Method of enhancing wear resistance of cam and follower system in engine valve train

Wear of the valve train area in low–speed operation becomes critical as engines become capable of high–speed and high–power performance. This paper describes the development of a design process to secure for the valve train a constant supply of lubricant film with particular emphasis on maintaining optimum conditions of lubrication in the cam and follower system. With this design process, a valve train made of ordinary materials can be designed to achieve an improved level of scuffing resistance without reduction of maximum load capacity.