CNG发动机阀座材料开发及其与气门匹配性试验

Development of valve seat for CNG engines and the valve test for matching

通过在强化型的基体材料中添加硬质颗粒和固体高温润滑剂,开发出了耐磨性高且具有自润滑性能的粉末冶金阀座材料。在用燃气加热的模拟试验机上进行对比试验,结果证明粉末冶金材料具有良好的综合性能。

A new P/M material of valve seat which has high wearability and self-lubricating properties was developed for CNG engines,by adding rigid-grains and high-temperature solid lubricants into harden-type base material.After compared testing through a gas-fired simulation-machine,it concludes that this new P/M material has good compositive performances.