CN204163872U - A kind of porous oil pocket all-steel piston - Google Patents
A kind of porous oil pocket all-steel piston Download PDFInfo
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- CN204163872U CN204163872U CN201420489478.0U CN201420489478U CN204163872U CN 204163872 U CN204163872 U CN 204163872U CN 201420489478 U CN201420489478 U CN 201420489478U CN 204163872 U CN204163872 U CN 204163872U
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Abstract
The utility model belongs to technical field of engines, relates to a kind of porous oil pocket all-steel piston.The porous oil pocket all-steel piston proposed includes: piston crown (1) and piston skirt (4); Described piston crown (1) includes: firing chamber (7), piston ring groove (3), porous oil pocket (8), annular oil cavity (9) and conical cavity (2); Described piston skirt (4) includes: piston pin hole (5), eccentric oil groove (10), guiding oil groove (11) and oil inlet hole (12), oil outlet (6).The beneficial effects of the utility model: the annular oil cavity of piston head design and porous oil pocket, more cold oil can not only be stored, piston is fully cooled, and can piston weight be alleviated, and then reduce the loss of diesel engine energy, improve the ability of diesel engine carrying heat load and mechanical load.
Description
Technical field
The utility model belongs to technical field of engines, relates to a kind of diesel engine all-steel piston, can be applied to the plunger designs of other high power, high density motor.
Background technique
Along with diesel engine is to the development in high power, high density, high strengthening direction, diesel engine will bear larger heat load and mechanical load, and the operating conditions of the strength member on diesel engine---piston also becomes more severe.Plunger designs on diesel engines at present mainly contains: the welding piston by electron beam of monoblock cast aluminium piston, cast aluminium skirt section, top wrought aluminium, the various ways such as steel top aluminium apron built-up piston and all-steel piston, although the intensity of piston is updated along with the increase of diesel engine explosion pressure, its ability carrying heat load and mechanical load is improved greatly, but too high temperature still can make piston expand, piston after expansion and cylinder liner gap smaller, piston head intensity reduces, cause the phenomenons such as piston appearance top is molten, hot tearing, also likely occur piston scraping.
For adapting to the higher detonation pressure that high power diesel engine produces, also there is the application of all-steel piston in market, but the full aluminium recovery of all-steel piston weight ratio of same size is almost twice, cause diesel engine starting difficulty and energy loss excessive, affect the overall performance of diesel engine, and common all-steel piston cooling oil chamber is general less, can not meet the cooling requirement of piston when detonation pressure is very high.Therefore, under the condition meeting piston intensity, need to be further improved design to the structure of piston cooling oil chamber.
Model utility content
The utility model proposes a kind of porous oil pocket all-steel piston, to solve the deficiencies such as all-steel piston weight is large, cooling oil chamber is little, improve the ability of diesel engine carrying heat load and mechanical load.
The utility model adopts following technical proposals to complete its invention task:
A kind of porous oil pocket all-steel piston, includes: piston crown and piston skirt; Described piston crown and piston skirt all adopt 42CrMo4V material to make, and are connected by friction welding; Described piston crown includes: firing chamber, piston ring groove, porous oil pocket, annular oil cavity and conical cavity; Described firing chamber is arranged in groove inside in the middle of piston head; Described piston ring groove is arranged on the periphery of piston crown, and wherein twice are compression, is oil ring groove together; Described porous oil pocket has 28, is evenly distributed between chamber wall and piston ring groove, and the aperture of described porous oil pocket is 10mm, communicates with annular oil cavity; The setting of porous oil pocket alleviates piston weight meeting under piston strength condition; Described annular oil cavity is arranged around piston ring groove; Described conical cavity is arranged on neutral position, piston crown lower end surface, and main purpose is weight reduction; Described piston skirt includes: piston pin hole, eccentric oil groove, guiding oil groove and oil inlet hole, oil outlet; Described piston pin hole is a round tube hole, and center is vertical with piston axes; Described eccentric oil groove is the semicircle oil groove departing from certain distance with piston pin hole center in the horizontal direction, communicates with oil inlet hole, oil outlet; Described guiding oil groove is arranged in along piston pin hole axial direction, communicates with eccentric oil groove; Described oil inlet hole, oil outlet are arranged in the both sides of piston pin hole, along piston axes direction and annular oil cavity through.
The beneficial effects of the utility model: whole piston adopts Alloy Constructional Steel, improves the utmost carrying ability of piston, and then improve the reliability of diesel engine work; The annular oil cavity of piston head design and porous oil pocket, can not only store more cold oil, piston is fully cooled, and can alleviate piston weight, and then reduce the loss of diesel engine energy, improves the ability of diesel engine carrying heat load and mechanical load.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, piston crown; 2, conical cavity; 3, piston ring groove; 4, piston skirt; 5, piston pin hole; 6, oil outlet; 7, firing chamber; 8, porous oil pocket; 9, annular oil cavity; 10, eccentric oil groove; 11, lead oil groove; 12, oil inlet hole.
Embodiment
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings.
As shown in Figure 1, a kind of porous oil pocket all-steel piston, includes: piston crown 1 and piston skirt 4; Described piston crown 1 comprises: firing chamber 7, piston ring groove 3, porous oil pocket 8, annular oil cavity 9 and conical cavity 2; Described firing chamber 7 is arranged in groove inside in the middle of piston head; Described piston ring groove 3 is arranged on piston crown periphery, and twice are compression, is oil ring groove together; Described porous oil pocket 8 has 28, is evenly distributed between chamber wall and piston ring groove, and the aperture of porous oil pocket 8 is 10mm, communicates with annular oil cavity 9, and the setting of porous oil pocket 8 alleviates piston weight meeting under piston strength condition; Described annular oil cavity 9 is arranged around piston ring groove 3; Described conical cavity 2 is arranged on neutral position, piston crown lower end surface, and main purpose is weight reduction.Described piston skirt 4 comprises: piston pin hole 5, eccentric oil groove 10, guiding oil groove 11 and oil inlet hole 12, oil outlet 6; Described piston pin hole 5 is a round tube hole, and center is vertical with piston axes; Described eccentric oil groove 10 is the semicircle oil groove departing from certain distance with piston pin hole center in the horizontal direction, communicates with oil inlet hole 12, oil outlet 6; Described guiding oil groove 11 is arranged in along piston pin hole axial direction, communicates with eccentric oil groove 10; Described oil inlet hole 12, oil outlet 6 are arranged in the both sides of piston pin hole, along piston axes direction and annular oil cavity through.
A kind of its cooling principle of porous oil pocket all-steel piston described in the utility model is: when diesel engine works, the cold oil entering piston is divided into two-part, a part enters eccentric oil groove 10 by oil inlet hole 12, whole piston pin hole is flowed into, the wrist pin of sufficient lubrication Spielpassung with it along guiding oil groove 11; Another part is by piston crown annular oil cavity 9 and porous oil pocket 8, and in annular oil cavity 9 and porous oil pocket 8, concussion flowing, is flowed out by oil outlet 6, taken away by piston crown heat, reach good cooling effect; Wherein, porous oil pocket mainly reduces the effect of edge of combustion chamber and piston ring groove position heat load, ensures the functional reliability of piston and piston ring.
Claims (1)
1. a porous oil pocket all-steel piston, is characterized in that: described piston includes: piston crown (1) and piston skirt (4); Described piston crown (1) includes: firing chamber (7), piston ring groove (3), porous oil pocket (8), annular oil cavity (9) and conical cavity (2); Described firing chamber (7) is arranged in groove inside in the middle of piston head; Described piston ring groove (3) is arranged on the periphery of piston crown, and wherein twice are compression, is oil ring groove together; Described porous oil pocket (8) has 28, is evenly distributed between chamber wall and piston ring groove, and the aperture of described porous oil pocket (8) is 10mm, communicates with annular oil cavity (9); Described annular oil cavity (9) is arranged around piston ring groove (3); Described conical cavity (2) is arranged on neutral position, piston crown lower end surface; Described piston skirt (4) includes: piston pin hole (5), eccentric oil groove (10), guiding oil groove (11) and oil inlet hole (12), oil outlet (6); Described piston pin hole (5) is a round tube hole, and center is vertical with piston axes; Described eccentric oil groove (10) is the semicircle oil groove departing from certain distance with piston pin hole center in the horizontal direction, communicates with oil inlet hole (12), oil outlet (6); Described guiding oil groove (11) is arranged in along piston pin hole axial direction, communicates with eccentric oil groove (10); Described oil inlet hole (12), oil outlet (6) are arranged in the both sides of piston pin hole (5), along piston axes direction and annular oil cavity (9) through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489478.0U CN204163872U (en) | 2014-08-28 | 2014-08-28 | A kind of porous oil pocket all-steel piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489478.0U CN204163872U (en) | 2014-08-28 | 2014-08-28 | A kind of porous oil pocket all-steel piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204163872U true CN204163872U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420489478.0U Expired - Fee Related CN204163872U (en) | 2014-08-28 | 2014-08-28 | A kind of porous oil pocket all-steel piston |
Country Status (1)
| Country | Link |
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| CN (1) | CN204163872U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999717A (en) * | 2018-08-15 | 2018-12-14 | 全椒县全动机械有限公司 | A kind of diesel engine piston structure |
| CN109236486A (en) * | 2018-11-02 | 2019-01-18 | 滨州渤海活塞有限公司 | Internal combustion engine novel steel pistons and internal combustion engine |
| CN110145406A (en) * | 2019-05-23 | 2019-08-20 | 广州柴油机厂股份有限公司 | A kind of gas engine piston oscillation cooling structure |
| CN110748434A (en) * | 2019-11-29 | 2020-02-04 | 滨州渤海活塞有限公司 | Steel piston of gasoline engine and manufacturing method thereof |
-
2014
- 2014-08-28 CN CN201420489478.0U patent/CN204163872U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999717A (en) * | 2018-08-15 | 2018-12-14 | 全椒县全动机械有限公司 | A kind of diesel engine piston structure |
| CN109236486A (en) * | 2018-11-02 | 2019-01-18 | 滨州渤海活塞有限公司 | Internal combustion engine novel steel pistons and internal combustion engine |
| CN110145406A (en) * | 2019-05-23 | 2019-08-20 | 广州柴油机厂股份有限公司 | A kind of gas engine piston oscillation cooling structure |
| CN110145406B (en) * | 2019-05-23 | 2024-05-17 | 广州柴油机厂股份有限公司 | Piston oscillation cooling structure of internal combustion engine |
| CN110748434A (en) * | 2019-11-29 | 2020-02-04 | 滨州渤海活塞有限公司 | Steel piston of gasoline engine and manufacturing method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20200828 |