CN1374445A - Completely closed piston and piston ring assembly - Google Patents
Completely closed piston and piston ring assembly Download PDFInfo
- Publication number
- CN1374445A CN1374445A CN 02108683 CN02108683A CN1374445A CN 1374445 A CN1374445 A CN 1374445A CN 02108683 CN02108683 CN 02108683 CN 02108683 A CN02108683 A CN 02108683A CN 1374445 A CN1374445 A CN 1374445A
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- piston
- face
- ring
- compression
- elastic ring
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- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 88
- 238000007906 compression Methods 0.000 claims description 88
- 238000012856 packing Methods 0.000 claims description 16
- 239000003921 oil Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000001739 rebound effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The present invention is one completely closed piston and piston ring assembly. The gas ring groove of the piston has ring notch with side wall parallel to the side wall of the gas ring groove; the elastic ring is a closed one with elastic blades to seal the ring notch; springs to make the piston ring contact closely to the inner wall of the cylinder are set in some area between the elastic ring and the gas ring groove; and the elastic ring has outer side matching with the inner side of two branch gas ring. The present invention can cut off the passage of backlashs between the piston ring and the piston ring grooves, improve the sealing performance of the cylinder and raise the service life of the engine.
Description
Technical field
The present invention relates to a kind of completely closed piston, piston-ring packing, special relevant with the cooperating structure of piston, piston ring.
Background technique
In the cooperating structure of piston, piston ring, the passage of back clearance like this, just has the appearance of crankcase machine oil to cylinder pump oil phenomenon between existing between piston ring and the piston ring groove at the bottom of two sideshakes and piston ring inner circle and piston ring groove, thereby make cylinder produce carbon deposit, cause cylinder wear.Especially in the middle and later periods of motor operation, because wearing and tearing such as piston ring annular groove, piston ring, cylinders, the space of sideshake, back clearance is strengthened, and pump oil phenomenon is more serious, so that the flashing plug is stained with oil, and carbon deposit is smoldered, exhaust pollution, faults such as power failure.At present, in order effectively to improve the closed performance of cylinder, it is a lot of that piston ring is improved the technology that makes it more to seal, a kind of sealing technique without leakage for piston ring is disclosed as CN1274054A, ring in one of two outer shroud is housed in the one piston ring groove, piston ring otch axial leakage is blocked mutually by two outer shrouds, carries on the back the leakage of the outside rings cut of gas in the gap at the bottom of the annular groove and is blocked by interior ring.CN2144734Y discloses a kind of completely closed piston, piston-ring packing for another example, and the interior circle of its two compression rings is equipped with the enclosed elastic ring, and this enclosed elastic ring is an opening.The complex structure that these prior arts have, what have does not cut off the sideshake between piston ring and the piston ring groove and the passage of back clearance, is therefore promoted widely and uses.
Summary of the invention
The purpose of this invention is to provide a kind of completely closed piston, piston-ring packing, technical problem to be solved is to make this piston, piston-ring packing can cut off the sideshake between piston ring and the piston ring groove and the passage of back clearance, and the cylinder seal system that can guarantee motor is in good working order all the time, thereby improves the working life of motor.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of completely closed piston, piston-ring packing, be placed with the compression ring that two branch ostium interlace in the compression of piston, the radially inner side end face of two compression rings is equipped with elastic ring, its technological scheme is: the compression bottom surface of piston has along the annular groove of at least one sidewall of this compression, and the parallel sidewalls of the non-compression sidewall of described annular groove is in the compression sidewall; Described elastic ring is for the closed ring body of opening, and that the radially inner side end face axial end of elastic ring has is radially-protruding along it, enter and cooperate with it in the above-mentioned annular groove and with the spring leaf of this annular groove sealing; The holding area that has mounting spring between the radially inner side end face of elastic ring and the compression bottom surface of piston applies active force and makes elastic ring and piston ring, piston ring contact more closely spring with cylinder inner wall elastic ring and is located in this holding area; Has the cooperating structure that matches between the radial outside end face of elastic ring and the radially inner side end face of two compression rings.
In the technique scheme, the compression bottom surface of described piston has along a sidewall of this compression or the annular groove of two sidewalls.Above-mentioned spring can be leaf spring, and its shape of cross section of holding area of mounting spring is a rectangular between the radially inner side end face of elastic ring and the compression bottom surface of piston.Above-mentioned spring can also be helical spring, and its shape of cross section of holding area of mounting spring is circular between the radially inner side end face of elastic ring and the compression bottom surface of piston.The cooperating structure that matches between the radial outside end face of above-mentioned elastic ring and the radially inner side end face of two compression rings can be single bridging arrangement, the radial outside end face axial end of elastic ring extends radially out a flange along it, and the radially inner side end face axial end of two compression rings is corresponding to have a described flange and enter the breach that cooperates with it in it.Described cooperating structure can be two bridging arrangements, two axial end portions of the radial outside end face of elastic ring radially respectively stretch out a flange along it, and two axial end portions of the radially inner side end face of two compression rings are corresponding respectively to have a described flange and enter the breach that cooperates with it in it.Described cooperating structure can be that the radial outside end face of elastic ring has a concave curved surface, and the radially inner side end face of two compression rings has a convex surface that enters in the described concave curved surface.Described cooperating structure can be that the radial outside end face of elastic ring and the radially inner side end face of two compression rings are the cylndrical surface.Described cooperating structure can be that the radial outside end face of elastic ring is the concavo-convex alternate tooth-shape structure of crouching, and the radially inner side end face of two compression rings is the alternate tooth-shape structure of crouching of convex-concave that matches with it.
Said structure of the present invention, between the compression top and bottom sidewall that makes described elastic ring and match, between the spring leaf of elastic ring and the annular groove top and bottom sidewall that matches with it, between the cooperating structure that matches of the radially inner side end face of the radial outside end face of elastic ring and two compression rings, the sideshake between piston ring (i.e. two compression rings) and the piston ring groove and the passage of back clearance have been cut off with it; Simultaneously, because elastic ring is subjected to the extruding of radially inner side end face and the spring of two compression rings that elastic ring is applied active force, so elastic ring and piston ring, piston ring contacts tightr with cylinder inner wall, even if in engine operation to the middle and later periods, cylinder, after the wearing and tearing of two compression rings and side back clearance strengthen, because the rebound effect of elastic ring and the elastic force effect of spring, elastic ring and piston ring, piston ring still can closely contact with cylinder inner wall, the present invention has automatic closed piston ring, the effect in the space that cylinder wall wearing and tearing back produces, it has sealed oil pump oil path effectively, played good seal action, it makes cylinder chamber not have carbon deposit, and is very favourable to reducing cylinder wear.Because crankcase is gas blowby not, makes machine oil pollution-free, no carbon deposit can not increase the wearing and tearing of parts such as bent axle, bearing, gear, has saved lubricant oil.Because no back clearance does not just have counterpressure yet, piston ring does not just have near the phenomenon generation that produces step the common cylinder top dead center to just there not being huge positive pressure near the cylinder wall top dead center yet.Because pollution-free, no carbon deposit, the motor service wear is little, and the phenomenon that does not also just have the bulge cylinder takes place, and the power of motor is promoted, and has saved fuel.The present invention also can guarantee that the cylinder seal system of motor is in good working order all the time, thereby has improved the working life of motor.
The present invention is used for motorcycle four-stroke engine, the cylinder diameter of motor is φ 39mm, and there is 0.03mm step radially at the top dead center place, with standard openings 0.25mm compression ring, join elastic ring of the present invention and piston, then use three groups of opening compression rings, first group is 1.5mm's, second group be 2.5mm, and the 3rd group is 6.5mm, and sideshake does not wait at 0.1-0.3mm.Through test, the present invention can play good seal action, and can guarantee that the cylinder seal system of motor is in good working order all the time, has had the working life of motor to increase substantially.
Used its material of elastic ring of the present invention is preferably perfluor ether, this material has very outstanding temperature tolerance (rationally serviceability temperature is for-45 ℃-316 ℃), can under 288 ℃ of temperature, use for a long time, it combines the spring-back force and the sealing force of elastic material, and the erosion of anti-nearly all chemical reagent, its operating temperature is far above upper limit working temperature 230-240 ℃ of the piston ring that now measures, so technological scheme of the present invention is feasible, safety.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the partial enlarged view (first embodiment) of I among Fig. 1.
Fig. 3 is along the sectional view of A-A line among Fig. 1.
Fig. 4 is the partial view of second embodiment of the invention.
Fig. 5 is the partial view of third embodiment of the invention.
Fig. 6 is the partial view of four embodiment of the invention.
Fig. 7 is the partial view of fifth embodiment of the invention.
Fig. 8 is the partial view of sixth embodiment of the invention.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, first embodiment of the present invention be equipped with in the cylinder 1 compression ring 3 and 3 that piston 2, two branch ostium interlace ', elastic ring 4, spring 7.The compression ring 3 and 3 that two branch ostium interlace ' be located in the compression of piston 2, two compression rings 3 and 3 ' the radially inner side end face elastic ring 4 is housed, the width of elastic ring is corresponding with two times of compression ring width.The compression bottom surface of above-mentioned piston has along the annular groove 5 of a sidewall of this compression, and the sidewall 51 of the non-compression sidewall of annular groove 5 is parallel to the compression sidewall.Described elastic ring 4 is for the closed ring body of opening, and that the radially inner side end face axial end of elastic ring 4 has is radially-protruding along it, enter and cooperate with it in the above-mentioned annular groove 5 and with the spring leaf 42 of this annular groove sealing.Present embodiment is because the quantity of annular groove 5 is one, therefore, cooperates with it and spring leaf 42 quantity of this annular groove sealing also are one.The holding area 6 that has mounting spring 7 between the radially inner side end face of elastic ring 4 and the compression bottom surface of piston, holding area 6 its shape of cross sections are circular, elastic ring applied active force and make elastic ring and piston ring, piston ring contact more closely spring 7 with cylinder inner wall be located in this holding area 6, spring 7 is a helical spring.The radial outside end face of elastic ring 4 and two compression rings 3 and 3 ' the radially inner side end face between have the cooperating structure that matches, this cooperating structure can be single bridging arrangement, be that the radial outside end face axial end of elastic ring extends radially out along it that radially inner side end face axial end of 41, two compression rings of a flange is corresponding to have a described flange 41 and enter the breach that cooperates with it in it.Be subjected to two compression rings 3 and 3 ' radially inner side end face extruding elastic ring 4 its axial upper and lower end faces respectively with the compression of piston up and down two sidewalls closely contact, because the rebound effect of elastic ring and the elastic force effect of spring 7, elastic ring 4 still can move along two sidewalls about the compression, and it is tightr to make that piston ring contacts with cylinder inner wall.
As Fig. 4, shown in Figure 5, second of the present invention, the 3rd embodiment be equipped with in the cylinder 1 piston 2, two branch ostium interlace the compression ring 3 and 3 that is preferably 180 ° ', elastic ring 4, spring 7.The compression ring 3 and 3 that two branch ostium interlace ' be located in the compression of piston 2, two compression rings 3 and 3 ' the radially inner side end face elastic ring 4 is housed, the width of elastic ring is corresponding with two times of compression ring width.The compression bottom surface of above-mentioned piston has two annular grooves 5 along two sidewalls of this compression, and the sidewall 51 of the non-compression sidewall of each annular groove 5 is parallel to the compression sidewall.Described elastic ring 4 is for the closed ring body of opening, and that the radially inner side end face axial end of elastic ring 4 has is radially-protruding along it, enter and cooperate with it in the above-mentioned annular groove 5 and with the spring leaf 42 of this annular groove sealing.Because the quantity of annular groove 5 is two, therefore, cooperates with it and spring leaf 42 quantity of this annular groove sealing also are two.The holding area 6 that has mounting spring 7 between the radially inner side end face of elastic ring 4 and the compression bottom surface of piston.The radial outside end face of elastic ring 4 and two compression rings 3 and 3 ' the radially inner side end face between have the cooperating structure that matches, this cooperating structure is two bridging arrangements, be that two axial end portions of radial outside end face of elastic ring stretch out respectively radially along it that two axial end portions of radially inner side end face of 41, two compression rings of flange are corresponding respectively to have a described flange 41 and enter the breach that cooperates with it in it.Second embodiment and the 3rd embodiment are different, as shown in Figure 4, second embodiment of the present utility model is that described holding area 6 its shape of cross sections are rectangular, elastic ring applied active force and make elastic ring and piston ring, piston ring contact more closely spring 7 with cylinder inner wall be located in this holding area 6, spring 7 is a leaf spring.As shown in Figure 5, the 3rd embodiment of the present utility model is that described holding area 6 its shape of cross sections are for circular, elastic ring applied active force and make elastic ring and piston ring, piston ring contact more closely spring 7 with cylinder inner wall be located in this holding area 6, spring 7 is a helical spring.Be subjected to two compression rings 3 and 3 ' radially inner side end face extruding elastic ring 4 its axial upper and lower end faces respectively with the compression of piston up and down two sidewalls closely contact, because the rebound effect of elastic ring and the elastic force effect of spring 7, elastic ring 4 still can move along two sidewalls about the compression, and it is tightr to make that piston ring contacts with cylinder inner wall.
As shown in Figure 6, the 4th embodiment of the present invention is with reference to the 3rd embodiment, the radial outside end face of different with the 3rd embodiment is described elastic ring 4 and two compression rings 3 and 3 ' the radially inner side end face between the cooperating structure that matches be, the radial outside end face of elastic ring has a concave curved surface, and the radially inner side end face of two compression rings has a convex surface that enters in the described concave curved surface.
As shown in Figure 7, the 5th embodiment of the present invention is with reference to the 3rd embodiment, the radial outside end face of different with the 3rd embodiment is described elastic ring 4 and two compression rings 3 and 3 ' the radially inner side end face between the cooperating structure that matches be that the radial outside end face of elastic ring and the radially inner side end face of two compression rings are the cylndrical surface.
As shown in Figure 8, the 6th embodiment of the present invention is with reference to the 3rd embodiment, the radial outside end face of different with the 3rd embodiment is described elastic ring 4 and two compression rings 3 and 3 ' the radially inner side end face between the cooperating structure that matches be, the radial outside end face of elastic ring is the concavo-convex alternate tooth-shape structure of crouching, and the radially inner side end face of two compression rings is the alternate tooth-shape structure of crouching of convex-concave that matches with it.
Claims (10)
1, a kind of completely closed piston, piston-ring packing are placed with the compression ring that two branch ostium interlace in the compression of piston, the radially inner side end face of two compression rings is equipped with elastic ring, it is characterized in that:
The compression bottom surface of piston has the annular groove (5) along at least one sidewall of this compression, and the sidewall (51) of the non-compression sidewall of described annular groove (5) is parallel to the compression sidewall;
Described elastic ring (4) is for the closed ring body of opening, and that the radially inner side end face axial end of elastic ring (4) has is radially-protruding along it, enter and cooperate with it in the above-mentioned annular groove (5) and with the spring leaf (42) of this annular groove sealing;
The holding area (6) that has mounting spring between the radially inner side end face of elastic ring (4) and the compression bottom surface of piston applies active force and makes elastic ring and piston ring, piston ring contact more closely spring (7) with cylinder inner wall elastic ring and is located in this holding area (6);
Has the cooperating structure that matches between the radially inner side end face of the radial outside end face of elastic ring (4) and two compression rings (3,3 ').
2, completely closed piston according to claim 1, piston-ring packing is characterized in that the compression bottom surface of above-mentioned piston has along the annular groove (5) of a sidewall of this compression.
3, completely closed piston according to claim 1, piston-ring packing is characterized in that the compression bottom surface of above-mentioned piston has along the annular groove (5) of two sidewalls of this compression.
4, completely closed piston according to claim 1, piston-ring packing, it is characterized in that above-mentioned spring (7) can be leaf spring, its shape of cross section of holding area (6) of mounting spring is a rectangular between the radially inner side end face of elastic ring and the compression bottom surface of piston.
5, completely closed piston according to claim 1, piston-ring packing, it is characterized in that above-mentioned spring (7) can also be helical spring, its shape of cross section of holding area (6) of mounting spring is circular between the radially inner side end face of elastic ring and the compression bottom surface of piston.
6, according to claim 1 or 2 or 4 or 5 described completely closed pistons, piston-ring packing, it is characterized in that the cooperating structure that matches between the radially inner side end face of the radial outside end face of above-mentioned elastic ring (4) and two compression rings (3,3 ') can be single bridging arrangement, the radial outside end face axial end of elastic ring extends radially out a flange (41) along it, and the radially inner side end face axial end of two compression rings is corresponding to have a described flange (41) and enter the breach that cooperates with it in it.
7, according to claim 1 or 3 or 4 or 5 described completely closed pistons, piston-ring packing, it is characterized in that the cooperating structure that matches between the radially inner side end face of the radial outside end face of above-mentioned elastic ring (4) and two compression rings (3,3 ') can be two bridging arrangements, two axial end portions of the radial outside end face of elastic ring radially respectively stretch out a flange (41) along it, and two axial end portions of the radially inner side end face of two compression rings are corresponding respectively to have a described flange (41) and enter the breach that cooperates with it in it.
8, according to claim 1 or 3 or 4 or 5 described completely closed pistons, piston-ring packing, it is characterized in that the cooperating structure that matches between the radially inner side end face of the radial outside end face of above-mentioned elastic ring (4) and two compression rings (3,3 ') can be, the radial outside end face of elastic ring has a concave curved surface, and the radially inner side end face of two compression rings has a convex surface that enters in the described concave curved surface.
9, according to claim 1 or 3 or 4 or 5 described completely closed pistons, piston-ring packing, it is characterized in that the cooperating structure that matches between the radially inner side end face of the radial outside end face of above-mentioned elastic ring (4) and two compression rings (3,3 ') can be that the radial outside end face of elastic ring and the radially inner side end face of two compression rings are the cylndrical surface.
10, according to claim 1 or 3 or 4 or 5 described completely closed pistons, piston-ring packing, it is characterized in that the cooperating structure that matches between the radially inner side end face of the radial outside end face of above-mentioned elastic ring (4) and two compression rings (3,3 ') can be, the radial outside end face of elastic ring is the concavo-convex alternate tooth-shape structure of crouching, and the radially inner side end face of two compression rings is the alternate tooth-shape structure of crouching of convex-concave that matches with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02108683 CN1374445A (en) | 2002-04-18 | 2002-04-18 | Completely closed piston and piston ring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02108683 CN1374445A (en) | 2002-04-18 | 2002-04-18 | Completely closed piston and piston ring assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1374445A true CN1374445A (en) | 2002-10-16 |
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ID=4740361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02108683 Pending CN1374445A (en) | 2002-04-18 | 2002-04-18 | Completely closed piston and piston ring assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1374445A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072042A (en) * | 2011-01-12 | 2011-05-25 | 滕源海 | Hermetic piston ring |
| CN103115099A (en) * | 2013-02-02 | 2013-05-22 | 浙江吉尚汽车部件有限公司 | Limit elastic body and manufacturing method thereof |
| CN104220791A (en) * | 2012-02-17 | 2014-12-17 | 费德罗-莫格尔公司 | Piston ring for an internal combustion engine |
| CN107503857A (en) * | 2017-10-16 | 2017-12-22 | 湖南城市学院 | Internal combustion engine ring assemblies |
-
2002
- 2002-04-18 CN CN 02108683 patent/CN1374445A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072042A (en) * | 2011-01-12 | 2011-05-25 | 滕源海 | Hermetic piston ring |
| CN104220791A (en) * | 2012-02-17 | 2014-12-17 | 费德罗-莫格尔公司 | Piston ring for an internal combustion engine |
| US10125869B2 (en) | 2012-02-17 | 2018-11-13 | Tenneco Inc. | Piston ring for an internal combustion engine |
| CN103115099A (en) * | 2013-02-02 | 2013-05-22 | 浙江吉尚汽车部件有限公司 | Limit elastic body and manufacturing method thereof |
| CN107503857A (en) * | 2017-10-16 | 2017-12-22 | 湖南城市学院 | Internal combustion engine ring assemblies |
| CN107503857B (en) * | 2017-10-16 | 2023-12-05 | 湖南城市学院 | Piston ring assembly of internal combustion engine |
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