火花点火式发动机进气过程中充气效率及均匀性研究

Study of Volumetric Efficiency and Distribution Evenness on Excharge Process in Spark Ignition Engines

利用所建立的进气模型，以实测的进气管内气流的速度和压力为边界条件，对火花点火式发动机的进气特性进行了数值计算和分析，并对火花点火式发动机的各缸进气瞬态性能进行了分析评估，结果表明所采用的研究方法具有较高的实用价值。

Numerical calculation and analysis of the intake charge performance are made by means of established excharge process model for S. I- engines and measured the velocity and pressure of gas flow in intake n1anifold. The transient per formance of intake charge is analysed and evaluated for S. I. engines. It is shown from the results that the research method have higher practical value.