中国机械工程Issue(5)：704-709,6.DOI:10.3969/j.issn.1004132X.2015.05.024
DLC涂层改善气门挺柱摩擦学性能的试验研究
Experimental Study on Effects of DLC Coating on Improvement of Tappet Tribology Characteristics
李伟军 1李周裕 1王媛慧1
作者信息
- 1. 上海汽车集团股份有限公司，上海，201804
- 折叠
摘要
Abstract
In order to analyze the effects of DLC coating on tribology characteristics of valve tap-pet,tappets with three different kinds of surface treatment were prepared and valvetrain mechanism test bench was built.Then friction loss of valve tappets with different valve tappet top surface treat-ment was tested under different oil temperature.Surface profiles of valve tappets and cams were test-ed before and after the experiments to study the surface characteristic and anti-wear ability of DLC coating.The results show that DLC coating can reduce surface roughness of tappet and DLC coating with Si has extremely small roughness.Friction torque between tappet and cam decreases as the rota-tion speed of camshaft gets bigger and increases when the oil temperature is higher.DLC coating can effectively improve friction loss.Compared with traditional tappet with carbonitriding,DLC coating with Si can cut down friction loss by as large as 20%.Tappets with no coating and with coating with-out Si have bad anti-wear ability,while DLC coating with Si has prefect wear resistance ability.关键词
汽油机/DLC涂层/气门挺柱/摩擦学/配气系统试验台架Key words
gasoline engine/DLC coating/valve tappet/tribology/valvetrain mechanism test bench分类
能源科技引用本文复制引用
李伟军,李周裕,王媛慧..DLC涂层改善气门挺柱摩擦学性能的试验研究[J].中国机械工程,2015,(5):704-709,6.
