摘要
以二甲醚、甲烷/丙烷混和物、异辛烷/正庚烷混合物作为燃料,模拟研究了燃料成分、压缩比、燃空当量比、进气温度、进气压力对均质充量压燃(HCCI)发动机着火时刻的影响。计算结果表明:随燃料十六烷值的增加,着火延迟期减小;随燃料辛烷值的增加,着火延迟期增加。而压缩比,燃空当量比,进气温度对三种燃料着火时刻有显著影响。进气压力的变化对高十六烷值的燃料着火延迟期影响较小,但对辛烷值高的气体燃料着火延迟期影响比较明显。
The effects of fuel composition, compression ratio, air-fuel equivalence ratio, inlet air temperature and pressure on the homogeneous charge compression ignition（HCCI） engine were studied by taking the mixture of the DME, mcthane/propane, and mixture of n heptane and iso-octane as the fuel. The calculation results indicate that the ignition delay is reduced with the increase of octane number while it is raised with the increase of octane number. The compression ratio, air fuel equivalence ratio and inlet air temperature have great effects on the ignition time of above three kinds of fuel. The inlet air pressure has the relatively less influence on the ignition delay of the high octane number fuel, but has an obvious effect on the ignition delay of the high octane number fuel.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2006年第6期21-25,共5页
Chinese Internal Combustion Engine Engineering
