CN204783308U - Piston with two advance a reverse circulative cooling oil pocket - Google Patents
Piston with two advance a reverse circulative cooling oil pocket Download PDFInfo
- Publication number
- CN204783308U CN204783308U CN201520460180.1U CN201520460180U CN204783308U CN 204783308 U CN204783308 U CN 204783308U CN 201520460180 U CN201520460180 U CN 201520460180U CN 204783308 U CN204783308 U CN 204783308U
- Authority
- CN
- China
- Prior art keywords
- oil
- piston
- inlet hole
- oil inlet
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a piston with two advance a reverse circulative cooling oil pocket, cyclic annular cool off the oil pocket, lie in the piston with the first inlet port and the second inlet port of one side and lie in first inlet port and the opposed oil outlet of second inlet port including what lie in the piston crown, cyclic annular cooling oil pocket lies in to be provided with on the position between first inlet port and the second inlet port and is used for changing the obstacle that the coolant oil flowed into, first inlet port, second inlet port and oil outlet all with cyclic annular cooling oil pocket communicates with each other. The utility model discloses the cooling fuel sprayer phase -match that the the whole cast aluminium piston and the engine slope that have two inlet ports, an oil outlet and a reverse circulative cooling oil pocket were arranged can effectively increase the loading of oil pocket internal cooling oil, obviously reduces the operating temperature of piston crown, prevents that the piston from because of troubles such as the scuffing of cylinder bore of the too high appearance of heating load, fractures, guaranteeing the reliability of engine work.
Description
Technical field
The utility model relates to internal combustion engine technical field, particularly relates to a kind ofly to have two and enter the piston that goes out reverse circulation cooling oil chamber.
Background technique
Along with the progress of internal-combustion engine technology and the continuous upgrading of emission level, medium and heavy motor is always at the future development to high power density, high pressure of explosion, and engine operating temperature improves constantly.Piston is as the core component in motor, and the heat load of bearing is more and more higher.And heat load is one of main factor causing piston failure.Reduce pistons work heat load and become internal-combustion engine industry research staff issues that need special attention in recent years.The common cooling oil chamber concussion loop structure of original conventional aluminum alloys piston matches with motor cooling spray oil nozzle vertically upward, because oil spout reflection seriously causes cold oil oil-feed inefficiency, inner-cooling oil recess oil mass lack of fill, cause piston to be difficult to bear higher heat load, the requirement of engine high power, high strengthening and low emission can not be met.Also the structure adopting the overall aluminium recovery of open type oil inlet hole one-way circulation inner-cooling oil recess to match with engine tilts cooling spray oil nozzle is had, this piston technique is relatively simple, but when open type cooling oil chamber mates with inclined cooling plate oil nozzle, for ensureing sufficiently long oil-feed time and abundant oil inlet quantity, just need by the opening of open type oil inlet hole design very long, when oil inlet hole opening is long, because the cold oil sprayed in hole reflects, also oil-feed efficiency can be affected, Opening length and oil spout refractive index restrict mutually, are difficult to the filling ensureing oil mass in cooling oil chamber.
Model utility content
The purpose of this utility model is exactly to solve prior art Problems existing, there is provided a kind of to have two and enter the piston that goes out reverse circulation cooling oil chamber, this piston and the engine cooling oil nozzle be in tilted layout match, reflection and the refraction of cold oil can be greatly reduced, oil-feed efficiency significantly improves, inner-cooling oil recess oil mass is filled sufficient, and the reverse cycle of oscillation of cold oil is more conducive to the exchange of piston crown heat and takes away, obvious to the effect of reduction piston heat load.Solid piston adopts aluminum alloy cast form, cooling oil chamber and turnover oilhole coordinate cast form by the special-shaped salt core of special shape with Piston mould, and technique is simple, and piston cooling effect is better, be conducive to the operating temperature reducing piston, improve the reliability that piston uses.
To achieve these goals, the utility model adopts following technological scheme:
Have two and enter the piston that goes out reverse circulation cooling oil chamber, comprise the ring-type cooling oil chamber being positioned at piston crown, the first oil inlet hole being positioned at piston the same side and the second oil inlet hole and be positioned at the oil outlet on the first oil inlet hole and the second oil inlet hole opposite; The position of described ring-type cooling oil chamber between the first oil inlet hole and the second oil inlet hole is provided with the obstacle flowed to for changing cold oil, the first oil inlet hole, the second oil inlet hole and oil outlet all communicate with described ring-type cooling oil chamber.
Preferably, described obstacle is the oily boss of gear.
Preferably, described first oil inlet hole and the second oil inlet hole are obliquely installed, and all match with the oil nozzle be obliquely installed.
Preferably, the angle of inclination of described oil nozzle remains unchanged.
Preferably, described oil nozzle is 5-15 ° relative to the angle of inclination of vertical direction.
Preferably, described piston is one-body molded.
Preferably, described piston is by aluminum alloy casting.
Preferably, cold oil flow bean tilts to spray into the first oil inlet hole, and cold oil enters cooling oil chamber in the clockwise under influence direction of the oily boss of described gear, vibrates along clockwise direction at cooling oil chamber Inner eycle; Piston continues to run, and cold oil sprays into the second oil inlet hole, and under the stop of the oily boss of gear, enters cooling oil chamber in the counterclockwise direction, and by counterclockwise vibrating at cooling oil chamber Inner eycle; The cold oil of right-hand circular and the cold oil of left-hand circular converge, and flow out, take away the heat of piston crown from oil outlet.
Preferably, when cold oil can not spray into the first oil inlet hole, when can not spray into the second oil inlet hole, cold oil is sprayed on the piston cavity top between the first oil inlet hole and the second oil inlet hole, while taking away piston cavity top heat, wrist pin and connecting rod small end are played to the effect of lubrication.
Described have two and enter the manufacture method that goes out the piston of reverse circulation cooling oil chamber, comprises the steps:
1, extrude the reeded special-shaped salt core of band, and be processed into the shape of setting;
2, manufacture Piston mould, the internal mold of mould processes the projection for casting the first oil inlet hole, the second oil inlet hole and oil outlet;
3, solid piston blank casting;
4, milling rising head 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 oil inlet hole, the second oil inlet hole and oil outlet;
6, fine finishing is carried out to piston, obtain finished product.
The principle of utility model works: piston of the present utility model is cast-in-block all-aluminium piston, with the annular abnormity cooling oil chamber of a complete cycle in head, cooling oil chamber with the first oil inlet hole, the second oil inlet hole and oil outlet, the gear oil boss having one and half to open up in the middle of two oil inlet holes.The cold oil oil nozzle of the several angle that is inclined upwardly installed bottom this piston structure and engine cylinder-body matches, and cold oil and the cylinder holes axis of the ejection of cold oil oil nozzle are a fixed angle.Along with the change of crank angle, piston pumps in cylinder liner, when piston operated in the time period of the certain crank angle range of half trip on cylinder sleeve, cold oil tilts to spray into the first oil inlet hole, and enter cooling oil chamber along clockwise direction under gear oil boss effect in centre, vibrate at oil pocket Inner eycle in the direction of the clock simultaneously; When in the time period that piston operates in the certain crank angle range of half trip under cylinder sleeve, cold oil still tilts to spray into the second oil inlet hole by constant angle, and produce catadioptric under the stop of the oily boss of gear, enter cooling oil chamber in the counterclockwise direction, and by counterclockwise vibrating at oil pocket Inner eycle; The cold oil of the left-hand circular that the cold oil of the right-hand circular that upper half way sprays into and lower half way enter converges in cooling oil chamber, flows out, take away the heat of piston crown from oil outlet.When piston moved in the certain crank angle range time period of neutral position, cold oil can not enter the first oil inlet hole and can not enter the second oil inlet hole within a short period of time, now the drop point of cold oil is positioned at the piston cavity top in the middle of two oil inlet holes, in this short period section, cold oil can wash away piston cavity top, not only can take away the heat of piston head intermediate portion but also the effect of lube pistons pin-and-hole and connecting rod small end can be played, improve the reliability of piston.
The beneficial effects of the utility model:
1, the cooling spray oil nozzle that the utility model is arranged with cast inblock aluminium recovery and the engine tilts of two oil inlet holes, an oil outlet and reverse circulation cooling oil chamber matches, effectively can increase the loading of cold oil in oil pocket, the operating temperature of obvious reduction piston crown, prevent piston because of the fault such as scuffing of cylinder bore, cracking of the too high appearance of heat load, ensure the reliability of engine operation;
2, piston of the present utility model is owing to can significantly reduce piston crown temperature, thus can reduce the generation of burn soot, optimizes the emission performance of motor;
3, piston structure of the present utility model, cold oil can wash away inner cavity top, is beneficial to the lubrication of connecting rod small end and piston pin hole, ensures the operational safety of connecting rod and wrist pin.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view in the A-A direction along Fig. 1;
Fig. 3 is the sectional view in the B-B direction along Fig. 1, and the neutral position along piston oil inlet hole is cut open;
Fig. 4 is oil nozzle structural representation;
Fig. 5 is that cold oil tilts to spray into the first oil inlet hole and the operating diagram circulated along clockwise direction;
Fig. 6 is that cold oil tilts to spray into the second oil inlet hole and the operating diagram circulated in the counterclockwise direction.
Wherein, 1, piston, the 2, first oil inlet hole, the 3, second oil inlet hole, 4, oil outlet, 5, piston pin hole, 6, cooling oil chamber, 7, keep off oily boss, 8, piston cavity top, 9, oil nozzle.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further.
Shown in Fig. 1, Fig. 2 and Fig. 3, have two and enter the piston that goes out reverse circulation cooling oil chamber, comprise the ring-type cooling oil chamber 6 being positioned at piston 1 head, the first oil inlet hole 2 being positioned at piston 1 the same side and the second oil inlet hole 3 and be positioned at the oil outlet 4 on the first oil inlet hole 2 and the second oil inlet hole 3 opposite; Gear oil boss 7, first oil inlet hole 2, second oil inlet hole 3 and oil outlet 4 position of described ring-type cooling oil chamber 6 between the first oil inlet hole 2 and the second oil inlet hole 3 is provided with for changing the cold oil flow direction all communicates with described ring-type cooling oil chamber 6.
Described first oil inlet hole 2 and the second oil inlet hole 3 are obliquely installed, and all match with the oil nozzle 9 be obliquely installed.
Oil nozzle 9 is 5 ° to 15 ° relative to the angle of inclination of vertical direction.
Described piston 1 is by aluminum alloy casting.
Described have two and enter the manufacture method that goes out the piston of reverse circulation cooling oil chamber, comprises the steps:
1, extrude the reeded special-shaped salt core of band, and be processed into the shape of setting;
2, manufacture Piston mould, the internal mold of mould processes the projection for casting the first oil inlet hole 2, second oil inlet hole 3 and oil outlet 4;
3, solid piston blank casting is carried out;
4, piston 1 blank is carried out to milling rising head, rushes salt core and heat treatment;
5, roughing is carried out to piston 1, reaming is carried out to the first oil inlet hole 2, second oil inlet hole 3 and oil outlet 4;
6, fine finishing is carried out to piston 1, obtain finished product.
The principle of utility model works: piston 1 of the present utility model is cast-in-block all-aluminium piston, with the annular abnormity cooling oil chamber 6 of a complete cycle in head, cooling oil chamber 6 is with the gear oil boss 7 having one and half to open up in the middle of the first oil inlet hole 2, second oil inlet hole 3 and oil outlet 4, two oil inlet holes.The cold oil oil nozzle 9 of the several angle that is inclined upwardly installed bottom this piston structure and engine cylinder-body matches, and the cold oil that cold oil oil nozzle 9 sprays and cylinder holes axis are a fixed angle.Along with the change of crank angle, piston pumps in cylinder liner, when piston 1 operated in the time period of the certain crank angle range of half trip on cylinder sleeve, cold oil tilts to spray into the first oil inlet hole 2, and the gear oil boss 7 in centre enters cooling oil chamber 6 under acting on along clockwise direction, vibrates in the direction of the clock at cooling oil chamber 6 Inner eycle simultaneously; When in the time period that piston 1 operates in the certain crank angle range of half trip under cylinder sleeve, cold oil still tilts to spray into the second oil inlet hole 3 by constant angle, and produce catadioptric under the stop of the oily boss 7 of gear, enter cooling oil chamber 6 in the counterclockwise direction, and by counterclockwise vibrating at oil pocket Inner eycle; The cold oil of the left-hand circular that the cold oil of the right-hand circular that upper half way sprays into and lower half way enter converges in cooling oil chamber 6, flows out, take away the heat of piston crown from oil outlet 4.When piston moved in the certain crank angle range time period of neutral position, cold oil can not enter the first oil inlet hole 2 and can not enter the second oil inlet hole 3 within a short period of time, now the drop point of cold oil is positioned at the piston cavity top 8 in the middle of two oil inlet holes, in this short period section, cold oil can wash away piston cavity top 8, not only can take away the heat at piston 1 crown center position but also lube pistons pin-and-hole 5 and the effect of connecting rod small end can be played, improve the reliability of piston.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to utility model protection scope; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection domain of the present utility model.
Claims (9)
1. have two and enter the piston that goes out reverse circulation cooling oil chamber, it is characterized in that: comprise the ring-type cooling oil chamber being positioned at piston crown, the first oil inlet hole being positioned at piston the same side and the second oil inlet hole and be positioned at the oil outlet on the first oil inlet hole and the second oil inlet hole opposite; The position of described ring-type cooling oil chamber between the first oil inlet hole and the second oil inlet hole is provided with the obstacle flowed to for changing cold oil, the first oil inlet hole, the second oil inlet hole and oil outlet all communicate with described ring-type cooling oil chamber.
2. piston according to claim 1, is characterized in that: described obstacle is the oily boss of gear.
3. piston according to claim 1, is characterized in that: described first oil inlet hole and the second oil inlet hole are obliquely installed, and the first oil inlet hole and the second oil inlet hole all match with the oil nozzle be obliquely installed.
4. piston according to claim 3, is characterized in that: the angle of inclination of described oil nozzle remains unchanged.
5. piston according to claim 4, is characterized in that: described oil nozzle is 5-15 ° relative to the angle of inclination of vertical direction.
6. piston according to claim 1, is characterized in that: described piston is one-body molded.
7. piston according to claim 6, is characterized in that: described piston is by aluminum alloy casting.
8. piston according to claim 2, is characterized in that: cold oil flow bean tilts to spray into the first oil inlet hole, and cold oil enters cooling oil chamber in the clockwise under influence direction of the oily boss of described gear, vibrates along clockwise direction at cooling oil chamber Inner eycle; Piston continues to run, and cold oil sprays into the second oil inlet hole, and under the stop of the oily boss of gear, enters cooling oil chamber in the counterclockwise direction, and by counterclockwise vibrating at cooling oil chamber Inner eycle; The cold oil of right-hand circular and the cold oil of left-hand circular converge, and flow out, take away the heat of piston crown from oil outlet.
9. piston according to claim 8, it is characterized in that: when cold oil can not spray into the first oil inlet hole, when can not spray into the second oil inlet hole, cold oil is sprayed on the piston cavity top between the first oil inlet hole and the second oil inlet hole, while taking away piston cavity top heat, wrist pin and connecting rod small end are played to the effect of lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520460180.1U CN204783308U (en) | 2015-06-30 | 2015-06-30 | Piston with two advance a reverse circulative cooling oil pocket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520460180.1U CN204783308U (en) | 2015-06-30 | 2015-06-30 | Piston with two advance a reverse circulative cooling oil pocket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783308U true CN204783308U (en) | 2015-11-18 |
Family
ID=54523371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520460180.1U Expired - Fee Related CN204783308U (en) | 2015-06-30 | 2015-06-30 | Piston with two advance a reverse circulative cooling oil pocket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783308U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948338A (en) * | 2015-06-30 | 2015-09-30 | 山东滨州渤海活塞股份有限公司 | Piston with two-in-one-out reverse circulating cooling oil cavity and manufacturing method thereof |
| CN109790790A (en) * | 2016-09-21 | 2019-05-21 | 五十铃自动车株式会社 | The piston temperature condition monitoring system of internal combustion engine and the piston temperature of internal combustion engine monitor method |
-
2015
- 2015-06-30 CN CN201520460180.1U patent/CN204783308U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948338A (en) * | 2015-06-30 | 2015-09-30 | 山东滨州渤海活塞股份有限公司 | Piston with two-in-one-out reverse circulating cooling oil cavity and manufacturing method thereof |
| CN109790790A (en) * | 2016-09-21 | 2019-05-21 | 五十铃自动车株式会社 | The piston temperature condition monitoring system of internal combustion engine and the piston temperature of internal combustion engine monitor method |
| CN109790790B (en) * | 2016-09-21 | 2021-12-28 | 五十铃自动车株式会社 | Piston temperature state monitoring system and monitoring method for internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102733947B (en) | Contraposition two-stroke engine | |
| CN106837586A (en) | lubricating loop and forming method | |
| CN102155325B (en) | Cast piston with pin bore lubrication and method of manufacturing same | |
| CN204783308U (en) | Piston with two advance a reverse circulative cooling oil pocket | |
| CN102536494A (en) | Cooling water jacket structure of diesel engine cylinder body | |
| CN105089842B (en) | A kind of cylinder cap of single-cylinder diesel engine and its processing method with cylinder barrel | |
| CN202220674U (en) | Cooling lubricating structure for a reciprocating piston type internal combustion engine piston connection rod | |
| CN104948338B (en) | A kind of piston and preparation method thereof with Two In and One Out reverse circulation cooling oil chamber | |
| CN207018098U (en) | Assembled two-layer cylinder head jacket | |
| CN203764902U (en) | Casting mold for solid cam shaft | |
| CN202081951U (en) | Oil cooling system used for cooling four-stroke engine | |
| CN206779386U (en) | Casting mold for oil pan of automobile engine | |
| CN209115215U (en) | A kind of outer oil return mechanism of combination oil return groove structure | |
| CN202811103U (en) | Cylinder cover with water sleeve | |
| CN102852665B (en) | Cylinder cover with water sleeve | |
| CN2934599Y (en) | Diesel engine | |
| CN210848209U (en) | Wax mould of balance block pouring system | |
| CN205908329U (en) | High -efficient lubricating system of single cylinder air -cooled diesel engine | |
| CN204321138U (en) | The quick cooling die of a kind of gravitational casting aluminium recovery | |
| CN2623891Y (en) | Open type internal cooling oil duct of piston | |
| CN215213704U (en) | Internal combustion engine piston with flow guiding structure | |
| CN206972392U (en) | A kind of engine piston and engine | |
| CN202611903U (en) | Diesel engine cylinder block cooling water jacket structure | |
| CN209189747U (en) | A kind of special-shaped salt core for piston | |
| CN113309627B (en) | Novel integral aluminum piston assembly for internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |