CN2136906Y

CN2136906Y - Full-sealing piston ring

Info

Publication number: CN2136906Y
Application number: CN 92203173
Authority: CN
Inventors: 刘昌斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-02-24
Filing date: 1992-02-24
Publication date: 1993-06-23
Anticipated expiration: 2002-02-24

Abstract

The utility model relates to a full-sealing piston ring which is used for the fields of an internal-combustion engine, a compressor, an air extractor, etc. The full-sealing piston ring which is used for the fields of an internal-combustion engine, a compressor, an air extractor, etc. is characterized in that two square step end surfaces which can be overlapped and connected are adopted by the opening of the full-sealing piston ring which is used for the fields of an internal-combustion engine, a compressor, an air extractor, etc. Even if the outer circle of the full-sealing piston ring is abraded, the opening is increased, and an air leakage channel can not be formed. The full-sealing piston ring which is used for the fields of an internal-combustion engine, a compressor, an air extractor, etc. has longer service life and good air tightness.

Description

Full-sealing piston ring

The utility model relates to a kind of fully-sealed piston ring, is mainly used in the higher compressor of internal combustion engine and seal request, air exhauster field.

Present widely used piston ring leaves the survivor of a murder attempt of regulation and forms disappointing passage by its working principle.After the piston ring excircle wearing and tearing, it dehisces to increase sealability decline, and then causes and lose heart seriously, causes that compression ratio reduces, and power loss increases, and wastes fuel oil etc.

The purpose of this utility model is to provide a kind of fully-sealed piston ring, does not dehisce to increase with the wearing and tearing of the cylindrical of piston ring to form disappointing passage under the normal conditions of piston ring work.

The utility model relates to a kind of fully-sealed piston ring, it is characterized in that having on the piston ring square end surface three end faces is square step, be that two end faces are square step wherein by casing wall one side, a step and above-mentioned two steps by piston one side are arranged side by side, the end face of this step is between above-mentioned two step end faces, and three steps on another end face of piston ring and above-mentioned three steps coincide.

Adopt the said piston ring of the utility model, have the following advantages: strengthen the tightness of piston, improve contractive condition; Prolong the working life of piston ring; Reduce the road number and the frictional loss of compression ring, prolong the cylinder body life-span.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the schematic representation of an end face of piston ring.

Fig. 2 is the schematic representation of piston ring lap-joint two square end surface.

Fig. 3 is the plan view behind the piston ring overlap joint.

Among the figure, 1--piston ring left end step surface 1; The step surface 2 of 2--piston ring right-hand member; The step surface 3 of 3--piston ring left end; The step surface 4 of 4--piston ring right-hand member; The step surface 5 of 5--piston ring right-hand member; The step surface 6 of 6--piston ring right-hand member; The air gap that 7--2,5 end faces form; The air gap that 8--1,4 end faces form; The air gap that 9--3,6 end faces form.

During work, piston ring is being close to up and down under the action of pressure up and down, and cylindrical contacts with cylinder body, and the air gap 8,9 that 1,4 end face, 3,6 end faces form can not formed disappointing passage by faying surface blocking-up up and down because of the wearing and tearing air gap increases yet.Gas 7 cracks that 2,5 end faces form also are blocked, and also can not form disappointing passage because of the wearing and tearing air gap increases equally.Because the overlap of dehiscing does not have relative movement, can not produce wearing and tearing again, and the overlap cylindrical is identical with other part cylindrical wearing and tearing, therefore faying surface and inside and outside faying surface can not form disappointing passage up and down.

Claims

1, a kind of fully-sealed piston ring, it is characterized in that having on the piston ring square end surface three end faces is square step, be that two end faces are square step wherein by casing wall one side, a step and above-mentioned two steps by piston one side are arranged side by side, the end face of this step is between above-mentioned two step end faces, and three steps on another end face of piston ring and above-mentioned three steps coincide.