Abrasion tester for cylinder sleeve-piston ring friction pair

Abstract

The invention discloses an abrasion tester for a cylinder sleeve-piston ring friction pair. The structure of the abrasion tester is as follows: a cylinder sleeve is fixed between first and second positioning frames; an inner sleeve is arranged in an outer sleeve; the outer sleeve is connected with a pressure spring base through a thread; inner ends of a double annular elastic supporting rod are horizontally embedded in grooves of third and fourth positioning frames; a piston ring is arranged in the groove between fifth and sixth positioning frames; an outer diameter of the piston ring is glued to an inner wall of the cylinder sleeve; the inner surface of the piston ring is tightly pressed by the outer ends of the double annular elastic supporting rod; and four stretching force sensors are uniformly mounted between the second positioning frame and a screw carriage at intervals. In the abrasion tester, a piston ring radial loading mechanism is formed by four positioning frames and the double annular elastic supporting rod; a piston ring axial loading mechanism is formed by the pressure spring base and the pressure spring, so that the change condition of explosion pressure endured by the piston ring at practical work is simulated; and the abrasion tester provided by the invention can excellently simulate the practical working condition and has the advantages of short test period, low test cost, and the like.

Description

Technical field [0001] The invention belongs to an engine performance test device, and in particular relates to a device for testing the friction and wear of an engine piston ring. Background technique [0002] Cylinder liner and piston ring are one of the most important friction pairs of the engine. Their friction and lubrication performance directly affects the engine's power, emission and fuel economy. Therefore, the friction and lubrication characteristics of the cylinder liner-piston ring are studied experimentally. It is of great significance. [0003] The current experiments on the friction and wear performance of cylinder liner-piston ring mainly include sample test method, component simulation test method, engine bench test method, and installed use test method. The sample test method is to cut the cylinder liner and piston ring into a standard sample shape and size for testing on a testing machine. This method has simple samples, easy control of test parameters, good rep...

AI Technical Summary

Problems solved by technology

The advantage is that the simulation is the same as the actual situation, and the conditions are well controllable, but the test period is long and the cost is high

The installation and use test method is to install the piston ring and carry out the test under the actual working conditions. The advantage is that the exact same working conditions can be obtained, but the test cycle and test cost are greatly increased.

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