Enhanced wear test system with valve-valve seat ring

Abstract

The invention provides an enhanced wear test system with a valve-valve seat ring. The enhanced wear test system comprises a control system, a mechanical system, a heating system and a lubricating system. Compared with the prior art, the enhanced wear test system has the following advantages that the wear test system integrates a heating system, a lubricating system, a mechanical system and a control system, and mechanical load and thermal load can be simulated and loaded at the same time. An inverted valve-valve seat ring structure is adopted, the spring is strengthened, and the spring pre-tightening force and the spring rigidity are increased, so that the valve seating force is increased, the one-time abrasion test period is shortened to 7-10 hours, and the multi-scheme valve-seat ring matching test efficiency is greatly improved. A PLC is adopted to remotely control starting and stopping of the test bench, data acquisition and online monitoring of the operation state, man-machine separation is achieved, and the safety and reliability of the test process are improved. The resistance furnace capable of accurately controlling the heating temperature simulates a valve-seat ring working temperature field, so that a tested piece is in a high-temperature state in the whole test process.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to a valve-valve seat ring enhanced wear test system. Background technique [0002] When the engine is running, the valve impacts the valve seat at high temperature. At the same time, the pair of friction pairs are also subjected to combustion pressure and high-temperature combustion gas. The harsh working conditions make the friction pair prone to wear and failure. With the improvement of engine output power and reliability requirements, the working conditions of valves and valve seat rings are becoming more and more severe. Some new materials and new technologies have been developed and applied to the friction pair to improve its wear condition, but at this stage, the material and strength matching of the valve seat ring cannot be fully verified before the engine test, and the engine on the whole machine Although the valve and seat wear test can simulate the actual working...

AI Technical Summary

Problems solved by technology

Some new materials and new technologies have been developed and applied to the friction pair to improve its wear condition, but at this stage, the material and strength matching of the valve seat ring cannot be fully verified before the engine test, and the engine on the whole machine Although the valve and seat wear test can simulate the actual working conditions of the engine, the test period is long, the cost is high, and the test data is scattered, so it is difficult to carry out targeted test verification for multi-program valve-seat matching

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