subject:(NEDC)

Brno University of Technology

1. Hudeček, Vít. Měření okamžité spotřeby automobilu: Consumption of automobile.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/20912

► Main aim of this Bachelor thesis is to provide you various ways how to measure consumption of petrol in automobile. There are mentioned both types,… (more)

Subjects/Keywords: okamžitá spotřeba; průměrná spotřeba; styl jízdy; NEDC; immediate consumption; average consumption; style of driving; NEDC

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

APA (6^th Edition):

Hudeček, V. (2019). Měření okamžité spotřeby automobilu: Consumption of automobile. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/20912

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):

Hudeček, Vít. “Měření okamžité spotřeby automobilu: Consumption of automobile.” 2019. Thesis, Brno University of Technology. Accessed February 28, 2021. http://hdl.handle.net/11012/20912.

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

MLA Handbook (7^th Edition):

Hudeček, Vít. “Měření okamžité spotřeby automobilu: Consumption of automobile.” 2019. Web. 28 Feb 2021.

Vancouver:

Hudeček V. Měření okamžité spotřeby automobilu: Consumption of automobile. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/11012/20912.

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

Council of Science Editors:

Hudeček V. Měření okamžité spotřeby automobilu: Consumption of automobile. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/20912

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

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

2. Tsiakmakis, Stefanos. Development of a CO2 emissions quantification tool for road transport – connecting detailed vehicle simulation and macro emission tools.

Degree: 2018, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/43001

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CO2 emissions from road transport have an increasing importance on the discussion about climate change. Today several models exist potentially capable of evaluating the effect… (more)

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CO2 emissions from road transport have an increasing importance on the discussion about climate change. Today several models exist potentially capable of evaluating the effect of technology and policy on the energy performance of a transportation system, though they either lack the accuracy required, or they require a level of detail on their inputs, which is prohibiting for large-scale simulations and/or integration with other models or software, e.g. traffic simulation models, cost calculation components, etc. In this light, the objective of the present thesis is the combination of standard vehicle emission simulation approaches, used in vehicle simulation models, with limited statistical/empirical relationships provided by measurement data, and advanced data analysis and machine learning technics, to provide a robust and reliable, yet flexible and quick, integrated framework for analyzing and evaluating the influence of technology and policy on passenger cars’ fuel consumption and CO2 emissions. The integrated simulation-based framework is used mainly to support and assess the effects of the transition from the, up-to-recently used, NEDC-based type approval process, to the newly-defined WLTP, which has taken effect in September 2017. Moreover, the tool is used to evaluate the effect of the newly introduced amendments in the type-approval legislation concerning hybrids and other low emission vehicle segments, and, lastly, to replicate real driving emissions gathered through a Portable Emissions Measurement Systems (PEMS) tests campaign.

Οι εκπομπές CO2 από την οδική κυκλοφορία έχουν ολοένα μεγαλύτερη σημασία στη συζήτηση για την κλιματική αλλαγή. Διάφορα μοντέλα και πρακτικές εφαρμόζονται σήμερα για την εκτίμηση της επίδρασης τεχνολογικών και πολιτικών επιλογών στην κατανάλωση καυσίμου επιβατικών οχημάτων και στην ενεργειακή αξιολόγηση συστημάτων μεταφοράς, ωστόσο, αυτά, είτε δεν διαθέτουν την απαιτούμενη ακρίβεια στο τελικό αποτέλεσμα, είτε χρειάζονται ένα επίπεδο λεπτομέρειας στις παραμέτρους εισόδου που απαγορεύει τις προσομοιώσεις σε μεγάλη κλίμακα ή/και τον συνδυασμό με άλλα μοντέλα ή λογισμικά, όπως μοντέλα προσομοίωσης κυκλοφορίας, μοντέλα υπολογισμού κόστους κ.α.. Υπό αυτό το πρίσμα, η παρούσα διδακτορική διατριβή στοχεύει στο συνδυασμό προσεγγίσεων προσομοίωσης κατανάλωσης καυσίμου οχημάτων, όπως αυτά χρησιμοποιούνται σε αναλυτικά μοντέλα προσομοίωσης, με εμπειρικές σχέσεις που προκύπτουν από τον συνδυασμό και την ανάλυση δεδομένων μετρήσεων και άλλων διαθέσιμων δεδομένων, σε ένα ολοκληρωμένο, ευέλικτο και ακριβές εργαλείο, το οποίο επιτρέπει την αξιολόγηση της επίπτωσης σύγχρονων τεχνολογιών και πολιτικών επιλογών στην κατανάλωση καυσίμου επιβατικών οχημάτων. Το συγκεκριμένο εργαλείο χρησιμοποιείται κυρίως για την υποστήριξη και την εκτίμηση της επίπτωσης της μετάβασης από το μέχρι πρότινος ισχύον πρωτόκολλο μέτρησης το οποίο εφαρμόζεται στην έγκριση τύπου κατανάλωσης καυσίμου και εκπομπών CO2 επιβατικών οχημάτων στην Ευρώπη, το NEDC, στο νέο, το οποίο αναπτύχθηκε από τα Ηνωμένα Έθνη και ξεκίνησε να…

Subjects/Keywords: Εκπομπές CO2; Κατανάλωση καυσίμου; Προσομοίωση Οχήματος; WLTP; NEDC; Οδική Κυκλοφορία; CO2 emissions; Fuel consumption; Vehicle Simulation; WLTP; NEDC; Road transport

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

APA (6^th Edition):

Tsiakmakis, S. (2018). Development of a CO2 emissions quantification tool for road transport – connecting detailed vehicle simulation and macro emission tools. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/43001

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):

Tsiakmakis, Stefanos. “Development of a CO2 emissions quantification tool for road transport – connecting detailed vehicle simulation and macro emission tools.” 2018. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed February 28, 2021. http://hdl.handle.net/10442/hedi/43001.

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

MLA Handbook (7^th Edition):

Tsiakmakis, Stefanos. “Development of a CO2 emissions quantification tool for road transport – connecting detailed vehicle simulation and macro emission tools.” 2018. Web. 28 Feb 2021.

Vancouver:

Tsiakmakis S. Development of a CO2 emissions quantification tool for road transport – connecting detailed vehicle simulation and macro emission tools. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2018. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10442/hedi/43001.

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

Council of Science Editors:

Tsiakmakis S. Development of a CO2 emissions quantification tool for road transport – connecting detailed vehicle simulation and macro emission tools. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2018. Available from: http://hdl.handle.net/10442/hedi/43001

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

3. Cvikl, Aleš. Vpliv kontrolne enote in modela zgorevanja na tranzietno delovanje motorja.

Degree: 2016, Univerza v Mariboru

URL: https://dk.um.si/IzpisGradiva.php?id=57612 ; https://dk.um.si/Dokument.php?id=87734&dn= ; https://plus.si.cobiss.net/opac7/bib/19549462?lang=sl

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Ena izmed glavnih težav osebnega dizelskega vozila so emisije in prav na tem področju se v bližnji prihodnosti obetajo morebitne spremembe. Zaradi visokih stroškov razvoja… (more)

Subjects/Keywords: EGR; emisije; SCR; UREA; NEDC; NOx; EGR; emissions; SCR; URE; NEDC; NOx; info:eu-repo/classification/udc/621.436.068.7(043.2)

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

APA (6^th Edition):

Cvikl, A. (2016). Vpliv kontrolne enote in modela zgorevanja na tranzietno delovanje motorja. (Masters Thesis). Univerza v Mariboru. Retrieved from https://dk.um.si/IzpisGradiva.php?id=57612 ; https://dk.um.si/Dokument.php?id=87734&dn= ; https://plus.si.cobiss.net/opac7/bib/19549462?lang=sl

Chicago Manual of Style (16^th Edition):

Cvikl, Aleš. “Vpliv kontrolne enote in modela zgorevanja na tranzietno delovanje motorja.” 2016. Masters Thesis, Univerza v Mariboru. Accessed February 28, 2021. https://dk.um.si/IzpisGradiva.php?id=57612 ; https://dk.um.si/Dokument.php?id=87734&dn= ; https://plus.si.cobiss.net/opac7/bib/19549462?lang=sl.

MLA Handbook (7^th Edition):

Cvikl, Aleš. “Vpliv kontrolne enote in modela zgorevanja na tranzietno delovanje motorja.” 2016. Web. 28 Feb 2021.

Vancouver:

Cvikl A. Vpliv kontrolne enote in modela zgorevanja na tranzietno delovanje motorja. [Internet] [Masters thesis]. Univerza v Mariboru; 2016. [cited 2021 Feb 28]. Available from: https://dk.um.si/IzpisGradiva.php?id=57612 ; https://dk.um.si/Dokument.php?id=87734&dn= ; https://plus.si.cobiss.net/opac7/bib/19549462?lang=sl.

Council of Science Editors:

Cvikl A. Vpliv kontrolne enote in modela zgorevanja na tranzietno delovanje motorja. [Masters Thesis]. Univerza v Mariboru; 2016. Available from: https://dk.um.si/IzpisGradiva.php?id=57612 ; https://dk.um.si/Dokument.php?id=87734&dn= ; https://plus.si.cobiss.net/opac7/bib/19549462?lang=sl

Universitat Politècnica de València

4. Moratal Martínez, Ausiás Alberto. EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE .

Degree: 2018, Universitat Politècnica de València

URL: http://hdl.handle.net/10251/111950

► La regulación mundial de emisiones contaminantes en el sector de la automoción está siendo cada día más estricta. La implantación de nuevos procedimientos está presionando… (more)

▼ La regulación mundial de emisiones contaminantes en el sector de la automoción está siendo cada día más estricta. La implantación de nuevos procedimientos está presionando la industria hacia la búsqueda de nuevas tecnologías que cumplan los objetivos de reducción de emisiones contaminantes. En el medio plazo se espera que las pruebas de emisiones a baja temperatura ambiente sean obligatorias en el proceso de homologación. La combustión a bajas temperaturas influye de forma importante en la velocidad de la reacción conllevando un aumento de las emisiones y finalmente al apagado de llama. Bajo estas condiciones, se produce un aumento de las emisiones de hidrocarburos (HC) y monóxido de carbono (CO) así como un aumento del consumo de combustible. Además, en condiciones de baja temperatura ambiente las emisiones de óxidos de nitrógeno (NOx) pueden aumentar debido a la desactivación de los sistemas de recirculación de gases de escape. En la presente tesis, se ha analizado el efecto de la baja temperatura ambiente en un motor diesel HSDI. Los ensayos fueron realizados en ciclos de conducción NEDC y WLTC. La influencia directa de las bajas temperaturas en las emisiones se analizó por medio de las medida bruta de contaminantes, aguas arriba de los sistemas de postratamiento. El funcionamiento de los sistemas de postratamiento también fue evaluado a bajas temperaturas mediante la eficiencia de la oxidación catalítica de HC y CO. Los resultados de este estudio mostraron un deterioro de las emisiones y del rendimiento efectivo a bajas temperaturas. El efecto de las bajas temperaturas varió dependiendo de condiciones de carga. El ciclo NEDC se consolida como el peor escenario de conducción, para la realización de pruebas a baja temperatura, con un incremento del 270% en HC, 250% en NOx, 125% en CO y 20% en consumo específico. El mayor grado de carga junto con el carácter más transitorio del ciclo WLTC mostraron un efecto menor de las bajas temperaturas ambiente con un aumento del 150% en HC y 250% en NOx. A diferencia del ciclo NEDC, las emisiones de CO se redujeron en un 20% y no se detectó un aumento del consumo de combustible. Además del aumento de la formación de contaminates, el análisis del catalizador de oxidación mostró una reducción de la eficiencia en ambos ciclos de conducción NEDC y WLTC. El presente trabajo tiene por objetivo comparar dos sistemas de gestión térmica para la mejora del funcionamiento de MCIA a bajas temperaturas. El primer sistema estaba basado en la gestión del flujo de refrigerante para evitar subenfriamiento en condiciones de funcionamiento en frío. Por un lado, se propusieron estrategias de bajo y nulo flujo en el circuito de refrigerante motor. Por otro lado, se realizaron ensayos con 0 flujo en el circuito de refrigerante del WCAC para evitar el subenfriamiento del aire de admisión durante puntos de baja carga en condiciones de funcionamiento en frío. El otro sistema incluía la recuperación de energía térmica del escape (EGHR). El refrigerante del WCAC se empleó como fluido de recuperación… Advisors/Committee Members: Lujan Martinez, José Manuel (advisor), Payri González, Francisco (advisor).

Subjects/Keywords: Diesel engines; Low ambient temperature; Emissions; Heat recovery; DOC; NEDC; WLTC

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

APA (6^th Edition):

Moratal Martínez, A. A. (2018). EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE . (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/111950

Chicago Manual of Style (16^th Edition):

Moratal Martínez, Ausiás Alberto. “EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE .” 2018. Doctoral Dissertation, Universitat Politècnica de València. Accessed February 28, 2021. http://hdl.handle.net/10251/111950.

MLA Handbook (7^th Edition):

Moratal Martínez, Ausiás Alberto. “EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE .” 2018. Web. 28 Feb 2021.

Vancouver:

Moratal Martínez AA. EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE . [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2018. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10251/111950.

Council of Science Editors:

Moratal Martínez AA. EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE . [Doctoral Dissertation]. Universitat Politècnica de València; 2018. Available from: http://hdl.handle.net/10251/111950

Brno University of Technology

5. Weidenhöfer, Jan. Problematika hodnocení produkce škodlivin ve výfukových plynech osobních vozidel: Issues of legislative tests in the assessment of exhaust pollutants.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/176904

► This work deals with issues of emissions in passenger cars with a focus on legislative tests in the European Union. At first, the reader is… (more)

Subjects/Keywords: Emise; emisní test; emisní norma; automobil; homologace; NEDC; WLTP; měření v reálném provozu; RDE; Emissions; emission tests; automobile; emission standard; homologation; NEDC; WLTP; measurements in real operation; RDE

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

APA (6^th Edition):

Weidenhöfer, J. (2019). Problematika hodnocení produkce škodlivin ve výfukových plynech osobních vozidel: Issues of legislative tests in the assessment of exhaust pollutants. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/176904

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):

Weidenhöfer, Jan. “Problematika hodnocení produkce škodlivin ve výfukových plynech osobních vozidel: Issues of legislative tests in the assessment of exhaust pollutants.” 2019. Thesis, Brno University of Technology. Accessed February 28, 2021. http://hdl.handle.net/11012/176904.

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

MLA Handbook (7^th Edition):

Weidenhöfer, Jan. “Problematika hodnocení produkce škodlivin ve výfukových plynech osobních vozidel: Issues of legislative tests in the assessment of exhaust pollutants.” 2019. Web. 28 Feb 2021.

Vancouver:

Weidenhöfer J. Problematika hodnocení produkce škodlivin ve výfukových plynech osobních vozidel: Issues of legislative tests in the assessment of exhaust pollutants. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/11012/176904.

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

Council of Science Editors:

Weidenhöfer J. Problematika hodnocení produkce škodlivin ve výfukových plynech osobních vozidel: Issues of legislative tests in the assessment of exhaust pollutants. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/176904

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

Loughborough University

6. Efthymiou, Petros. An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures.

Degree: PhD, 2015, Loughborough University

URL: http://hdl.handle.net/2134/19486

► Particulate number (PN) standards in current and future emissions legislation pose a challenge for designers and calibrators during the warm-up phases of cold direct injection… (more)

▼ Particulate number (PN) standards in current and future emissions legislation pose a challenge for designers and calibrators during the warm-up phases of cold direct injection spark ignition (DISI) engines. To achieve catalyst light-off conditions in the shortest time, engine strategies are often employed that inherently use more fuel to attain higher exhaust temperatures. These can lead to the generation of locally fuel-rich regions within the combustion chamber and hence the formation and emission of particulates. To meet these emissions requirements, further understanding of the DISI in-cylinder processes during cold-start are required. This thesis investigates the effect of cooling an optical research engine to temperatures as low as -7°C, one of the legislative test conditions. A high-speed 9 kHz optical investigation of the in-cylinder combustion and fuel spray along with in-cylinder pressure measurements was completed with the engine motored and fired at 1500 rpm during combustion conditions that were essentially homogeneous and stoichiometric. Results showed significant differences between the flame growth structures at various operating temperature conditions with the notable presence of fuel-rich regions, which are understood to be prominent areas of particulate formation. Measured engine performance parameters such as indicated mean effective pressure (IMEP) and mass fraction burned (MFB) times correlated with the observed differences in combustion characteristics and flame growth speed. It was shown that flash boiling of the fuel spray was present in the fully heated engine case and significantly reduced the penetration of the spray plume and the likelihood of piston crown and cylinder liner impingement. The flow and combustion processes of a transient production cold start-up strategy were analysed using high-speed particle image velocimetry (HSPIV). Results highlighted a broad range of flame structures and contrasting flame stoichiometry occurring at different times in the start-up process. Turbulent flow structures were identified that have an effect on the fuel spray development and combustion process as well as providing a path for cold-start emissions reduction. PN and transient hydrocarbon (HC) emissions were measured at cold conditions to further elucidate the effect of operating temperature and correlate emissions data with in-cylinder measurements. A clear link between the quantity and size range of particulate and HC emissions and operating temperature was shown and the precise in-cylinder location of HC emissions, caused by fuel impingement, was inferred from the HC emissions data.

Subjects/Keywords: 621.43; DISI; GDI; SI; Gasoline; ENGINE; Cold-start; NEDC; PM; PN; Particulates; Soot; Emissions

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

APA (6^th Edition):

Efthymiou, P. (2015). An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/19486

Chicago Manual of Style (16^th Edition):

Efthymiou, Petros. “An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures.” 2015. Doctoral Dissertation, Loughborough University. Accessed February 28, 2021. http://hdl.handle.net/2134/19486.

MLA Handbook (7^th Edition):

Efthymiou, Petros. “An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures.” 2015. Web. 28 Feb 2021.

Vancouver:

Efthymiou P. An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures. [Internet] [Doctoral dissertation]. Loughborough University; 2015. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/2134/19486.

Council of Science Editors:

Efthymiou P. An optical investigation of DISI engine combustion, fuel spray and emissions at cold-start temperatures. [Doctoral Dissertation]. Loughborough University; 2015. Available from: http://hdl.handle.net/2134/19486

7. Noralm, Zeerak. Implementing method for conducting Real Driving Emission (RDE).

Degree: Heat and Power Technology, 2018, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229083

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Det här projektet handlar om att utveckla en metod för real driving emission (RDE). RDE är ett komplement till Worldwide Light Duty Test Procedure… (more)

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Det här projektet handlar om att utveckla en metod för real driving emission (RDE). RDE är ett komplement till Worldwide Light Duty Test Procedure (WLTP) som kommer att ersätta New European Driving Cycle (NEDC). Dessa cykler och metoder används för att mäta personbilars avgaser. Huvudanledningen till varför NEDC ska bytas ut är för att körcyklerna inte längre är realistiska och reflekterar inte hur en bil presterar egentligen. Detta har lett till att bilar har högre bränsleförbrukning och högre avgasutsläpp när dom körs i trafiken jämfört med resultaten från NEDC.Metoden utvecklades genom hänvisningar till den officiella WLTP rapporten. Tillsammans med Vehicle Emission gruppen från AVL fastställdes en komplett steg för steg metod.Utrustningen som användes förseddes av AVL och flera tester av varje steg av metoden genomfördes för att förfina metoden så mycket som möjligt. Bilen som användes var en SAAB 9-5 2.0l bensin.Resultaten visade att både bilen och testet inte mötte kriterierna för RDE och godkändes inte av programmet som användes för att utvärdera testet. Detta var delvis för att kriterierna för RDE är strikta och delvis för att ingen pre och post test genomfördes eftersom det tar mycket tid för att dom testerna ska bli godkända.I överlag ger WLTP och RDE potentiella bilköpare en bättre detaljerad sammanfattning av hur bra bilen presterar i trafiken jämfört med NEDC.

This project is about developing a method for real driving emission (RDE). RDE is a complement to Worldwide Light Duty Test Procedure (WLTP) which will replace the New European Driving Cycle (NEDC). These cycles and procedures are used for measuring emissions for light duty vehicles. The main reason why NEDC is being replaced is because the driving cycles does not reflect how vehicles are normally driven. This has resulted in vehicles having higher fuel consumption and emitting more poisonous gases when driven on actual roads compared to the results from the NEDC.The method was developed by referring to the laws of the official WLTP report written by EU. Together with the Vehicle Emissions team at AVL a complete step by step method was established.All the equipment and instruments were provided by AVL and several tests of each step of the method was made to perfect the method as much as possible. The vehicle that was used was a 2005 SAAB 9-5 2.0l petrol.The results displayed that the car and the test did not meet the criteria for RDE and was not passed by the evaluating software. This was partly because the driving criteria for RDE are strict and can be difficult to achieve and partly because no pre and post test was made since it can take several tries before those tests are passed.Overall, WLTP and RDE give buyers a more detailed and better conclusion of how a car performs on the road compared to NEDC.

Subjects/Keywords: PEMS; RDE; Light Duty Vehicle; NEDC; PEMS; RDE; WLTP; NEDC; MAW; ECU; utsläpp/emission; körkriterier; Energy Engineering; Energiteknik

…Dieselgate NEDC (New European Drive Cycle) is the method used for measuring emissions… …manufacturers tested their vehicles for emissions using the NEDC cycle that stands for New European… …Driving Cycle. The NEDC cycle was developed during the 1980’s for the European market to test… …congested. As a result, the NEDC no longer reflects how cars are actually being driven on a daily… …basis. Figure 1 below depicts how a typical NEDC cycle looks like. 3 Figure 1, viewing NEDC…

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

APA (6^th Edition):

Noralm, Z. (2018). Implementing method for conducting Real Driving Emission (RDE). (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229083

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):

Noralm, Zeerak. “Implementing method for conducting Real Driving Emission (RDE).” 2018. Thesis, KTH. Accessed February 28, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229083.

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

MLA Handbook (7^th Edition):

Noralm, Zeerak. “Implementing method for conducting Real Driving Emission (RDE).” 2018. Web. 28 Feb 2021.

Vancouver:

Noralm Z. Implementing method for conducting Real Driving Emission (RDE). [Internet] [Thesis]. KTH; 2018. [cited 2021 Feb 28]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229083.

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

Council of Science Editors:

Noralm Z. Implementing method for conducting Real Driving Emission (RDE). [Thesis]. KTH; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229083

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

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

8. Triantafyllopoulos, Georgios. Assessment of technologies to reduce fuel consumption and pollutant emissions of modern passenger cars in real - world driving conditions.

Degree: 2018, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/45500

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In the context of this dissertation, the fuel consumption and emissions of many vehicles were measured under various driving conditions and emission and consumption reduction… (more)

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In the context of this dissertation, the fuel consumption and emissions of many vehicles were measured under various driving conditions and emission and consumption reduction technologies were investigated. The impact of conventional fuel consumption reduction technologies was simulated by modeling a gasoline and diesel vehicle under NEDC, WLTP and CADC driving cycles, using the AVL Cruise platform. The technologies tested include brake energy recuperation, start-stop, vehicle mass reduction, aerodynamic resistance reduction, rolling resistance reduction, gearbox changes and engine efficiency improvements. Each technology has a different impact on each driving cycle, while the overall reduction in fuel consumption and CO2 emissions achieved by combining all technologies was in the range of 12-14%. Concerning pollutant reduction technologies, the possibility of reducing NOx emissions of a Euro 6b diesel vehicle was studied. Initially, the vehicle was tested on the road following the RDE regulation where it emitted 5 times more NOx than the 80 mg/km limit. The vehicle’s engine operation was simulated on a laboratory dyno, where an identical engine was installed. Modifications were made to the exhaust aftertreatment system, including the replacement of the LNT system with an SCR system. The modifications reduced NOx emissions by 90%, achieving compliance with the Euro 6 limits without requiring any additional fuel consumption. The effect of driving conditions on emissions and fuel consumption was then addressed. In particular, three Euro 6 diesel vehicles were tested in the NEDC, WLTP, CADC driving cycles and on the road, on normal RDE-compliant routes and other more dynamic ones. The emissions reduction strategy of the three vehicles seems to be exclusively targeting the NEDC cycle, as at non-NEDC operating conditions the use of anti-pollution systems is minimized. WLTP emissions were closer to the emissions measured under real conditions; however, the engine operating range during the road tests was greater than the range during laboratory tests. In addition, NOx emission levels increase dramatically when driving the vehicle in a more dynamic manner outside the boundaries of the RDE regulation. Finally, on-road emissions measurements were carried out on a fleet of eight vehicles, two diesel, one gasoline, one LPG vehicle, one CNG, one hybrid and two older gasoline vehicles which had been converted to gasoline-LPG dual fuels. No fuel/engine type had low CO2, CO and NOx emissions over the full range of real world driving conditions. However, it is worth mentioning that the older gasoline-LPG vehicles had the worst emission performance, the CNG vehicle had the lowest CO2 emissions and the hybrid had the lowest CO and NOx emissions combined. With regard to conventional vehicle types, diesel vehicles had very high NOx emissions, while gasoline vehicles had extremely high CO emissions under dynamic driving conditions, reaching 35 times the regulatory limits.

Στα πλαίσια της παρούσας διατριβής αποτυπώθηκαν οι εκπομπές και…

Subjects/Keywords: Εκπομπές οξειδίου του αζώτου; Εκπομπές διοξειδίου του άνθρακα; Εκπομπές CO2; Εκπομπές NOx; Εκπομπές καυσαερίων; Μείωση εκπομπών; Ντίζελ; Εκπομπές σε πραγματικές συνθήκες οδήγησης; Κύκλος οδήγησης; RDE; CO2; NOx; Diesel; Euro 6; Vehicle emissinos; LPG; CNG; NEDC; WLTP; CADC; AVL Cruise; Fuel consumption; Emission reduction; Driving cycles

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

APA (6^th Edition):

Triantafyllopoulos, G. (2018). Assessment of technologies to reduce fuel consumption and pollutant emissions of modern passenger cars in real - world driving conditions. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/45500

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):

Triantafyllopoulos, Georgios. “Assessment of technologies to reduce fuel consumption and pollutant emissions of modern passenger cars in real - world driving conditions.” 2018. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed February 28, 2021. http://hdl.handle.net/10442/hedi/45500.

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

MLA Handbook (7^th Edition):

Triantafyllopoulos, Georgios. “Assessment of technologies to reduce fuel consumption and pollutant emissions of modern passenger cars in real - world driving conditions.” 2018. Web. 28 Feb 2021.

Vancouver:

Triantafyllopoulos G. Assessment of technologies to reduce fuel consumption and pollutant emissions of modern passenger cars in real - world driving conditions. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2018. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10442/hedi/45500.

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

Council of Science Editors:

Triantafyllopoulos G. Assessment of technologies to reduce fuel consumption and pollutant emissions of modern passenger cars in real - world driving conditions. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2018. Available from: http://hdl.handle.net/10442/hedi/45500

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

Universitat Politècnica de València

9. Ramírez Roa, Leonardo Andrés. Contribution to the Assessment of the Potential of Low Viscosity Engine Oils to Reduce ICE Fuel Consumption and CO2 Emissions .

Degree: 2016, Universitat Politècnica de València

URL: http://hdl.handle.net/10251/73068

► [EN] The automotive industry is currently experiencing one of its most rapidly changing periods in recent decades, driven by a growing interest in reducing the… (more)

▼ [EN] The automotive industry is currently experiencing one of its most rapidly changing periods in recent decades, driven by a growing interest in reducing the negative environmental impacts caused by fossil fuels consumption and the resulting carbon dioxide (CO2) emissions generated during the operation of the internal combustion engine (ICE) which have proven to contribute significantly to Global Warming. Given the fact that a total replacement of the current fleet, dependent of fossil fuels, is unlikely to happen in the immediate future and the urgency to reducing CO2 emissions from transportation in order to tackle Global Warming, it is possible to say that optimizing current ICE technologies and conventional vehicles and engines is a first order priority. Among the technical solutions developed to improve the efficiency of ICE, low viscosity engine oils (LVEO) have emerged as an effective and low-cost method that provides reductions in fuel consumption between 0.5% and 5%. During the development of this thesis, a test plan focused on determining fuel consumption reduction when low viscosity oils are used in light duty vehicles (LDV) and heavy duty vehicles (HDV) were carried out. The test plan has been divided in three parts; the first part was focused on the study of light-duty vehicles (LDV) using one diesel engine representative of the European market. During this part three testing modes were used: comparative motored, fired stationary points and transient homologation cycle tests. All test were performed in the engine test bed. The second part of the study consisted of another comparative test, this time using a different engine oils in a HDV fleet. The study was conducted using the urban buses fleet of the city of Valencia, including 3 buses models , with 2 different powertrain technologies. The third part of the study was focused on the friction coefficient behavior within the engine tribological pairs making comparative tests in two specialized tribometers; one of reciprocating action to simulate the lubrication conditions in the piston ring-cylinder liner contact and a "ball-on-disk" tribometer to simulate the lubrication in the distribution system. The various comparative studies have served to analyze how the friction and fuel consumption responded when LVEO were used both in the ICE and the complete vehicle contexts. The fuel consumption benefit found during the test was used to calculate the carbon footprint reduction when LVEO were used.; [ES] Actualmente la industria de la automoción vive uno de los periodos de cambio más vertiginosos de las últimas décadas, marcado por un creciente interés en reducir los impactos medioambientales negativos generados por el consumo de combustibles fósiles y sus consecuentes emisiones nocivas de dioxido de carbono (CO2) generados durante el funcionamiento del motor de combustión interna alternativo (MCIA). Teniendo en cuenta que el proceso de sustitución de la flota actual por una totalmente independiente de los combustibles fósiles puede tomar varias décadas, y… Advisors/Committee Members: Tormos Martínez, Bernardo Vicente (advisor).

Subjects/Keywords: Engine Fuel Consumption; Tribology; Low Viscosity Engine Oils; Real Fleet Testing; Engine Parametric Testing; HFRR, Ball-on-Disc; CO2 Emissions Reduction; NEDC, Screening Testing, Sommerfeld Number, Heavy Duty Vehicles, Light Duty Vehicles.

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

APA (6^th Edition):

Ramírez Roa, L. A. (2016). Contribution to the Assessment of the Potential of Low Viscosity Engine Oils to Reduce ICE Fuel Consumption and CO2 Emissions . (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/73068

Chicago Manual of Style (16^th Edition):

Ramírez Roa, Leonardo Andrés. “Contribution to the Assessment of the Potential of Low Viscosity Engine Oils to Reduce ICE Fuel Consumption and CO2 Emissions .” 2016. Doctoral Dissertation, Universitat Politècnica de València. Accessed February 28, 2021. http://hdl.handle.net/10251/73068.

MLA Handbook (7^th Edition):

Ramírez Roa, Leonardo Andrés. “Contribution to the Assessment of the Potential of Low Viscosity Engine Oils to Reduce ICE Fuel Consumption and CO2 Emissions .” 2016. Web. 28 Feb 2021.

Vancouver:

Ramírez Roa LA. Contribution to the Assessment of the Potential of Low Viscosity Engine Oils to Reduce ICE Fuel Consumption and CO2 Emissions . [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2016. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10251/73068.

Council of Science Editors:

Ramírez Roa LA. Contribution to the Assessment of the Potential of Low Viscosity Engine Oils to Reduce ICE Fuel Consumption and CO2 Emissions . [Doctoral Dissertation]. Universitat Politècnica de València; 2016. Available from: http://hdl.handle.net/10251/73068

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Open Access Theses and Dissertations