【摘要】 为通过排气再循环 (EGR)降低车用汽油机的 NOx排放 ,对 EGR率特性进行了试验优化 .开发了两类压力控制式 EGR系统 ,给出了其组成、结构及工作原理 ,以及实测的 EGR率特性 .比较了用各种 EGR系统整机的排放试验结果更多还原

【Abstract】 In order to decrease NOx emission for an automotive gasoline engine by means of exhaust gas recirculation(EGR),the EGR rate characteristic was optimized experimentally on a dynamometer test bed. Two kinds of pressure controlled EGR systems were developed and their compostions and functions were described. The EGR rate characteristics of the systems were measured. Emission test results of the engine with developed EGR systems were obtained and compared.更多还原