CN202468050U - Totally-closed piston/airtightness piston ring component - Google Patents
Totally-closed piston/airtightness piston ring component Download PDFInfo
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- CN202468050U CN202468050U CN2012200834480U CN201220083448U CN202468050U CN 202468050 U CN202468050 U CN 202468050U CN 2012200834480 U CN2012200834480 U CN 2012200834480U CN 201220083448 U CN201220083448 U CN 201220083448U CN 202468050 U CN202468050 U CN 202468050U
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Abstract
The utility model provides a totally-closed piston/airtightness piston ring component, which includes a spring ring, an oil seal ring and a gas seal ring all placed in a gaseous ring slot from the inside out sequentially, as well as two layers of double gaseous rings superimposed on the outer layer, wherein a gas seal ring interface is a radial rectangular smooth interface; the double gaseous rings are compressing notch rings, and adopt axial rectangular smooth interfaces; and an oil seal ring interface is a rectangular socket interface. The interfaces of three types are endowed with the functions of sealing the self ring extensions as well as the functions of mutually sealing the ring extensions, so that the compression pressure is kept high, the power is strong, and no carbon deposition exists in the cylinder, therefore, the totally-closed piston/airtightness piston ring component provided by the utility model can guarantee that the air cylinder leak tightness of the engine is kept to be in the optimal seal state, and greatly improves the dynamic property of the engine and prolongs the service life of the engine; the reliability is strong as the technical innovation is obtained through experiments, and the totally-closed piston/airtightness piston ring component can be applied in the filed of ignition plug engines, such as automobile engines, airplane engines, warship and ship internal combustion engines, and has the advantages of never needing major overhaul, saving labor, time and money, and the like.
Description
Technical field
The present invention relates to be primarily aimed at motor car engine, airplane engine, the architecture advances in the piston-cylinders such as warship, ship, internal-combustion engine more particularly, relates to the improvement of piston, piston ring packing cooperating structure.
Background technique
Along with China's rapid economic development, since nearly 120 years, had since the motor car engine, piston ring and existing technology exist piston ring close not tight; The exhaust of leaking down, compression ratio is low, excessive oil consumption, carbon-deposits the cylinder is too much; It is insufficient to burn, and is short of power, and engine temperature is overheated, increases the piston surface friction drag that back and forth does work; New engine has following exhaust, under the old motor exhaust just more, contaminated air is comparatively serious; Physical environment receives very big influence, restricts one of key factor of China's economic development to a certain extent, does not just emit in the air with cigarette because the half the many oil plants of motor obtain fine burning.
At engine piston, piston ring up and down reciprocatingly acutely does work down, especially in the engine operation later stage, since piston ring, two sidewalls of piston groove.The cylinder inner wall wearing and tearing, sideshake and backlash space strengthen, and gas leakage pump oil phenomenon is more serious, and it is low to cause that compression ratio takes place; Carbon distribution is too much, excessive oil consumption, and it is insufficient to burn, and is short of power; Shortcomings such as pollution from exhaust emission is big at present, have much in order to improve the cylinder piston sealing technique, are CN1274054A like publication number; The disclosed sealing technique of the Chinese patent of CN2144734Y, this sealing technique all solve bright mouthful of outseam problem of ring, do not seal self piston at all and answer back and interior collar extension.So do not cut off sideshake and back clearance passage between piston collar extension and the piston ring groove.
Publication number be the Chinese patent of CN1374445A disclose also that a kind of fluorine ether material does not with the closed loop of opening, the material of use is exactly (plastics and a rubber composition).This material and high-pressure cooker sealing ring/sealing gasket are similar, and owing to motor car engine, airplane engine, temperature and pressure is all very big in the cylinders such as warship, ship, internal-combustion engine; With its open structure and material; Not carbonization how long all, and then do not reach sealing effect, influence is actual to be used.Therefore, the sealing technique of above-mentioned technology is not applied and promotes.
The applicant discloses the cooperating structure of a kind of tightness piston, piston-ring packing in the Chinese patent " air tight piston ring " (patent No. 201110004907.1, publication number CN102072042A) of application on January 12nd, 2011.Problem is how further to guarantee the tightness of structure, and be to need one of problem that solves the working life that prolongs piston.
To sum up, how to guarantee piston, the seal of air tight piston ring assembly, be one of existing technology problem demanding prompt solution the working life of improving assembly.
Summary of the invention
The purpose of this invention is to provide a kind of completely closed piston, air tight piston ring assembly; Technical problem to be solved is to make this piston, air tight piston ring assembly can cut off sideshake and the passage of back clearance between piston collar extension and the piston groove; Solve ring interface closed pattern and problems such as metal treatment and ring wearing and tearing; And can cut off the down drawback of exhaust gas leakage and pump oil defective, and guarantee that motor is pressed not leak in operation later stage cylinder, make compression pressure maintenance high pressure conditions.This efficient sealing technique can be used on the military long-range pressed engine, and wear resistance is extremely strong, thereby significantly improves the power character of motor and the safety reliability of motor.The present invention can be used on all piston engine fields, like motor car engine, and airplane engine, aspects such as warship, ship, internal-combustion engine have not overhaul forever, saving of labor, save time, save money, advantages such as tightness is excellent, long service life.
In order to achieve the above object, the present invention provides a kind of completely closed piston, air tight piston ring assembly, comprises the spring shackle, close oil ring, the close compression ring that place successively from inside to outside in the compression, and two compression rings of outer ring two laminated.Wherein, the docking port of said close oil ring comprises the female mouth of socket joint of public mouthful of a side socket joint and opposite side; Said socket joint upwards is divided into both sides and middle three parts for public mouthful in the footpath of said close oil ring; Said intermediate portion is the curve bath that cambered surface is parallel to said close oil ring axis; Said two side portions is the arc pin that front end forms the downside boss, and the rearward end of said two side portions is to be connected in the both sides cell body wall that said close oil ring ring body forms said curve bath.Female mouthful of said socket joint be also corresponding three parts that are divided into two outsides and internal layer upwards in the footpath of said close oil ring; Wherein, layer segment comprises cooperate the to peg graft arc protruding end, middle part of said curve bath of front end, and the be connected interior recess of said arc pin of rear end in said; Said external lateral portion is for constituting said interior recess; Be connected in the arc protrusion place of said close oil ring ring body.In addition, the docking port of said close compression ring is the structure of axial upper and lower arc boss butt joint; The interface of said upper and lower arc boss is the arc shaped surface that is parallel to said close compression ring upper and lower end face, and said interface is positioned at the docking port place and states the axial middle part of close compression ring.Said pair of compression ring docking port separately is the structure of radially inside and outside arc salient angle butt joint; The interface of said inside and outside arc salient angle is positioned at the radially middle part of ring width of said pair of compression ring, and the interface of said inside and outside arc salient angle 11 is the cambered surface that is parallel to said pair of compression ring axis.
The present invention is through close oil ring, close compression ring, and the structural design of two compression ring docking ports, has greatly improved tightness, thereby has made integrally-built longer service life.
Under the optimal way, in said compression, stagger 180 ° of angles of said pair of compression ring 1 docking port separately are provided with.The position that the interface of said close compression ring is positioned at the staggered 90 ° of angles of two said pair compression ring 1 docking port is provided with.And the staggered 180 ° of angles of the interface of said close oil ring and said close compression ring docking port are provided with.
In addition, said close compression ring, close oil ring, used material is a spring steel, code name 60S:2Mn.Thereby make the heat-resisting quantity of structure strengthen, also can use under the environment far above 316 ℃.Spring shackle of the present invention is selected the 65Mn steel that elasticity is high, wear resistance is strong, antifatigue is good for use, uses normalized treatment.
In addition, the structure of said spring shackle is: small semicircle is formed the spring shackle of 13 some one; Perhaps be: positive and negative both direction, the spring shackle that spring sheet is formed.
Under the optimum way, the arc length of said pair of compression ring docking port cambered surface is 6mm.The arc length of said close compression ring docking port cambered surface is 6mm.The curve bath arc length of said close oil ring is 10mm; The arc length at said arc pin and said arc protrusion place is 4mm.The merging precision of all interfaces or socket joint face is precision-fit.
The present invention is equipped with two compression rings in the piston gas ring groove, two compression rings (two compression ring) stagger 180 °.In addition, the interface position of two compression rings is not located on wrist pin and the Vertical direction thereof.Correspondence is respectively arranged with counterbore on the interface of two compression rings, in two said counterbores fixing pin is set.Thereby the relative position of two compression rings is fixed, and the situation that interface is positioned at the same side can not take place, and remains two interface weeks upwards to differ 180 °.The radially inner side end face of two compression rings is equipped with close compression ring; 90 ° of installations are parallel to two sidewalls between Mi Qihuankou and two the compression ring counterparts; Close compression ring radial outside end face has smart cooperating structure with two compression ring radially inner side end faces; Close compression ring radially inner side end face is equipped with close oil ring, parallel two sidewalls, and close oil ring radial outside end face and close compression ring radially inner side end face have smart cooperating structure; When close oil ring is installed; Close oil ring interface and close compression ring radially inner side end face inner joint stagger 180 ° and install, and close oil ring radially inner side end face has spring force to exert pressure and makes close oil ring contact the structure that closely cooperates more with cylinder inner wall with the two compression rings of close compression ring and piston to mounting spring ring between the piston groove bottom surface.
Two compression rings described in the technique scheme are crush-cutting chomas, and its opening form is the level and smooth interface of axial rectangle, and the interface of this form is it axially is seam; The footpath is docking port to the left and right; Jointing remains zero clearance level and smooth expansion and contraction under compaction, guarantees that directly inwardly collar extension does not have bright mouthful, does not have outseam; Self seal self compression ring mouth, two compression ring mouths stagger 180 ° to be assemblied in and can seal the bright gas of axial compression ring in the groove again and pass through.
Described its opening form of close compression ring is that radially the interface of this form of the level and smooth interface of rectangle is it radially is seam, and axially docking port can axially be gone up the lower air ring mouth by the closed double compression ring up and down.Even two compression ring radial outer end surface wears are heavier, two compression ring mouths can increase, and Mi Qihuankou also can increase to the radial outer end face; But the level and smooth jointing of rectangle still is in the zero clearance state, and no matter level and smooth expansion of ring body still shunk, and bright mouthful, outseam can not appear in jointing all the time; Axially straight-through up and down bright mouth, outseam; This radially is that seam is axially gone up lower interface because of close compression ring jointing, and jointing is smart cooperating structure, can be to axially ventilation down.But radially the level and smooth jointing of rectangle is divided into lower left corner smaller part breach and upper right corner smaller part breach, through can in radial groove, ventilating between sideshake, all seals but by close compression ring radially inner side end face close oil ring is housed.
Said its opening form of close oil ring is the rectangle bell and spigot joint, and the interface of this form has the function of the own collar extension of oneself envelope, because of close oil ring expand with shrink radially with axially, do not have bright mouthful, outseam all the time.Therefore, the closed pattern of two compression ring collar extensions and the closed pattern of Mi Qihuankou, and three multi-form sealing techniques composition completely closed pistons of the closed pattern of Mi Youhuankou, thus solved piston collar extension and cylinder existence exhaust leakage down, and the pump wet goods solves.
Its form of described spring shackle is that small semicircle is formed 13 some unitary spring rings.The spring shackle that also available positive and negative both direction spring sheet is formed, along with the piston size, spring shackle elastic force point increases or reduces.Mouthful 180 ° of installations of staggering of the said pair of compression ring, two compression ring counterparts, the centre is 90 ° of 1 points, two compression ring radial inner end faces, the dowel immovable point is equipped with at inboard 1/3rd places, and its purpose is fixing to can be from mouth to two compression ring mouths of direction.
Close compression ring according to the invention, the used material of close oil ring are spring steel, code name 60S:2Mn.It is thinner to obtain metal grain through certain high temperature normalizing processing, gains in strength and high-temperature metal stability, reduces internal stress.Expansion coefficient is the same with the cylinder groove expansion coefficient, does not have axially the generation of the bloated dead phenomenon of ring up and down, because piston has impact; But close compression ring; Close oil ring is to install in the zero clearance not have wear phenomenon, so, assemble close compression ring with smart fitting method; Between its compression top and bottom sidewall that matches of close oil ring, can better seal and reach passage between back clearance up and down between sideshake.Close oil ring and close compression ring and piston ring (two compression ring) and the cylinder inner wall structure that closely cooperates more because spring shackle elastic force is exerted pressure.Even two compression ring radial outer end surface wears more can not produce gas leakage, pump oil phenomenon more yet,, the function of mutual sealing collar extension is arranged also because the interface of three kinds of forms all has the function of self sealing own collar extension; So compression pressure keeps high pressure conditions, power is strong, carbon distribution not in the cylinder; Therefore; Spark plug dateline burning color is white, and the lambda sensor head also is white, and tail gas does not have smell of petrol.Completely closed piston of the present invention, air tight piston ring assembly, and can guarantee that the cylinder sealing is in best closed state all the time, thus significantly improving engine power performance and prolongation in working life, tens times of piston ring scuffings also need not overhaul.
Description of drawings
Fig. 1 is the structural representation that piston of the present invention, piston-ring packing are set in the cylinder;
Fig. 2 is the stereochemical structure enlarged diagram of piece number 2 close compression rings among Fig. 1;
Fig. 3 is the decomposition texture schematic representation at close compression ring docking port shown in Figure 2 place;
Fig. 4 is the stereochemical structure enlarged diagram of 1 pair of compression ring of piece number among Fig. 1;
Fig. 5 is the decomposition texture schematic representation at two compression ring docking port places among Fig. 4;
Fig. 6 is the perspective view of piece number 3 close oil rings among Fig. 1;
Fig. 7 is the decomposition texture schematic representation at close oil ring docking port place among Fig. 6;
Fig. 8 is the end-face structure schematic representation of piece number 4 spring shackles among Fig. 1.
Embodiment
Completely closed piston of the present invention as shown in Figure 1, air tight piston ring assembly comprise the spring shackle 4, close oil ring 3, the close compression ring 2 that place successively from inside to outside in the compression, and two compression rings 1 of outer ring two laminated.The 180 ° of settings that interlace of two branch ostium of two compression rings.The radially inner side end face of two compression rings is equipped with close compression ring, is 90 ° of installations between close compression ring interface and two the compression ring mismatch, is parallel to two sidewalls of compression.Close compression ring radially inner side end face is equipped with close oil ring and is parallel to two sidewalls of compression.Close oil ring interface and close compression ring radially inner side end face, inner joint interlaces 180 °.Close oil ring radially inner side end face is equipped with spring shackle between the piston groove bottom surface, spring shackle elastic force applies pressure to close oil ring and close compression ring and contacts the structure that closely cooperates more with cylinder inner wall with two compression rings.
Close compression ring 2 shown in Fig. 2-3, interface shape is the level and smooth interface of rectangle radially.The docking port of close compression ring 2 is the structure of axial upper and lower arc boss 10 butt joints; The interface of upper and lower arc boss 10 is the arc shaped surface that is parallel to close compression ring 2 upper and lower end faces, and interface is positioned at the axial middle part of the close compression ring in docking port place 2.
Two compression rings are crush-cutting chomas shown in Fig. 4-5, and interface shape is the level and smooth interface of axial rectangle.Two compression rings 1 docking port separately is the structure of radially inside and outside arc salient angle 11 butt joints; The interface of inside and outside arc salient angle 11 is positioned at the radially middle part of ring width of two compression rings 1, and the interface of inside and outside arc salient angle 11 is the cambered surface that is parallel to two compression ring 1 axis.
Close oil ring shown in Fig. 6-7, interface shape are the rectangle bell and spigot joint.Specifically, the docking port of close oil ring 3 comprises the female mouth of socket joint of public mouthful of a side socket joint and opposite side.Socket joint upwards is divided into both sides and middle three parts for public mouthful in the footpath of said close oil ring 3.Intermediate portion is the curve bath 5 that cambered surface is parallel to said close oil ring 3 axis; Two side portions is the arc pin 6 that front end forms the downside boss, and the rearward end of two side portions is to be connected in the both sides cell body wall that said close oil ring 3 ring bodies form said curve bath 5.
Accordingly, female mouthful of socket joint in the footpath of close oil ring 3 also corresponding three parts that are divided into two outsides and internal layer upwards.Wherein, interior layer segment comprises that front end cooperates the arc protruding end, middle part 7 of grafting curve bath 5, and the be connected interior recess 8 of arc pin 6 of rear end; External lateral portion is for constituting the arc protrusion place 9 that said interior recess 8 is connected in close oil ring 3 ring bodies.
Ring installation (two compression ring) in the piston gas ring groove of the present invention, opening form is the level and smooth interface of axial rectangle, the lateral expansion of ring and contraction compression ring mouth itself have the function of automatic sealing collar extension.The interface of the two compression rings 1 of cause does not radially have bright mouthful, can in radial groove, not ventilate through self compression ring mouth, but two compression ring 1 radial outer end face respectively has axial Xiao Ming's breach, is staggered 180 ° by two compression rings 1 sealing is installed.Axially Xiao Ming's mouth of two up and down compression rings 1 can not leak gas to axial below.Here, axially the level and smooth interface of rectangle is meant: two compression rings have the Xiao Ming's breach and the radially inner side end face right side that Xiao Ming's breach is arranged in the radial outside end face left side in ring interface place about in the of 1, under the optimal way, are provided with the long arcuate segment of horizontal 6mm between two Xiao Ming's mouths.Two compression ring 1 radial outer end faces and radial inner end face 1/2nd jack shafts are to being the smart seam that cooperates, and the footpath is docking port to the left and right, and jointing has smart cooperating structure.Expand and contraction in level and smooth under compaction in the zero clearance.
Close compression ring jointing is divided into lower left corner smaller part breach and upper right corner smaller part breach, 1/2nd in the middle of two smaller part breach upper-end surfaces and the lower end surface, and under the optimal way, laterally arc length is 6mm.Radially be the smart seam that cooperates, axially be about mating interface.
In addition, 3 mouthfuls of close oil rings and 2 mouthfuls of 180 ° of installations of staggering of close compression ring are parallel to two sidewalls of compression, have the smart cooperating structure that matches between close compression ring 2 radially inner side end faces and the close oil ring 3 radial outside end faces.Close oil ring 3 opening forms are the rectangle bell and spigot joint./ 2nd places laterally are provided with the long half vane up and down of 10mm in the middle of close oil ring 3 upper-end surfaces, interface place and the lower end surface, and wherein the long half vane of 4mm is in the laterally inserted left groove, and long * 1.5 half vanes of also surplus 6mm are to insert in the horizontal one low groove.Said interface place groove is an one, and blade is an one, and blade is protruding in the centre; / 2nd places between transverse splicing Kou Chu upper-end surface and the lower end surface; Laterally establish 6mm length, the smart cooperating structure in middle interface interface zero clearance expands in level and smooth and contraction; Guarantee that close oil ring 3 inserts jointing, radial inner end face and radial outer end face do not have outseam, Ming Kou.Close oil ring 3 interfaces and close compression ring 2 radially inner joint stagger 180 ° and install, and laterally socket is installed in its groove when mounted.
As shown in Figure 8, it is 13 some unitary spring rings that spring shackle 4 is formed for small semicircle; The spring shackle that also can use positive and negative both direction spring sheet to form is along with the elastic force point increase of piston size spring shackle or reduce.
In addition, stagger the each other mouthful 180 ° of installations of the interface of two compression rings 1 are 90 ° of points in the middle of two compression ring counterparts; Two compression ring 1 radial inner end faces; Be equipped with and secretly partly sell immovable point, its technical characteristics: be fixing to can be from mouth to two compression ring mouths of direction at inboard 1/3rd places.It is that to use the pin that excessively cooperates to compress into half dark hole internal fixation pin be compression ring on the ∮ 0.7mm pair of compression rings that two compression rings are established down dark half hole in the ring, and dark half hole is ∮ 0.8mm.Go up compression ring and lower air ring like this and can both move radially and laterally move, never from mouth.If will leak gas from mouth, motor will quit work or beat missing of ignition.
The present invention is used for motor car engine, and cylinder diameter is ∮ 76mm.The high 3mm of groove radially arrives bottom land degree of depth 4.7mm.Under the experimental state, only establish a compression (the second groove group is not installed), and spring shackle, close oil ring, close compression ring, two compression ring are set.New engine certain mileage that goes, the general wearing and tearing of the compression ring collar extension of existing technology reach the 15-17 micron just must overhaul, and the two compression ring mouths of the present invention grind off 100 microns, still need not overhaul, be existing technology 4-5 doubly.Through more than 30,000 kilometer of experiment, it is still preferable to burn.Compression ratio, also higher than new engine compression ratio, not carbon distribution, the acting surface friction drag little, engine temperature is low.Bleed off machine oil and make an experiment 109 kilometers, 80 kilometers of speed per hours, experimental result: scuffing of cylinder bore not, the cylinder that do not rise, temperature is higher, and this is very normal, because there is not machine oil.Through experiment, beneficial effect is mainly derived from the interface method of three kinds of forms, and each ring body result of sealing each other, cooperating.Test with existing technology motor inorganic oil, need not about more than 10 kilometers, will scuffing of cylinder bore; The cylinder that rises, so completely closed piston tightness of the present invention, piston-ring packing also can be guaranteed the cylinder locking system; All the time be in the optimum state, can significantly improve the power character and the reliability of motor.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technological scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a completely closed piston, air tight piston ring assembly comprise the spring shackle (4), close oil ring (3), the close compression ring (2) that place successively from inside to outside in the compression, and two compression rings (1) of outer ring two laminated; It is characterized in that,
The docking port of said close oil ring (3) comprises the female mouth of socket joint of public mouthful of a side socket joint and opposite side; Said socket joint upwards is divided into both sides and middle three parts for public mouthful in the footpath of said close oil ring (3); Said intermediate portion is the curve bath (5) that cambered surface is parallel to said close oil ring (3) axis; Said two side portions is the arc pin (6) that front end forms the downside boss, and the rearward end of said two side portions is for being connected in the both sides cell body wall that said close oil ring (3) ring body forms said curve bath (5); Female mouthful of said socket joint be also corresponding three parts that are divided into two outsides and internal layer upwards in the footpath of said close oil ring (3); Wherein, layer segment comprises cooperate the to peg graft arc protruding end, middle part (7) of said curve bath (5) of front end, and the be connected interior recess (8) of said arc pin (6) of rear end in said; Said external lateral portion is for constituting the arc protrusion place (9) that said interior recess (8) is connected in said close oil ring (3) ring body;
The docking port of said close compression ring (2) is the structure of axial upper and lower arc boss (10) butt joint; The interface of said upper and lower arc boss (10) is for being parallel to the arc shaped surface of said close compression ring (2) upper and lower end face, and said interface is positioned at the docking port place and states the axial middle part of close compression ring (2);
Said pair of compression ring (1) docking port separately is the structure of radially inside and outside arc salient angle (11) butt joint; The interface of said inside and outside arc salient angle (11) is positioned at the radially middle part of ring width of said pair of compression ring (1), and the interface of said inside and outside arc salient angle (11) is for being parallel to the cambered surface of said pair of compression ring (1) axis.
2. according to the said completely closed piston of claim 1, air tight piston ring assembly, it is characterized in that in said compression, stagger 180 ° of angles of said pair of compression ring (1) docking port separately are provided with.
3. according to the said completely closed piston of claim 1, air tight piston ring assembly, it is characterized in that, said close compression ring (2), close oil ring (3), used material is a spring steel, code name 60S:2Mn.
4. according to the said completely closed piston of claim 1, air tight piston ring assembly, it is characterized in that the structure of said spring shackle (4) is: small semicircle is formed the spring shackle of 13 some one; Perhaps be: positive and negative both direction, the spring shackle that spring sheet is formed.
5. according to the said completely closed piston of claim 1, air tight piston ring assembly, it is characterized in that the position that the interface of said close compression ring is positioned at the staggered 90 ° of angles of two said pair compression ring (1) docking port is provided with.
6. according to the said completely closed piston of claim 1, air tight piston ring assembly, it is characterized in that the staggered 180 ° of angles of the interface of said close oil ring 3 and said close compression ring (2) docking port are provided with.
7. according to the arbitrary said completely closed piston of claim 1-6, air tight piston ring assembly, it is characterized in that the arc length of said pair of compression ring (1) docking port cambered surface is 6mm.
8. according to the arbitrary said completely closed piston of claim 1-6, air tight piston ring assembly, it is characterized in that the arc length of said close compression ring (2) docking port cambered surface is 6mm.
9. according to the arbitrary said completely closed piston of claim 1-6, air tight piston ring assembly, it is characterized in that curve bath (5) arc length of said close oil ring (3) is 10mm; The arc length at said arc pin (6) and said arc protrusion place (9) is 4mm.
10. according to the arbitrary said completely closed piston of claim 1-6, air tight piston ring assembly, it is characterized in that correspondence is respectively arranged with counterbore on the interface of said pair of compression ring (1), in two said counterbores fixing pin is set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200834480U CN202468050U (en) | 2012-03-08 | 2012-03-08 | Totally-closed piston/airtightness piston ring component |
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| CN2012200834480U CN202468050U (en) | 2012-03-08 | 2012-03-08 | Totally-closed piston/airtightness piston ring component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588139A (en) * | 2012-03-08 | 2012-07-18 | 滕源海 | Fully closed piston or gas tightness piston ring component |
| CN106089481A (en) * | 2016-06-18 | 2016-11-09 | 李陶胜 | A kind of nitridation+PVD composite coating concave-concave tang piston ring |
-
2012
- 2012-03-08 CN CN2012200834480U patent/CN202468050U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588139A (en) * | 2012-03-08 | 2012-07-18 | 滕源海 | Fully closed piston or gas tightness piston ring component |
| CN106089481A (en) * | 2016-06-18 | 2016-11-09 | 李陶胜 | A kind of nitridation+PVD composite coating concave-concave tang piston ring |
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