汽油机排气再循环控制系统设计

The design of electronic controlling EGR system for gasline engine

国外对EGR技术进行了比较深入的研究,积累了丰富的经验。国内由于排放法规的滞后,净化技术与国外仍然存在着较大差距。阐述了汽油机EGR控制策略,开发基于步进电机的汽油机EGR电控试验系统。该系统不但可以用于在发动机试验台架上测取EGR脉谱特性图,还能根据已有的EGR脉谱特性图的要求,实现整个转速、负荷范围内的自动控制。

Study on EGR has been carried on deeply and abundant experience has been accumulated in developed countries. However, there is a great lag between our emission control technology and advanced level This paper introduces the EGR controller＇s controlling strategy on gasoline engines. Development based on EGR stepper motor control system for gasoline engine. The system not only can be used to test the engine test bench to take EGR pulse spectrum characteristic diagram, but also according to the existing EGR pulse spectrum characteristic diagram of the requirements to achieve the speed and load range of automatic control.