CN102235264B - There is the end-clearance-free piston ring of locating slot - Google Patents
There is the end-clearance-free piston ring of locating slot Download PDFInfo
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- CN102235264B CN102235264B CN201010169486.3A CN201010169486A CN102235264B CN 102235264 B CN102235264 B CN 102235264B CN 201010169486 A CN201010169486 A CN 201010169486A CN 102235264 B CN102235264 B CN 102235264B
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Abstract
The invention discloses a kind of hermetically sealed diagonal cut end-clearance-free piston ring having locating slot, its piston ring external diameter girth grows the size of port overlap than cylinder bore girth.First end-clearance-free piston ring is bucket face or cylinder, and with the intersection point of piston ring axial cross section periphery and upper-end surface projection line, the diagonal selecting inner cylindrical surface and lower end surface projection line intersection point along periphery projection line δ distance cooks tangent plane.Second end-clearance-free piston ring is taper-face ring, be made up of the upper conical surface and the lower cylinder being highly θ, with the intersection point of piston ring axial cross section external cylindrical surface and lower end surface projection line, cook tangent plane along external cylindrical surface projection line δ distance to the diagonal of inner cylindrical surface and upper-end surface projection line intersection point.Diagonal cut is plane or cambered surface.Piston ring two ends is respectively by upper four limit wedge shape ribs and lower triangular prism and upper triangular prism and lower four limit wedge shape ribs, and face, termination and end shoulder face are formed.Parallel to the axis with the projection line in end shoulder face is equidistant or meets at axis with axis being parallel respectively in face, termination.Open with small arc-shaped locating slot at the arbitrary end of two ends apart from end face distance τ, match with the locating stud at the bottom of the annular groove of piston and play the effect that piston ring prevents from rotating.This end-clearance-free piston ring possesses integrated abrasion compensation, energy-conserving and environment-protective.Starting Technical state is remained within the scope of wear compensation.
Description
Technical field
The present invention relates to a kind of internal-combustion engine, that air compressor uses is hermetically sealed, be equipped with the locating slot preventing adjacent pistons ring counterpart, possess the piston ring of the diagonal cut structure of integrated abrasion compensation, be referred to as the end-clearance-free piston ring of locating slot.
Background technique
In prior art, internal-combustion engine, air-compressor piston ring are straight flange kerf, also have the hypotenuse otch of only a few and cascade otch all without locating slot.Straight flange otch piston ring is most widely used general.It utilizes the close compression ring in Liang Zhi tetra-road, and adjacent piston ring is staggered 120 °-180 ° with straight flange otch on piston, forms mazy sealing configuration, reaches close gas effect.The design different according to internal-combustion engine, regular price gasoline machine is the close compression rings of twice, and diesel engine is the close compression ring in Liang Zhi tetra-road, specifically selects the close compression ring in a few road to be made by oneself by each manufacturing enterprise.Its principle is the more of compression ratio and compression pressure highly denser compression ring setting, and its close gas is better.Because piston ring countercylinder wall has positive pressure, thus piston ring to arrange more surface friction drag larger, overcome merit that surface friction drag consumes and fuel more.Actual is reach with consume fuel to extend effective sealing.Because piston ring is a non-normal ellipse, after cylinder is by piston and piston ring scuffing, lose circularity and post degree, straight flange otch end gap increases, and along with each adjacent pistons rings cut alignment.Wearing and tearing make piston ring side clearance increase and close gas lost efficacy, and the close gas of counterpart lost efficacy.Cause that compression pressure in firing chamber reduces, the heat of compression declines, detonation velocity slows down, revealed to crankcase by the gas that compresses and exploding gas.Thus make combustion engine powered reduction, alter lubricant oil generation burn oil to firing chamber and emit blue smoke, discharge a large amount of CH, CO and NO with motor simultaneously
xdeng not firing only flammable and harmful gaseous contamination environment.The gas of internal-combustion engine high temperature, high pressure scurries into that crankcase makes oil ageing, analyses carbon, gelatinize, forfeiture lubricating function in addition.Concerning air compressor: air pressure is difficult to improve, and in gas storage bag, oils increases, and energy consumption increases, and efficiency reduces, and so far must combustion motor and air compressor carry out large repairs; Boring cylinder, replacing piston and piston ring.Hypotenuse otch piston ring is substantially identical with straight flange otch piston ring, and only tilt straight flange otch an angle.Cascade otch piston ring can compensate the port gap because cylinder inner wall, piston ring external diameter wear and tear and increase, but there is pressurized air and detonation gas from upper shed gap, and on ring and annular groove, sideshake enters piston ring groove bottom, scurries out, enter down one ring and crankcase through under shed.Internal-combustion engine compression pressure can be reduced equally, increase fuel consumption, power of IC engine is declined.
Summary of the invention
The object of the invention is to avoid the deficiencies in the prior art, and a kind of piston ring of similar cascade otch is provided.After cylinder inner wall and piston ring external diameter wear and tear, integrated abrasion compensation can be possessed.Gas leakage can not be caused because piston ring otch aligns, close gas was lost efficacy.Pressurized gas can not be produced and exploding gas alters crankcase under the sideshake, end gap of piston ring, lubricating oil carry-over can not be gone up and enter firing chamber, within the scope of wear compensation, remain the original compression pressure of internal-combustion engine, can not power be reduced.Make fuel combustion more abundant, reduce the discharge of HC and CO and the generation of NOx.Reduce oil ageing.That improves fuel oil makes full use of rate, fuel saving, extend internal-combustion engine overhaul mileage, provide sealing tighter, the end-clearance-free piston ring having locating slot that prevents the hermetically sealed diagonal cut of each road piston ring.
The object of the present invention is achieved like this: the girth of piston ring grows gap-clearance of piston rings termination overlapping dimension than the girth of cylinder bore.Overlapping dimension adds the size in required gap of expanding, as the length of otch boss.The otch of piston ring is diagonal cut structure, namely top piston ring is by the projection line of termination axial cross section along outer garden cylinder or bucket face, the diagonal of projection line to piston ring inner circle cylinder and lower end surface projection line intersection point is started near piston ring upper-end surface projection line crosspoint small distance, cook a tangent plane with this diagonal, make two ends be the complementary otch overlapped.The lower triangular prism termination of this diagonal structure otch is the shutoff gap of piston and cylinder wall in cylinder, upper four wedge shape rib terminations, limit are overlapped on lower triangular prism termination, the gap that shutoff time triangle end face and four limit wedge shape rib ends are takeed on.Thus seal up the upper sideshake of piston ring and piston ring groove, upper shed gap leaks the gas of coming in, and gas can not be entered down in one piston ring land and annular groove, and even crankcase, reach close gas effect.Second piston ring is taper-face ring, its cornerwise otch is contrary with the otch of top piston ring, namely along the external cylindrical surface projection line of piston ring ends axial cross section, intersection point small distance near lower end surface projection line starts the diagonal to upper-end surface and inner cylindrical surface projection line intersection point, cook a tangent plane with this diagonal, make two ends be complementary overlap joint otch.Otch is lower four limit wedge shape ribs and upper triangular ridges structure, plays the effect prevented to firing chamber pump lubricating oils.In order to prevent piston ring, piston ring is located in piston groove, at piston ring inner circle cylinder, near driving an anti-rotation locating slot near termination, at the bottom of the annular groove of piston, inlaying a little pin, for embedding in the anti-rotation locating slot of piston ring, working the positioning action preventing piston ring rotary.
Owing to adopting technique scheme, compression pressure without combustion can be improved when cold car, when cylinder of internal-combustion engine wall, the wearing and tearing of piston ring external diameter, as long as diagonal cut also overlaps, compression pressure and deflagration pressure would not be reduced, reduce the idle work that compression stroke is done, can not gas blowby lubricating oil carry-over up and down, sufficient combustion, reduces the discharge of exhaust pollutant, improves the power of internal-combustion engine.And each ring prevents from rotating counterpart, ring and cylinder wall even wearing, makes it to become and possesses integrated abrasion compensation, extends the working life of internal-combustion engine, saving fuel oil, lubricant oil, the discharge of decreasing pollution thing tail gas.
Accompanying drawing explanation
The classification of general piston ring is first set forth before explanation.By materials classification: have cast iron, spheroidal graphite cast iron, Chrome carbon steel etc., by Function Classification: have close compression ring and oil ring, close compression ring divides two classes by structure shape: a class is that piston ring axial cross section is divided into rectangle, trapezoidal and wedge shape, and another kind of is that outer peripheral surface is divided into cylinder, bucket face and the conical surface.Piston ring with taper face is used to last one ring in close compression ring, can separately select barrel face ring or cylinder ring according to design at the close compression ring by piston tip and add the close compression ring of one to twice use capable of being combined bucket face ring and cylinder ring again.
Fig. 1 is the cylinder of the hermetically sealed diagonal cut end-clearance-free piston ring of the present invention or the plan view of bucket face (cylinder please read Figure 14) rectangle piston ring.First define, plan view dextrorotation turn 90 degrees, the opening front in the presence of of piston ring, the termination on the left of diagram opening is left end head, and the termination on right side is right end.The A-A of cutting line shown in figure is through the slice location of piston ring right end by the center of circle, and A-A sectional view illustrates the position of piston ring right end partial enlargement B.Apart from face, termination on piston ring inner circle cylinder
τif a small arc-shaped locating slot 10, and locating stud is set bottom piston ring groove matches, play the positioning action preventing piston ring from rotating.
Fig. 2 is the local B enlarged view of Fig. 1.The line of point 04 and point 05 and elongation line are the projection lines of piston ring upper-end surface, and the line of point 01 and point 06 and elongation line are the projection lines of piston ring lower end surface.Diagonal refers to from the intersection point 04 of upper-end surface and external cylindrical surface or bucket face projection line along external cylindrical surface or some small distances of bucket face projection line
δthe point 03 of 0 arrives the oblique line of the intersection point 06 of lower end surface and inner cylindrical surface projection line, cooks a tangent plane with the diagonal of this oblique line.10 is small arc-shaped locating slot.
Fig. 3 is the position of the port outer lower side shaft side figure of end-clearance-free piston ring bucket face rectangular ring and the partial enlargement C of gap-clearance of piston rings place.
Fig. 4 is the Local C enlarged view of Fig. 3, and the stereochemical structure of right end and the intersection point label of each shape face intersection are shown.The line of point 03,04,05,06 is the face, termination of right end four limit cleat planes, and point 01,02,07 be that the end of right end triangle projective planum takes on face, and the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively.Diagonal cut is a little 06,07 connect straight line and put along the plane of point 03,06 diagonal composition or to put 06, the 07 camber line edge formed in inner cylindrical surface and lower end surface the cambered surface that 03,06 diagonal that is connected forms.Present thus inner cylindrical surface, upper-end surface,
δthe external cylindrical surface of width, diagonal cut point 02,03,06,07 plane or cambered surface form four limit wedge shape rib convex platforms and point 01,02,07 for planar delta end and take on the piston ring right end in face.Complementary end structure is become with point 11,12,13,14,17 one_to_one corresponding of left end head.
Fig. 5 be end-clearance-free piston ring bucket face keystone ring port in the position of partial enlargement D of upper shaft mapping and gap-clearance of piston rings place.The upper-end surface of keystone-type piston ring is the conical surface, and lower end surface is the reverse conical surface.
Fig. 6 is the local D enlarged view of Fig. 5, and the stereochemical structure of left end head and the intersection point label of each shape face intersection are shown.The line of point 11,12,17 is the face, termination of triangle projective planum, and the line of point 13,14,15,16 is the end shoulder face of four limit cleat planes, and the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively.Diagonal cut is a little 16,17 connect straight lines and to form camber line edge in inner cylindrical surface and lower end surface and put along the plane of point 12,17 diagonal composition or to put 16,17 the cambered surface that 17,12 diagonal be connected form.Present outer barrel face, lower end surface, diagonal cut point 12,13,16,17 plane or cambered surface thus to form prismatic lower convex platform and put the left end head that 13,14,15,16 are the piston ring in four cleat planes ends shoulder faces, limit, become complementary structure with the upper four limit wedge shape boss of right end shown in Fig. 4.Apart from face, termination on piston ring inner circle cylinder
τif a small arc-shaped locating slot 10, and locating stud is set bottom piston ring groove matches, play the positioning action preventing piston ring from rotating.
Fig. 7 is the plan view of conical surface rectangle piston ring.The E-E of cutting line shown in figure is through the position of right end end face by center of circle cutting, and E-E sectional view illustrates the position of piston ring right end partial enlargement F.The periphery of piston ring with taper face be by the conical surface and
θthe cylndrical surface composition of width.Apart from face, termination on piston ring inner circle cylinder
τif a small arc-shaped locating slot 10, and locating stud is set bottom piston ring groove matches, play the positioning action preventing piston ring from rotating.
Fig. 8 is the local F enlarged view of Fig. 7.The line of point 21 and point 27 and elongation line are the projection lines of piston ring lower end surface, and the line of point 24 and point 26 and elongation line are the projection lines of piston ring upper-end surface.Diagonal refers to from lower end surface and external cylindrical surface projection line intersection point 21 along some small distances of external cylindrical surface projection line
δpoint 22 to the oblique line of the intersection point 26 of upper-end surface and inner cylindrical surface projection line, cook a tangent plane with this diagonal, the tangent plane contrary with the diagonal of Fig. 2.
θthe height of external cylindrical surface,
θbe more than or equal to
δ.
Fig. 9 is the port interior below shaft side figure of conical surface rectangular ring and the partial enlargement G of gap-clearance of piston rings place.
Figure 10 is the local G enlarged view of Fig. 9, and the stereochemical structure of left end head and the intersection point label of each shape face intersection are shown.The line of point 33,34,35 is the face, termination of triangle projective planum, and the line of point 31,32,36,37 is the end shoulder face of four limit cleat planes, and the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively.The cambered surface that diagonal cut forms along the diagonal putting 33, the 35 diagonal composition planes connected or be connected to put 35, the 36 camber lines edge points 33,35 formed in inner cylindrical surface and upper-end surface for point 35,36 connection straight line.Present the piston ring left end head that male cone (strobilus masculinus), upper-end surface, point 32,33,35,36 plane or cambered surface form four tapered end shoulder faces, limit of prismatic convex platform and point 31,32,36,37 lines thus, form complementary structure with four limit wedge shape rib lower convex platforms of right end.Apart from face, termination on piston ring inner circle cylinder
τif a small arc-shaped locating slot 10, and locating stud is set bottom piston ring groove matches, play the positioning action preventing piston ring from rotating.
Figure 11 is the outer upper shaft side figure of port of conical surface rectangular ring and the partial enlargement H of gap-clearance of piston rings place.
Figure 12 is the local H enlarged view of Figure 11, and the stereochemical structure of right end and the label of each shape face intersection intersection point are shown.The line of point 21,22,26,27 is the face, termination of four limit cleat planes, and the line of point 23,24,25 is the end shoulder face of triangle projective planum, and the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively.Diagonal cut forms camber line edge at inner cylindrical surface and upper-end surface for point 25,26 connects straight lines and puts along point 22,26 diagonal composition planes or to put 25,26 the cambered surface that the diagonal of 22,26 lines forms.Present thus ring inner cylinder, lower end surface,
δthe external cylindrical surface of width, the tangent plane selecting 22,23,25,26 planes or cambered surface form the piston ring right end of four limit wedge shape rib lower convex platforms, point 31,32,33,34,35,36, the 37 termination face corresponding with left end head and hold shoulder face complementary.
θthe height of external cylindrical surface,
θbe more than or equal to
δ.The left end head of the upper prismatic boss shown in this right end and Figure 10 forms the end-clearance-free piston ring of complementary structure.
Figure 13 is that cylinder rectangle end-clearance-free piston ring is placed in cylinder or ring gauge termination closes up the plan view of working state.
tfor the size of piston ring ends overlap joint, the size that I-I cutting line symmetry is overlapped by termination
t, 40 is ring gauge or cylinder bucket, and 10 for being located at the small arc-shaped locating slot of inner cylindrical surface.I-I sectional view illustrates that partial enlargement J is in piston ring ends lap-joint.
Figure 14 is the enlarged view of Figure 13 local J.The head of left end shown in figure is upper four limit wedge shape ribs, and right end is the sealing configuration of lower triangular ridges.Point 11,12,17 is the subpoint of left end head end women's head-ornaments intersection point, and in bracket, point 01,02,07 is the subpoint of right-hand member head end shoulder face intersection point.
Figure 15 is the outer upper shaft side figure of barrel port of face rectangle end-clearance-free piston ring working state.Illustrate that partial enlargement K is in piston ring ends lap-joint.
Figure 16 is the enlarged view of Figure 15 local K, and termination overlap joint size is shown
twith the gap that the end face of termination is takeed on end
s.The length of boss equals T+s.The distance in small arc-shaped locating slot 10 and face, termination
τ.
Figure 17 is the port outer lower side shaft side figure of conical surface rectangle piston ring working state.Illustrate that partial enlargement L is in piston ring ends lap-joint.
Figure 18 is the enlarged view of Figure 17 local L, and termination overlap joint size is shown
twith the gap that the end face of termination is takeed on end
s.Cylinder height
θ.The distance of small arc-shaped locating slot 10 and end face
τ.
Embodiment
The contrast of Fig. 1, Fig. 2, Figure 13, Figure 14, Figure 15 and Figure 16, presents piston ring and makes to being placed in cylinder or in ring gauge the working state that opening is closed by nature.Show the end-clearance-free piston ring two ends lap length of hermetically sealed diagonal cut
t, be heated required clearance for expansion
s, at piston ring inner circle cylinder apart from its face, termination
τif a small arc-shaped locating slot 10, or at the other end apart from its face, termination
τif a small arc-shaped locating slot 10 as shown in figure 18.Hatching I-I is symmetrical through lap length
twith piston ring axle center.Lap length
tadd clearance for expansion
sfor end shoulder face is to the size of face, termination boss.As shown in Fig. 2, Figure 14, diagonal refers to from point 04 along some small distances of external cylindrical surface projection line
δthe oblique line of point 03 to point 06, do diagonal cut with this oblique line.The lower triangular ridges boss shutoff of the left end of end-clearance-free piston ring shown in Figure 14 head gap between piston and cylinder diameter direction, the upper four limit wedge shape rib boss shutoff of the right end gaps between left end head end women's head-ornaments and right-hand member head end shoulder face, the shutoff gas leakage of firing chamber to crankcase direction.Form hermetically sealed diagonal cut end-clearance-free piston ring possess the design feature of integrated abrasion compensation.In the process that cylinder inner cylinder and piston ring excircle face are worn and torn mutually, as long as
tthe sealability of its piston ring of > 0 remains the optimum state, and as T=0, the sealing characteristics of this technology just enters the mounting technology state of prior art straight flange otch piston ring.It is be length by point 02 to point 03 that right end shown in Fig. 4 represents four limit wedge shape rib boss on different rectangles, trapezoidal and keystone ring, and width is
δouter drum face or cylinder, the upper-end surface of point 04,05, the inner cylindrical surface of point 05,06, point 06,07 connect plane that straight line forms along point 06,03 diagonal or with put 06, the 07 camber line edge formed in inner cylindrical surface and lower end surface put 06,03 diagonal that is connected form cambered surface diagonal cut formed.The end shoulder face of the plane composition right end of the line of point 01,02,07, the face, termination of four limit cleat planes composition right end of point 03,04,05,06 line, the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively.It is by the length of point 12 to point 13 that left end head shown in Fig. 6 represents triangular ridges boss under different rectangles, trapezoidal and keystone ring, width be a little 11 to the outer drum face of point 12 or cylinder, point 11,17 lower end surface with to put plane that 12,13,16,17 lines are formed along point 17,12 diagonal or to form camber line edge in interior cylinder and lower end surface and put the diagonal cut that 17,12 diagonal be connected form cambered surface to put 16,17 and formed.The end shoulder face of four limit cleat planes composition left end heads of point 13,14,15,16 lines, the face, termination of the triangle projective planum composition left end head of point 11,12,17 lines, the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively, left and right termination complete complementary.Be the lower gas leakage to crankcase direction of upper four limit wedge shape rib boss and lower triangular ridges boss structure sealed combustion chamber with piston ring ends.
The contrast of Fig. 7, Fig. 8, Figure 10, Figure 12 and Figure 18, presents conical surface rectangle diagonal cut end-clearance-free piston ring opening nature and at cylinder bucket inner opening closed state.
τfor the distance of locating slot and end face, two ends lap length
t, be heated required clearance for expansion
s.The cutting of hatching E-E through the face, termination of right end by axle center, the diagonal of conical surface rectangle, trapezoidal, wedge shape (ladder, wedge shape are not mapped) end-clearance-free piston ring is from the intersection point 21 of external cylindrical surface projection line and lower end surface projection line along external cylindrical surface one as shown in Figure 8
δsmall distance point 22 is to the oblique line of point 26.Right end shown in Figure 12 represent four limit wedge shape rib boss under different rectangles, trapezoidal and keystone ring be by point 22 to point 23 for length be highly
δexternal cylindrical surface, to select 21 with the lower end surface of selecting 27, inner cylindrical surface and the diagonal cut of selecting 27,26,25 be select 25,26 to be connected straight line along select the plane of 26,22 diagonal compositions or selecting the tangent plane that 26,22 diagonal be connected form cambered surface formed to select 25, the 26 camber lines edges formed in inner cylindrical surface and upper-end surface.The end shoulder face of the plane composition right end of point 23,24,25 lines, the face, termination of point 21,22,26,27 composition right end, the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively.Figure 10 illustrate left end head represent different rectangles, trapezoidal with triangular ridges boss on wedge shape conical surface end-clearance-free piston ring by point 32 to point 33 be the cylndrical surface of length, the upper-end surface of point 34,35,36 to be connected straight line and to form plane along point 35,33 diagonal or put the diagonal cut that 33,35 diagonal be connected form cambered surface formed to put 35, the 36 camber lines edges formed in inner cylindrical surface and upper-end surface with point 35,36.The end shoulder face of four limit cleat planes composition left end heads of point 31,32,36,37 lines, the face, termination of the triangle projective planum composition left end head of point 33,34,35 lines, the projection line of two planes and piston ring axis are equidistant parallel or meet at axis with axis being parallel respectively, left and right termination complete complementary.Be that upper triangular ridges boss and lower four limit wedge shape rib boss structure pressurized crankcases alter oil to the upper gas blowby in direction, firing chamber with piston ring ends.Figure 18 illustrates that the outer conical surface of piston ring with taper face is made up of the conical surface and cylinder, and cylinder height is
θbe more than or equal to
δ.
Be to be understood that, below explanation is in conjunction with the embodiments just illustrative and nonrestrictive for the purpose of the present invention, without departing from the spirit and scope of the present invention, can make many changes and amendment to the present invention, it all will drop in the scope of the invention defined by the claims.
Claims (1)
1. one kind has the end-clearance-free piston ring of locating slot, the otch of piston ring is the structure of diagonal cut, and be provided with the locating slot preventing piston ring rotary, it is characterized in that: the line of the intersection point 03,04,05,06 of bucket face, cylinder piston ring right end each shape face intersection is the face, termination of four limit cleat planes, the line of point 01,02,07 is the end shoulder face of triangle projective planum, the line of the intersection point 11,12,17 of left end head each shape face intersection is the face, termination of triangle projective planum, and the line of point 13,14,15,16 is the end shoulder face of four limit cleat planes; The line of the intersection point 33,34,35 of piston ring with taper face left end head each shape face intersection is the face, termination of triangle projective planum, the line of point 31,32,36,37 is the end shoulder face of four limit cleat planes, the line of the intersection point 21,22,26,27 of right end each shape face intersection is the face, termination of four limit cleat planes, and the line of point 23,24,25 is the end shoulder face of triangle projective planum; The projection line in the face, termination of two ends and end shoulder face and piston ring axis equidistant parallel or meet at axis with axis being parallel respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010169486.3A CN102235264B (en) | 2010-04-25 | 2010-04-25 | There is the end-clearance-free piston ring of locating slot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010169486.3A CN102235264B (en) | 2010-04-25 | 2010-04-25 | There is the end-clearance-free piston ring of locating slot |
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| Publication Number | Publication Date |
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| CN102235264A CN102235264A (en) | 2011-11-09 |
| CN102235264B true CN102235264B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065129A (en) * | 1991-03-18 | 1992-10-07 | 欧阳而顺 | The gapless piston ring of inclined-plane lapping ring end |
| US5564699A (en) * | 1995-02-15 | 1996-10-15 | Caterpillar Inc. | Side and gap sealed oil ring |
| CN2338497Y (en) * | 1997-02-21 | 1999-09-15 | 李明武 | Leakage-free piston ring and matched piston thereof |
| CN1916448A (en) * | 2005-07-25 | 2007-02-21 | 杨应捷 | Piston ring with no end gap, and piston of containning the piston ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325259A (en) * | 1998-05-19 | 1999-11-26 | Nok Corp | Seal ring |
-
2010
- 2010-04-25 CN CN201010169486.3A patent/CN102235264B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065129A (en) * | 1991-03-18 | 1992-10-07 | 欧阳而顺 | The gapless piston ring of inclined-plane lapping ring end |
| US5564699A (en) * | 1995-02-15 | 1996-10-15 | Caterpillar Inc. | Side and gap sealed oil ring |
| CN2338497Y (en) * | 1997-02-21 | 1999-09-15 | 李明武 | Leakage-free piston ring and matched piston thereof |
| CN1916448A (en) * | 2005-07-25 | 2007-02-21 | 杨应捷 | Piston ring with no end gap, and piston of containning the piston ring |
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|---|---|
| CN102235264A (en) | 2011-11-09 |
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Inventor after: Pang An Inventor after: Yang Yingjie Inventor before: Yang Yingjie Inventor before: Yang Xijing |
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