CN2359472Y

CN2359472Y - New structure piston ring

Info

Publication number: CN2359472Y
Application number: CN 97232704
Authority: CN
Inventors: 钱永海
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-24
Filing date: 1997-04-24
Publication date: 2000-01-19
Anticipated expiration: 2007-04-24

Abstract

The utility model discloses a piston ring with a novel structure, which is characterized in that the interior of the sealing ring groove 2 of a piston 1 is provided with two air rings 3 of which the opening directions are opposite. The two sides of the openings of the air rings 3 and an oil ring 4 are provided with stop openings 6 arranged in paired manner and can be butted with each other. The utility model has the advantages of simple structure, convenient assembly, maintenance and operation, reliable sealing, avoidance of the up push of machine oil and the downward push of exhaust air, enhancement of compression ratio, enhancement of the availability and utility time of the piston ring and the prolongation of the service life of machines.

Description

A kind of piston ring of new structure

The utility model relates to piston internal-combustion engine or compressor, particularly the seal ring of engine piston.

The piston of the explosive motor of prior art, when cooperating with cylinder liner, generally with Spielpassung, but in order to prevent that the pressurized gas in the working procedure from scurrying into crankcase, following the scurrying of reducing compression ratio or waste gas produces carbon distribution and causes wearing and tearing to form vicious circle, prevents to scurry on the machine oil in the crankcase increase that causes fuel consumption simultaneously, generally establish 2-3 road piston packing ring and 1-2 road oil ring with every piston, be called compression ring and oil ring, the opening of three road piston gas rings differs 120 degree, evenly arranges.In use, with the increase of wearing and tearing, the opening of ring strengthens, and sealability reduces, and is easy to generate gas leakage, reduces compression ratio, and underpower starts difficulty and waste gas to the pollution of lubricant oil etc.Main a bit is loss lubricant oil and because of the burning of lubricant oil produces carbon deposit, influence is used.If the opened gap of ring is reduced, in use cause the piston ring expanded by heating easily, stuck in annular groove, aggravation to the fracture failure of the wearing and tearing of cylinder liner or ring or simultaneously the scored cylinder cover inwall and lost efficacy, influence is used.

The purpose of this utility model is in order to overcome the deficiency of prior art, to design a kind of piston ring of new structure.

The purpose of this utility model realizes according to structure described below, and the piston ring of this new structure comprises compression ring and oil ring, it is characterized in that being equipped with in the closure gasket groove 2 of piston 1 two compression rings 3 that opening direction is opposite.The organization plan of the piston ring of another kind of structure is characterized in that the opening both sides of described compression ring 3 and oil ring 4 have the seam that can dock 6 of pairing design.

The utility model has the advantages that simple in structure, the assembling and keep in repair easy to use, sealing is reliable, reduced machine oil on scurry with the following of waste gas and scurry, improved compression ratio, the opening of piston ring can be bigger, significantly reduced piston ring stuck probability in annular groove, do not influence piston ring and cylinder liner sealing, increase working life of machine.

Description of drawings, accompanying drawing 1 are the assembly structure schematic representation of piston of the present utility model and piston packing ring, and accompanying drawing 2 is assembly structure schematic representation of the piston ring of another kind of plan plot, and accompanying drawing 3 is the piston gas ring of opening and the hatch frame schematic representation of oil ring.The name of each sequence number in the accompanying drawings is called: 1, piston, 2, closure gasket groove, 3, compression ring, 4, oil ring, 5, oil ring groove, 6, seam.

Below in conjunction with the embodiment in the accompanying drawing, describe structure of the present utility model and use in detail.With reference to accompanying drawing 1, the compression ring 3 of two piston rings is housed in the closure gasket groove 2 of piston 1.Opposite 180 degree of the opening direction of these two compression rings.Six compression rings in three annular grooves, the opening of the opening of first compression ring and first compression ring in first annular groove differs 120 degree from second annular groove, and the opening of second compression ring in this annular groove differs 180 angles of spending with first.The opening of first ring in the opening of first ring in the 3rd annular groove and second groove also differs 120 degree, and the opening of second compression ring in the 3rd groove differs 180 degree with the opening of its first ring.Like this, in use, pressurized gas or work waste gas must be from the openings of another piston ring of opening in this groove of first piston ring first annular groove, and order arrives oil groove 4 again through second annular groove and the 3rd annular groove successively then.Increased greatly pressurized gas or work waste gas the gas blowby route, obviously can improve effectively sealing reliability and prevent lubricant oil on scurry.

Its another kind of design is the seam that can dock 6 that has the pairing design in the opening both sides of piston gas ring 3 and oil ring 4.Promptly under the constant prerequisite of the structure of piston ring and seal groove, the two ends of piston gas ring 3 and oil ring 4 are slightly prolonged, the two ends of piston gas ring 3 and oil ring 4 according to shown in the accompanying drawing 3, are processed step, the assembling back forms the closed seam shown in the accompanying drawing 2.During use, pressurized gas or work waste gas must just can enter into next annular groove through the matching surface of seam, have played the effect that prolongs the gas blowby route, also can reach comparatively ideal effect.Further point out, as the piston gas ring of the structure in the accompanying drawing 1 and oil ring being made the structure in the accompanying drawing 3, pairing is used, when the reliability of sealing is further enhanced, the opened gap that has changed piston ring strengthens the generation gas leak phenomenon along with the increase of the prolongation of work service time of piston and wearing and tearing, has also just reduced the loss of lubricant oil and the drawbacks of bringing thus such as incrustation of cylinder effectively.Just improve the utilization ratio of piston ring and prolonged it and the working life of machine.

Claims

1, a kind of piston ring of new structure comprises compression ring 3 and oil ring 4, it is characterized in that being equipped with in the closure gasket groove 2 of piston 1 two compression rings 3 that opening direction is opposite.

2,, it is characterized in that the opening both sides of described compression ring 3 and oil ring 4 have the step seam 6 that can dock of pairing design according to the described piston ring of claim 1.