CN103397950B - The piston of assemblage gap pairing energy saving environment protection piston ring - Google Patents
The piston of assemblage gap pairing energy saving environment protection piston ring Download PDFInfo
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- CN103397950B CN103397950B CN201310348622.9A CN201310348622A CN103397950B CN 103397950 B CN103397950 B CN 103397950B CN 201310348622 A CN201310348622 A CN 201310348622A CN 103397950 B CN103397950 B CN 103397950B
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Abstract
The present invention relates to internal combustion engine part manufacturing technology field, specifically a kind of piston of assemblage gap pairing energy saving environment protection piston ring, comprises piston only, is arranged on the top compression ring on piston only, second gas ring; One end of described compression ring ring body opening is prolongation, the other end is the joining part of corresponding length, when joining part and the upper and lower joining of prolongation make compression ring ring body form a full circle, have between the inclined-plane of prolongation and the inclined-plane of joining part and can not increase and the gap of expansion with compression ring wear extent; Gap between the inclined-plane of opening joining place of above-mentioned top compression ring and second gas ring is set to the mixing ratio of fixing, and its ratio is 0.035mm-0.18mm:0.02mm-0.12mm.The present invention significantly can improve sealability and the compression pressure of cylinder, makes fuel oil energy Thorough combustion; And produce carbon deposit never, reduce fuel oil consumption, engine oil consumption reduce blowdown; Significantly improve the every mechanical performance index of internal-combustion engine and economic indicator.
Description
Technical field
The present invention relates to internal combustion engine part manufacturing technology field, be specifically related to the piston of a kind of assemblage gap pairing energy saving environment protection piston ring.
Background technique
In the assembling of internal-combustion engine piston ring uses, general way gap-clearance of piston rings is staggered 120 ° or 180 ° to stop or reduce the lower discharge of high-temperature gas, but the cylinder of large volume uses multiple tracks piston ring still can not obtain desirable sealing effect usually.Especially after using for a long time, piston ring and cylinder friction make the cumulative attrition amount of piston ring and cylinder increase, the opened gap of piston ring can expand gradually, and the high-temperature gas of leakage increases, and causes compression pressure without combustion to decline, fuel oil can not Thorough combustion, cause fuel oil consumption, engine oil consumption rising, combustion engine powered hydraulic performance decline, operating temperature raises, lubrication state worsens, and the harmful matter of discharge such as to increase at the series of negative problem.For addressing this problem, in industry, main employing sets up additional device after outlet pipe, or the method for the finish materials of optimization piston ring and cylinder, to prolong the time that piston ring gap increases; Although the expansion of these methods to gap-clearance of piston rings serves certain retarding action, do not tackle the problem at its root.For meeting the call of demand and the response energy-saving and emission-reduction grown to even greater heights to piston performance in industry, needing the performance improving piston group, really realizing energy-saving and emission-reduction.
Summary of the invention
The object of this invention is to provide the piston of a kind of assemblage gap pairing energy saving environment protection piston ring, there is good seal performance, the feature of energy-conserving and environment-protective.
The present invention adopts following technological scheme to achieve these goals: a kind of piston of assemblage gap pairing energy saving environment protection piston ring, comprise: the piston only being disposed with first gas ring groove, second gas ring groove and oil ring groove from top to bottom, be arranged on the top compression ring in first gas ring groove, the second gas ring be arranged in second gas ring groove, and be arranged on the oil ring in described oil ring groove; The ring body opening of top compression ring and second gas ring adopts identical joining structure, and namely one end of compression ring ring body opening is the prolongation of 3mm-12mm, and the other end is the joining part of corresponding length; Prolongation and joining part have mutually corresponding joining inclined-plane respectively, and described joining inclined-plane is the inclined-plane be obliquely installed to ring bottom by ring body outer side surface; Joining part has the outside reserve part accounting for ring body thickness 3/10 extending upwardly to ring body end face from inclined-plane top margin, and the length extending inwardly to ring body inner side surface from base, inclined-plane is the bottom surface reserve part of 0.30mm-0.85mm; Described prolongation has the joining structure with joining partial complementarity; When the joining part of compression ring and the upper and lower joining of prolongation make compression ring ring body form a full circle, because compression ring can utilize the elastic force of self to come auto-compensation itself and the fricative cumulative attrition amount of cylinder inner wall, have between the inclined-plane of prolongation and the inclined-plane of joining part and can not increase with compression ring wear extent and the gap that expands.
Gap between the inclined-plane of opening joining place of above-mentioned top compression ring and second gas ring is set to the mixing ratio of fixing, i.e. gap pairing, its ratio is 0.035mm-0.18mm:0.02mm-0.12mm.
For ensure compression ring opening joining part during use (about 500,000-60 ten thousand kilometers of distance travelleds) can not throw off, the prolongation of compression ring and the length of joining part are 3mm-12mm, and the prolongation of compression ring or the inclined-plane of joining part and ring bottom are the angle of 15 °-43 °.
For reducing the gap between piston outer wall and cylinder inner wall, reduce high-temperature gas to the direct impact of top compression ring, reduce the operating ambient temperature of compression ring, piston only has the excircle dimension strengthening 0.35mm-0.85mm.
For ensureing the volume expansions cooling of high-temperature gas between top compression ring groove and second gas ring groove of flowing out from the gap, inclined-plane of top compression ring opening joining, make the pressure that this space remains certain, the distance between described first gas ring groove and second gas ring groove is reduced into 3mm-12mm.
For the machine oil making oil ring scrape from cylinder wall is back to sump fast, be provided with the spill port be communicated with sump on the base of described oil ring groove, the base of this spill port and oil ring groove has the angle of 5 °-12 °.
The negative pressure (pump suction) produced for making the pressurized gas rapid equalisation piston stroking upward above oil ring, and then make inner and outer air pressure below piston reach balance instantaneously, the bottom near oil ring groove on piston only is provided with the pressure compensation opening be communicated with piston cavity.
The oil ring main body that described oil ring comprises band end opening and the inner support spring be arranged in this oil ring main body inner circumferential groove, oil ring main body circumferential surface is also provided with spill port, one end of oil ring body openings is the prolongation II of 5mm-8mm, the joining part ii of the other end corresponding length, described prolongation II and joining part ii are respectively arranged with mutually corresponding joining face, wherein, the joining face of prolongation II is the plane parallel with bottom surface upwards extended by oil ring body floor, the joining face of joining part ii be by piston ring main body end face to downward-extension with the plane of top surface being parallel, when joining part ii and prolongation about II joining make oil ring ring body form a full circle, between joining part ii and prolongation II, there is gap.The prolongation II of above-mentioned oil ring and the thickness of joining part ii are all than 1/2 few 0.03mm-0.05mm of ring body thickness; When joining part ii and prolongation about II joining, there is between the joining face of joining part ii and prolongation II expansion gap containing process of 0.06mm-0.10mm, there is between the end face of joining part ii and prolongation II expansion gap of 0.3mm-1.0mm.
From the above mentioned, the ring body opening of top compression ring of the present invention and second gas ring adopts identical joining structure, when the joining part of compression ring and the upper and lower joining of prolongation make compression ring ring body form a full circle, because compression ring can utilize the elastic force of self to come auto-compensation itself and the fricative cumulative attrition amount of cylinder inner wall, have between the inclined-plane of prolongation and the inclined-plane of joining part and can not increase with compression ring wear extent and the gap that expands.Unique passage that this gap is let out under becoming high-temperature gas.According to pressure difference below piston group during I. C. engine exhaust stroke and above, gap between the inclined-plane of opening joining place of top compression ring and second gas ring is set to the mixing ratio of fixing, i.e. gap pairing, its ratio is 0.035mm-0.18mm:0.02mm-0.12mm; With the lower discharge controlling high-temperature gas and the temperature arrived below piston group.Oversize piston excircle dimension reduces the gap between piston and cylinder simultaneously, reduces high-temperature gas to the direct impact of top compression ring, reduces the operating ambient temperature of compression ring.And the distance reduced between first gas ring groove and second gas ring groove is to 3mm-12mm, to ensure that the high-temperature gas flowed out from the gap, inclined-plane of top compression ring opening joining is after the volume expansions cooling between top compression ring groove and second gas ring groove, makes the pressure that this space remains certain; When high-temperature gas flows out through the gap, inclined-plane of second gas ring opening joining place again, temperature is down to less than 70 DEG C, the negative pressure that piston stroking upward produces can just be offset, avoid producing pump and inhale effect, the machine oil that oil ring scrapes can also be accelerated and be back to sump, and can not machine oil be burnt out.Therefore, the present invention has the following advantages: 1. reduce and control down to let out the flow of high-temperature gas and temperature makes it to burn out machine oil, and producing carbon deposit never, reducing fuel oil consumption, engine oil consumption, reduce the discharge amount of harmful matter, really realize energy-saving and emission-reduction; 2. significantly can improve the sealability of cylinder, improve the compression pressure of combustion chamber of air cylinder, make fuel oil all the time can Thorough combustion; 3. significantly improve the every mechanical performance index of internal-combustion engine and economic indicator; 4. solve a historic difficult problem for the oil consumption of high-power diesel engine height, maximum discharge in industry.
Accompanying drawing explanation
The nonlimiting examples that device of the present invention can be provided by accompanying drawing further illustrates.
Fig. 1 is the structural representation that inventive piston is arranged in cylinder;
Fig. 2 is the joining part of compression ring of the present invention and the plan view of the mutual joining of prolongation;
Fig. 3 is the joining part of compression ring of the present invention and the front view of the mutual joining of prolongation;
Fig. 4 is the joining part of compression ring of the present invention and the partial enlarged drawing of prolongation;
Fig. 5 is the structural representation of oil ring of the present invention;
Fig. 6 is the joining part of oil ring of the present invention and the front view of the mutual joining of prolongation;
In figure: 1-compression ring ring body, 2-oil ring, 3-piston only, 4-first gas ring groove, 5-second gas ring groove, 6-oil ring groove, 7-top compression ring, 8-second gas ring, 9-spill port, 10-pressure compensation opening, 11-cylinder, 101-prolongation, 102-joining part, 103-ring body outer side surface, 104-ring bottom, 105-ring body end face, the inclined-plane of 106-prolongation, the inclined-plane of 107-joining part, 108-ring body inner side surface, 201-oil ring main body, 202-inner support spring, 203-spill port, 204-prolongation II, 205-joining part ii, the joining face of 206-prolongation II, the joining face of 207-joining part ii, 212-inner circumferential groove.
Embodiment
Be described further below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, piston of the present invention comprises: the piston only 3 being disposed with first gas ring groove 4, second gas ring groove 5 and oil ring groove 6 from top to bottom, be arranged on the top compression ring 7 in described first gas ring groove, the second gas ring 8 be arranged in described second gas ring groove, and be arranged on the oil ring 2 in described oil ring groove; Ring body 1 opening of described top compression ring 7 and second gas ring 8 adopts identical joining structure, and namely one end of compression ring ring body opening is the prolongation 101 of 3mm-12mm, and the other end is the joining part 102 of corresponding length; Described prolongation and joining part have the joining inclined-plane of mutually answering 5 respectively, described joining inclined-plane is the inclined-plane be obliquely installed to ring bottom 104 by ring body outer side surface 103, and the inclined-plane of described prolongation 101 or joining part 102 and ring bottom are the angle of 15 °-43 °; Joining part has the outside reserve part accounting for ring body thickness 3/10 extending upwardly to ring body end face 105 from inclined-plane top margin, and the length extending inwardly to ring body inner side surface 108 from base, inclined-plane is the bottom surface reserve part of 0.30mm-0.85mm; Described prolongation 101 has the joining structure with joining part 102 complementation; When the joining part 102 of compression ring and prolongation about 101 joining make compression ring ring body form a full circle, because compression ring can utilize the elastic force of self to come auto-compensation itself and the fricative cumulative attrition amount of cylinder inner wall, have between the inclined-plane 106 of prolongation and the inclined-plane 107 of joining part and can not increase with compression ring wear extent and the gap that expands.
During use, because the prolongation of compression ring and joining part have 3mm-12mm length respectively, time together with the upper and lower joining of joining part and prolongation, compression ring can utilize the elastic force of self to come auto-compensation itself and the fricative cumulative attrition amount of cylinder inner wall, the joining part ensureing compression ring opening during use (about 500,000-60 ten thousand kilometers of distance travelleds) can not be thrown off, gap between the inclined-plane of joining place also can not expand, thus ensure that the High Temperature Gas scale of construction of leaking from the joining of compression ring opening is constant, can avoid causing fuel oil to consume, engine oil consumption raises, combustion engine powered hydraulic performance decline, the series of negative problems such as the harmful matter of discharging increases.
Further, the gap between the inclined-plane of opening joining place of top compression ring 7 of the present invention and second gas ring 8 is set to the mixing ratio of fixing, i.e. gap pairing, its ratio is 0.035mm-0.18mm:0.02mm-0.12mm.To ensure that the high-temperature gas flowed out from the gap, inclined-plane of top compression ring 7 opening joining is after the volume expansions cooling between top compression ring groove 4 and second gas ring groove 5, make the pressure that this space remains certain, when high-temperature gas flows out through the gap, inclined-plane of second gas ring 8 opening joining place again, temperature is down to less than 70 DEG C, the negative pressure that piston stroking upward produces can just be offset, avoid producing pump and inhale effect, the machine oil that oil ring scrapes can also be accelerated and be back to sump, and can not machine oil be burnt out.
As shown in Figure 1, piston of the present invention is provided with the spill port 9 that 6-12 the diameter be communicated with sump is 4mm-8mm on the base of described oil ring groove 6, further, for the machine oil making oil ring 2 scrape from cylinder wall is back to sump fast, this spill port 9 is set to be the angle of 5 °-12 ° with oil ring groove 6 base.The negative pressure (pump suction) produced for making the pressurized gas rapid equalisation piston stroking upward above oil ring, and then make inner and outer air pressure below piston reach balance instantaneously, piston only 3 is also provided with the pressure compensation opening 10 that 8-10 the diameter be communicated with piston cavity is 4mm-6mm near the bottom of oil ring groove 6.For reducing the gap between piston outer wall and cylinder 11 inwall, reduce high-temperature gas to the direct impact of top compression ring 7, reduce the operating ambient temperature of compression ring, piston only 3 has the excircle dimension strengthening 0.35mm-0.85mm.For ensureing the volume expansions cooling of high-temperature gas between top compression ring groove 4 and second gas ring groove 5 of flowing out from the gap, inclined-plane of top compression ring 7 opening joining, make the pressure that this space remains certain, the distance between described first gas ring groove 4 and second gas ring groove 5 is reduced into 3.2mm-12mm.
See Fig. 5, Fig. 6, the oil ring main body 201 that oil ring 2 of the present invention comprises band end opening and the inner support spring 202 be arranged in this oil ring main body inner circumferential groove 212, oil ring main body 201 circumferential surface is also provided with spill port 203, one end of described oil ring main body 201 opening is the prolongation II 204 of 5mm-8mm, the joining part ii 205 of the other end corresponding length, described prolongation II 204 and joining part ii 205 are respectively arranged with mutually corresponding joining face, wherein, the joining face 206 of prolongation II is the plane parallel with bottom surface upwards extended by oil ring main body 201 bottom surface, the joining face 207 of joining part ii be by piston ring main body end face to downward-extension with the plane of top surface being parallel.1/2 few 0.03mm-0.05mm of the Thickness Ratio ring body thickness of described prolongation II 204 and joining part 205; When joining part ii 205 and prolongation about II 204 joining, there is between the joining face of joining part ii 205 and prolongation II 204 expansion gap containing process of 0.06mm-0.10mm, there is between the end face of joining part ii 205 and prolongation II 204 expansion gap of 0.3mm-1.0mm.Compared with traditional oil ring, oil ring of the present invention can not leave oil trace at work, and the combination elastic force of oil ring main body and inner support spring can be utilized to come auto-compensation oil ring 2 and the fricative cumulative attrition amount of cylinder wall, thus machine oil saving.Because oil ring 2 defines the full circle of " imperforation " on the whole, the elastic force of the inner support spring that ring body is born is more even, thus can be even, clean scrape machine oil, eliminate the root that carbon distribution produces, extend internal-combustion engine working life.
During use, top compression ring 7, second gas ring 8 and oil ring 2 are being put into respectively first gas ring groove 4 corresponding on piston only 3, second gas ring groove 5 and oil ring groove 6, then insert cylinder 11, now, annular groove bottom surface is close in compression ring bottom surface 104, the outer side surface 108 of compression ring is subject to the extruding of cylinder 11 inwall, the joining part 102 of compression ring opening and prolongation 101 are formed in annular groove coordinate up and down, now, compression ring is made to form the full circle of " imperforation " on the whole, passage is let out under having blocked high-temperature gas, only between joining part 102 and the joining inclined-plane of prolongation 101, leave gap, this gap becomes high-temperature gas can unique passage of manual control, because the prolongation 101 of compression ring and joining part 102 have 3mm-12mm length respectively, when prolongation is together with the joining of joining part, compression ring can utilize the elastic force of self to come auto-compensation itself and the fricative cumulative attrition amount of cylinder inner wall, the joining part ensureing compression ring opening during use (about 500,000-60 ten thousand kilometers of distance travelleds) can not be thrown off, the gap, inclined-plane of joining place also can not expand.
In work, first the high-temperature gas of scurrying out in firing chamber impacts top compression ring 7, because piston only 3 of the present invention has the excircle dimension strengthening 0.35mm-0.85mm, gap between upper piston area cylindrical and cylinder inner wall is reduced, weakens the direct impact of high-temperature gas to top compression ring 7; When cooling of expanding in the space that the gap of high-temperature gas between top compression ring 7 opening joining inclined-plane enters between top compression ring groove 4 and second gas ring groove 5 downwards, because reduce the distance between first gas ring groove 4 and second gas ring groove 5, simultaneously, between the gap, joining inclined-plane of top compression ring 7 and second gas ring 8, there is mixing ratio, control the amount of the high-temperature gas entering or flow out this space, make the pressure that this space remains certain; When the gap of high-temperature gas again between second gas ring 8 opening joining inclined-plane is flowed out, temperature has been down to about 70 DEG C, this temperature not only can not burn out machine oil, the machine oil quick backflow that oil ring 2 can also be impelled to scrape is to sump, produce pump when avoiding piston group up and inhale effect, significantly reduce fuel oil consumption, engine oil consumption and toxic emission, reach the object of energy-conserving and environment-protective.
In an experiment, piston energy-saving emission reduction effect of the present invention is remarkable, and machine power is increased dramatically.
Embodiment 1: piston of the present invention is arranged on fleet of public transport company of Chongqing Bus Group second 248 No. 21438 cars and obtains in NQ160 motor.Cylinder bore diameter 105+
piston external diameter 104.82 millimeters, before installing, this car is in oil consumption lossing state always, engine oil consumption is within 3-5 days, add 0.7 liter of machine oil, after installation, engine oil consumption is within 20-23 days, add 0.7 liter of machine oil, and average fuel-economizing (comparing with another the new original-pack motor changed simultaneously) 12.47 ﹪, have significantly saved fuel oil and machine oil.
Embodiment 2: piston of the present invention is arranged on the upper experiment of " X6130Z7 " (excavator) that People Hangzhou diesel engine factory produces, oil consumption per hour 42.3 liters before installing, after installing, oil consumption per hour is down to 30.46 liters, decreases by 28%, and engine power increases by 11.27%.
Embodiment 3: on probation on 30 " the preposition Newman of Heng Tong " motors piston of the present invention being arranged on public transport company of Chongqing Bus Group second, per 100 km gas 47.3m before installing
3/ car, per 100 km 41.7m after installing
3/ car, solar term rate reaches 11.27%, the highest solar term 14.28%, and power about increases half gear, moment of torsion increase about gear.
As can be seen here, piston of the present invention makes fuel oil all the time can Thorough combustion, significantly reduce fuel oil consumption, engine oil consumption, reduce the discharge of harmful matter, significantly improve the every mechanical performance index of internal-combustion engine and economic indicator, really solve a historic difficult problem for the oil consumption of high-power diesel engine height, maximum discharge in industry, there is good promotional value and application prospect.
Claims (5)
1. a piston for assemblage gap pairing energy saving environment protection piston ring, comprising:
Be disposed with the piston only (3) of first gas ring groove (4), second gas ring groove (5) and oil ring groove (6) from top to bottom; be arranged on the top compression ring (7) in described first gas ring groove, the second gas ring (8) be arranged in described second gas ring groove, and be arranged on the oil ring (2) in described oil ring groove;
It is characterized in that:
Ring body (1) opening of described top compression ring (7) and second gas ring (8) adopts identical joining structure, and namely one end of compression ring ring body opening is the prolongation (101) of 3mm-12mm, and the other end is the joining part (102) of corresponding length; Described prolongation and joining part have mutually corresponding joining inclined-plane respectively, and described joining inclined-plane is the inclined-plane be obliquely installed to ring bottom (104) by ring body outer side surface (103); Joining part has the outside reserve part accounting for ring body thickness 3/10 extending upwardly to ring body end face (105) from inclined-plane top margin, and the length extending inwardly to ring body inner side surface (108) from base, inclined-plane is the bottom surface reserve part of 0.30mm-0.85mm; Described prolongation (101) has the joining structure complementary with joining part (102); When joining makes compression ring ring body form a full circle up and down for the joining part (102) of compression ring and prolongation (101), because compression ring can utilize the elastic force of self to come auto-compensation itself and the fricative cumulative attrition amount of cylinder inner wall, have between the inclined-plane (106) of prolongation and the inclined-plane (107) of joining part and can not increase with compression ring wear extent and the gap that expands;
Gap between the inclined-plane of opening joining place of described top compression ring (7) and second gas ring (8) is set to the mixing ratio of fixing, and its ratio is 0.035mm-0.18mm:0.02mm-0.12mm;
The inclined-plane of described prolongation (101) or joining part (102) and ring bottom are the angle of 15 °-43 °;
Described piston only (3) has the excircle dimension strengthening 0.35mm-0.85mm;
Distance between described first gas ring groove (4) and second gas ring groove (5) is reduced into 3mm-12mm.
2. the piston of assemblage gap pairing energy saving environment protection piston ring according to claim 1; it is characterized in that: be provided with the spill port (9) be communicated with sump on the base of described oil ring groove (6), this spill port (9) has the angle of 5 °-12 ° with the base of oil ring groove (6).
3. the piston of assemblage gap pairing energy saving environment protection piston ring according to claim 1, is characterized in that: the upper bottom near oil ring groove (6) of piston only (3) is provided with the pressure compensation opening (10) be communicated with piston cavity.
4. the piston of assemblage gap pairing energy saving environment protection piston ring according to claim 1, it is characterized in that: the oil ring main body (201) that described oil ring (2) comprises band end opening and the inner support spring (202) be arranged in this oil ring main body inner circumferential groove (212), oil ring main body (201) circumferential surface is also provided with spill port (203), one end of described oil ring main body (201) opening is the prolongation II (204) of 5mm-8mm, the joining part ii (205) of the other end corresponding length, described prolongation II and joining part ii are respectively arranged with mutually corresponding joining face, wherein, the joining face (206) of prolongation II is the plane parallel with bottom surface upwards extended by oil ring main body (201) bottom surface, the joining face (207) of joining part ii be by piston ring main body end face to downward-extension with the plane of top surface being parallel, when joining makes oil ring ring body form a full circle upper and lower II (204) for joining part ii (205) and prolongation, between joining part ii (205) and prolongation II (204), there is gap.
5. the piston of assemblage gap pairing energy saving environment protection piston ring according to claim 4; it is characterized in that: when joining part ii (205) and prolongation are upper and lower II (204) during joining; there is between the joining face of joining part ii (205) and prolongation II (204) expansion gap containing process of 0.06mm-0.10mm, there is between the end face of joining part ii (205) and prolongation II (204) expansion gap of 0.3mm-1.0mm.
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| CN201310348622.9A CN103397950B (en) | 2013-08-12 | 2013-08-12 | The piston of assemblage gap pairing energy saving environment protection piston ring |
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| CN201310348622.9A CN103397950B (en) | 2013-08-12 | 2013-08-12 | The piston of assemblage gap pairing energy saving environment protection piston ring |
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| CN103397950B true CN103397950B (en) | 2015-11-18 |
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| CN111963681A (en) * | 2020-08-05 | 2020-11-20 | 蚌埠艾普压缩机制造有限公司 | Piston ring of reciprocating compressor |
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| JPH04107572U (en) * | 1991-02-28 | 1992-09-17 | 帝国ピストンリング株式会社 | Piston for internal combustion engine |
| JP2502336Y2 (en) * | 1991-05-30 | 1996-06-19 | 帝国ピストンリング株式会社 | Piston ring with coil expander |
| JP2012052590A (en) * | 2010-08-31 | 2012-03-15 | Nippon Piston Ring Co Ltd | Two-piece oil ring for preventing rotation and rotation preventive structure of two-piece oil ring using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR762862A (en) * | 1933-10-24 | 1934-04-19 | Improvements to piston rings | |
| US4575107A (en) * | 1983-02-12 | 1986-03-11 | Kabushiki Kaisha Riken | Piston rings for internal combustion engine |
| CN1159511A (en) * | 1995-10-30 | 1997-09-17 | 株式会社理研 | Wearing-resistant parts, especially the piston ring of internal combustion engine |
| CN201050417Y (en) * | 2007-03-21 | 2008-04-23 | 重庆宗申技术开发研究有限公司 | Piston and cylinder cooperation structure of motorcycle engine |
| CN203081605U (en) * | 2013-01-14 | 2013-07-24 | 上海云童机械有限公司 | Diesel engine seal assembly |
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| CN103397950A (en) | 2013-11-20 |
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Address after: The 400052 District of Chongqing Kowloon Park Panlong Road No. 68 building 33 of No. 157 Applicant after: Chongqing Jiangrun Piston Ring Co., Ltd. Address before: 400080 Chongqing Dadukou District weir village 41 Building No. 33 Applicant before: Chongqing Jiangrun Piston Ring Co., Ltd. |
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