Honing cylinder sleeve and preparation method thereof

Abstract

The invention discloses a honing cylinder sleeve and a preparation method of the honing cylinder sleeve. The honing cylinder sleeve comprises a cylinder sleeve body. The inner hole wall of the cylinder sleeve body is provided with a honing overlapping curve texture. The overlapping curve texture has the parameters as follows: Rpq is smaller than or equal to 0.19, Rvq is larger than or equal to 0.9and smaller than or equal to 4, Rmq is larger than or equal to 70% and smaller than or equal to 92%, R3z is larger than or equal to 1.4 micrometers and smaller than or equal to 5.2 micrometers, and 5-36 pieces of Rvc (3 micrometers) are included. By the adoption of the honing cylinder sleeve and the preparation method of the honing cylinder sleeve, the matching airtightness between the overlapping curve texture of the honing cylinder sleeve and a piston ring is better, the formed oil film is uniform, the oil storage function is good, air leakage is avoided, the friction coefficient between the honing cylinder sleeve and the piston ring reaches 0.1 or less, the abrasion amount is small, the use performance of the honing cylinder sleeve is improved effectively, the service life of the honing cylinder sleeve is effectively prolonged, and meanwhile, the fuel economy is increased.

Description

technical field [0001] The invention relates to the technical field of cylinder liners, in particular to a honing cylinder liner. The invention also provides a preparation method of the honed cylinder liner. Background technique [0002] The cylinder liner is one of the key parts of the engine, and the structure of the inner surface of the cylinder liner directly affects the oil consumption and life of the engine. At present, there is a reticulated structure on the inner hole wall of the cylinder liner. The reticulated structure is composed of a reticulated texture and a small platform on the top. The reticulated texture is convenient for storing lubricating oil, which increases the actual bearing area of ​​the cylinder liner and is also conducive to the upward movement of the oil. Pumped to the upper working area of ​​the cylinder liner, the small platform on the top is conducive to the formation of a high-strength oil film, scraping the excess oil on the surface of the cy...

AI Technical Summary

Problems solved by technology

[0003] In summary, how to solve the problem of large friction coefficient and large amount of wear on the inner wall of the cylinder liner has become an urgent problem to be solved by those skilled in the art

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