents. Further research is needed to determine whether bioremediation in cold regions could be enhanced during the period of time where the soil temperature is below 0 °C by controlling factors that increase the amount of liquid water. The influence of liquid water content on the in situ toxicity of PHC to soil microorganisms was evaluated using stable isotope dilution technique to measure gross mineralization and nitrification, which was compared to the toxicity endpoints of potential microbial activities. Liquid water content did not have a significant effect on either gross mineralization or nitrification. Gross nitrification was sensitive to PHC contamination, with toxicity decreasing over time. The EC25 value for gross… Advisors/Committee Members: Siciliano, Steven Douglas, Smolders, Erik, Wickstrom, Mark, Pomeroy, John, Si, Bing, Blakley, Barry.

Subjects/Keywords: ecotoxicity; Antarctica; diesel

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APA (6^th Edition):

Harvey, A. N. (2011). Toxicity of petroleum hydrocarbons in polar soil. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-04042011-134956

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Harvey, Alexis Nadine. “Toxicity of petroleum hydrocarbons in polar soil.” 2011. Thesis, University of Saskatchewan. Accessed March 04, 2021. http://hdl.handle.net/10388/etd-04042011-134956.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Harvey, Alexis Nadine. “Toxicity of petroleum hydrocarbons in polar soil.” 2011. Web. 04 Mar 2021.

Vancouver:

Harvey AN. Toxicity of petroleum hydrocarbons in polar soil. [Internet] [Thesis]. University of Saskatchewan; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10388/etd-04042011-134956.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Harvey AN. Toxicity of petroleum hydrocarbons in polar soil. [Thesis]. University of Saskatchewan; 2011. Available from: http://hdl.handle.net/10388/etd-04042011-134956

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

11. Bajjalieh, Joseph W. Forecasting diesel fuel prices.

Degree: MS, 0176, 2011, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/18393

► Midwest agriculture depends heavily on corn, soybean, and wheat production which requires considerable diesel fuel to meet producer output objectives. An ability to anticipate fuel… (more)

▼ Midwest agriculture depends heavily on corn, soybean, and wheat production which requires considerable diesel fuel to meet producer output objectives. An ability to anticipate fuel price movements may allow producers, farm managers, and fuel distributors to better plan their transactions to reduce costs or to hedge against price change. Despite potential gains from understanding diesel fuel price movements, little research has been performed to generate and assess diesel price forecasts. This research focuses on developing and evaluating the effectiveness of futures-based, structural-based, and time-series models to forecast diesel prices. Several composite forecast techniques, such as averaging, least squared regressions, and Harvey, Leybourne, and Newbold encompassing procedures also are evaluated to determine if they can improve forecasting performance. Models are specified and evaluated during an in-sample period, March 1994-February 2002, for one-, two-, and three-month forecast horizons. Using the in-sample specifications that are re-estimated each month for an out-of-sample period, March 2002-December 2008, diesel fuel price forecasts are developed and assessed. For the out-of-sample period, models are re-estimated recursively, and by using 4-year, 8-year rolling-window regressions to allow for the effects of structural change on forecast performance. During the in-sample period, no individual model consistently outperforms its rivals. However, composite forecasting methods improve forecast precision, but they are not statistically superior to the individual forecasts. Further, composite methods are generally not able to anticipate price changes as well as the individual models, which are led by the ARIMA specification. During the out-of-sample period, model performance decreases relative to the earlier period as new information and events emerge. In particular, mean squared errors gradually increase throughout the out-of-sample period. Among the models, forecast errors are highly correlated and anticipated information gains from combining forecasts do not arise. As a reflection of changing market conditions, 4-year rolling-window estimates clearly dominate forecast performance for all models and forecast horizons. Despite coefficients that are rarely significant, relative inventory-based models consistently are most accurate, suggesting the importance of allowing for inventories particularly in periods of low stocks and high prices. Interestingly, most models are able to anticipate price changes relatively well, with crude oil futures-based and time series models correctly identifying the direction of price change 60-80 percent of the time. Clearly, forecasting in periods of structural change is challenging. The research here suggests forecasts based on a relatively short rolling-window framework provide the most precise diesel fuel price estimates which are able to identify the direction of price change with reasonable accuracy. Further research may find it useful to consider allowing… Advisors/Committee Members: Garcia, Philip (advisor).

Subjects/Keywords: Forecasting; Diesel prices

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APA (6^th Edition):

Bajjalieh, J. W. (2011). Forecasting diesel fuel prices. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/18393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bajjalieh, Joseph W. “Forecasting diesel fuel prices.” 2011. Thesis, University of Illinois – Urbana-Champaign. Accessed March 04, 2021. http://hdl.handle.net/2142/18393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bajjalieh, Joseph W. “Forecasting diesel fuel prices.” 2011. Web. 04 Mar 2021.

Vancouver:

Bajjalieh JW. Forecasting diesel fuel prices. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2142/18393.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bajjalieh JW. Forecasting diesel fuel prices. [Thesis]. University of Illinois – Urbana-Champaign; 2011. Available from: http://hdl.handle.net/2142/18393

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Limerick

12. Madden, Orla. Investigation of first generation biofuels in diesel engines.

Degree: 2011, University of Limerick

URL: http://hdl.handle.net/10344/1967

►

peer-reviewed

In an AC1W IDI Lister Petter diesel engine, ignition delay reduced exponentially with an increase in engine speed for hempseed oil (HSO), camelina seed… (more)

▼

peer-reviewed

In an AC1W IDI Lister Petter diesel engine, ignition delay reduced exponentially with an increase in engine speed for hempseed oil (HSO), camelina seed oil (CSO) and rapeseed oil (RSO). The polyunsaturated fuels HSO produced ignition delays which were 0.6 to 12.4%, 18.7 to 32.1% and 10.8 to 26.8% longer than RSO, rapeseed methyl ester (RME) and mineral diesel (MD) fuel respectively whilst CSO produced ignition delays which were 0 to 9.8%, 18.4 to 29.1% and 11.8 to 24.8% longer than RSO, RME and MD fuel respectively. Ignition delays increased with a 5o Crank Angle (CA) advance in fuel injection timing by 2.7 to 19.2%, 0.9 to 11.1% and 0.12 to 17.0% for RSO, CSO and HSO respectively. A reduction in ignition delay was noted for RSO, CSO and HSO by 5 to 7.1%, 1.4 to 9.5% and 7.9 to 13.5% except above 3100rpm at 5 °CA retarded fuel injection timing. Maximum power outputs of HSO (4.12kW), and CSO(4.38kW) were lower when compared with MD fuel (4.43kW) however maximum power outputs for RSO (4.47kW) and RME (4.63kW) were both higher when compared with MD fuel (4.43kW) at standard fuel injection timing. After 28 days HSO, CSO, RME and WCOME increased in acid value from 8.1 to 178.4% and peroxide value varied from -63.64% to 321.85%. Ignition delay, combustion chamber peak pressure signal and rate of pressure rise were unaffected by storage of the oils. Advancing fuel injection timing by 5 °CA in a 1.5L Tempest (BMC) engine had no significant effect on the power, torque and BMEP for RME, NOx and smoke emissions increased by 10.7 to 41.5% and by 24.5 to 74.3% respectively and CO reduced by 14.4 to 21.6% at BMEP<250kPa; but mean CO was higher by 1.2 to 21.9% for RME for 500kPa>BMEP>250kPa. HSO and CSO gave 4.9% and 5.6% higher maximum power than RSO, 12.6% and 13.3% more than RME and WCOME and 17.4% and 18.1% more than MD fuel respectively in a 1.8L NA IDI Ford Courier. HSO used 2.6 to 15.9% and 1.8 to 11.2% more fuel than RME and WCOME respectively whilst CSO used 2.1 to 16.3% and 2.1 to 12% more fuel than RME and WCOME respectively except above 3700rpm. HSO and CSO used 9.1 to 42.6% and 0 to 43.1% more fuel than MD fuel for all engine speeds. Mean NOx increased by 11.4 to 40.2% for HSO and 15.7 to 35.1% for CSO above 1800rpm compared with RME. NOx was higher by 11.9 to 34.6% for HSO and by 16.2 to 29.7% higher for CSO for all engine speeds than WCOME. Both HSO and CSO increased NOx by 6.9 to 55.1% and 5.1 to 56.9% compared with MD fuel above 1800rpm. RME and WCOME gave 2.2 to 26.7% and 1.8 to 25% greater NOx respectively than MD fuel above 3750rpm. After 492kWh use, RME gave carbon deposits on cylinder head, valves, piston crown and fuel injector in a 2kW DI diesel generator and the top piston ring was seized. Carbon build up on the inlet valve and port was between 1.2 x 10-3 and 3.8 x 10-3mm/kWh. An exponential rise in lubricating oil consumption and fuel consumption after 288kWh indicated the start of engine wear out. Neoprene and reinforced polyurethane are not suitable materials for RME fuel…

Advisors/Committee Members: Howard-Hildige, Robin.

Subjects/Keywords: biofuels; diesel engines

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APA (6^th Edition):

Madden, O. (2011). Investigation of first generation biofuels in diesel engines. (Thesis). University of Limerick. Retrieved from http://hdl.handle.net/10344/1967

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Madden, Orla. “Investigation of first generation biofuels in diesel engines.” 2011. Thesis, University of Limerick. Accessed March 04, 2021. http://hdl.handle.net/10344/1967.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Madden, Orla. “Investigation of first generation biofuels in diesel engines.” 2011. Web. 04 Mar 2021.

Vancouver:

Madden O. Investigation of first generation biofuels in diesel engines. [Internet] [Thesis]. University of Limerick; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10344/1967.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Madden O. Investigation of first generation biofuels in diesel engines. [Thesis]. University of Limerick; 2011. Available from: http://hdl.handle.net/10344/1967

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

13. Jiang, Shixun. Optimization of diesel and gasoline blending operations.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:302064

► Diesel, one of the main petroleum products, is widely used in industry and transportation. Only high quality diesel product can survive in the more and… (more)

▼ Diesel, one of the main petroleum products, is widely used in industry and transportation. Only high quality diesel product can survive in the more and more competitive market. The optimization methodology for diesel production and management is critical to refineries’ profitability. LP/MIP models have been applied in diesel blending planning and scheduling in the last decades. With the benefits of reducing the model scale and computing efforts, LP/MIP models lead to operation results with inaccurate property estimation and profit loss due to the accuracy loss in the linearisation of blending models. To improve model accuracy, more accurate property prediction models for diesel blending should be incorporated into the refinery planning and schedule methods to improve decision making procedure in the case of scheduling for diesel blending, where academic effort is almost absent. A model for planning of refinery diesel streams is developed to optimise the diesel production of a refinery. Nonlinear blending models are applied to calculate blending properties more precisely than conventional linear models. Due to the large number of equations and variables, it may be generated to an infeasible solution if the given initial points are not good enough. To avoid this situation, a solution algorithm is proposed. Based on the NLP planning model, a model for scheduling diesel blending is developed. In order to improve the model accuracy, nonlinear blending correlations are used, which lead to a complicated MINLP problem that cannot be solved by existing MINLP solver directly. A robust solution algorithm is proposed in this thesis to help optimizing the MINLP problem. A case study of diesel production blending scheduling is introduced to illustrate how to model a diesel blending scheduling problem and the efficient and reliability of the solution algorithm. Besides, the proposed MINLP model and the solution algorithm can be extensively applied to other processes in a refinery, such as gasoline blending. Once gasoline blending models are taken into account, the model can be modified to optimize the gasoline blending scheduling problem. Advisors/Committee Members: JOBSON, MEGAN MR, Jobson, Megan, Zhang, Nan.

Subjects/Keywords: diesel blending; scheduling

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APA (6^th Edition):

Jiang, S. (2016). Optimization of diesel and gasoline blending operations. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:302064

Chicago Manual of Style (16^th Edition):

Jiang, Shixun. “Optimization of diesel and gasoline blending operations.” 2016. Doctoral Dissertation, University of Manchester. Accessed March 04, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:302064.

MLA Handbook (7^th Edition):

Jiang, Shixun. “Optimization of diesel and gasoline blending operations.” 2016. Web. 04 Mar 2021.

Vancouver:

Jiang S. Optimization of diesel and gasoline blending operations. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Mar 04]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:302064.

Council of Science Editors:

Jiang S. Optimization of diesel and gasoline blending operations. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:302064

University of Texas – Austin

14. -8656-4098. Increasing exhaust temperature of an idling light-duty diesel engine through post-injection and intake throttling.

Degree: MSin Engineering, Mechanical Engineering, 2018, University of Texas – Austin

URL: http://hdl.handle.net/2152/64126

► Modern Diesel engines rely heavily on aftertreatment systems for reducing tail pipe emissions. However, for operating conditions such as cold start, extended low load operations… (more)

Subjects/Keywords: Diesel; Exhaust temperature

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APA (6^th Edition):

-8656-4098. (2018). Increasing exhaust temperature of an idling light-duty diesel engine through post-injection and intake throttling. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/64126

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-8656-4098. “Increasing exhaust temperature of an idling light-duty diesel engine through post-injection and intake throttling.” 2018. Masters Thesis, University of Texas – Austin. Accessed March 04, 2021. http://hdl.handle.net/2152/64126.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-8656-4098. “Increasing exhaust temperature of an idling light-duty diesel engine through post-injection and intake throttling.” 2018. Web. 04 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-8656-4098. Increasing exhaust temperature of an idling light-duty diesel engine through post-injection and intake throttling. [Internet] [Masters thesis]. University of Texas – Austin; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2152/64126.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-8656-4098. Increasing exhaust temperature of an idling light-duty diesel engine through post-injection and intake throttling. [Masters Thesis]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/64126

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Texas A&M University

15. Breen, Jonathan Robert. Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine.

Degree: MS, Mechanical Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250

► Low temperature combustion (LTC) is an appealing new method of combustion that promises low nitric oxides and soot emissions while maintaining or improving on engine… (more)

▼ Low temperature combustion (LTC) is an appealing new method of combustion that promises low nitric oxides and soot emissions while maintaining or improving on engine performance. The three main points of this study were to develop and validate an engine model in GT-Power capable of implementing LTC, to study parametrically exhaust gas recirculation (EGR) and injection timing effects on performance and emissions, and to investigate methods to decrease pressure rise rates during LTC operation. The model was validated at nine different operating points, 3 speeds and 3 loads, while the parametric studies were conducted on 6 of the 9 operating points, 3 speeds and 2 loads. The model consists of sections that include: cylinders, ports, intake and exhaust manifolds, EGR system, and turbocharger. For this model, GT-Power calculates the combustion using a multi-zone, quasi-dimensional model and a knock-induced combustion model. The main difference between them is that the multi-zone model is directly injected while the knock model is port injected. A variety of sub models calculate the fluid flow and heat transfer. A parametric study varying the EGR and the injection timing to determine the optimal combination was conducted using the multi-zone model while a parametric study that just varies EGR is carried out using the knock model. The first parametric study showed that the optimal EGR and injection timing combination for the low loads occurred at high levels of EGR (60 percent) and advanced injection timings (30 to 40 crank angle degrees before top dead center). The optimal EGR and injection timing combination for the high loads occurred at low levels of EGR (30 percent to 40 percent) and retarded injection timings (7.5 to 5 crank angle degrees before top dead center). The knock model determined that the ideal EGR ratio for homogeneous charge compression ignition (HCCI) operation varied from 30 percent to 45 percent, depending on the operating condition. Three methods were investigated as possible ways to reduce pressure rise rates during LTC operation. The only feasible method was the multiple injection strategy which provided dramatically reduced pressure rise rates across all EGR levels and injection timings. Advisors/Committee Members: Caton, Jerald A. (advisor), Jacobs, Timothy J. (committee member), Capareda, Sergio (committee member).

Subjects/Keywords: Low Temperature Combustion; Diesel Combustion; Diesel Engines; HCCI; Diesel Emissions

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APA (6^th Edition):

Breen, J. R. (2011). Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250

Chicago Manual of Style (16^th Edition):

Breen, Jonathan Robert. “Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine.” 2011. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250.

MLA Handbook (7^th Edition):

Breen, Jonathan Robert. “Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine.” 2011. Web. 04 Mar 2021.

Vancouver:

Breen JR. Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250.

Council of Science Editors:

Breen JR. Development of Low Temperature Combustion Modes to Reduce Overall Emissions from a Medium-Duty, Four Cylinder Diesel Engine. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8250

University of Pretoria

16. [No author]. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur .

Degree: 2009, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/

► An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their… (more)

▼ An alarming number of compression ignition (CI) engines in the transport, mining and heavy engineering environments have been failing due to combustion irregularities within their combustion chambers. It has been found that diesel fuels containing contaminants or diesel fuels with poor lubricity characteristics lead to stickiness of diesel injector needles, which badly affects injector spray patterns resulting in the phenomenon of “cold combustion”. This study has been undertaken to develop a technique for detecting and preventing the damage resulting from this deviation in the combustion of a diesel engine. The technique has been formulated with a view to being as non intrusive as possible, so as not to require major modification of an existing test engine to accommodate the technique. The practice of monitoring individual cylinder exhaust gas temperatures (EGTs) proved to be an effective way of determining whether potentially destructive combustion abnormalities were taking place within the diesel engine. By recording these temperatures at certain stages during the engine’s operation, taking their average, and comparing each one to this average it is also possible to isolate the location of the combustion abnormality. This method proved to be most effective at full loads and maximum fuel delivery where combustion temperatures are highest and the effects of poor combustion are most noticeable and potentially damaging. The second goal was to develop a small, portable electronic device that makes use of the monitoring technique developed and provides a visual and audible alarm to notify a vehicle operator or technician of a combustion fault within a diesel engine. A Combustion Monitoring System (CMS) prototype was developed and tested on a small naturally aspirated engine at the University of Pretoria’s engine testing facilities. The prototype met its primary goal of detecting simulated combustion abnormalities under a variety of test conditions. It is envisaged that the monitoring techniques applied in developing the CMS unit may eventually be incorporated into the powerful processing abilities of the modern diesel Engine Control Unit (ECU). In its current form the CMS prototype is a useful tool in sensing combustion related malfunctions within a diesel engine and preventing damage from occurring. Advisors/Committee Members: Prof N D L Burger (advisor), Prof A von Wielligh (advisor).

Subjects/Keywords: Improper combustion; Diesel engines; UCTD

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APA (6^th Edition):

author], [. (2009). Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-11262009-210133/

Chicago Manual of Style (16^th Edition):

author], [No. “Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur .” 2009. Masters Thesis, University of Pretoria. Accessed March 04, 2021. http://upetd.up.ac.za/thesis/available/etd-11262009-210133/.

MLA Handbook (7^th Edition):

author], [No. “Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur .” 2009. Web. 04 Mar 2021.

Vancouver:

author] [. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur . [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2021 Mar 04]. Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/.

Council of Science Editors:

author] [. Investigation into a system that can detect improper combustion in a diesel engine before significant damage can occur . [Masters Thesis]. University of Pretoria; 2009. Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-210133/

Universidade do Rio Grande do Sul

17. Ruschel, Carla Felippi Chiella. Avaliação de blendas de óleo diesel e biodiesel através do teste da qualidade de ignição(IQT).

Degree: 2013, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/70464

►

A metodologia Transesterification Double Step Process (TDSP) permitiu a produção de diferentes variedades de biodiesel. Estes produtos foram feitos a partir de óleo de soja,… (more)

▼

A metodologia Transesterification Double Step Process (TDSP) permitiu a produção de diferentes variedades de biodiesel. Estes produtos foram feitos a partir de óleo de soja, óleo residual de fritura e gordura vegetal hidrogenada por duas rotas alcoólicas: a metílica e a etílica. Os produtos foram caracterizados por espectroscopia de Ressonância Magnética Nuclear de Hidrogênio (1H RMN) permitindo o cálculo da conversão dos materiais de partida em biodiesel. Em seguida, foram formadas as blendas a partir de óleo diesel S500 e de cada tipo de biodiesel, em diversas proporções. As blendas foram caracterizadas através de espectroscopia no infravermelho com transformada de Fourier (FTIR) e estudadas através da técnica do teste de qualidade de ignição ou Ignition Quality Tester (IQT), objetivo principal deste trabalho, a qual permite obter o número de cetano derivado dessas misturas combustíveis. Além disso, também foram estudadas outras cinco propriedades relacionadas a essas blendas, a saber: ponto de fulgor, teor de enxofre, massa especifica, curva de destilação e índice de iodo. Por fim, foi realizada uma abordagem do ponto de vista quimiométrico, que auxiliou na interpretação dos resultados do grande conjunto de dados resultantes desse estudo.

The transesterification Double Step Process (TDSP) methodology allowed the production of different varieties of biodiesel. The different kinds of biodiesel were produced from soybean, waste cooking and hydrogenated vegetable oils by two alcoholic routes: methylic and ethylic. These products were characterized by Hydrogen Nuclear Magnetic Resonance spectroscopy (1H NMR) allowing the calculation of the conversion of starting materials into biodiesel. Then, the blends were formed from diesel S500 and each type of biodiesel, in various proportions. The blends were characterized by Fourier transform infrared spectroscopy (FTIR) and studied using the technique Ignition Quality Tester (IQT), the main objective of this work, which gives the derived cetane number of such mixtures fuels. In addition, we studied five other properties related to the blends, namely: flash point, sulfur content, specific gravity, distillation curves and iodine number. Finally, there was an approach from the viewpoint chemometric, who assisted the results interpretation of the large data set resultant from this study.

Advisors/Committee Members: Samios, Dimitrios.

Subjects/Keywords: Transesterificação; Biodiesel; Óleo diesel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ruschel, C. F. C. (2013). Avaliação de blendas de óleo diesel e biodiesel através do teste da qualidade de ignição(IQT). (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/70464

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ruschel, Carla Felippi Chiella. “Avaliação de blendas de óleo diesel e biodiesel através do teste da qualidade de ignição(IQT).” 2013. Thesis, Universidade do Rio Grande do Sul. Accessed March 04, 2021. http://hdl.handle.net/10183/70464.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ruschel, Carla Felippi Chiella. “Avaliação de blendas de óleo diesel e biodiesel através do teste da qualidade de ignição(IQT).” 2013. Web. 04 Mar 2021.

Vancouver:

Ruschel CFC. Avaliação de blendas de óleo diesel e biodiesel através do teste da qualidade de ignição(IQT). [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10183/70464.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ruschel CFC. Avaliação de blendas de óleo diesel e biodiesel através do teste da qualidade de ignição(IQT). [Thesis]. Universidade do Rio Grande do Sul; 2013. Available from: http://hdl.handle.net/10183/70464

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Porto

18. Ramos, Diogo Mesquita. Influência do biodiesel na injecção de um motor Diesel.

Degree: 2009, Universidade do Porto

URL: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59263

Tese de mestrado integrado. Engenharia Mecânica. Faculdade de Engenharia. Universidade do Porto. 2009 Advisors/Committee Members: Duarte, José Manuel Ferreira, Universidade do Porto. Faculdade de Engenharia.

Subjects/Keywords: Biodiesel; Motores diesel; Biocombustíveis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ramos, D. M. (2009). Influência do biodiesel na injecção de um motor Diesel. (Thesis). Universidade do Porto. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59263

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ramos, Diogo Mesquita. “Influência do biodiesel na injecção de um motor Diesel.” 2009. Thesis, Universidade do Porto. Accessed March 04, 2021. http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59263.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ramos, Diogo Mesquita. “Influência do biodiesel na injecção de um motor Diesel.” 2009. Web. 04 Mar 2021.

Vancouver:

Ramos DM. Influência do biodiesel na injecção de um motor Diesel. [Internet] [Thesis]. Universidade do Porto; 2009. [cited 2021 Mar 04]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59263.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ramos DM. Influência do biodiesel na injecção de um motor Diesel. [Thesis]. Universidade do Porto; 2009. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/59263

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

19. Lira, Diana Duarte de. Caracterização de Aspergillus sp. Quanto a capacidade de degradação de óleo diesel .

Degree: 2014, Universidade Federal de Pernambuco

URL: http://repositorio.ufpe.br/handle/123456789/11900

► A taxonomia clássica de fungos filamentos é baseada em observações de características fenotípicas, além de incorporar as aplicações biotecnológicas das substâncias produzidas à otimização de… (more)

▼ A taxonomia clássica de fungos filamentos é baseada em observações de características fenotípicas, além de incorporar as aplicações biotecnológicas das substâncias produzidas à otimização de processos. Os fungos por participarem da ciclagem de material orgânico são hábeis em descontaminar ambientes. Este trabalho teve por objetivo a identificação de 23 espécies de Aspergillus isolados de água do mar e estuário com a capacidade de utilizar óleo diesel como fonte de carbono. Para taxonomia clássica foram utilizados meios diferenciais. Após a identificação foi realizado o teste com o indicador 2,6 diclofenolindolfenol, e foram selecionados os que apresentaram mudança da coloração do indicador com 24horas após inicio do ensaio. As linhagens selecionadas foram submetidas aos ensaios de aclimatação, otimização das condições nutricionais do meio de cultivo e toxicidade dos subprodutos provenientes do biotratamento utilizando o índice de germinação o qual analisa a geminação e crescimento médio de sementes vegetais. Para otimização de ensaio de degradação foi utilizado o planejamento experimental Delineamento Composto Central com três variáveis independentes: nitrogênio, fósforo e magnésio. Foram identificadas as espécies Aspergillus flavus(06), Aspergillus aculeatus(08), Aspergillus terreus(01), Aspergillus awamori(02), Aspergillus tamarii(01), Aspergillus japonicus(03), Aspergillus niger(02). Oito linhagens apresentaram viragem da coloração azul para incolor em 24 horas, mas o Aspergillus flavus (AFL59) foi selecionado para todos os testes por apresentar 80% de degradação. A linhagem submetida ao ensaio de otimização apresentou o Índice de Germinação com valores próximos a 100% crescimento da raiz e eficiência de degradação (E.D%) do óleo diesel próximo a 100% para o hidrocarboneto nonano, ausência de picos entre decano e hexadecano, e a partir de heptadecano até heneicosano as porcentagens variaram entre 20,85% e 37,11%. Concluímos que o tratamento de óleo diesel utilizando as linhagens de Aspergillus mostrou-se eficiente para degradação de cadeias de hidrocarbonetos maiores apresentando baixa toxicidade para o nível trófico utilizado para o ensaio. Advisors/Committee Members: Gusmão, Norma Buarque de (advisor), Motta, Cristina M. de Souza (advisor).

Subjects/Keywords: Biorremediação; Taxonomia; Aspergillus; Óleo diesel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lira, D. D. d. (2014). Caracterização de Aspergillus sp. Quanto a capacidade de degradação de óleo diesel . (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/11900

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lira, Diana Duarte de. “Caracterização de Aspergillus sp. Quanto a capacidade de degradação de óleo diesel .” 2014. Thesis, Universidade Federal de Pernambuco. Accessed March 04, 2021. http://repositorio.ufpe.br/handle/123456789/11900.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lira, Diana Duarte de. “Caracterização de Aspergillus sp. Quanto a capacidade de degradação de óleo diesel .” 2014. Web. 04 Mar 2021.

Vancouver:

Lira DDd. Caracterização de Aspergillus sp. Quanto a capacidade de degradação de óleo diesel . [Internet] [Thesis]. Universidade Federal de Pernambuco; 2014. [cited 2021 Mar 04]. Available from: http://repositorio.ufpe.br/handle/123456789/11900.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lira DDd. Caracterização de Aspergillus sp. Quanto a capacidade de degradação de óleo diesel . [Thesis]. Universidade Federal de Pernambuco; 2014. Available from: http://repositorio.ufpe.br/handle/123456789/11900

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Missio Bayer, Débora. Biorremediação de sedimento estuarino contaminado por óleo diesel com o uso de biossurfatante .

Degree: 2010, Universidade Federal de Pernambuco

URL: http://repositorio.ufpe.br/handle/123456789/5271

► Acidentes com derrames de petróleo ou seus derivados em ambientes sensíveis, como os estuários, provocam um grande impacto ambiental. A limpeza dessas áreas contaminadas necessita… (more)

▼ Acidentes com derrames de petróleo ou seus derivados em ambientes sensíveis, como os estuários, provocam um grande impacto ambiental. A limpeza dessas áreas contaminadas necessita de cuidados e de tecnologias que reduzam os efeitos do contaminante no meio ambiente. Nesse sentido, tecnologias biológicas de degradação dos hidrocarbonetos, em processos chamados de biorremediação, são apontadas como eficazes no tratamento de áreas degradadas. Muitos trabalhos têm sido desenvolvidos no intuito de elucidar os processos degradativos dos hidrocarbonetos, aeróbios e anaeróbios, e as tecnologias de biorremediação. O presente trabalho avaliou dois tratamentos de biorremediação, atenuação natural e atenuação natural incentivada, em condições laboratoriais, de um sedimento estuarino contaminado com óleo diesel. Como forma de incentivo buscou-se uma maior biodisponibilidade do contaminante, com o uso de um biossurfatante. Foram monitorados parâmetros físico-químicos e biológicos durante 111 dias de tratamento. A avaliação da degradação foi realizada através do acompanhamento dos 16 hidrocarbonetos poliaromáticos (HPAs) considerados prioritário pela U.S. Environmental Protection Agency (U.S.EPA, 2009). A quantificação das bactérias heterotróficas totais indicou um possível período de adaptação da microbiota à contaminação. Dentre os 16 HPAs quantificados, o naftaleno apresentou uma maior percolação na coluna, uma vez que a contaminação foi realizada no topo da mesma. Isso pode ser atribuído a sua maior solubilidade em água, 31 mg/L. Os HPAs de menor peso molecular apresentaram uma maior oscilação de concentração nos primeiros 45 dias de tratamento, enquanto que os de maior peso molecular apresentaram comportamentos semelhantes, com processos de disponibilização mais tardia e significativas reduções do T62 para o T111. Foi possível observar indícios de remoção de 82% do composto pireno no tratamento de atenuação natural nos 111 dias estudados. No tratamento de atenuação natural incentivada observou-se uma redução gradual até o T62, porém no T111 ocorre uma nova disponibilização do contaminante, no entanto do T0 até o T111 ocorre uma remoção de 36% do pireno. De uma maneira geral, o somatório dos 16 HPAs, para ambos os tratamentos nas amostras de superfície, teve redução em sua concentração após o T62, período esse com um significativo crescimento no número de bactérias heterotróficas. Bons indícios de degradação anaeróbia foram observados nos tratamentos adotados, porém não foram verificadas diferenças entre os tratamentos, ou seja, o biossurfatante não solubilizou os HPAs a níveis significativos à biodegradação, como o esperado Advisors/Committee Members: Takayuki Kato, Mario (advisor).

Subjects/Keywords: Biorremediação; HPAs, Sedimento; Óleo diesel

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Missio Bayer, D. (2010). Biorremediação de sedimento estuarino contaminado por óleo diesel com o uso de biossurfatante . (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/5271

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Missio Bayer, Débora. “Biorremediação de sedimento estuarino contaminado por óleo diesel com o uso de biossurfatante .” 2010. Thesis, Universidade Federal de Pernambuco. Accessed March 04, 2021. http://repositorio.ufpe.br/handle/123456789/5271.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Missio Bayer, Débora. “Biorremediação de sedimento estuarino contaminado por óleo diesel com o uso de biossurfatante .” 2010. Web. 04 Mar 2021.

Vancouver:

Missio Bayer D. Biorremediação de sedimento estuarino contaminado por óleo diesel com o uso de biossurfatante . [Internet] [Thesis]. Universidade Federal de Pernambuco; 2010. [cited 2021 Mar 04]. Available from: http://repositorio.ufpe.br/handle/123456789/5271.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Missio Bayer D. Biorremediação de sedimento estuarino contaminado por óleo diesel com o uso de biossurfatante . [Thesis]. Universidade Federal de Pernambuco; 2010. Available from: http://repositorio.ufpe.br/handle/123456789/5271

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Mississippi State University

21. Hodges, Kyle Anthony. Strategies for reduced unburned hydrocarbon and carbon monoxide emissions in diesel-propane dual fuel low temperature combustion.

Degree: PhD, Mechanical Engineering, 2016, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07212016-092528/ ;

► The present manuscript discusses the use of two diesel injections in diesel-ignited propane dual fuel Low Temperature Combustion (LTC). Using propane fumigation into the… (more)

Subjects/Keywords: Dual-Fuel;

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APA (6^th Edition):

Hodges, K. A. (2016). Strategies for reduced unburned hydrocarbon and carbon monoxide emissions in diesel-propane dual fuel low temperature combustion. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07212016-092528/ ;

Chicago Manual of Style (16^th Edition):

Hodges, Kyle Anthony. “Strategies for reduced unburned hydrocarbon and carbon monoxide emissions in diesel-propane dual fuel low temperature combustion.” 2016. Doctoral Dissertation, Mississippi State University. Accessed March 04, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07212016-092528/ ;.

MLA Handbook (7^th Edition):

Hodges, Kyle Anthony. “Strategies for reduced unburned hydrocarbon and carbon monoxide emissions in diesel-propane dual fuel low temperature combustion.” 2016. Web. 04 Mar 2021.

Vancouver:

Hodges KA. Strategies for reduced unburned hydrocarbon and carbon monoxide emissions in diesel-propane dual fuel low temperature combustion. [Internet] [Doctoral dissertation]. Mississippi State University; 2016. [cited 2021 Mar 04]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07212016-092528/ ;.

Council of Science Editors:

Hodges KA. Strategies for reduced unburned hydrocarbon and carbon monoxide emissions in diesel-propane dual fuel low temperature combustion. [Doctoral Dissertation]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07212016-092528/ ;

22. Belizário, Adenilson Cristiano. Avaliação da confiabilidade do motor diesel com a adição de sistemas de injeção de gás na câmara de combustão.

Degree: Mestrado, Engenharia Mecânica de Projeto de Fabricação, 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/3/3151/tde-24092012-171716/ ;

►

Visando a redução de poluentes emitidos pelos motores de combustão interna com ignição por compressão, que operam conforme o ciclo diesel, foram desenvolvidos nos últimos… (more)

▼

Visando a redução de poluentes emitidos pelos motores de combustão interna com ignição por compressão, que operam conforme o ciclo diesel, foram desenvolvidos nos últimos anos dispositivos para a operação destes motores com novos combustíveis, que além da redução de poluentes barateariam o custo de operação, devido à oportunidade de utilização de alguns combustíveis com boa disponibilidade. No presente estudo analisa-se a operação do motor diesel utilizando gás natural como combustível. Neste caso utiliza-se o óleo diesel apenas como combustível piloto, que será responsável pela ignição do segundo combustível, o gás natural. Em diversas publicações constata-se o ganho ambiental e econômico desta aplicação, porém nada é comentado em relação à alteração de índices de confiabilidade e surgimento de novos modos de falha. Neste trabalho verifica-se através de ferramentas de análise de confiabilidade, tais como a análise do tipo FMEA e Árvore de falhas, quais os principais modos de falha que serão inseridos no motor de combustão interna do tipo diesel quando este passa a operar como bi-combustível, com gás natural. Para tanto, necessita-se subdividir o motor diesel em subsistemas mostrando sua estruturação em árvores funcionais e integrando o kit diesel gás neste sistema. A partir da análise de confiabilidade verifica-se a probabilidade de ocorrência de novos modos de falha, que necessitarão da elaboração de novos planos de manutenção ou mesmo alterações no projeto do subsistema de injeção de gás natural.

In order to reduce pollutants emissions from internal combustion engines with compression bend ignition, designed to operate as the Diesel cycle, it has been developed in recent years devices for the addition of new fuels, which in addition to reducing pollutants could lower the cost of operation, due to the possibility of use of some fuels with good availability. In this case it is used only the diesel oil as the pilot flame, which is responsible for the ignition of the second fuel, the natural gas. Many publications discuss the environmental and the economic gain with the use of natural gas as fuel application, however nothing is said about the change of reliability indexes and the appearance of new failure modes in the engine. In this study through system reliability analysis tools such as Faillure Mode Effects and Analisys and Fault tree analysis it is analysed, which are the main failure modes that are inserted into the internal combustion engine when it comes to operate as dual fuel. For that analyses it is necessary to split the engine into subsystems showing its functional trees and integrating diesel gas kit in this system. New failure modes appear with greater severity than the existing in the traditional diesel engine system, leading to new design and maintenance practices. The end user, according to his need, will have one more parameter to choose whether to adopt a Diesel Gas system.

Advisors/Committee Members: Souza, Gilberto Francisco Martha de.

Subjects/Keywords: Confiabilidade; Diesel engine; Diesel-gas kit; Dual fuel; Dual fuel; Kit diesel-gás; Motor diesel; Reliability

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APA (6^th Edition):

Belizário, A. C. (2012). Avaliação da confiabilidade do motor diesel com a adição de sistemas de injeção de gás na câmara de combustão. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/3/3151/tde-24092012-171716/ ;

Chicago Manual of Style (16^th Edition):

Belizário, Adenilson Cristiano. “Avaliação da confiabilidade do motor diesel com a adição de sistemas de injeção de gás na câmara de combustão.” 2012. Masters Thesis, University of São Paulo. Accessed March 04, 2021. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-24092012-171716/ ;.

MLA Handbook (7^th Edition):

Belizário, Adenilson Cristiano. “Avaliação da confiabilidade do motor diesel com a adição de sistemas de injeção de gás na câmara de combustão.” 2012. Web. 04 Mar 2021.

Vancouver:

Belizário AC. Avaliação da confiabilidade do motor diesel com a adição de sistemas de injeção de gás na câmara de combustão. [Internet] [Masters thesis]. University of São Paulo; 2012. [cited 2021 Mar 04]. Available from: http://www.teses.usp.br/teses/disponiveis/3/3151/tde-24092012-171716/ ;.

Council of Science Editors:

Belizário AC. Avaliação da confiabilidade do motor diesel com a adição de sistemas de injeção de gás na câmara de combustão. [Masters Thesis]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/3/3151/tde-24092012-171716/ ;

University of Alberta

23. Sola Quiroz, Carolina. Kinetic Model for a Platinum Diesel Oxidation Catalyst.

Degree: MS, Department of Chemical and Materials Engineering, 2011, University of Alberta

URL: https://era.library.ualberta.ca/files/q524jp28d

► Using data from artificial gas mixtures, global kinetic models for a platinum diesel oxidation catalyst are developed. The modelling of CO and C3H6 was inspired… (more)

Subjects/Keywords: Platinum; Modelling; Diesel; Voltz; Catalyst

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sola Quiroz, C. (2011). Kinetic Model for a Platinum Diesel Oxidation Catalyst. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/q524jp28d

Chicago Manual of Style (16^th Edition):

Sola Quiroz, Carolina. “Kinetic Model for a Platinum Diesel Oxidation Catalyst.” 2011. Masters Thesis, University of Alberta. Accessed March 04, 2021. https://era.library.ualberta.ca/files/q524jp28d.

MLA Handbook (7^th Edition):

Sola Quiroz, Carolina. “Kinetic Model for a Platinum Diesel Oxidation Catalyst.” 2011. Web. 04 Mar 2021.

Vancouver:

Sola Quiroz C. Kinetic Model for a Platinum Diesel Oxidation Catalyst. [Internet] [Masters thesis]. University of Alberta; 2011. [cited 2021 Mar 04]. Available from: https://era.library.ualberta.ca/files/q524jp28d.

Council of Science Editors:

Sola Quiroz C. Kinetic Model for a Platinum Diesel Oxidation Catalyst. [Masters Thesis]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/q524jp28d

Universidade do Rio Grande do Sul

24. Menezes, Eliana Weber de. Produção de trabalho, geração de contaminantes e tratamento pós-combustão em motores ciclo diesel.

Degree: 2009, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/17484

►

Este trabalho tem como objetivo a avaliação do desempenho de combustíveis para motores ciclo Diesel, emissões de contaminantes e tratamento catalítico pós-combustão, em condições reais… (more)

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Este trabalho tem como objetivo a avaliação do desempenho de combustíveis para motores ciclo Diesel, emissões de contaminantes e tratamento catalítico pós-combustão, em condições reais de operação. Para obtenção de resultados relativos ao consumo específico de combustível e geração de contaminantes atmosféricos, utilizaram-se motores Diesel, monocilindro, de pequeno porte, acoplados a geradores elétricos. A partir dos resultados obtidos neste trabalho, constatou-se que é possível a obtenção de parâmetros relativos ao desempenho, emissões de contaminantes e tratamento catalítico pós-combustão utilizando motores/geradores e um procedimento específico de amostragem. Os resultados indicaram que o consumo específico do óleo diesel, biodiesel e formulações apresenta uma correlação direta com a entalpia de combustão. A quantificação dos contaminantes é altamente dependente do procedimento de amostragem utilizado, do tipo de motor e das condições de operação empregadas. A redução das emissões de material particulado (MP) com a utilização de biodiesel é controversa. Com motor de alta taxa de compresssão e maior pressão de injeção não se observa uma redução significativa nas emissões de MP, quando o motor é alimentado com biodiesel. A adição de biodiesel etílico de soja, em formulação com óleo diesel, aumenta a concentração de NO. Comparado com o óleo diesel, o biodiesel aumenta em 16% as emissões de NO. Este aumento não está associado às características de volatilidade e viscosidade do biodiesel, mas sim, à sua compressibilidade. A utilização de catalisador com platina possibilita a oxidação das frações voláteis e condensáveis da exaustão do motor. O catalisador de platina não apresenta atividade de oxidação da fração seca que compõe o MP. O NO2 é reduzido para NO através da oxidação dos hidrocarbonetos voláteis e condensáveis e não se observa redução dos NOx para N2.

An evaluation was made of the performance of fuels for Diesel cycle engines, their contaminant emissions and catalytic post-combustion treatment under real operating conditions. The findings concerning specific fuel consumption and production of air pollutants were obtained using small single cylinder Diesel engines coupled to electric generators. The results of this study indicated that it is possible to obtain parameters relating to performance, contaminant emissions and catalytic post-combustion treatment using engines and generators and a specific sampling procedure. The results also indicated that the specific consumption of diesel oil, biodiesel and formulations is directly correlated with the enthalpy of combustion. The quantification of the contaminants is highly dependent on the sampling procedure employed, on the type of engine and on the operating conditions employed. The reduction of particulate matter (PM) emissions with the use of biodiesel is a controversial point. With a high compression engine and greater injection pressure, no significant reduction in the emission of PM has been observed using biodiesel. The addition of soy biodiesel in…

Advisors/Committee Members: Cataluña Veses, Renato.

Subjects/Keywords: Combustíveis; Motor diesel; Catalisadores automotivos

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APA (6^th Edition):

Menezes, E. W. d. (2009). Produção de trabalho, geração de contaminantes e tratamento pós-combustão em motores ciclo diesel. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/17484

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Menezes, Eliana Weber de. “Produção de trabalho, geração de contaminantes e tratamento pós-combustão em motores ciclo diesel.” 2009. Thesis, Universidade do Rio Grande do Sul. Accessed March 04, 2021. http://hdl.handle.net/10183/17484.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Menezes, Eliana Weber de. “Produção de trabalho, geração de contaminantes e tratamento pós-combustão em motores ciclo diesel.” 2009. Web. 04 Mar 2021.

Vancouver:

Menezes EWd. Produção de trabalho, geração de contaminantes e tratamento pós-combustão em motores ciclo diesel. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2009. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10183/17484.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Menezes EWd. Produção de trabalho, geração de contaminantes e tratamento pós-combustão em motores ciclo diesel. [Thesis]. Universidade do Rio Grande do Sul; 2009. Available from: http://hdl.handle.net/10183/17484

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

25. Jones, Lester Robert. Analysis and performance of a conventional high speed compression-ignition engine adapted to gas fuel utilization.

Degree: MS, Mechanical Engineering, 1948, Oregon State University

URL: http://hdl.handle.net/1957/53405

Subjects/Keywords: Diesel motor

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APA (6^th Edition):

Jones, L. R. (1948). Analysis and performance of a conventional high speed compression-ignition engine adapted to gas fuel utilization. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/53405

Chicago Manual of Style (16^th Edition):

Jones, Lester Robert. “Analysis and performance of a conventional high speed compression-ignition engine adapted to gas fuel utilization.” 1948. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/53405.

MLA Handbook (7^th Edition):

Jones, Lester Robert. “Analysis and performance of a conventional high speed compression-ignition engine adapted to gas fuel utilization.” 1948. Web. 04 Mar 2021.

Vancouver:

Jones LR. Analysis and performance of a conventional high speed compression-ignition engine adapted to gas fuel utilization. [Internet] [Masters thesis]. Oregon State University; 1948. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/53405.

Council of Science Editors:

Jones LR. Analysis and performance of a conventional high speed compression-ignition engine adapted to gas fuel utilization. [Masters Thesis]. Oregon State University; 1948. Available from: http://hdl.handle.net/1957/53405

26. Azmeera, Aruna Kumari. Combustion and emission characteristics of di diesel engines using bio diesel; -.

Degree: Mechanical, 2013, Jawaharlal Nehru Technological University, Hyderabad

URL: http://shodhganga.inflibnet.ac.in/handle/10603/16389

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Now a days for any country energy resourses in particular petroleum products have become important for its development. The products derived from crude oil continued… (more)

Subjects/Keywords: Characteristics; Combustion; Diesel; Emission; Engines

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APA (6^th Edition):

Azmeera, A. K. (2013). Combustion and emission characteristics of di diesel engines using bio diesel; -. (Thesis). Jawaharlal Nehru Technological University, Hyderabad. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/16389

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Azmeera, Aruna Kumari. “Combustion and emission characteristics of di diesel engines using bio diesel; -.” 2013. Thesis, Jawaharlal Nehru Technological University, Hyderabad. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/16389.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Azmeera, Aruna Kumari. “Combustion and emission characteristics of di diesel engines using bio diesel; -.” 2013. Web. 04 Mar 2021.

Vancouver:

Azmeera AK. Combustion and emission characteristics of di diesel engines using bio diesel; -. [Internet] [Thesis]. Jawaharlal Nehru Technological University, Hyderabad; 2013. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16389.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Azmeera AK. Combustion and emission characteristics of di diesel engines using bio diesel; -. [Thesis]. Jawaharlal Nehru Technological University, Hyderabad; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/16389

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

27. Periyasamy S. Investigation of combustion chamber profile induced thermal performance and vibration in diesel engine;.

Degree: Combustion chamber profile induced thermal performance and vibration in Diesel engine, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/17400

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The function of an engine is to produce mechanical power. When newlinethe fuel is burnt, heat is released. This heat energy is converted into useful… (more)

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The function of an engine is to produce mechanical power. When newlinethe fuel is burnt, heat is released. This heat energy is converted into useful newlinework. The details of the engine design are varying significantly over the size newlineof diesel engine. In particular, different combustion chamber geometries and newlinefuel-injection characteristics are required to deal effectively with a major newlinediesel engine design problem, achieving sufficiently rapid fuel-air mixing newlinerates to complete the fuel-burning process in the time available. A wide newlinevariety of inlet port geometries, cylinder head and piston shapes, and fuelinjection newlinepatterns are used to accomplish this over the size of diesel engine. newlineCombustion chamber profile changes are considered technologically newlineimportant because of their ability to further increase in diesel engine working temperatures and reduce cooling requirements, thus achieving higher engine newlineefficiency, lower emission and increased performance. newlineThe vibration of engine also depends on the combustion newlinephenomena and then the piston profile. The force acting on piston is varying newlinedepends on the piston profile area for the same pressure inside the cylinder. newlineBy this way combustion chamber profile otherwise the piston crown profile is newlinevery important to get a favourable performance in terms of thermal and newlinevibration aspects. The combination of thermal performance, simulation of incylinder newlineflow and vibration data are not available for use. A new design newlineapproach adapted for compromising the thermal performance and vibration behaviour of the engine. Four different piston profiles were selected newlinefor the experimental work as well as the simulation work. All pistons were newlinefitted in engine and the performance parameters along with emission newlineparameter were recorded. The specific fuel consumption, thermal efficiency, newlinemechanical efficiency and NOx were obtained from the experiment. At the newlinesame time the vibration signal was collected and stored in the computer. newline

Appendix p.153-154, References p.155-174.

Advisors/Committee Members: Alwarsamy T.

Subjects/Keywords: Combustion chamber; Diesel engine; Vibration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

S, P. (2014). Investigation of combustion chamber profile induced thermal performance and vibration in diesel engine;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/17400

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

S, Periyasamy. “Investigation of combustion chamber profile induced thermal performance and vibration in diesel engine;.” 2014. Thesis, Anna University. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/17400.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

S, Periyasamy. “Investigation of combustion chamber profile induced thermal performance and vibration in diesel engine;.” 2014. Web. 04 Mar 2021.

Vancouver:

S P. Investigation of combustion chamber profile induced thermal performance and vibration in diesel engine;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17400.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

S P. Investigation of combustion chamber profile induced thermal performance and vibration in diesel engine;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/17400

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Appa Rao K. Experimental investigation for adopting hcci combustion in a diesel engine.

Degree: Mechanical Engineering, 2013, Jawaharlal Nehru Technological University, Anantapuram

URL: http://shodhganga.inflibnet.ac.in/handle/10603/9763

►

At present diesel engines are performing well and meeting existing emission norms. But to meet future emission norms alternative combustion concept may be useful. Homogeneous… (more)

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At present diesel engines are performing well and meeting existing emission norms. But to meet future emission norms alternative combustion concept may be useful. Homogeneous Charge Compression Ignition (HCCI) has proven to be capable of reducing both Oxides of Nitrogen (NOx) and Smoke emissions significantly. In HCCI engine, a homogeneous air fuel mixture is formed in the combustion chamber and the mixture is compression ignited. Due to the fact that the mixture is homogeneous, there is no smoke producing fuel-rich regions. The NOx emissions are also low because HCCI engine runs with lean homogeneous mixture and at low in-cylinder temperature. The objective of present work is for adopting HCCI combustion in a diesel engine by addressing the problems associated with HCCI engine like (i) rapid pressure rise due to instantaneous combustion (ii) difficulty to operate at higher loads due to knocking (iii) increase of HC and CO emissions (iv) decrease in brake thermal efficiency. At high loads, rate of pressure rise is rapid in the combustion chamber. Because of this, it is inevitable to sacrifice to run the engine at high loads with HCCI concept. Also CO and HC emissions for HCCI engine were reported to be increased, which requires a remedy. The another important problem is loss in brake thermal efficiency with HCCI combustion. Hence, there is a need to focus attention to overcome these problems in order to make HCCI engine practicable. Keeping these things in mind, experimental investigation is planned in the present research work to find remedies to the above problems. For this purpose, a computerized single cylinder, four stroke, water cooled, variable compression ratio, diesel engine is selected with specifications shown in Appendix-I. The performance, emission and combustion parameters of base engine diesel are recorded at standard operating conditions such as compression ratio 16.5, injection timing 230 bTDC and injection pressure 200 bar and these readings are taken as base data.

Summary and Conclusion p. 200-207, References p. 208-226, Appendix p. 227-235

Advisors/Committee Members: Raja Gopal K.

Subjects/Keywords: Adopting HCCI; Combustion; Diesel Engine

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APA (6^th Edition):

K, A. R. (2013). Experimental investigation for adopting hcci combustion in a diesel engine. (Thesis). Jawaharlal Nehru Technological University, Anantapuram. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/9763

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

K, Appa Rao. “Experimental investigation for adopting hcci combustion in a diesel engine.” 2013. Thesis, Jawaharlal Nehru Technological University, Anantapuram. Accessed March 04, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/9763.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

K, Appa Rao. “Experimental investigation for adopting hcci combustion in a diesel engine.” 2013. Web. 04 Mar 2021.

Vancouver:

K AR. Experimental investigation for adopting hcci combustion in a diesel engine. [Internet] [Thesis]. Jawaharlal Nehru Technological University, Anantapuram; 2013. [cited 2021 Mar 04]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9763.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

K AR. Experimental investigation for adopting hcci combustion in a diesel engine. [Thesis]. Jawaharlal Nehru Technological University, Anantapuram; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9763

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

29. Intikhab, Saad. An Experimentally Verified Approach to Design Efficient Gasoline and Diesel Fuel Surrogates.

Degree: MS, Chemical Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/156889

► Gasoline or diesel fuel sourced from crude oil source is a complex mixture of hundreds of hydrocarbons. It is extremely difficult to simulate for better… (more)

▼ Gasoline or diesel fuel sourced from crude oil source is a complex mixture of hundreds of hydrocarbons. It is extremely difficult to simulate for better understanding of the fuel flow and combustion behaviors which are essential to enhance fuel quality and to improve engine performance. To overcome this difficulty, a surrogate fuel, that has fewer compounds and that emulates certain important physical properties of a target fuel, can be utilized. The surrogate mixtures for both gasoline and diesel are designed through a computer aided model based technique by our collaborator at Technical University of Denmark (DTU), and their relevant target properties are predicted. Following the preparation of surrogate blends, target physical properties of both fuel surrogates are measured according to American Society of Testing and Materials (ASTM) methods using advanced analytical equipment in the Fuel Characterization Laboratory. For both gasoline and diesel surrogates, the model predictions are found to be in good agreement with the experimental results except for a few reported cases such as the Reid Vapor Pressure (RVP) of gasoline. For such cases, modifications are made to the model in order to improve the predicted results. Therefore, the experimental investigations are found to be extremely essential for improving the assumptions used to define interactions of the hydrocarbons in the mixtures, which in turn enables enhanced predictability of the model. The developed model, which leads to a property driven product, can be further investigated to prepare new fuel blends and identify suitable renewable additives in a known amount that can aid in designing of future generation of fuels obtained from either conventional crude oil sources or non-conventional sources. Even though this model provides an excellent, fast and reliable opportunity for screening large number of fuel surrogates and optimization of the same, it is extremely important to experimentally verify the final blends and fine-tune them if necessary before their utilization in engine. Also, the measured property values help to improve the accuracy of the property models as well as the assumptions used to develop them. Advisors/Committee Members: Elbashir, Nimir (advisor), Abdel-Wahab, Ahmed (advisor), Abu-Rub, Haitham (committee member).

Subjects/Keywords: gasoline; diesel; surrogate; physical properties

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Intikhab, S. (2016). An Experimentally Verified Approach to Design Efficient Gasoline and Diesel Fuel Surrogates. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156889

Chicago Manual of Style (16^th Edition):

Intikhab, Saad. “An Experimentally Verified Approach to Design Efficient Gasoline and Diesel Fuel Surrogates.” 2016. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/156889.

MLA Handbook (7^th Edition):

Intikhab, Saad. “An Experimentally Verified Approach to Design Efficient Gasoline and Diesel Fuel Surrogates.” 2016. Web. 04 Mar 2021.

Vancouver:

Intikhab S. An Experimentally Verified Approach to Design Efficient Gasoline and Diesel Fuel Surrogates. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/156889.

Council of Science Editors:

Intikhab S. An Experimentally Verified Approach to Design Efficient Gasoline and Diesel Fuel Surrogates. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/156889

Texas A&M University

30. Shahin, Mostafa Mohamed Mohamed Ibrahim. GTL Diesel Way Forward to Improve Properties by Separating Light Ends and Formulating the Specifications.

Degree: MS, Chemical Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/156970

► Gas-To-Liquid (GTL) Diesel fuel produced from synthetic crudes obtained from natural gas that is converted by the Fisher Tropsch (FT) technology is a promising key… (more)

▼ Gas-To-Liquid (GTL) Diesel fuel produced from synthetic crudes obtained from natural gas that is converted by the Fisher Tropsch (FT) technology is a promising key player for the mobility industry future along with conventional diesel fuels. The main distinctive properties that distinguish between GTL Diesel and conventional Diesel fuels include density, viscosity, lubricity and Cetane Index. The aim of this study was to identify the effect of the change in GTL Diesel’s composition and boiling range on its market specifications, then to develop predictive models for the GTL Diesel properties based on the fuel’s composition. The study recommends how the industry can use these data for upgrading the fuel quality based on distribution market demand. Intensive testing to analyze many characteristics for GTL Diesel was done at Texas A&M University at Qatar (TAMUQ), and ORYX GTL Company provided the GTL Diesel samples. The study was divided into two sections; the first section consisted of the experimental and modeling work where multiple GTL Diesel cuts were initially prepared. The properties of the prepared cuts were analyzed for five critical GTL Diesel fuel market specifications: Density, Viscosity (kinematic and dynamic), Flash point, Cetane index and Cold properties (Pour and Cloud points). In the second section, these properties were compared with the original market specifications in order to identify whether an improvement in fuel characteristics is obtained. In the third section, the properties of these fuel cuts are used to generate mathematical models for properties-compositions relationships. Finally, we proposed certain modifications to the existing GTL Plants that will improve the separation of specific quality of fuels and value-added chemicals cut. This study also identified the potentials for the light cuts obtained from GTL Diesel fuel to be used for the production of Linear Alkyl Benzene (LAB), which is considered as an expensive value-chemical and a feedstock to detergents manufacturing plants. Advisors/Committee Members: Elbashir, Nimir (advisor), El-Halwagi, Mahmoud (committee member), Hassan, Ibrahim (committee member).

Subjects/Keywords: GTL diesel; specifications; modeling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Shahin, M. M. M. I. (2016). GTL Diesel Way Forward to Improve Properties by Separating Light Ends and Formulating the Specifications. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156970

Chicago Manual of Style (16^th Edition):

Shahin, Mostafa Mohamed Mohamed Ibrahim. “GTL Diesel Way Forward to Improve Properties by Separating Light Ends and Formulating the Specifications.” 2016. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/156970.

MLA Handbook (7^th Edition):

Shahin, Mostafa Mohamed Mohamed Ibrahim. “GTL Diesel Way Forward to Improve Properties by Separating Light Ends and Formulating the Specifications.” 2016. Web. 04 Mar 2021.

Vancouver:

Shahin MMMI. GTL Diesel Way Forward to Improve Properties by Separating Light Ends and Formulating the Specifications. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/156970.

Council of Science Editors:

Shahin MMMI. GTL Diesel Way Forward to Improve Properties by Separating Light Ends and Formulating the Specifications. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/156970

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Open Access Theses and Dissertations