CN201818383U

CN201818383U - Piston ring

Info

Publication number: CN201818383U
Application number: CN2010205182164U
Authority: CN
Inventors: 李霄伟; 李霄瀚; 李少敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-02
Filing date: 2010-09-02
Publication date: 2011-05-04
Anticipated expiration: 2020-09-02

Abstract

The utility model discloses a piston ring which comprises a piston body (1) and a clearance (2), wherein two sides of the clearance (2) are respectively provided with a first end part (A) and a second end part (B) of the piston body (1); a sealing notch (3) is arranged at the outer upper end of the first end part (A); and a sealing flange (4) corresponding to the sealing notch (3) is arranged at the outer upper end of the second end part (B). When the piston ring is arranged in a piston groove (11) on the outer wall of a piston (10), the sealing notch (3) is matched with the sealing flange (4) to seal gas in a cylinder. The effect of the piston ring for sealing gas in a combustion engine cylinder is improved, and simultaneously the piston ring can not be stuck due to expansion under high temperature.

Description

Piston ring

Technical field

The utility model relates to a kind of piston ring, particularly is installed on the piston ring in the cylinder of internal combustion engine piston.

Background technique

For a long time, the research emphasis of internal-combustion engine is how to improve its working efficiency, reduces fuel consumption, prolongs its working life.Piston ring is to keep the bubble-tight strength member of cylinder of internal combustion engine, for keeping effective pressure and fuel oil heat energy utilization rate aspect in the cylinder to play a key effect.Piston ring need and be avoided metal heated expansion based on installing, and causes the increase of piston ring external diameter and may cause the former of stuck two aspects of piston ring thereby be designed to have fully that the structure and the opening of the opened gap of disconnection are these two kinds of forms of semi-closed structure that convex-concave ladder mouth formula overlaps mutually.

When piston ring is installed in the piston groove on the piston, still leave intercommunication opened gap passage up and down on the piston ring, or through transverse opening gap, piston ring top-piston ring dorsal part gap-piston ring below transverse opening clearance channel.When internal combustion engine, the gas in the cylinder can leak downwards by the opened gap of piston ring, and simultaneously, the gas that enters opened gap can also leak downwards through the dorsal part gap of piston ring and the side clearance of below.In compression stroke, gas in the cylinder can also enter the dorsal part gap by the piston ring side clearance of top, leak downwards the side clearance that enters piston ring gap and below again, make the gas in the part cylinder in compression stroke and power stroke, leak like this, thereby reduced fuel oil heat energy utilization rate and combustion engine powered.Along with the prolongation of internal combustion engine time, the otch of piston ring can be along with the wearing and tearing of piston ring external diameter and cylinder inner wall progressively increases, and makes the gas leak in more cylinders and causes the further reduction and the combustion engine powered obvious decline of fuel oil heat energy utilization rate.

The model utility content

The purpose of this utility model is to provide a kind of end improved piston ring, improving the ability of gas in its sealing cylinder, thereby improves the heat energy utilization rate of internal-combustion engine and the working life of internal-combustion engine.

Piston ring of the present utility model, comprise cock body and gap, the both sides in gap are respectively the first end and the second end of cock body, outer upper end at first end has a seal recess, be provided with in the outer upper end of the second end one with the corresponding sealing flange of seal recess, when piston ring was installed in the piston groove on the piston outer wall, seal recess and sealing flange mated mutually, with the gas in the sealing cylinder.

Piston ring of the present utility model, wherein be provided with the push stopping part that an arc stretches out the seal recess front end in the inner of first end, have one in the inner of second outer end and end recess with the corresponding card of push stopping part, when piston ring was installed in the piston groove on the piston outer wall, push stopping part was ended recess with card and is mated mutually.

Piston ring of the present utility model, wherein when this piston ring is installed in the piston groove on the piston outer wall, push stopping part and card only leave first gap between the recess, leave second gap below seal recess and the sealing flange, leave third space between seal recess and the sealing flange, wherein first gap, second gap and third space are blind cavity configuration.

Piston ring of the present utility model, wherein the thickness of sealing flange accounts for 1/2nd of piston ring thickness.

Piston ring of the present utility model, improved the effect of its sealing gas in cylinder of internal combustion engine, reduce fuel consumption, improve the output power of motor, simultaneously piston ring can Yin Gaowen expand and stuck yet, and can compensate the increase of the piston ring gap that cylinder wall that long-term use motor causes and piston ring scuffing increase cause by automatic extension, to keep the long-term stability of engine fuel consumption and power.

Description of drawings

Fig. 1 is the schematic representation of the utility model piston ring.

Fig. 2 is the plan view of the working state of piston ring of the present utility model in being installed on piston ring the time.

Fig. 3 is the vertical view cutaway drawing of piston ring of the present utility model behind the cylinder of packing into.

Embodiment

The utility model is described in more detail below in conjunction with accompanying drawing.

Fig. 1 is the schematic representation of the utility model piston ring, as shown in Figure 1, piston ring of the present utility model comprises cock body 1 and gap 2, the both sides in gap 2 are respectively the first end A and the second end B of cock body 1, have a seal recess 3 in the outer upper end of first end A, be provided with in the outer upper end of the second end B one with described seal recess 3 corresponding sealing flanges 4, the thickness of sealing flange 4 accounts for 1/2nd of described piston ring thickness.When piston ring was installed in the cylinder 12 in the piston groove 11 on piston 10 outer walls, shown in Fig. 2 and 3, seal recess 3 mate mutually with sealing flange 4, to seal the gas in the cylinder.Because seal recess 3 and sealing flange 4 be axially, radially, and circumferencial direction all has sealing surface, so the effect of sealing gas is better with respect to piston ring of the prior art.

Be provided with the push stopping part 5 that an arc stretches out seal recess 3 front ends in the inner of first end A, have one in the inner of the second outer end B and end recess 6 with push stopping part 5 corresponding cards, when piston ring was installed in the piston groove on the piston outer wall, push stopping part 5 was ended recess 6 with card and is mated mutually.And when piston ring is in the working state that is installed in the piston ring, as shown in Figure 2, push stopping part 5 and card only leave first gap 9 between the recess 6, seal recess 3 leaves second gap 8 below sealing flange 4, leave gap the 37 between seal recess 3 and the sealing flange 4, stuck to prevent piston ring because of expanded by heating.Wherein said first gap 9, second gap 8 and third space 7 are blind cavity configuration.

Piston ring of the present utility model, improved the effect of its sealing gas in cylinder of internal combustion engine, reduced fuel consumption, improve the output power of motor, simultaneously piston ring can Yin Gaowen expand and stuck yet, and can compensate the increase of the piston ring gap that cylinder wall that long-term use motor causes and piston ring scuffing increase cause by automatic extension, to keep the long-term stability of engine fuel consumption and power.

Claims

1. piston ring, comprise cock body (1) and gap (2), the both sides in described gap (2) are respectively the first end (A) and the second end (B) of described cock body (1), it is characterized in that, have a seal recess (3) in the outer upper end of described first end (A), be provided with in the outer upper end of described the second end (B) one with the corresponding sealing flange of described seal recess (3) (4), when described piston ring is installed in the piston groove (11) on piston (10) outer wall, described seal recess (3) is mated mutually with sealing flange (4), with the gas in the sealing cylinder.

2. piston ring according to claim 1, it is characterized in that, be provided with the push stopping part (5) that an arc stretches out described seal recess (3) front end in the inner of described first end (A), have one in the inner of described second outer end (B) and end recess (6) with the corresponding card of described push stopping part (5), when described piston ring was installed in the piston groove (11) on piston (10) outer wall, described push stopping part (5) was ended recess (6) coupling mutually with card.

3. piston ring according to claim 2, it is characterized in that, when this piston ring is installed in the piston groove (11) on piston (10) outer wall, described push stopping part (5) and described card end and leave first gap (9) between the recess (6), described seal recess (3) leaves second gap (8) below described sealing flange (4), leave third space (7) between described seal recess (3) and the described sealing flange (4), wherein said first gap (9), second gap (8) and third space (7) are blind cavity configuration.

4. according to any one described piston ring among the claim 1-3, it is characterized in that the thickness of described sealing flange (4) accounts for 1/2nd of described piston ring thickness.