Abstract

The analysis of the main typical damages of pistons of internal combustion engines, the subsequent refusals and the reasons of their defiant have been given. It is shown that for today cases of violation of the concept of the guaranteed providing a resource of the piston at a stage of its design take place. Options of forming of edges of combustion tubes of pistons of the diesel 4ChN12/14 are considered. In relation to operating conditions of automobile and tractor diesels borders of resource durability of alternative options of edges of combustion tubes are evaluated.

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