姜淑君;高莹;马雁   

摘要：本文采用多次喷射技术和DOE设计技术开发了WP12国Ⅳ发动机。开发过程中,综合考虑了NOx、PM与燃油经济性三者的折衷关系,研究了预喷变量对NOx排放的影响。结果表明:合适的多次喷射策略能有效降低发动机燃烧噪声、排放和燃油消耗率;采用DOE设计技术能更准确地得到最佳多次喷射控制策略。

关键词： 多次喷射;预喷;DOE;NOx;燃油消耗率

Abstract: The paper develops WP12 EURO Ⅳ engine using the method of multiple-injection and DOE design.The relation between NOx,PM and fuel economy is considered and the effect of pilot injection on NOx emission is researched.The results show that the right multiple-injection can efficiently reduce engine combustion noise,emission and fuel consumption.The best method of multiple-injection can be achieved by DOE design.

Keywords: Multiple-injection;Pilot Injection;DOE;NOx;Fuel Consumption

参考文献:

  [1]Z.Hart,A.Uludogan,G Hampson and R.D.Reitz.Mecha-nism of Soot and NOx Emission Reduction Using Multiple—Injection in a Diesel Engine.SAE Paper 960633.

  [2]周龙保,等.内燃机学.机械工业出版社