CNG发动机燃烧过程的CFD模拟计算

CFD Simulative Calculation of the Combustion Process for a CNG Engine

应用AVL-FIRE软件对某CNG发动机建立工作过程的计算模型,并对燃烧过程进行数值模拟,通过改变模型中的过量空气系数和点火提前角等工作参数对该机性能的影响进行分析,从而为发动机的参数优化匹配提供方向性指导。

In this paper, a numerical simulation of combustion process for a CNG engine is carried out by using the commercial computational fluid dynamics software AVL- FIRE. The paper analyzes the capability of the engine by adjusting the coefficient of excess air and spark advance angle, consequently provides the guidance to optimize and match the parameters of the engine.