• Journal of the Korea Society of Computer and Information
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• v.29 no.11
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• pp.317-324
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• 2024

This study is on the improvement of wear resistance of roller tappet assembly which is applied to V-956 engine. Although the TBO(Time Between Overhauls) of the engine and roller tappet assembly is more than 9,000 engine operating hours, about 60% engines which were operated within TBO suffered severe wear on roller tappet assembly and failed to operated normally. To find out the cause of wear of these roller tappet assembly, finite element analysis was performed using ABAQUS based on the investigation into roller tapper assembly and the operating conditions of V-956 engine. As a result, it was found that wear occurred due to the low hardness value of the roller surface under certain operating conditions, and based on the analysis results, we proposed the optimal hardness value for improving wear resistance on the surface of the roller tappet assembly. The results of this study were applied to the mass production of the corresponding roller tappet assembly and are currently in use.