TY - GEN
T1 - Numerical studies of glow plug shield on natural gas ignition characteristics in a CI engine
AU - Pan, Kang
AU - Wallace, James S.
N1 - Publisher Copyright:
Copyright © 2016 by ASME.
PY - 2016
Y1 - 2016
N2 - This paper presents a numerical study on fuel injection, ignition and combustion in a direct-injection natural gas (DING) engine with ignition assisted by a shielded glow plug (GP). The shield geometry is investigated by employing different sizes of elliptical shield opening and changing the position of the shield opening. The results simulated by KIVA-3V indicated that fuel ignition and combustion is very sensitive to the relative angle between the fuel injection and the shield opening, and the use of an elliptical opening for the glow plug shield can reduce ignition delay by 0.1~0.2ms for several specific combinations of the injection angle and shield opening size, compared to a circular shield opening. In addition, the numerical results also revealed that the natural gas ignition and flame propagation will be delayed by lowering a circular shield opening from the fuel jet center plane, due to the blocking effect of the shield to the fuel mixture, and hence it will reduce the DING performance by causing a longer ignition delay.
AB - This paper presents a numerical study on fuel injection, ignition and combustion in a direct-injection natural gas (DING) engine with ignition assisted by a shielded glow plug (GP). The shield geometry is investigated by employing different sizes of elliptical shield opening and changing the position of the shield opening. The results simulated by KIVA-3V indicated that fuel ignition and combustion is very sensitive to the relative angle between the fuel injection and the shield opening, and the use of an elliptical opening for the glow plug shield can reduce ignition delay by 0.1~0.2ms for several specific combinations of the injection angle and shield opening size, compared to a circular shield opening. In addition, the numerical results also revealed that the natural gas ignition and flame propagation will be delayed by lowering a circular shield opening from the fuel jet center plane, due to the blocking effect of the shield to the fuel mixture, and hence it will reduce the DING performance by causing a longer ignition delay.
UR - https://www.scopus.com/pages/publications/85011983816
U2 - 10.1115/ICEF20169445
DO - 10.1115/ICEF20169445
M3 - 会议稿件
AN - SCOPUS:85011983816
T3 - ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
BT - ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
PB - American Society of Mechanical Engineers
T2 - ASME 2016 Internal Combustion Engine Fall Technical Conference, ICEF 2016
Y2 - 9 October 2016 through 12 October 2016
ER -