气体燃料发动机的高性能气门座圈材料开发

Development of high performance valve seat insert materials for gas engines

烧结材料广泛用于气门座圈(VSI)。当用于气体燃料(LPG,CNG)发动机时,由于环境干燥,VSI磨损量增大。介绍了气体燃料发动机用的,两种新开发的高性能VSI材料。为增高耐磨性,这些材料应用的新工艺是,高性能硬质颗粒和固体润滑剂新分布方法。

Sintered materials have been applied widely in Valve Seat Inserts（VSI）.The amount of wear on VSIs increases when used in gas（LPG,CNG） engines because of their dry environments.In this paper,two newly developed high performance VSI materials for gas engines are introduced.These materials applied new techniques,which are both high performance hard particle and new distribution method of solid lubricant,to increase wear resistance.