Piston cylinder sleeve

Abstract

The invention discloses a piston cylinder sleeve. The piston cylinder sleeve comprises a cylinder sleeve body and further comprises a piston arranged in the cylinder sleeve body in a sliding mode. Oilconveying grooves shaped like a positive Chinese character eight are formed in the outer side walls of the two sides of the top of the piston, and the two ends of the two oil conveying grooves shapedlike the positive Chinese character eight communicate to each other. Oil conveying grooves shaped like an inverted Chinese character eight are formed in the outer side walls of the two sides of the bottom of the piston, and the two ends of the two oil conveying grooves shaped like the inverted Chinese character eight communicate to each other. According to the piston cylinder sleeve, when lubricating oil enters a first piston cavity and a second piston cavity through a first oil inlet channel and a second oil inlet channel, impurities among the piston cylinder sleeve can be brought into the first piston cavity and the second piston cavity, and sponge pads are arranged on the two sides in the first piston cavity and the two sides in the second piston cavity, so that the impurities enteringthe first piston cavity and the second piston cavity through the first oil inlet channel and the second oil inlet channel can be blocked by the two sponge pads and stay in the first piston cavity andthe second piston cavity, and meanwhile the impurities is prevented from being discharged again.

Description

technical field [0001] The invention relates to the technical field of piston and cylinder liners, in particular to a piston and cylinder liner. Background technique [0002] Cylinder liners are divided into two categories: dry cylinder liners and wet cylinder liners. The cylinder liner whose back side does not contact the cooling water is called a dry cylinder liner, and the cylinder liner whose back side is in contact with cooling water is a wet cylinder liner. The dry cylinder liner has a thinner thickness, simple structure and convenient processing. The wet cylinder liner is in direct contact with the cooling water, so it is beneficial to the cooling of the engine, and is conducive to the miniaturization and weight reduction of the engine. [0003] The surface of the inner wall of the current piston and cylinder liner is smooth, and the lubricating oil cannot be evenly distributed between the piston and the cylinder liner. When the piston reciprocates in the cylinder l...

AI Technical Summary

Problems solved by technology

[0003] The surface of the inner wall of the current piston and cylinder liner is smooth, and the lubricating oil cannot be evenly distributed between the piston and the cylinder liner. When the piston reciprocates in the cylinder liner, dry friction between the piston and the cylinder liner is prone to occur, and a large amount of heat is generated, which increases the The load on the piston and piston liner reduces the service life of the piston and piston liner

Images