In this study, dynamic ϕ–T map analysis was applied to a reactivity controlled compression ignition (RCCI) engine fueled with natural gas (NG) and diesel. The combustion process of the engine was simulated by coupled kiva4-chemkin with a diesel oil surrogate (DOS) chemical mechanism. The ϕ–T maps were constructed by the mole fractions of soot and NO obtained from senkin and ϕ–T conditions from engine simulations. Five parameters, namely, NG fraction, first start of injection (SOI) timing, second SOI timing, second injection duration, and exhaust gas recirculation (EGR) rate, were varied in certain ranges individually, and the ϕ–T maps were compared and analyzed under various conditions. The results revealed how the five parameters would shift the ϕ–T conditions and influence the soot–NO contour. Among the factors, EGR rate could limit the highest temperature due to its dilute effect, hence maintaining RCCI combustion within low-temperature combustion (LTC) region. The second significant parameter is the premixed NG fraction. It could set the lowest temperature; moreover, the tendency of soot formation can be mitigated due to the lessened fuel impingement and the absence of C–C bond. Finally, the region of RCCI combustion was added to the commonly known ϕ–T map diagram.
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September 2016
Research-Article
Application of Dynamic ϕ–T Map: Analysis on a Natural Gas/Diesel Fueled RCCI Engine
Jing Li,
Jing Li
Department of Mechanical Engineering,
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: lijing@u.nus.edu
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: lijing@u.nus.edu
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Wenming Yang,
Wenming Yang
Department of Mechanical Engineering,
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: mpeywm@nus.edu.sg
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: mpeywm@nus.edu.sg
Search for other works by this author on:
Hui An,
Hui An
Engineering Cluster,
Singapore Institute of Technology,
Singapore 138683, Singapore
e-mail: Hui.An@SingaporeTech.edu.sg
Singapore Institute of Technology,
Singapore 138683, Singapore
e-mail: Hui.An@SingaporeTech.edu.sg
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Dezhi Zhou,
Dezhi Zhou
Department of Mechanical Engineering,
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: dezhizhou@nus.edu.sg
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: dezhizhou@nus.edu.sg
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Markus Kraft
Markus Kraft
Search for other works by this author on:
Jing Li
Department of Mechanical Engineering,
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: lijing@u.nus.edu
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: lijing@u.nus.edu
Wenming Yang
Department of Mechanical Engineering,
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: mpeywm@nus.edu.sg
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: mpeywm@nus.edu.sg
Hui An
Engineering Cluster,
Singapore Institute of Technology,
Singapore 138683, Singapore
e-mail: Hui.An@SingaporeTech.edu.sg
Singapore Institute of Technology,
Singapore 138683, Singapore
e-mail: Hui.An@SingaporeTech.edu.sg
Dezhi Zhou
Department of Mechanical Engineering,
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: dezhizhou@nus.edu.sg
Faculty of Engineering,
National University of Singapore,
Singapore 117575, Singapore
e-mail: dezhizhou@nus.edu.sg
Markus Kraft
1Corresponding author.
Contributed by the IC Engine Division of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received January 27, 2016; final manuscript received January 28, 2016; published online March 22, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. Sep 2016, 138(9): 092803 (10 pages)
Published Online: March 22, 2016
Article history
Received:
January 27, 2016
Revised:
January 28, 2016
Citation
Li, J., Yang, W., An, H., Zhou, D., and Kraft, M. (March 22, 2016). "Application of Dynamic ϕ–T Map: Analysis on a Natural Gas/Diesel Fueled RCCI Engine." ASME. J. Eng. Gas Turbines Power. September 2016; 138(9): 092803. https://doi.org/10.1115/1.4032712
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