Cylinder liner and piston ring friction wear test device

Abstract

The invention discloses a cylinder liner and piston ring friction wear test device. The cylinder liner and piston ring friction wear test device comprises a piston rod, a cylinder liner, a cylinder block clamping mechanism, a lifting mechanism, a crankshaft, a piston ring, a plug ring clamping mechanism, a guiding seat and an internal radial adjustment mechanism, the piston rod extends into the cylinder liner, the internal radial adjustment mechanism is fixed to the piston rod, the plug ring clamping mechanism is arranged on the internal radial adjustment mechanism, the piston ring is mountedon the plug ring clamping mechanism, and the piston ring is in contact with the inner wall face of the cylinder liner; and the cylinder liner is fixed to the cylinder block clamping mechanism, the cylinder block clamping mechanism is connected with the lifting mechanism, the end, extending out of an opening of the cylinder liner, of the piston rod penetrates into the guiding seat, and the crankshaft is in contact with the end, penetrating into the guiding seat, of the piston rod. A cylinder liner and piston ring friction wear test can be conducted on different series of step cylinder liners and different specifications of piston rings.

Description

technical field [0001] The invention relates to the field of mechanical performance testing, in particular to a cylinder liner-piston ring friction and wear test device. Background technique [0002] The cylinder liner and piston ring are one of the most important friction pairs of the compressor, and their friction and wear performance directly affects the performance of the compressor. Under different temperature and load conditions, the physical characteristics of the cylinder liner-piston ring will change significantly, which will affect its normal application. However, the cylinder liner-piston ring often works in harsh environments such as high temperature, resulting in thermal deformation of the cylinder liner-piston ring, changing the radial working clearance of its initial design, resulting in increased wear and reduced service life. At the same time, excessive temperature rise will change the rheological properties of the oil film, thereby affecting the friction p...

AI Technical Summary

Problems solved by technology

However, the cylinder liner-piston ring often works in harsh environments such as high temperature, resulting in thermal deformation of the cylinder liner-piston ring, changing the radial working clearance of its initial design, resulting in increased wear and reduced life

At the same time, excessive temperature rise will change the rheological properties of the oil film, which in turn will affect the friction performance of the cylinder liner-piston ring under high temperature conditions, resulting in failure phenomena such as cylinder scuffing and cylinder holding.

In addition, too low ambient temperature will deteriorate the tribological properties of piston ring and cylinder liner materials and the lubrication quality of lubricating oil, making the friction behavior between them more serious

[0003] At present, there are many types of cylinder liner-piston ring friction and wear test benches at home and abroad. It is expected to obtain the physical characteristics of various types and specifications of piston rings and cylinder liners under various temperature conditions, but the dimensions of piston rings and cylinder liners are often fixed. , few measurable variables, narrow versatility, cannot effectively simulate the actual working conditions of the cylinder liner-piston ring, and cannot simultaneously test the comprehensive performance of rolling bearings at high and low temperatures

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