CN2622407Y - Two-ring lapped combining and mutual blocking type piston ring - Google Patents

Abstract

The utility model provides a piston ring for sealing between the engine and cylinder of vehicle, in particular to a piston ring with two rings of mutual stack and sealing. The technical problem to be solved is that the piston ring expands due to heating and the collar extension on the piston ring closes when the engine operates, the collar extension size increase, the flexibility reduces, the sealing becomes untight due to the unclosing of the collar extension along with the wear of the cylinder liner and the piston ring after a period of use. The utility model has the technical characterized in that the piston ring is composed of stacking of one thick piston ring and one thin piston ring and with telescoped collar extension, the thick piston ring is equipped with a locating pin, the thin piston ring is positioned on the thick piston ring, and the locating pin is positioned between the collar extensions of the thin piston ring. Due to the combined piston ring of stack of two rings and operating at the reliable condition without collar extension, the utility model obtains good sealing effect, long service life, and fuel economy and reduction on exhaust emission. The utility model is suitable for using in the vehicle engine.

Description

Two rings stack combination mutual blocking type piston ring

[technical field]

The utility model relates to a kind of piston ring that seals between piston on the motor car engine and the cylinder that is arranged on.

[background technique]

Piston ring is very crucial parts on the motor, and it is arranged between motor car engine piston and the cylinder, seals.If poorly sealed, will cause the cylinder pressure deficiency, reduce engine power, it is insufficient to burn, over-emitting black exhaust.Present piston ring has a collar extension, when engine operation, and piston ring expanded by heating, collar extension closure.But with after having spent a period of time, along with cylinder liner and wear of piston-rings, collar extension increases, and flexibility decrease, and collar extension can not be closed, poorly sealed phenomenon occurs.

[summary of the invention]

The purpose of this utility model is to provide a kind of two rings of above-mentioned deficiency of avoiding to stack combination mutual blocking type piston ring.

The purpose of this utility model is achieved in that it has a piston ring, it is characterized in that: it also has a piston ring, and these two piston rings are one thick one thin, fix a locating stud on thick piston ring, thin piston ring is placed on the thick piston ring, and locating stud places between the collar extension of thin piston ring.Because two piston rings are stifled mutually with collar extension, the whole ring that forms of two rings closes state, even collar extension can not be closed, also can realize the sealing between piston and the cylinder, locating stud plays the role of positioning, and prevents the displacement when work of two rings, string to two a collar extension correspondence improves its stifled mutually reliability.

The utility model compared with prior art, under the effect of locating stud, the multiple-piece piston-ring of two rings after stacking is to work not having very reliably under the collar extension state, can reach good sealing effect, prolonged working life, saved fuel oil, reduced toxic emission.

[description of drawings]

Further specify the utility model below in conjunction with accompanying drawing.

Accompanying drawing is a structural representation of the present utility model.

[embodiment]

Thin piston ring 1 and thick piston ring 2 stack after 180 ° of two collar extensions 1.1 and 2.1 dislocation to be used as a ring and to use.The thickness of Bao Huan is half of thick ring.On thick piston ring, fix a locating stud, 3, locating stud 3 places between the collar extension of thin piston ring 1.The structure that is installed on the piston is: first road: thin ring is last, and thick ring is following; Second road: thick ring is last, and thin ring is following.The effect of Bao Huan is a frizing, because two piston rings are stifled mutually with collar extension, even collar extension can not be closed, also can realize the sealing between piston and the cylinder.Locating stud plays the role of positioning, and prevents the displacement when work of two rings, and string improves its stifled mutually reliability to two collar extension correspondences.

Claims (2)

1, a kind of two rings stack combination mutual blocking type piston ring, it has a piston ring, it is characterized in that: it also has a piston ring, these two piston rings are one thick one thin, on thick piston ring, fix a locating stud, thin piston ring is placed on the thick piston ring, and locating stud places between the collar extension of thin piston ring.

2, stack combination mutual blocking type piston ring according to described two rings of claim 1, it is characterized in that: the structure that said piston ring is installed on the piston is: first road: thin ring is last, and thick ring is following; Second road: thick ring is last, and thin ring is down, and two piston rings stack after 180 ° of collar extension place dislocation.

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