摘要
建立用特征线计算的代油器边界模型,利用非等墒特征线理论编制了可计算汽油机进气管内的压力波动及换气过程的计算机程序IEM,并用该程序对BJ492QA汽油机进行了计算,计算与实测的压力波曲线吻合良好,表明了该化油器边界模型及IEM的合理性。同时用该程序分析了6100Q汽油机的进气过程,探讨了进气管结构、配气相位对进气管压力波及充气系数的影响,指出了现有发动机存在的问题及改进方向。
The present thesis construct the boundary model on carburettors which is based on themethod of characteristics. The IEM computer program for computing the wave action and ex-change gas process of the gasoline engine is accomplished by using the method of characteristics.All calculation resulte are compared with the experimental curve of BJ492QA. The results showthe numerical solution is reasonable. The inlet system of 6100Qgasoline engine is analysed byusing the program. The author finds out that the constructions of the intake pipe and the distribu-tion diagram affect the pressure wave action of the intake manifold and the fill gas efficiency. Theauthor also points out the measures and direction of modification of the present engine.
出处
《长沙交通学院学报》
1997年第1期38-44,共7页
Journal of Changsha Communications University
关键词
化油器
边界模型
汽油机
carburettor
boundary model
simulation
characteristics