TY - JOUR
T1 - The effect of turbulent jet induced by pre-chamber sparkplug on combustion characteristics of hydrogen-air pre-mixture
AU - Wu, Han
AU - Wang, Lili
AU - Wang, Xi
AU - Sun, Baigang
AU - Zhao, Zhenfeng
AU - Lee, Chia fon
AU - Liu, Fushui
N1 - Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2018/4/19
Y1 - 2018/4/19
N2 - Effect of turbulent jet ignition induced by pre-chamber sparkplug (PCSP), a simper version of turbulent jet ignition pre-chamber system without fuel injection, on the air-hydrogen combustion characteristics was conducted based on an optical constant volume chamber under varied equivalence ratio conditions. The dynamic pressure sensor and schlieren system were used to evaluate the heat release and flame propagation characteristics. The results confirm the feasibility of PCSP type turbulent jet. The jet increase the flame propagation speed significantly compared to standard ignition, which shorten ignition delay and combustion duration, advance T50 largely, and increase the maximum combustion pressure slightly. As a result, the combustion intensity is increased largely, especially under lean regime, the combustion intensity index can be as high as 1.7 at certain equivalence ratio. In addition, the PCSP turbulent jet reduces the sensitivity of heat release to variation of equivalence ratio, which is helpful to simplify the combustion controlling strategy. Furthermore, with the enhancement of the flame propagation, the tendency of knocking combustion can be suppressed potentially.
AB - Effect of turbulent jet ignition induced by pre-chamber sparkplug (PCSP), a simper version of turbulent jet ignition pre-chamber system without fuel injection, on the air-hydrogen combustion characteristics was conducted based on an optical constant volume chamber under varied equivalence ratio conditions. The dynamic pressure sensor and schlieren system were used to evaluate the heat release and flame propagation characteristics. The results confirm the feasibility of PCSP type turbulent jet. The jet increase the flame propagation speed significantly compared to standard ignition, which shorten ignition delay and combustion duration, advance T50 largely, and increase the maximum combustion pressure slightly. As a result, the combustion intensity is increased largely, especially under lean regime, the combustion intensity index can be as high as 1.7 at certain equivalence ratio. In addition, the PCSP turbulent jet reduces the sensitivity of heat release to variation of equivalence ratio, which is helpful to simplify the combustion controlling strategy. Furthermore, with the enhancement of the flame propagation, the tendency of knocking combustion can be suppressed potentially.
KW - Combustion intensity
KW - Flame propagation
KW - Hydrogen
KW - Pre-chamber sparkplug
KW - Turbulent jet ignition
UR - http://www.scopus.com/inward/record.url?scp=85044948517&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2018.02.155
DO - 10.1016/j.ijhydene.2018.02.155
M3 - Article
AN - SCOPUS:85044948517
SN - 0360-3199
VL - 43
SP - 8116
EP - 8126
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 16
ER -