Abstract

In this paper the method of cam profile wear calculation in internal combustion engine (ICE) valve gear is submitted. The calculation is executed with the account of the valve gear kinematic type, operating force factors, hydrodynamic lubrication conditions in the cam pair materials properties and also tribological characteristics changes during the maintenance. Besides the influence of cam wear process on automobile engine efficiency is investigated. It gives the possibility to predict camshaft’s serviceability and durability both at the design stage and at the stage of operation

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