摘要
通过发动机台架试验,对3种不同辛烷值汽油的燃烧特性、燃油经济性和排放性能进行了研究。试验研究结果表明,汽油辛烷值越低,其着火落后期和燃烧持续期越短,火焰传播速度和燃烧放热越快;燃用低辛烷值的汽油可以提高热效率,改善发动机的燃油消耗率;3种辛烷值汽油的THC,CO和NOx排放相差不大。
In this paper, it was studied by engine test that how the octane number influences the combustion characteristics, fuel consumption and exhaust emissions. The test results show that as the octane number decreases, the ignition delay and combustion duration become short, the speed of the flame increases and the heat release becbmes fast; it can improve the thermal efficiency and fuel consumption by using the low octane number gasoline; there is little difference for the THC, CO and NOx emissions of three gasoline fuels.
出处
《车用发动机》
北大核心
2006年第2期64-68,共5页
Vehicle Engine
基金
北京市重大项目"满足欧Ⅳ排放标准的清洁燃油组成与排放关系的研究"
关键词
辛烷值
燃烧特性
燃油消耗率
排放控制
octane number
combustion characteristics
fuel consumption rate
emission control
