进气总管长度对微型车发动机性能的影响

摘要

根据气体的波动效应分析发动机进气管长度对发动机充气效率的影响.利用GT - POWER模拟计算软件,在原发动机基础上分析计算了变进气系统的发动机在不同转速下的性能,同时研究了不同进气管长度对发动机动力性和经济性的影响.优化进气管长度使发动机在各工况都获得较高的充气效率,从而改善发动机性能并通过试验进行验证.%According to the effect of the gas fluctuation, the influence of the intake pipe length on the volumetric efficiency of engine is analysed. Based on the original engine, the performances of the engine with variable intake pipe length are simulated at different speeds by GT - POWER simulation software. The influence of different parameters is also discussed in this paper. Optimizing the intake pipe length can improve the volumetric efficiency and the performance of the engine. This is confirmed by experiment.