金晖,陈伟国,冯心水

（奇瑞汽车股份有限公司,安徽 芜湖 241009）

    摘要：EGR分配均匀性是影响EGR汽油发动机燃油消耗率的主要因素之一。文本针对一款三缸EGR汽油发动机，利用一维仿真软件进行分析，发现EGR分配过渡板对EGR均匀性有直接的关系，并通过优化EGR分配过渡板尺寸，改善发动机EGR均匀性，达到降低发动机燃油消耗率的目的。

    关键词：EGR；分配过渡板；EGR均匀性

    Abstract: EGR uniformity is one of the main factors influencing the fuel consumption rate of EGR gasoline engines. Based on an analysis of a triplex EGR gasoline engine by using one-dimensional simulation software, it is found that the EGR transitional slab has a direct effect on EGR uniformity. After optimizing the allocation of EGR transition plate size, the EGR uniformity has been improved, reducing the engine fuel consumption rate.

     Key words: EGR; Transitional Slabs; EGR Uniformity