Open Access Theses and Dissertations

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University of Illinois – Urbana-Champaign

1. Motily, Austen. Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays.

Degree: MS, Mechanical Engineering, 2020, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/107927 

Among the range of commercially feasible propulsion systems, compression ignition (CI) engines present many advantages for light-duty vehicle operation. In particular, CI engines remain an optimal choice for unmanned aerial vehicles (UAVs) designed to operate at moderate flight speeds. However, one of the primary limitations of CI engines is that they require well-characterized, highly-reactive diesel fuel to operate properly. As the United States Department of Defense implements the single fuel concept and with global efforts to develop alternatively derived fuels, it is paramount that modern CI engines have the capability to perform with a diverse variety of fuel types. At its core, this challenge can be framed as an ignition problem, where low reactivity fuels and extreme operating conditions result in long ignition delays, engine misfires, and power loss. It is for this reason that novel ignition devices be developed to support reliable CI engine operation. Hot surface energy addition devices are a promising technology to improve ignition behavior, but the mechanisms by which the heating element supports the ignition process are not well understood. This study evaluates the performance and limitations of commercial off-the-shelf (COTS) heating elements in functioning as continuous-use ignition devices for kerosene-fueled CI engines. Furthermore, it examines the interaction between a single high-pressure fuel spray with a hot surface device in order to identify the most important parameters for optimizing ignition behavior. Results of these experiments demonstrate that existing heating elements can accelerate the ignition process for fuels with a wide range of reactivities, assuming a sufficient surface temperature can be achieved. Reaching these temperatures in an engine environment and maintaining these temperatures for long periods of operation, with acceptable heating element durability, will be the primary challenges in developing next-generation ignition systems. Advisors/Committee Members: Lee, Tonghun (advisor).

Subjects/Keywords: Hot surface ignition; Rapid compression machine; Fuel spray ignition; Energy assisted ignition; High-pressure fuel spray; Ignition modes; Ignition device; Fuel spray heat release; Low-reactivity fuels; High-speed chemiluminescence imaging

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

APA (6th Edition):

Motily, A. (2020). Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/107927

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

Chicago Manual of Style (16th Edition):

Motily, Austen. “Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays.” 2020. Thesis, University of Illinois – Urbana-Champaign. Accessed February 25, 2021. http://hdl.handle.net/2142/107927.

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

MLA Handbook (7th Edition):

Motily, Austen. “Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays.” 2020. Web. 25 Feb 2021.

Vancouver:

Motily A. Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2020. [cited 2021 Feb 25]. Available from: http://hdl.handle.net/2142/107927.

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

Council of Science Editors:

Motily A. Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays. [Thesis]. University of Illinois – Urbana-Champaign; 2020. Available from: http://hdl.handle.net/2142/107927

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


University of Windsor

2. Jiang, Xian Jian. Real Time Predictive Speed Analysis for High Speed Rail Collision Test.

Degree: MS, Computer Science, 2015, University of Windsor

URL: https://scholar.uwindsor.ca/etd/5441 

In a real train collision test, a train locomotive needs to be propelled on a straight, guided path, to a particular speed, at which time the train locomotive is released to coast down towards a barrier where it is required to crash at a desired speed. The current control of the release speed and location is based on theoretical data and previous experience which leads to less accuracy in the actual crash speed. In this research work, the goal is to make improvements in a typical real train collision test that will help obtain a more accurate crash speed and release location by controlling the force release precisely. The contribution of this research work is to implement a solution to simulate the behavior of the propulsion system, and trigger an algorithm to calculate the required release speed and location more accurately and quickly. Advisors/Committee Members: Wu, Dan.

Subjects/Keywords: coast down; collision test; crash speed; force release; release location; release speed

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

APA (6th Edition):

Jiang, X. J. (2015). Real Time Predictive Speed Analysis for High Speed Rail Collision Test. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5441

Chicago Manual of Style (16th Edition):

Jiang, Xian Jian. “Real Time Predictive Speed Analysis for High Speed Rail Collision Test.” 2015. Masters Thesis, University of Windsor. Accessed February 25, 2021. https://scholar.uwindsor.ca/etd/5441.

MLA Handbook (7th Edition):

Jiang, Xian Jian. “Real Time Predictive Speed Analysis for High Speed Rail Collision Test.” 2015. Web. 25 Feb 2021.

Vancouver:

Jiang XJ. Real Time Predictive Speed Analysis for High Speed Rail Collision Test. [Internet] [Masters thesis]. University of Windsor; 2015. [cited 2021 Feb 25]. Available from: https://scholar.uwindsor.ca/etd/5441.

Council of Science Editors:

Jiang XJ. Real Time Predictive Speed Analysis for High Speed Rail Collision Test. [Masters Thesis]. University of Windsor; 2015. Available from: https://scholar.uwindsor.ca/etd/5441

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