对车用柴油机国IV以上技术路线的思考

Considering over Technical Course above Guo IV Diesel Engine Used on Vehicle

目前我国车用柴油机执行国Ⅲ排放标准，不久将实施国Ⅳ排放标准。对于柴油机来说，从国Ⅲ排放标准升级到国Ⅳ排放标准，仅仅依靠机内净化已无法满足排放要求，必须对排出的废气进行机外净化处理。也就是说国Ⅳ柴油机需要在进一步改进国Ⅲ发动机整机技术，尤其是优化燃烧的基础上加装机外尾气处理装置。

At present,the emission standards implemented for diesel engine on vehicle in China,the national Guo III,soon it will be replaced by Guo IV.As to the diesel engine,there is no way already to satisfy the emission requirement only by depending on purification from engine inside,and the emission gas must be purified by process from engine outside.That is also to say,further improvement of whole set technology of Guo III engine is required for the Guo IV engine,especially based on optimal burning,additional disposal device for exhaust gas must be installed on the engine externally.