THEORETICAL AND EXPERIMENTAL SUBSTANTIATION OF A METHOD FOR INCREASING THE EFFICIENCY OF REPAIR OF ELECTRIC HYDRAULIC NOZZLES OF AUTOMOTIVE DIESEL ENGINES

THEORETICAL AND EXPERIMENTAL SUBSTANTIATION OF A METHOD FOR INCREASING THE EFFICIENCY OF REPAIR OF ELECTRIC HYDRAULIC NOZZLES OF AUTOMOTIVE DIESEL ENGINES

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The article deals with the issues of repair of electro-hydraulic nozzles (EHN), which are widespread in automotive Automotive Connectors and tractor diesel engines.The actual resource of the EHN is significantly lower than the declared one and its restoration by carrying out repair and maintenance operations is expedient, both from a technical and economic point of view.The analysis of typical EHN malfunctions shows that one of the most wear-out elements of EHN is the contact surface of the seat of a ball electromagnetic valve.

Typical and alternative technologies for repairing a valve seat are considered and a method for improving them with a vibration hardening of the contact surface is proposed.The goal and objectives of research are formulated.The theoretical substantiation of the process of vibration hardening of the Beast Machines EHN ball valve seat and its laboratory and bench studies, the results of which confirmed the working hypothesis about the possibility of forming a vibration rivet hardened contact surface of the valve, were carried out.

The application of the proposed method will increase the resource of the repaired injectors at low costs for its implementation.