CN104948338B - A kind of piston and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber - Google Patents
A kind of piston and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber Download PDFInfo
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- CN104948338B CN104948338B CN201510378285.7A CN201510378285A CN104948338B CN 104948338 B CN104948338 B CN 104948338B CN 201510378285 A CN201510378285 A CN 201510378285A CN 104948338 B CN104948338 B CN 104948338B
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- fuel feed
- feed hole
- cooling oil
- piston
- oil chamber
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- 238000001816 cooling Methods 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000000446 fuel Substances 0.000 claims abstract description 82
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 122
- 239000007921 spray Substances 0.000 claims description 19
- 238000005266 casting Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000012208 gear oil Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 2
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 150000003839 salts Chemical group 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000004141 microcephaly Diseases 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000009514 concussion Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of pistons and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber, including the cyclic annular cooling oil chamber, the first fuel feed hole positioned at piston the same side and the second fuel feed hole that are located in piston crown and positioned at the oil outlet of the first fuel feed hole and the second fuel feed hole opposite；The ring-type cooling oil chamber is provided with for changing the obstacle of cooling oil flow direction on the position between the first fuel feed hole and the second fuel feed hole, and the first fuel feed hole, the second fuel feed hole and oil outlet are communicated with the cyclic annular cooling oil chamber.There are two the cooling atomizers that the monoblock cast aluminum piston of fuel feed hole, an oil outlet and reverse circulation cooling oil chamber is arranged with engine tilts to match for band of the present invention, the loading of cooling oil in oil pocket can be effectively increased, it is substantially reduced the operating temperature of piston crown, it prevents piston because of failures such as scuffing of cylinder bore, the crackings of the excessively high appearance of thermic load, guarantees the reliability of engine operation.
Description
Technical field
The present invention relates to internal combustion engine technical fields, more particularly to one kind to have Two In and One Out reverse circulation cooling oil chamber
Piston and preparation method thereof.
Background technique
With the progress of internal-combustion engine technology and the continuous upgrading of emission level, medium and heavy engine is always close to high power
It spends, the direction of high explosion pressure is developed, engine operating temperature continuous improvement.Piston is held as the core component in engine
The thermic load received is higher and higher.And thermic load is to lead to one of main factor of piston failure.Reduce pistons work thermic load
Have become internal combustion engine industry research staff issues that need special attention in recent years.The common cooling oil chamber of original conventional aluminum alloys piston
Concussion loop structure is matched with the cooling atomizer of engine vertically upward, since oil spout reflection seriously leads to cooling oil oil inlet
Inefficiency, inner-cooling oil recess oil mass lack of fill cause piston to be difficult to bear higher thermic load, are not able to satisfy engine Gao Gong
Rate, high strengthening and the requirement of low emission.Also have using open type fuel feed hole one-way circulation inner-cooling oil recess entirety aluminum piston and engine
The structure that inclined cooling plate atomizer matches, this piston technique is relatively easy, but open type cooling oil chamber and inclined cooling plate oil spout
When mouth matches, to guarantee sufficiently long oil inlet time and enough oil inlet quantities, it is necessary to design the opening of open type fuel feed hole
It is very long, when fuel feed hole opening is too long, since the cooling oil sprayed into hole reflects, also will affect oil inlet efficiency, opening is grown
Degree is mutually restricted with both oil spout refractive index, it is difficult to ensure that in cooling oil chamber oil mass filling.
Summary of the invention
The object of the invention is to of the existing technology in order to solve the problems, such as, providing one kind, there is Two In and One Out inversely to follow
The engine cool atomizer of the piston and preparation method thereof of ring cooling oil chamber, this piston and inclination arrangement matches, can be big
The big reflection and refraction for reducing cooling oil, oil inlet efficiency significantly improve, and the filling of inner-cooling oil recess oil mass is sufficient, and cooling oil is inversely shaken
It swings and recycles the exchange for being more advantageous to piston crown heat and take away, piston heat load effect is obvious to reducing.Single-piece piston uses
Aluminium alloy cast form, cooling oil chamber and disengaging oilhole are cast as by the special-shaped salt core of special shape with Piston mould cooperation
Shape, simple process, piston cooling effect is more preferable, advantageously reduces the operating temperature of piston, improves the reliability that piston uses.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of piston with Two In and One Out reverse circulation cooling oil chamber, including the cyclic annular cooling oil being located in piston crown
Chamber, the first fuel feed hole positioned at piston the same side and the second fuel feed hole and positioned at the first fuel feed hole and the second fuel feed hole opposite
Oil outlet；The ring-type cooling oil chamber is provided on the position between the first fuel feed hole and the second fuel feed hole for changing cold
But oil stream to obstacle, the first fuel feed hole, the second fuel feed hole and oil outlet are communicated with the cyclic annular cooling oil chamber.
Preferably, the obstacle is to keep off oily boss.
Preferably, first fuel feed hole and the second fuel feed hole are obliquely installed, and are matched with the atomizer being obliquely installed.
Preferably, the tilt angle of the atomizer remains unchanged.
Preferably, the atomizer is 5-15 ° relative to the tilt angle of vertical direction.
Preferably, the piston is integrally formed.
Preferably, the piston is by aluminium alloy casting and forming.
Preferably, the inclination of cooling oil flow bean sprays into the first fuel feed hole, and cooling oil is under the action of the gear oily boss
Enter cooling oil chamber clockwise, is vibrated along clockwise direction in cooling oil cavity circulation；Piston continues to run, cooling oil spray
Enter the second fuel feed hole, and under the blocking for keeping off oily boss, enters cooling oil chamber in the counterclockwise direction, and counterclockwise cold
Oily cavity circulation oscillation；The cooling oil of right-hand circular and the cooling oil of left-hand circular are converged, and flow out, take away from oil outlet
The heat of piston crown.
Preferably, when cooling oil can neither spray into the first fuel feed hole, can not spray into the second fuel feed hole, cooling oil is sprayed on
Piston cavity top between first fuel feed hole and the second fuel feed hole, while taking away piston cavity top heat, to piston pin and company
Bar microcephaly plays the role of lubrication.
The manufacturing method of the piston with Two In and One Out reverse circulation cooling oil chamber, includes the following steps:
1, it extrudes with reeded special-shaped salt core, and is processed into the shape of setting；
2, Piston mould is manufactured, is processed in the internal model of mold for casting the first fuel feed hole, the second fuel feed hole and going out
The protrusion of oilhole；
3, single-piece piston blank casting；
4, milling riser carried out to piston blank, rush salt core and heat treatment；
5, roughing is carried out to piston, reaming is carried out to the first fuel feed hole, the second fuel feed hole and oil outlet；
6, piston is finished, obtains finished product.
The principle that the present invention works: piston of the invention is the all-aluminium piston of monoblock cast, have in head one it is whole
The special-shaped cooling oil chamber of annular in week, cooling oil chamber have the first fuel feed hole, the second fuel feed hole and an oil outlet, among two fuel feed holes
There are the one and half gear oil boss opened up.One of this piston structure and the installation of engine cylinder body bottom is tilted a certain angle upwards
Cooling oil atomizer matches, and the cooling oil and cylinder holes axis that cooling oil atomizer sprays are in a fixed angle.As crankshaft turns
The variation at angle, piston pump in cylinder jacket, and piston operates in the certain crank angle range of half trip on cylinder sleeve
When in the period, cooling oil inclination sprays into the first fuel feed hole, and enters along clockwise direction under intermediate gear oil boss effect
Cooling oil chamber, while being vibrated in the direction of the clock in oily cavity circulation；Turn when piston operates in the certain crankshaft of half trip under cylinder sleeve
When in the period of angular region, cooling oil still presses constant angle inclination and sprays into the second fuel feed hole, and in the blocking for keeping off oily boss
Lower generation is catadioptric, enters cooling oil chamber in the counterclockwise direction, and vibrates counterclockwise in oily cavity circulation；Upper half way sprays into
The cooling oil of left-hand circular that enters with lower half way of cooling oil of right-hand circular converge in cooling oil chamber, from oil outlet
Outflow, takes away the heat of piston crown.When piston was run to the certain crank angle range period of middle position, cooling oil
The first fuel feed hole can neither be entered within a short period of time can not enter the second fuel feed hole, and the drop point of cooling oil is located at two at this time
Piston cavity top among fuel feed hole, cooling oil can wash away piston cavity top in this shorter time period, can both take away piston
The heat at top center position can play the role of lubricating piston pin hole and small end of connecting rod again, improve the reliability of piston.
Beneficial effects of the present invention:
1, the present invention band there are two fuel feed hole, an oil outlet and reverse circulation cooling oil chamber monoblock cast aluminum piston with
The cooling atomizer of engine tilts arrangement matches, and can effectively increase the loading of cooling oil in oil pocket, hence it is evident that reduces and lives
The operating temperature of plug head prevents piston because of failures such as scuffing of cylinder bore, the crackings of the excessively high appearance of thermic load, and guarantee engine operation can
By property；
2, piston of the invention is due to can be significantly reduced piston crown temperature, so as to reduce the life of burn soot
At optimizing the emission performance of engine；
3, piston structure of the invention, cooling oil can wash away inner cavity top, to the lubrication of small end of connecting rod and piston pin hole
It is beneficial, guarantee the use reliability of connecting rod and piston pin.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the cross-sectional view along the direction A-A of Fig. 1；
Fig. 3 is the cross-sectional view along the direction B-B of Fig. 1, and the middle position along piston fuel feed hole is splitted；
Fig. 4 is atomizer structural schematic diagram；
Fig. 5 is the operation schematic diagram that cooling oil inclination sprays into the first fuel feed hole and recycles along clockwise direction；
Fig. 6 is the operation schematic diagram that cooling oil inclination sprays into the second fuel feed hole and recycles in the counterclockwise direction.
Wherein, 1, piston, the 2, first fuel feed hole, the 3, second fuel feed hole, 4, oil outlet, 5, piston pin hole, 6, cooling oil chamber,
7, oily boss, 8, piston cavity top, 9, atomizer are kept off.
Specific embodiment
The present invention will be further described with embodiment with reference to the accompanying drawing.
As shown in Fig. 1, Fig. 2 and Fig. 3, a kind of piston with Two In and One Out reverse circulation cooling oil chamber, including be located at and live
It fills in the cyclic annular cooling oil chamber 6 in 1 head, the first fuel feed hole 2 positioned at 1 the same side of piston and the second fuel feed hole 3 and is located at the
The oil outlet 4 on 3 opposite of one fuel feed hole 2 and the second fuel feed hole；The ring-type cooling oil chamber 6 be located at the first fuel feed hole 2 and second into
It is provided on position between oilhole 3 for changing the gear oil boss 7 of cooling oil flow direction, the first fuel feed hole 2, the second fuel feed hole 3
It is communicated with the cyclic annular cooling oil chamber 6 with oil outlet 4.
First fuel feed hole 2 and the second fuel feed hole 3 are obliquely installed, and are matched with the atomizer 9 being obliquely installed.
Atomizer 9 is 5 ° to 15 ° relative to the tilt angle of vertical direction.
The piston 1 is by aluminium alloy casting and forming.
The manufacturing method of the piston with Two In and One Out reverse circulation cooling oil chamber, includes the following steps:
1, it extrudes with reeded special-shaped salt core, and is processed into the shape of setting；
2, Piston mould is manufactured, is processed in the internal model of mold for casting the first fuel feed hole 2,3 and of the second fuel feed hole
The protrusion of oil outlet 4；
3, single-piece piston blank casting is carried out；
4, milling riser carried out to 1 blank of piston, rush salt core and heat treatment；
5, roughing is carried out to piston 1, reaming is carried out to the first fuel feed hole 2, the second fuel feed hole 3 and oil outlet 4；
6, piston 1 is finished, obtains finished product.
The principle that the present invention works: piston 1 of the invention is the all-aluminium piston of monoblock cast, have in head one it is whole
The special-shaped cooling oil chamber 6 of the annular in week, cooling oil chamber 6 have the first fuel feed hole 2, the second fuel feed hole 3 and oil outlet 4, two oil inlets
There are the one and half gear oil boss 7 opened up among hole.One inclination one upwards of this piston structure and the installation of engine cylinder body bottom
The cooling oil atomizer 9 for determining angle matches, and the cooling oil and cylinder holes axis that cooling oil atomizer 9 sprays are in a fixed angle.
With the variation of crank angle, piston pumps in cylinder jacket, and piston 1 operates in the certain crankshaft of half trip on cylinder sleeve
When in the period of angle range, cooling oil inclination sprays into the first fuel feed hole 2, and suitable in the intermediate effect of gear oil boss 7 lower edge
Clockwise enters cooling oil chamber 6, while recycling oscillation in cooling oil chamber 6 in the direction of the clock；When piston 1 operates in cylinder sleeve
When in the period of the lower certain crank angle range of half trip, cooling oil still presses constant angle inclination and sprays into the second fuel feed hole 3,
And generated under the blocking for keeping off oily boss 7 catadioptric, enter cooling oil chamber 6 in the counterclockwise direction, and counterclockwise in oil pocket
Interior circulation oscillation；The cooling oil for the left-hand circular that the cooling oil for the right-hand circular that upper half way sprays into enters with lower half way is cold
But converge in oil pocket 6, flowed out from oil outlet 4, take away the heat of piston crown.Turn when piston is run to the certain crankshaft in middle position
When in the angular region period, cooling oil can neither enter the first fuel feed hole 2 within a short period of time can not enter the second fuel feed hole
3, the drop point of cooling oil is located at the piston cavity top 8 among two fuel feed holes at this time, and cooling oil can rush in this shorter time period
Brush piston cavity top 8 can not only take away the heat at 1 top center position of piston but also can play lubrication piston pin hole 5 and connecting rod
The effect of microcephaly improves the reliability of piston.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to invention protection scope
Limitation, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not required to
It is still within the scope of the present invention to make the creative labor the various modifications or changes that can be made.
Claims (5)
1. a kind of piston with Two In and One Out reverse circulation cooling oil chamber, it is characterised in that: including being located in piston crown
Cyclic annular cooling oil chamber, the first fuel feed hole positioned at piston the same side and the second fuel feed hole and be located at the first fuel feed hole and second into
The oil outlet on oilhole opposite；The ring-type cooling oil chamber is provided on the position between the first fuel feed hole and the second fuel feed hole
For changing the gear oil boss of cooling oil flow direction, the first fuel feed hole, the second fuel feed hole and oil outlet with the cyclic annular cooling oil
Chamber communicates；
The oily boss of the gear is partly to open up the oily boss of gear；
The inclination of cooling oil flow bean sprays into the first fuel feed hole, cooling oil under the action of the gear oily boss clockwise direction into
Enter cooling oil chamber, is vibrated along clockwise direction in cooling oil cavity circulation；Piston continues to run, and cooling oil sprays into the second oil inlet
Hole, and under the blocking for keeping off oily boss, enter cooling oil chamber in the counterclockwise direction, and follow in cooling oil chamber counterclockwise
Ring oscillation；The cooling oil of right-hand circular and the cooling oil of left-hand circular are converged, and flow out from oil outlet, take away piston crown
Heat；
When cooling oil can neither spray into the first fuel feed hole, can not spray into the second fuel feed hole, cooling oil is sprayed on the first fuel feed hole
And piston pin and small end of connecting rod are played while taking away piston cavity top heat in the second piston cavity top between fuel feed hole
The effect of lubrication；
First fuel feed hole and the second fuel feed hole are obliquely installed, the first fuel feed hole and the second fuel feed hole with the spray that is obliquely installed
Oil nozzle matches.
2. piston according to claim 1, it is characterised in that: the tilt angle of the atomizer remains unchanged.
3. piston according to claim 2, it is characterised in that: the atomizer is relative to the tilt angle of vertical direction
5°-15°。
4. piston according to claim 1, it is characterised in that: the piston is integrally formed.
5. piston according to claim 4, it is characterised in that: the piston is by aluminium alloy casting and forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378285.7A CN104948338B (en) | 2015-06-30 | 2015-06-30 | A kind of piston and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510378285.7A CN104948338B (en) | 2015-06-30 | 2015-06-30 | A kind of piston and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104948338A CN104948338A (en) | 2015-09-30 |
| CN104948338B true CN104948338B (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510378285.7A Active CN104948338B (en) | 2015-06-30 | 2015-06-30 | A kind of piston and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748434B (en) * | 2019-11-29 | 2024-08-30 | 滨州渤海活塞有限公司 | Petrol engine steel piston and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623891Y (en) * | 2003-05-21 | 2004-07-07 | 中国第一汽车集团公司 | Open type internal cooling oil duct of piston |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3713241A1 (en) * | 1986-12-24 | 1988-07-07 | Mahle Gmbh | AS A ROUGH MOLDED HEAD OF A TWO-PIECE PISTON |
| DE19929102A1 (en) * | 1999-06-24 | 2000-12-28 | Ks Kolbenschmidt Gmbh | Pistons for an internal combustion engine |
| KR20070054920A (en) * | 2005-11-24 | 2007-05-30 | 동양피스톤 주식회사 | piston |
| CN201081012Y (en) * | 2007-09-05 | 2008-07-02 | 山东滨州渤海活塞股份有限公司 | Special-shaped inner-cooling oil reservoir structure piston |
| CN202883146U (en) * | 2012-10-10 | 2013-04-17 | 河南省中原活塞股份有限公司 | All-steel piston cooling oil cylinder sealing device |
| CN204783308U (en) * | 2015-06-30 | 2015-11-18 | 山东滨州渤海活塞股份有限公司 | Piston with two advance a reverse circulative cooling oil pocket |
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2015
- 2015-06-30 CN CN201510378285.7A patent/CN104948338B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623891Y (en) * | 2003-05-21 | 2004-07-07 | 中国第一汽车集团公司 | Open type internal cooling oil duct of piston |
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| CN104948338A (en) | 2015-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181024 Address after: 256600 Bohai twenty-one Road, Binzhou, Shandong Province, No. 569 Applicant after: BINZHOU BOHAI PISTON CO., LTD. Address before: 256602 Bohai 21 Road, Binzhou, Shandong Province, No. 569 Applicant before: Bohai Piston Co., Ltd., Bingzhou City, Shandong Prov. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for preparing reverse cooling oil in and out of piston cavity Effective date of registration: 20210330 Granted publication date: 20181214 Pledgee: Binzhou branch of China CITIC Bank Co.,Ltd. Pledgor: BINZHOU BOHAI PISTON Co.,Ltd. Registration number: Y2021980002291 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220526 Granted publication date: 20181214 Pledgee: Binzhou branch of China CITIC Bank Co.,Ltd. Pledgor: BINZHOU BOHAI PISTON Co.,Ltd. Registration number: Y2021980002291 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |