CN102330584B - Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine - Google Patents
Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine Download PDFInfo
- Publication number
- CN102330584B CN102330584B CN 201110223167 CN201110223167A CN102330584B CN 102330584 B CN102330584 B CN 102330584B CN 201110223167 CN201110223167 CN 201110223167 CN 201110223167 A CN201110223167 A CN 201110223167A CN 102330584 B CN102330584 B CN 102330584B
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- Prior art keywords
- piston
- oil
- connection rod
- hole
- bushing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/10—Cooling by flow of coolant through pistons
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to a cooling lubricating structure used for a piston connection rod of a reciprocating piston internal combustion engine. The skirt part of a piston is provided with a pin hole, the connection rod is hinged with the skirt part of the piston through a piston pin, a connection rod bushing is arranged between the connection rod and the piston pin, a piston bushing is arranged between the piston pin and the pin hole; the inner side wall of the skirt part of the piston is provided with a skirt part oil hole, a nozzle is arranged in the skirt part oil hole; the head part of the piston is internally provided with an annular oil collection groove, the opening of the annular oil collection groove is provided with an annular spring sheet, the spring sheet is provided with an oil inlet gap which corresponding to the skirt part oil hole; the inner wall of the annular oil collection groove is provided with an oil supply hole, the annular oil collection groove is communicated with a space at the top of the connection rod through the oil supply hole; and the top of the connection rod is provided with a connection rod oil hole, the connection rod bushing is provided with a bushing oil hole correspondingly communicated with the connection oil hole, and the inner circumferential wall of the connection rod bushing is provided with a semicircle of bushing lubricating oil channel which is positioned on the same circumference with the bushing oil hole. The cooling lubricating structure has skilled structure and good lubricating effect, and can ensure that the piston connection rod operates reliably for a long time.
Description
Technical field
The invention belongs to technical field of internal combustion engines, specifically relate to a kind of cooling and lubricating structure that is used for the stroke piston combustion engine piston rod.
Background technique
Be known that the wrist pin and the piston bushing of internal combustion engine, the connecting rob bushing organic oil comes cooling and lubricating, and prevents to block or burn.The machine oil of the ejection through the jet pipe space that has for example proposed arrives in the annular oil trap; Because the to-and-fro motion of piston; Make the machine oil vibration in the annular oil trap, generation is splashed, and makes wrist pin, piston bushing and connecting rob bushing obtain cooling and lubricated; But in running, produce cooling and lubricated insufficient sometimes, more abundant in order to cool off and to lubricate.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the existing technology, a kind of cooling and lubricating structure that is used for the stroke piston combustion engine piston rod is provided, its structure is ingenious, and high lubricating effect can ensure the long-time reliable operation of piston rod.
According to technological scheme provided by the invention: a kind of cooling and lubricating structure that is used for the stroke piston combustion engine piston rod, connecting rod is through wrist pin and piston hinge, and piston comprises piston skirt and piston crown; It is characterized in that: said piston skirt is provided with pin-and-hole, and said connecting rod is hinged through wrist pin and the piston skirt that is contained in the pin-and-hole, between connecting rod and the wrist pin connecting rob bushing is housed, and between wrist pin and the pin-and-hole piston bushing is housed; The madial wall of said piston skirt is provided with the skirt section oilhole, is provided with nozzle in the oilhole of skirt section; Be provided with annular oil trap in the said piston crown, the opening of annular oil trap is equipped with the spring sheet of an annular, on spring sheet, has the oil-feed space, and the oil-feed space is corresponding with described skirt section oilhole; The inwall of said annular oil trap is provided with oil supply hole, and annular oil trap is connected through the space of oil supply hole with the connecting rod top; Said connecting rod top is provided with the connecting rod oilhole, and said connecting rob bushing is provided with the lining oilhole with the corresponding connection of connecting rod oilhole, and the connecting rob bushing inner circle wall is provided with half-turn and the lining oil leab of lining oilhole on same circumference.
As further improvement of the present invention, the aperture of said oil supply hole is between Φ 2 ~ Φ 6.
As further improvement of the present invention, the center line of said oil supply hole and the central axis of piston have certain included angle.Preferably, this angle is between 60 ° ~ 70 °.
As further improvement of the present invention, the outer end of said connecting rod oilhole is the conical hopper shape.
The present invention compared with prior art, advantage is: structure of the present invention is ingenious, through annular oil trap is set at piston crown; And on annular oil trap, offer oil supply hole; Make a part of cutting oil to pass through in the space at oil supply hole entering connecting rod top, and get in the lining oil leab, connecting rob bushing, piston bushing and wrist pin are lubricated via connecting rod oilhole and lining oilhole owing to the to-and-fro motion of piston; Improve the cooling and lubricating condition between them; Reduce the surface friction drag that they rotate each other, high lubricating effect can ensure the long-time reliable operation of piston rod.
Description of drawings
Fig. 1 is a structure front view of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional drawing.
Description of reference numerals: 1-piston crown, 2-annular oil trap, 3-connecting rob bushing, 4-piston spring sheet, 5-piston bushing, 6-piston skirt, 7-wrist pin, 8-oil-feed space, 9-connecting rod, 10-nozzle, 11-oil supply hole, 12-connecting rod oilhole, 13-skirt section oilhole, 14-lining oilhole, 15-lining oil leab.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in the figure: the present invention relates to a kind of cooling and lubricating structure that is used for stroke piston combustion engine piston rod 9, said connecting rod 9 is hinged through wrist pin 7 and piston, and piston comprises piston skirt 6 and piston crown 1; Said piston skirt 6 is provided with pin-and-hole, and said connecting rod 9 is hinged with piston skirt 6 through the wrist pin 7 that is contained in the pin-and-hole, between connecting rod 9 and the wrist pin 7 connecting rob bushing 3 is housed, and piston bushing 5 is housed between wrist pin 7 and the pin-and-hole; The madial wall of said piston skirt 6 is provided with skirt section oilhole 13, is provided with nozzle 10 in the skirt section oilhole 13; Be provided with annular oil trap 2 in the said piston crown 1, the opening of annular oil trap 2 is equipped with the spring sheet 4 of an annular, on spring sheet 4, has oil-feed space 8, and oil-feed space 8 is corresponding with described skirt section oilhole 13; The inwall of said annular oil trap 2 is provided with oil supply hole 11, and annular oil trap 2 is connected through the space of oil supply hole 11 with connecting rod 9 tops; Said connecting rod 9 tops are provided with connecting rod oilhole 12, and said connecting rob bushing 3 is provided with the lining oilhole 14 with the 12 corresponding connections of connecting rod oilhole, and connecting rob bushing 3 inner circle walls are provided with half-turn and the lining oil leab 15 of lining oilhole 14 on same circumference.
Like Fig. 1, shown in Figure 2, be the cutting oil inlet of control link 9 head rooms, the aperture of said oil supply hole 11 preferably is arranged between Φ 2 ~ Φ 6.For making the cutting oil that gets in connecting rod 9 head rooms can get into smoothly in connecting rob bushing 3 and the piston bushing 5, the center line of said oil supply hole 11 and the central axis of piston should be arranged to certain included angle α, and this angle is preferably between 60 ° ~ 70 °.Simultaneously, the outer end of connecting rod oilhole 12 preferably is set to the conical hopper shape.
During concrete the application; Nozzle 10 sprays into cutting oil in the annular oil trap 2 through skirt section oilhole 13 and oil-feed space 8; Because the spring sheet 4 on annular oil trap 2 openings has certain elasticity, and the cutting oil that sprays into is shaken in annular oil trap 2; Because concussion effect; There is 1/3rd cutting oil to get in the space at connecting rods 9 tops approximately, gets in the lining oil leabs 15 via connecting rod oilhole 12 and lining oilhole 14 then, connecting rob bushing 3, piston bushing 5 and wrist pin 7 are lubricated through oil supply hole 11; Improve the cooling and lubricating condition between them; Reduce the surface friction drag that they rotate each other, high lubricating effect can ensure piston rod 9 long-time reliable operations.Foundation is based on wrist pin wrist pin piston piston.
Claims (4)
1. cooling and lubricating structure that is used for the stroke piston combustion engine piston rod, connecting rod (9) is hinged through wrist pin (7) and piston, and piston comprises piston skirt (6) and piston crown (1); It is characterized in that: said piston skirt (6) are provided with pin-and-hole; Said connecting rod (9) is hinged with piston skirt (6) through the wrist pin (7) that is contained in the pin-and-hole; Between connecting rod (9) and the wrist pin (7) connecting rob bushing (3) is housed, piston bushing (5) is housed between wrist pin (7) and the pin-and-hole; The madial wall of said piston skirt (6) is provided with skirt section oilhole (13), is provided with nozzle (10) in the skirt section oilhole (13); Be provided with annular oil trap (2) in the said piston crown (1); The opening of annular oil trap (2) is equipped with the spring sheet (4) of an annular; On spring sheet (4), have oil-feed space (8), oil-feed space (8) are corresponding with described skirt section oilhole (13); The inwall of said annular oil trap (2) is provided with oil supply hole (11), and annular oil trap (2) is connected through the space of oil supply hole (11) with connecting rod (9) top; Said connecting rod (9) top is provided with connecting rod oilhole (12); Said connecting rob bushing (3) is provided with the lining oilhole (14) with the corresponding connection of connecting rod oilhole (12), and connecting rob bushing (3) inner circle wall is provided with half-turn and the lining oil leab (15) of lining oilhole (14) on same circumference.
2. the cooling and lubricating structure that is used for the stroke piston combustion engine piston rod as claimed in claim 1 is characterized in that: the center line of said oil supply hole (11) and the central axis of piston have certain included angle (α).
3. the cooling and lubricating structure that is used for the stroke piston combustion engine piston rod as claimed in claim 2 is characterized in that: the angle (α) of the center line of said oil supply hole (11) and the central axis of piston is between 60 ° ~ 70 °.
4. the cooling and lubricating structure that is used for the stroke piston combustion engine piston rod as claimed in claim 1 is characterized in that: the outer end of said connecting rod oilhole (12) is the conical hopper shape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110223167 CN102330584B (en) | 2011-08-05 | 2011-08-05 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
| PCT/CN2012/079592 WO2013020478A1 (en) | 2011-08-05 | 2012-08-02 | Cooling and lubricating structure for use on piston rod of reciprocating internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110223167 CN102330584B (en) | 2011-08-05 | 2011-08-05 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102330584A CN102330584A (en) | 2012-01-25 |
| CN102330584B true CN102330584B (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110223167 Active CN102330584B (en) | 2011-08-05 | 2011-08-05 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102330584B (en) |
| WO (1) | WO2013020478A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330584B (en) * | 2011-08-05 | 2012-12-19 | 无锡开普动力有限公司 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
| CN103437899A (en) * | 2013-08-02 | 2013-12-11 | 大连滨城活塞制造有限公司 | Piston skirt with petal-shaped head structure |
| CN104153909A (en) * | 2014-08-28 | 2014-11-19 | 河南柴油机重工有限责任公司 | Intensive-cooling steel piston of gas engine |
| CN104265396A (en) * | 2014-09-08 | 2015-01-07 | 广西玉柴机器股份有限公司 | Connecting rod spray nozzle for throttling and accelerating |
| CN105156171B (en) * | 2015-08-18 | 2017-08-25 | 河南柴油机重工有限责任公司 | A kind of lubrication fabricated structure of engine piston connecting rod group |
| CN107152350A (en) * | 2017-06-09 | 2017-09-12 | 华晨汽车集团控股有限公司 | A kind of engine piston connecting rod assembly |
| CN109653895A (en) * | 2018-11-15 | 2019-04-19 | 北京理工大学 | A kind of device improving small end of connecting rod lubrication state |
| CN111207002A (en) * | 2018-11-22 | 2020-05-29 | 强莉莉 | Piston |
| CN109723566A (en) * | 2019-02-28 | 2019-05-07 | 一汽解放汽车有限公司 | A kind of link assembly reducing piston heat load |
| CN109799086B (en) * | 2019-03-21 | 2021-02-23 | 潍柴动力股份有限公司 | Connecting rod oil inlet oil collecting capacity testing arrangement |
| CN111102095B (en) * | 2019-12-20 | 2021-05-28 | 中国北方发动机研究所(天津) | Low heat dissipation composite structure piston |
| CN114251152B (en) | 2020-09-22 | 2022-12-20 | 马勒汽车技术（中国）有限公司 | Lubrication mechanism for pin joint pair of internal combustion engine |
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| CN2557701Y (en) * | 2002-04-19 | 2003-06-25 | 山东巨菱股份有限公司 | Crankshaft with link lever brush lubrication device for single cylinder diesel engine |
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| CN202220674U (en) * | 2011-08-05 | 2012-05-16 | 无锡开普动力有限公司 | Cooling lubricating structure for a reciprocating piston type internal combustion engine piston connection rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05332114A (en) * | 1992-06-03 | 1993-12-14 | Toyota Autom Loom Works Ltd | Piston lubricating device by oil nozzle hole of connecting rod small end part |
| DE4325903C1 (en) * | 1993-08-02 | 1994-09-08 | Daimler Benz Ag | Piston pin bearing |
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| CN2542841Y (en) * | 2002-06-10 | 2003-04-02 | 文冲 | New piston |
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| JP2006170066A (en) * | 2004-12-15 | 2006-06-29 | Toyota Motor Corp | Oil supply device |
| JP2007107503A (en) * | 2005-10-17 | 2007-04-26 | Nissan Diesel Motor Co Ltd | Piston cooling structure |
| CN201050413Y (en) * | 2007-05-26 | 2008-04-23 | 潍柴动力股份有限公司 | Engine piston |
| CN102330584B (en) * | 2011-08-05 | 2012-12-19 | 无锡开普动力有限公司 | Cooling lubricating structure used for piston connection rod of reciprocating piston internal combustion engine |
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2011
- 2011-08-05 CN CN 201110223167 patent/CN102330584B/en active Active
-
2012
- 2012-08-02 WO PCT/CN2012/079592 patent/WO2013020478A1/en active Application Filing
Patent Citations (4)
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| CN2557701Y (en) * | 2002-04-19 | 2003-06-25 | 山东巨菱股份有限公司 | Crankshaft with link lever brush lubrication device for single cylinder diesel engine |
| CN2653153Y (en) * | 2002-06-10 | 2004-11-03 | 吉林大学 | Bionic scale type pressure lubrication piston |
| CN1818354A (en) * | 2006-03-12 | 2006-08-16 | 张水军 | Lubricating structure of crankshaft connecting rod neck of single-cylinder diesel engine |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013020478A1 (en) | 2013-02-14 |
| CN102330584A (en) | 2012-01-25 |
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