甲醇发动机进气系统的优化研究

Optimization Study of Methanol Engine Inlet System

基于一维发动机设计分析软件GT-POWER,建立了四缸点燃式甲醇发动机的整机仿真模型,分析计算在不同工况下,进气系统结构参数的变化对甲醇发动机的影响,其中包括进气总管、进气歧管和进气道的长度、直径及角度等参数.研究结果表明:当进气总管的长度为150mm、直径为55mm、角度为90°时,缸内压力、放热率最高,一氧化碳的排放最低,进气歧管最合适的长度为100mm.

In this study,the effects of inlet system parameters was studied based on the one-multidimensional GT-Power model,including lengths,diameters and angles of inlet pipes.The results showed that as the inlet main length was 150 mm,diameter is 55 mm,and inlet angle was 90°,heat release ratio reached peak and CO emission was lowest.While the most suitable length of inlet manifold length was 100 mm.