喷油速率控制(简称EF)技术的应用,已经在世界范围内被看作为一种对油耗和颗粒排放没有不良影响,而能将NO_x排放和燃烧噪声降到最低限度的措施。本文论述了应用喷油速率控制技术时混合气形成的决定性因素,论述实现喷油速率控制的各种方法以及它们对NO_x/炭烟(颗粒)排放的影响。试验结果的分析表明,为了明显地达到发动机的预期的效果,就需要在增加废气再循环(以下简称AGR)的同时,采用日益完善的喷油速率控制技术。 The application of fuel injection rate control (EF) technology has been considered worldwide as a measure that minimizes NO x emission and combustion noise without adversely affecting fuel economy and particulate emissions. This article discusses the determinants of the formation of a mixture of gases using fuel injection rate control techniques and discusses various methods for controlling fuel injection rates and their effects on NOx / soot emissions. The analysis of the test results shows that in order to achieve the desired effect of the engine obviously, it is necessary to increase the exhaust gas recirculation (hereinafter referred to as AGR) and adopt the increasingly sophisticated fuel injection rate control technology.