汽油机恒转速增转矩瞬态工况燃烧特性的实验研究

An Experimental Study on Transient Combustion Characteristics of Gasoline Engine with Constant Speed and Increasing Torque

针对汽油机瞬态工况所面临的某些问题,采用实验手段研究了汽油机恒转速增转矩瞬态工况下的燃烧过程,通过与稳态工况比较,分析了其示功图、平均指示压力、最高燃烧压力及其对应的曲轴转角、瞬时放热过程以及累计放热过程等参数,得出了汽油机恒转速增转矩瞬态工况下燃烧的特性。

The transient combustion process of gasoline engine under a condition of constant speed ann mcreasing torque is experimentally studied and the corresponding transient combustion characteristics are obtained with a number of parameters analyzed and compared to that in stable condition, including indicated diagram, mean effective pressure, peak combustion pressure and its corresponding angle, as well as transient and cumulated heat release curves.