CN2477841Y

CN2477841Y - I.C. engine piston and piston ring assembly

Info

Publication number: CN2477841Y
Application number: CN 01235036
Authority: CN
Inventors: 易琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-29
Filing date: 2001-04-29
Publication date: 2002-02-20
Anticipated expiration: 2011-04-29

Abstract

The utility model discloses a component of a piston and a piston ring for an internal combustion engine. The component is characterized in that two air ring grooves are arranged on a piston ring body, the ends of the upper part and the lower part of the opening of a piston ring are symmetrically provided with two front inner steps, the ends of the remaining parts after the front ends are removed are provided with two rear inner steps that correspond to the front inner steps, the piston ring is encased in the internal rear part of the air ring grooves, the front inner steps are overlapped to form two inner steps at the upper part and the lower part of the opening, and the inner steps are fixed by a positioning spring and a positioning pin. The utility model has good sealing performance, prevents gas and lubricating oil from leakage, and extends the service life of the air cylinder system.

Description

Internal combustion engine, piston-ring packing

The utility model relates to a kind of combustion engine component, particularly a kind of internal combustion engine, piston-ring packing.

The opening of existing piston ring all is the plane otch, along with the growth of running time, owing to steel bushing, piston, wear of piston-rings, cause the gap of steel bushing and piston increasing, gap-clearance of piston rings increases, and causes gas and lubricant oil to scurry and lets out, and reduces the working life of piston and cylinder.

The purpose of this utility model is in order to overcome above-mentioned deficiency, and provide a kind of good seal performance, the opened gap that can solve effectively because of piston ring produces the gas leakage problem, preventing that gas and lubricant oil from scurrying lets out, reduce fuel consumption, improve cylinder system internal combustion engine, the piston-ring packing in working life.

The purpose of this utility model is achieved in that internal combustion engine, piston-ring packing comprise piston, piston ring body, it is characterized in that being provided with twice compression, one oil ring groove at the endless belt position of piston body, adjacent position in upper and lower half groove of compression has radial location pin block mounting hole, position of mounting hole in the twice compression staggers mutually, has two radial location springs in each mounting hole and puts circular hole.There is the preceding interior ladder of symmetry the end of gap-clearance of piston rings place upper and lower semi-body, the ring body section of step length is removed other halfbody part respectively in port is extended down to before two, the end of halfbody part has respectively and the interior ladder in the corresponding back of preceding interior ladder in addition, and is fluted on the ring body circle edge except that open part.Successively retaining spring is put into put circular hole, location pin block and place mounting hole, piston ring to be positioned over compression after, again will be preceding in ladder corresponding overlapping, ladder is fastened in simultaneously and locatees on the pin block in forward and backward on the upper and lower semi-body.

Fig. 1 is the piston structure schematic representation;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the piston ring structure schematic representation;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is the block-shaped figure of locating stud.

Now illustrated embodiment is made detailed description to the utility model in conjunction with the accompanying drawings.

Internal combustion engine, piston-ring packing comprise piston, piston ring body, be provided with twice compression 2, one oil ring groove at the endless belt position of piston body 1, adjacent position in upper and lower half groove of compression has radial location pin block mounting hole 3, position of mounting hole in the twice compression staggers 180 ° mutually, has two radial location springs in each mounting hole and puts circular hole 4.There is the preceding interior ladder 6 of symmetry the end of piston ring 5 opening upper and lower semi-bodies, the ring body section of step length is removed other halfbody part respectively in port is extended down to before two, in addition the end of halfbody part have respectively and preceding in ladder 7 in the corresponding back of ladder, on the ring body circle edge except that open part fluted 8.Successively retaining spring is put into put circular hole 4, location pin block 9 and place mounting hole 3, piston ring 5 to be positioned over compression 2 after, again will be preceding in ladder 6 corresponding overlapping, the forward and backward interior ladder on the upper and lower semi-body is fastened in simultaneously locatees on the pin block 9.

The utility model is owing to adopt above design, after piston ring set is contained in the compression, form two interior ladders on the upper and lower semi-body of opening, fix by retaining spring, location pin block roof pressure respectively, improved sealability effectively, the opened gap that has solved because of piston ring produces the gas leakage problem, prevents from that gas and lubricant oil from scurrying to let out, reduce fuel consumption, the working life of having improved cylinder system.

Claims

1, a kind of internal combustion engine, piston-ring packing, comprise piston, the piston ring body, it is characterized in that being provided with twice compression (2) at the endless belt position of piston body (1), one oil ring groove, on compression, adjacent position in second groove has radial location pin block mounting hole (3), position of mounting hole in the twice compression staggers mutually, have two radial location springs in each mounting hole and put circular hole (4), on piston ring (5) opening, there is the preceding interior ladder (6) of symmetry the end of lower semi-body, the ring body section of step length is removed other halfbody part respectively in port is extended down to before two, the end of halfbody part has respectively and the interior ladder (7) in the corresponding back of preceding interior ladder in addition, on the ring body circle edge except that open part fluted (8), successively retaining spring is put into and put circular hole (4), location pin block (9) places mounting hole (3), after piston ring (6) is positioned in the compression (2), again that ladder (6) in preceding is corresponding overlapping, on, before on the lower semi-body, ladder is fastened on the location pin block (9) simultaneously in the back.