EXPERIMENTAL ANALYSIS OF INSTANTANEOUS ROLLER SLIP

Abstract

Constant strides are being made to improve vehicle efficiencies in order to reduce fuel consumption, meet environmental regulations and increase longevity of engine components. One key areas of focus to do the same is the cam follower interaction in the engine valve train. Slippage and/or inertial movements often take place between the cam and follower in an engine valve train which affects the valve timings of the engine leading to suboptimal combustion and also leads to wear and tear in the cam shaft reducing the component life. We study how these irregular movements vary across different follower types and on different roller coatings. We require precise data regarding the roller positions with respect to different cam positions specifically at positions where slippage/inertial movements occur on the roller follower. Using our experimental technique, we begin to understand the reasons behind the irregular movements thereby adding valuable data to research in this area. Our task will involve the instrumentation of multiple different rollers followed by test runs and data collection