CN203515848U - Engine piston - Google Patents
Engine piston Download PDFInfo
- Publication number
- CN203515848U CN203515848U CN201320617908.8U CN201320617908U CN203515848U CN 203515848 U CN203515848 U CN 203515848U CN 201320617908 U CN201320617908 U CN 201320617908U CN 203515848 U CN203515848 U CN 203515848U
- Authority
- CN
- China
- Prior art keywords
- piston
- cooling passage
- oil cooling
- hole
- key seat
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 239000004519 grease Substances 0.000 claims description 16
- 239000003921 oil Substances 0.000 abstract description 36
- 238000005461 lubrication Methods 0.000 abstract description 14
- 239000010687 lubricating oil Substances 0.000 abstract description 2
- 210000000707 wrist Anatomy 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses an engine piston which comprises a piston body. The piston body comprises a piston head and a piston skirt, wherein an inner-cooling oil channel is formed in the piston head, an inner-cooling oil channel feed hole and an inner-cooling oil channel oil return hole are formed in the inner-cooling oil channel, the piston skirt is provided with a piston pin hole, a plurality of pin seat lubrication oil channels are formed in the piston body, and the pin seat lubricating oil channels are communicated with the inner-cooling oil channel and the piston pin hole. According to the engine piston, forced lubrication is provided for the piston pin hole, the instability of splash lubrication can be overcome effectively, and the reliability of lubrication can be improved.
Description
Technical field
The utility model relates to technical field of engines, especially relates to a kind of engine piston.
Background technique
Piston is one of vitals of motor, and piston is divided into cast-iron piston, steel pistons, all-aluminium piston and combined piston by material, and wherein, piston comprises piston crown and piston skirt, the general mode that adopts friction welding between piston crown and piston skirt.Motor is in when work, between piston pin hole and wrist pin between and between connecting rod and wrist pin, all need to be lubricated.As shown in Figure 1, be the technological scheme of existing solution pin bore lubrication, piston comprises piston only 1, firing chamber 2, interior oil cooling passage 3, piston cavity 4, oilhole 5 penetrates into piston cavity 4 from interior oil cooling passage 3.Lubricant oil arrives the upper surface of connecting rod 6 and the outer surfaces of wrist pin 7 from interior oil cooling passage 3 oilhole 5 and the piston cavity 4 of flowing through, then the pump-absorb action that produces of move in pin-and-hole by wrist pin 7 is by the pin-and-hole aperture lubricant oil suction lubricate around of flowing through.In the piston of above structure, what lube pistons pin-and-hole adopted is splash lubrication, and lubricating oil splash, around pin-and-hole, utilizes the pump between piston pin hole and wrist pin to inhale, and lubricant oil is introduced in pin-and-hole to lubricated pin-and-hole.The shortcoming of this technology is: the oil mass of splashing is unstable, and lubrication oil mass is difficult to guarantee, in the higher situation of the heat load of piston, lubrication oil mass can not meet the demands, and easily causes wrist pin and pin-and-hole locking.
Model utility content
Technical problem to be solved in the utility model is: a kind of engine piston is provided, for piston pin hole provides pressure lubrication, can effectively solves the unstability of splash lubrication, improve lubricated reliability.
For solving the problems of the technologies described above, the technical solution of the utility model is: engine piston, comprise piston only, described piston only comprises piston crown and piston skirt, described piston crown is provided with interior oil cooling passage, and described interior oil cooling passage has interior oil cooling passage oil inlet hole and interior oil cooling passage spill port, and described piston skirt is provided with piston pin hole, described piston only is provided with some key seat grease channels, and described key seat grease channel is communicated with described interior oil cooling passage and piston pin hole.
Preferably, described key seat grease channel has four and to take the axis of described piston be center of circle annular arrangement, and described in each, key seat grease channel all extends axially along described piston.
Adopted technique scheme, the beneficial effects of the utility model are: because piston piston only is provided with some key seat grease channels, oil cooling passage and piston pin hole in key seat grease channel is communicated with, the flow direction of guiding lubricant oil, for piston pin hole provides pressure lubrication, the unstability that can effectively solve splash lubrication, improves lubricated reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of engine piston in prior art;
Fig. 2 is the utility model embodiment's structural representation;
Fig. 3 is the plan view of Fig. 2;
Wherein: 1, piston only; 2, firing chamber; 3, interior oil cooling passage; 4, piston cavity; 5, oilhole; 6, connecting rod; 7, wrist pin; 8, piston crown; 9, piston skirt; 10, key seat grease channel; 31, interior oil cooling passage oil inlet hole; 32, interior oil cooling passage spill port; 91, piston pin hole.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Fig. 2 and Fig. 3 are common, engine piston, comprise piston only 1, piston only 1 comprises piston crown 8 and piston skirt 9, piston crown 8 is provided with interior oil cooling passage 3, and interior oil cooling passage 3 has interior oil cooling passage oil inlet hole 31 and interior oil cooling passage spill port 32, and piston skirt 9 is provided with piston pin hole 91, piston only 1 is provided with some key seat grease channels 10, oil cooling passage 3 and piston pin hole 91 in key seat grease channel 10 is communicated with.
In the present embodiment, key seat grease channel 10 has four and to take the axis of piston only 1 be center of circle annular arrangement, and each key seat grease channel 10 all extends axially along piston only 1.
In the utility model, oil cooling passage 3 and piston pin hole 91 in key seat grease channel 10 is communicated with, the flow direction of guiding lubricant oil, for piston pin hole 91 provides pressure lubrication, can effectively solve the unstability of splash lubrication, improves lubricated reliability.
The utility model is not limited to above-mentioned concrete mode of execution, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection domain of the present utility model.
Claims (2)
1. engine piston, comprise piston only, described piston only comprises piston crown and piston skirt, described piston crown is provided with interior oil cooling passage, described interior oil cooling passage has interior oil cooling passage oil inlet hole and interior oil cooling passage spill port, and described piston skirt is provided with piston pin hole, it is characterized in that, described piston only is provided with some key seat grease channels, and described key seat grease channel is communicated with described interior oil cooling passage and piston pin hole.
2. engine piston as claimed in claim 1, is characterized in that, described key seat grease channel has four and to take the axis of described piston be center of circle annular arrangement, and described in each, key seat grease channel all extends axially along described piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617908.8U CN203515848U (en) | 2013-10-08 | 2013-10-08 | Engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320617908.8U CN203515848U (en) | 2013-10-08 | 2013-10-08 | Engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515848U true CN203515848U (en) | 2014-04-02 |
Family
ID=50374789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320617908.8U Expired - Lifetime CN203515848U (en) | 2013-10-08 | 2013-10-08 | Engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515848U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026427A (en) * | 2018-09-30 | 2018-12-18 | 滨州学院 | Novel forging steel piston |
| 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 |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
| CN113236435A (en) * | 2021-05-19 | 2021-08-10 | 中内凯思汽车新动力系统有限公司 | High-performance friction welding cast iron piston and preparation method thereof |
-
2013
- 2013-10-08 CN CN201320617908.8U patent/CN203515848U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026427A (en) * | 2018-09-30 | 2018-12-18 | 滨州学院 | Novel forging steel piston |
| CN109026427B (en) * | 2018-09-30 | 2020-10-20 | 滨州学院 | Forged steel piston |
| 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 |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
| CN113236435A (en) * | 2021-05-19 | 2021-08-10 | 中内凯思汽车新动力系统有限公司 | High-performance friction welding cast iron piston and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |