CN201521363U

CN201521363U - Oil storing sealing gas ring of engine piston

Info

Publication number: CN201521363U
Application number: CN2009202066489U
Authority: CN
Inventors: 李荣贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-13
Filing date: 2009-10-13
Publication date: 2010-07-07
Anticipated expiration: 2019-10-13

Abstract

The utility model discloses an oil storing sealing gas ring of an engine piston, which comprises a sealing upper ring and a sealing lower ring, wherein the lower end surface of the sealing upper ring is provided with a plurality of oil storing tanks which penetrate the internal side surface and the external side surface of the sealing upper ring along the radial direction; the lower end of the external side surface of the sealing upper ring is provided with a chamfer, the angle a of which is 30 degrees to 60 degrees; the chamfer is arranged on both sides of a lapped seam of the sealing upper ring beyond 2-5mm; the value of the width b of the oil storing tanks ranges from 1 to 3mm; the ratio between the depth t of the oil storing tanks and the thickness B of the sealing upper ring ranges from 1/3 to 1/2; the upper ends of the two sides of every oil storing tank is provided with an oil tank chamfer; the number of the oil storing tanks is 6-20; the ratio between the height h of the chamfer and the thickness B of the sealing upper ring is 1/3-1/2; and the oil storing sealing gas ring is arranged in a gas ring groove of the engine cylinder piston to be used. Compared with the prior art, the oil storing sealing gas ring has the benefits of large oil storing capacity, good lubrication and sealing effects, long service life of the engine, small lubricating oil consumption and no standard exceeding hidden trouble of exhaust emission pollution of the engine.

Description

Engine piston oil storage seal gas ring

Technical field the utility model relates to engine piston ring, more specifically relates to a kind of engine piston oil storage seal gas ring.

The background technique engine piston ring is divided into compression ring and oil ring, at present, on the higher engine cylinder piston of performance requirement the biplate seal gas ring is installed all usually, i.e. two overlapping being installed in the same compression of compression ring, the overlapping the slot of two compression rings or opening interlace 180 °, avoid the gas leakage of overlapping the slot or opening.This set has been obtained certain effect for the sealing raising of having started cylinder, but for guaranteeing the intensity of seal ring, certainly will increase the thickness of seal ring, bring the area of contact of seal ring and cylinder wall to strengthen, cause the wearing and tearing aggravation of seal ring and cylinder wall, not only cause the life-span of seal ring low; After seal ring and cylinder wall gap increased, when the combustion chambers burn work done, the high-temperature gas in the firing chamber entered the cylinder block lower end, the life-span of the relevant moving element of influence; When the cylinder air inlet was compressed, lubricating oil also can enter the firing chamber from this gap, and because of machine oil can not fully burn in the firing chamber, the tail gas that causes motor to discharge exceeds standard, and causes atmospheric pollution.For overcoming above-mentioned defective, the more general practice is at seal ring end face and side annular oil groove to be set, and forms the high pressure oil film between cylinder wall and piston, reaches sealing and lubricated purpose.Chinese patent publication number CN2448934, open September 19 calendar year 2001 on date, invention and created name " a kind of automatic control piston ring device ", a kind of seal ring that is provided with annular oil groove structure in end face and side is disclosed, have enough intensity in order to ensure seal ring, be subjected to its structural limitations, this oil groove oil reserve is little, lubricated, sealing effect is not obvious, be further improved.Chinese patent publication number CN2740787, open November 16 2005 date, invention and created name " a kind of automatic control piston ring device ", disclose a kind of seal ring that is provided with annular oil groove in end face and side and improved structure, increased inlet port at end face, but the lubrication and seal effect still needs further to improve raising.

The summary of the invention the purpose of this utility model is exactly at the deficiencies in the prior art, the engine piston oil storage seal gas ring that provide that a kind of oil reserve is big, lubrication and seal is effective, long service life, motor non-exhaust emission is polluted the hidden danger that exceeds standard.

For achieving the above object, the utility model adopts following technological scheme:

A kind of engine piston oil storage seal gas ring, form by sealing to go up to encircle under ring and the sealing, the lower end surface of encircling in the described sealing is provided with several oil storage tanks, oil storage tank radially runs through inner side surface and the outer side surface that ring is gone up in sealing, the outer side surface lower end of ring is provided with chamfering in the sealing, chamfering is blocked near the overlapping the slot both sides of ring in the sealing, and chamfering is positioned at and forms the open belt conical surface outside the 2～5mm of overlapping the slot both sides, and the angle of chamfering and outer side surface is 30 °～60 °.

The overlapping the slot of seal ring both can be the joint form of straight line, also can be L shaped seam, and near the chamfering of the seal ring outer side surface 2～5mm seam both sides ends, with intensity and the sealing of guaranteeing the seal ring seam crossing.

After adopting as above technological scheme; in the sealing ring and sealing down ring with in the overlapping compression that is located at piston of thickness direction; in the process that moves up and down of piston in cylinder; lubricant oil enters the gap of encircling under the sealing between inwall and the piston seal groove sidewall from sealing down the articulating seam on the cylinder wall; simultaneously; with also be full of lubricant oil successively in the oil storage tank that encircles in the sealing that this gap is communicated with; lubricant oil is filled sealing, and upward the chamfering conical surface and the gap between the cylinder wall of ring form basic ring-type high pressure oil film of expiring the seal ring excircle; ring-type high pressure oil film shutoff firing chamber gas enters inferior part of the cylinder block and lubricating oil enters the firing chamber; friction pair between lubrication of cylinders wall and the seal gas ring; thereby realize double effects lubricated and sealing; protection motor moving element is not subjected to the combustion chamber high temperature gases affect, reduces lubricating oil consumption and the pollution from exhaust emission hidden danger that exceeds standard.Because the oil storage tank capacity is big, the lubricant oil deposit is sufficient, so high lubricating effect, the abrasion of piston ring and cylinder wall obviously slow down, thus the long service life of piston ring and cylinder, thus prolonged working life of motor; Ring-type high pressure oil film is narrowed down by wide from the bottom to top gradually, and the pressure of oil sealing oil film strengthens gradually, so good sealing effect.

Preferably, upper end, the both sides of oil storage tank is provided with the oil groove chamfering, further increases the oil pump capacity of oil groove, and does not influence the intensity of seal ring.

Further preferred, the span of the width b of oil storage tank is 1～3mm, and oil storage tank degree of depth t is 1/3～1/2 with the span that the ratio of ring thickness B is gone up in sealing; The quantity of described oil storage tank is 6～20; The structural parameter of oil groove and quantity determines according to the concrete size of seal ring, and enough intensity and lubricant oil is evenly distributed is purpose to guarantee to have, and guarantees that cylinder and seal ring lubricate and good sealing effect long service life.

Preferably, the angle a of chamfering is 45 °, and the height h of chamfering is 1/3～1/2 with the span that the ratio of ring thickness B is gone up in sealing; The size of chamfering a angle and height h determine according to the operating mode of motor, the thickness of the size decision high pressure sealing oil film of chamfering a, usually choosing 45 ° is advisable, make the sealing oil film have enough lubricants capacities and sealing load, further guarantee to prolong the working life of motor, the consumption that reduces lubricant oil and the pollution from exhaust emission hidden danger that exceeds standard.

The utility model beneficial effect compared with prior art is, oil reserve is big, lubrication and seal is effective, the motor long service life, and lubricating oil consumption is little, and the motor non-exhaust emission pollutes the hidden danger that exceeds standard.

Description of drawings Fig. 1 is the utility model structural representation;

Fig. 2 is a ring structure signal axonometric drawing in the sealing of the present utility model;

Fig. 3 is a ring structure schematic front view in the sealing of the present utility model;

Fig. 4 is a ring structure diagrammatic top view in the sealing of the present utility model.

Embodiment is further described the utility model below in conjunction with accompanying drawing, but therefore the utility model is not limited among the embodiment of the following stated:

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of engine piston oil storage seal gas ring, encircling 3 down by ring 1 in the sealing that is the overlapping the slot of L type and sealing forms, the lower end surface of ring 1 is provided with 15 oil storage tanks 2 in the described sealing, the upper end, both sides of oil storage tank 2 is provided with oil groove chamfering 21, oil storage tank 2 radially runs through inner side surface 11 and the outer side surface 12 that ring 1 is gone up in sealing, outer side surface 12 lower ends of ring 1 are provided with chamfering 13 in the sealing, chamfering 13 is blocked near overlapping the slot 14 both sides of ring 1 in the sealing, chamfering 13 is positioned at and forms open circular cone outside the 2～5mm of overlapping the slot 14 both sides, and chamfering 13 is 45 ° with the angle of outer side surface 12.The height h of described chamfering 13 is 1/3～1/2 with the span that the ratio of ring 1 thickness B is gone up in sealing.The width b of described oil storage tank 2 is 2mm; Described oil storage tank 2 degree of depth t are 1/3～1/2 with the ratio that ring 1 thickness B is gone up in sealing.Engine piston oil storage seal gas ring of the present utility model is installed in the compression of engine cylinder piston 4.

Though more than combine accompanying drawing and described mode of execution of the present utility model, those of ordinary skill in the art can make various distortion or modification within the scope of the appended claims.

Claims

1. engine piston oil storage seal gas ring, going up ring (1) and sealing by sealing encircles (3) down and forms, it is characterized in that: the lower end surface of ring (1) is provided with several oil storage tanks (2) in the described sealing, oil storage tank (2) radially runs through inner side surface (11) and the outer side surface (12) that ring (1) is gone up in sealing, outer side surface (12) lower end of ring (1) is provided with chamfering (13) in the sealing, chamfering (13) is blocked near overlapping the slot (14) both sides of ring (1) in the sealing, chamfering (13) is positioned at and forms open circular cone outside overlapping the slot (14) both sides 2～5mm, and chamfering (13) is 30 °～60 ° with the angle of outer side surface (12).

2. engine piston oil storage seal gas ring according to claim 1 is characterized in that: the upper end, both sides of described oil storage tank (2) is provided with oil groove chamfering (21).

3. engine piston oil storage seal gas ring according to claim 1 is characterized in that: the span of the width b of described oil storage tank (2) is 1～3mm, and oil storage tank (2) degree of depth t is 1/3～1/2 with the span that the ratio of ring (1) thickness B is gone up in sealing; The quantity of described oil storage tank (2) is 6～20.

4. engine piston oil storage seal gas ring according to claim 1 is characterized in that: the angle a of described chamfering (13) is 45 °, and the height h of chamfering (13) is 1/3～1/2 with the span that the ratio of ring (1) thickness B is gone up in sealing.