一种国Ⅳ柴油机EGR阀结焦问题研究  

作　　者：张焕岩[1] 肖海云[1] 刘青林[1] 李杰[1] 

机构地区：[1]安徽江淮汽车股份有限公司,安徽合肥230022

出　　处：《科教文汇》2013年第26期209-210,共2页Journal of Science and Education

摘　　要：电控EGR阀能够更精确地控制EGR率,有效降低尾气中N0x(氮氧化物)的含量,但由于电控EGR阀要求的边界使用条件较为严格,也更容易出现问题。由于EGR阀对发动机的性能以及寿命有很大影响,因此发动机在开发过程中需要对EGR阀做可靠性验证试验。本文主要是以一种国四柴油机在试验过程中发生的结焦卡滞问题为案例,通过试验分析探讨EGR阀结焦问题的解决办法。Electric control EGR valve can more accurately control the rate of EGR, reducing the NOx of the exhaust gas. Due to strictly boundary requirements of Electrical control the EGR valve, problems tends to occur. Because EGR has a great influence on the performance and the life of the engine , so the engine needs to do reliability verification test on the EGR valve in the development process. This paper is mainly on taking the coking problem of the EGR valve of one E4 diesel engine for example, advisable solutions are discussed.

关 键 词：柴油机 电控 EGR 阀 结焦 温度 

分 类 号：TK42[动力工程及工程热物理—动力机械及工程]