EXPERIMENTAL ANALYSIS OF CAM AND FOLLOWER OF VALVE TRAIN SYSTEM FOR PREDICTION OF WEAR-RATE

MECHANICAL ENGINEERING

A particular type of contact condition, known as cam and follower contact, exists in the direct valve train system of an engine and is partly responsible for wear. In this thesis the wear analysis of cam and follower contact system are analyzed. Based upon the theoretical analyses, a theoretical model for evaluating the tribological performance of the valve train was developed. A multi-aspect comparison between theoretical and experimental results was made. A good agreement between theoretical and experimental results showed that the model provided a reliable prediction of the tribological characteristics of the cam/follower. To understand the wear behavior of different MMC materials, wear tests are often carried out with suitable wear testing techniques. There are different types of wear mechanisms involved, for example, adhesive wear, abrasive wear, or others. However, adhesive wear is by far the most dominant form of material loss among sliding components in machinery the pin-on-disc test is a classical method commonly used for adhesive wear experiments. During the experiment, the sliding between the pin and disc may result in wear on both contact surfaces of the pair.

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