Fully-sealed mother-child double-layer piston ring

Abstract

The invention discloses a fully-sealed mother-child double-layer piston ring. According to the fully-sealed mother-child double-layer piston ring, the integrated fully-sealed double-layer ring is composed of a mother ring and a child ring, the mother ring is an outer large-channel-angle circular ring opening, an outer large channel angle can contain the child ring, and the child ring is a square-strip-shaped circular ring opening and is installed in the outer large channel angle of the mother ring, so that the integrated double-layer piston ring is formed; openings of the double layer of ringsare staggered by 180 degrees, the contact faces of the mother ring and the child ring in the large channel angle are in elastic gapless fit, the fully-sealed mother-child double-layer ring is precisely and integrally machined, and an abrasion opening gap of the fully-sealed mother-child double-layer ring can reach the limit in actual use and is always in a mechanical structure sealing state; anda single piston ring which is generally used at present cannot be compared with the fully-sealed mother-child double-layer piston ring, the helpfulness is brought to an existing internal combustion engine, and the durability and the service life are one to two times those of an existing ring made of same materials. The fully-sealed mother-child double-layer piston ring is always in a sealed stateno matter how large the abrasion is, and the fully-sealed mother-child double-layer piston ring is novel, unique and practical in design, simple in structure and easy to manufacture. The fully-sealedmother-child double-layer piston ring is a new product which does not appear in internal combustion engines all over the world.

Description

technical field [0001] The invention relates to a piston ring, in particular to a fully sealed mother-child double-layer piston ring. Background technique [0002] The existing common ones are single cast iron rings and steel rings. Since the appearance of internal combustion engines, they have been single rings, and their quality has improved, but their shape and structure have not changed. If the gap of the wear opening is too large, there will be insufficient power, consumption of engine oil and fuel, and waste gas will be pressed into the crankcase to pollute the engine oil, which is harmful to the moving parts of the engine. [0003] Therefore, those skilled in the art are committed to developing a kind of seal that is good, so that the internal combustion gas cannot be strung into the crankcase from the opening of the ring, even if the gap between the openings of the ring is worn to the limit, the gas still cannot be strung into the crankcase from the opening of the ri...

AI Technical Summary

Problems solved by technology

[0004] In view of the common use of single piston rings in existing internal combustion engines, due to the defects of excessively large opening gaps due to natural wear and short service life, the technical problem to be solved by the present invention is to provide another kind of piston ring with good sealing performance, long service life and novel structure. Fully sealed female and child double-layer piston rings

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