CN2514130Y

CN2514130Y - Sealed piston ring for IC engine

Info

Publication number: CN2514130Y
Application number: CN 01230249
Authority: CN
Inventors: 林桂开; 吴柏洪; 陈仰健; 邱复兴; 柯开波
Original assignee: FUJIAN DONGYA MACHINERY Co Ltd
Current assignee: FUJIAN DONGYA MACHINERY Co Ltd
Priority date: 2001-07-12
Filing date: 2001-07-12
Publication date: 2002-10-02
Anticipated expiration: 2011-07-12

Abstract

The utility model discloses a seal type piston ring used on an internal-combustion engine. The seal type piston ring and a sealing retaining sheet are installed in the ring groove of a piston, and the sealing retaining sheet is positioned on the sealing ring overlap gap, the fuel gas leaked from the clearance of the sealing ring overlap gap is blocked by the sealing retaining sheet, and therefore the leakage of fuel gas is reduced to a minimum level. The utility model has a self-adjusting clearance, a radial and axial sealing function and the advantages of simple structure, convenient fabrication, long service life and good sealing performance.

Description

The sealing type piston ring that a kind of internal-combustion engine is used

Affiliated technical field

The utility model relates to the improvement of the piston ring that a kind of internal-combustion engine uses, it can with the supporting use of internal-combustion engine.

Background technique

As everyone knows, the piston ring that existing internal-combustion engine uses is because the existence of its opened gap, caused the gas leakage phenomenon to produce, and in use, the circumferential surface of piston ring constantly is worn, make opened gap little by little increase, the leakage rate of combustion gas is being followed and is being increased, make the oil ageing in the crankcase, rotten, cylinder pressure descends, and starts difficulty, fuel consumption is big, incomplete combustion, constantly the someone proposes the improvement project of correlation technique for this reason, for example Chinese patent CN99102121 number about mentioning in " the seamless piston ring of tension force is arranged " that a kind of centre at the two ends of gap-clearance of piston rings arm respectively opens a penetrating bar shaped perforate, studs with a connection piece in the perforate, and link is connected into the piston ring of opening on the cylindrical body of a closure, because the effect of link, make the work of piston ring be in seamless state all the time, do not oil so it has, not gas blowby, the advantage that power performance does not descend, but that its sealability awaits is further perfect.

Summary of the invention

The sealing type piston ring that provides a kind of internal-combustion engine to use is provided the purpose of this utility model, and it has excellent sealing performance, can prevent the leakage of combustion gas effectively, and it is simple in structure, and is easily manufactured, long service life, and sealability significantly improves.

Task of the present utility model is to finish in such a way, the sealing type piston ring that this internal-combustion engine is used respectively has a table top on the both sides of opening, one of them is a upper table surface, another is a following table, their thickness has only half of piston ring thickness, last, respectively there is a slotted eye centre of following table, when two table tops are superimposed together, between the gap, form one and take mouth, a sealing catch is inserted in and takes between mouthful slotted eye, the combustion gas of leaking out from piston ring gap will be taken mouth and be sealed catch and be blocked like this, make the leakage rate of combustion gas reduce to minimum degree, and this piston ring structure has axially and the radial seal function.

Description of drawings

Below in conjunction with accompanying drawing to the utility model cooperation further instruction.

Fig. 1 is that the internal-combustion engine of the utility model number is with sealing type piston ring front view (also being that A is to view).

Fig. 2 is an internal-combustion engine of the present utility model sealing type piston ring opening enlarged view.

Fig. 3 is that internal-combustion engine of the present utility model uses sealing type piston ring B to view.

Among the figure 1, ring body, 2, the gap, 3, table top, 4, table top, 5, take a mouthful surface of contact, 6, take a mouthful slotted eye, 7, the sealing catch.

Embodiment

As we know from the figure, the sealing type piston ring that this internal-combustion engine is used is made of ring body (1), on ring body (1) arm on both sides, opening gap (2), a table top (3) and (4) are arranged respectively, one of them table top (3) is a upper table surface, table top (4) is a following table, their thickness has only half of ring body (1) thickness, such two table tops (3) and (4) are superimposed together and just produce one and take a mouthful surface of contact (5), respectively there is one to take a mouthful slotted eye (6) in the centre of table top (3) and (4), in taking a mouthful slotted eye (6), can inject catch sealing together (7), sealing catch (7) is made with steel disc, exists in the both sides of taking a mouthful surface of contact (5) also gapped (2).When this piston ring is installed on the piston, because table top (3) and (4) are built up one and take mouth, and sealing catch (7) also is in and takes on mouthful position, the combustion gas that leaks out from opened gap (2) is taken mouth and is touched face (5) and seal catch (7) and axially and radially stopping, thereby the leakage rate of combustion gas is significantly reduced, also overcome all adverse consequencess that produce because of gas leakage.The sealed type piston that this internal-combustion engine is used is structurally also deposited characteristics, after piston ring body (1) cylindrical is worn, this ring body (1) is under the effect of its elastic force, the form that can keep taking a mouthful surface of contact (5) at opening is constant, it has automatic adjusting, eliminates the function in gap, so this piston ring has from adjust the play, radially, the dual functions of axial seal.

Claims

1, the sealing type piston ring used of a kind of internal-combustion engine, a table top is respectively arranged on the ring body arm on both sides, gap, it is characterized in that: the thickness of these two table tops has only half of ring body thickness, they are superimposed with each other and take a mouthful surface of contact one of formation, respectively there is one to take a mouthful slotted eye in the centre of these two table tops, can inject catch sealing together in taking mouthful slotted eye, the sealing catch is made the also gapped existence in the both sides of taking mouthful surface of contact with steel disc.