A multizone p - pdf is applied to calculate the instantaneous rate of no _ ( x ) with high turbulent conditions in the lpg engine . 4 . construct an experimental spark - ignited premixed - charge lpg single fuel engine with universal wide range exhaust gas oxygen sensor 4建立稀氧传感器反馈控制的lpg发动机实验系统，准确控制发动机的实验参数和工况，得到不同空燃比、不同点火提前角、不同燃料成分时发动机的动力性能和排放性能。
