CN211975185U - Piston beneficial to cold start and wear reduction - Google Patents
Piston beneficial to cold start and wear reduction Download PDFInfo
- Publication number
- CN211975185U CN211975185U CN202020229635.XU CN202020229635U CN211975185U CN 211975185 U CN211975185 U CN 211975185U CN 202020229635 U CN202020229635 U CN 202020229635U CN 211975185 U CN211975185 U CN 211975185U
- Authority
- CN
- China
- Prior art keywords
- piston
- oil
- leak protection
- protection portion
- cold start
- 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
Images
Abstract
The utility model discloses a be favorable to piston of cold start antifriction, it includes: piston top, piston leak protection portion and piston skirt portion, the piston top sets up seals on the upper portion of piston leak protection portion, piston skirt portion sets up the below in piston leak protection portion, be provided with the oil ring groove on the piston leak protection portion excircle, piston leak protection portion inner wall evagination is provided with the ring body that is located oil ring groove position below, the ring body hole is provided with the cofferdam that the round upwards extends, cofferdam, ring body and piston leak protection portion enclose into annular oil storage tank, be provided with the oil gallery that extends to in the oil storage tank in the oil ring groove. Be favorable to piston of cold start antifriction, during the engine cold start, the lubricating oil in the oil storage tank gets into the cylinder body through the oil gallery very first time, forms the oil film at the cylinder body inner wall through the effect of piston ring, has reduced the wearing and tearing problem of piston with the cylinder body inner wall.
Description
Technical Field
The utility model relates to a piston technical field especially relates to a piston that is favorable to cold start antifriction.
Background
The automobile piston is used for bearing gas pressure in an automobile engine, a connecting rod is driven by a piston pin to drive a crankshaft to rotate, and the top of the piston is also a component of a combustion chamber, so that the automobile piston occupies an extremely important position when the engine runs.
The aluminum alloy piston is light in weight, beneficial to reducing the energy consumption of an engine, and wide in application range, but when the engine is started in a cold state, the lubricating oil is poor in fluidity, so that the lubricating oil is difficult to fully reach the inner wall of the cylinder body to form an oil film, the abrasion between the piston and the inner wall of the cylinder body is increased, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be favorable to cold start antifriction's piston promotes the shaping of oil film when cold start, reduces the wearing and tearing of piston and cylinder body inner wall.
To achieve the purpose, the utility model adopts the following technical proposal:
a piston to facilitate cold start antifriction, comprising: piston top, piston leak protection portion and piston skirt portion, the piston top sets up seals on the upper portion of piston leak protection portion, piston skirt portion sets up the below in piston leak protection portion, be provided with the oil ring groove on the piston leak protection portion excircle, piston leak protection portion inner wall evagination is provided with the ring body that is located oil ring groove position below, the ring body hole is provided with the cofferdam that the round upwards extends, cofferdam, ring body and piston leak protection portion enclose into annular oil storage tank, be provided with the oil gallery that extends to in the oil storage tank in the oil ring groove.
The piston top, the piston leakage-proof part and the piston skirt part are of an integrated aluminum alloy structure.
Wherein, be provided with the gas ring groove that is located the oil ring groove top on the piston leak protection portion excircle.
Wherein, the quantity of gas ring groove is 2.
And the height of the top surface of the cofferdam is not lower than that of the oil return hole.
The piston is characterized in that pin bosses are symmetrically arranged in the piston skirt, pin holes are formed in the pin bosses, and clamp spring mounting grooves are formed in the pin holes.
The utility model has the advantages that: the utility model provides a piston that is favorable to cold start antifriction, the engine is at the operation in-process, unnecessary lubricating oil in the cylinder body can get into the oil storage tank through the oil gallery, ensure oil return convenience, and make the engine shut down the back leave some lubricating oil in the oil storage tank, when the engine cold start, the lubricating oil in the oil storage tank gets into the cylinder body through the oil gallery very first time, form the oil film at the cylinder body inner wall through the effect of piston ring, the wearing and tearing problem of piston with the cylinder body inner wall has been reduced, along with the rise of oil temperature, the cylinder body inner wall obtains abundant lubricating oil, unnecessary lubricating oil again gets into the oil storage tank through the oil gallery.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the specific embodiment with reference to fig. 1.
A piston for facilitating cold start wear reduction as shown in fig. 1, comprising: piston top 1, piston leak protection portion 2 and skirt portion 12, piston top 1 sets up seals on the upper portion of piston leak protection portion 2, skirt portion 12 sets up the below at piston leak protection portion 2, piston top 1, piston leak protection portion 2 and skirt portion 12 formula aluminum alloy structure as an organic whole, the dead weight is light, the sound construction.
The piston skirt 12 is symmetrically provided with pin bosses 10, the pin bosses 10 are provided with pin holes 11, so that the pin shaft is convenient to mount, the pin holes 11 are provided with clamp spring mounting grooves 9, clamp springs are mounted respectively, and the end part of the pin shaft is limited.
Be provided with oil ring groove 6 on the 2 excircles in piston leak protection portion, the combination oil ring of easy to assemble is favorable to striking off unnecessary lubricating oil in the cylinder body. Be provided with the gas ring groove 7 that is located the oil ring groove 6 top on 2 excircles of piston leak protection portion, the quantity of gas ring groove 7 is 2, can install the gas ring respectively in the gas ring groove 7, reduces the problem of cylinder body gas leakage.
2 inner wall evaginations of piston leak protection portion are provided with ring body 5 that is located the 6 positions below of oil ring groove, the integration of 5 holes in the ring body is provided with the cofferdam 4 that the round upwards extends, cofferdam 4, ring body 5 and piston leak protection portion 2 enclose into annular oil storage tank 3, be provided with the oil gallery 8 that extends to in the oil storage tank 3 in the oil ring groove 6, the unnecessary lubricating oil that the combination oil ring struck off can get into oil storage tank 3 through oil gallery 8 for leave some lubricating oil in the oil storage tank 3. When the engine is in cold start, lubricating oil in the oil storage tank 3 enters the cylinder body through the oil return hole 8 at the first time, and an oil film is formed on the inner wall of the cylinder body under the action of the combined oil ring, so that the problem of abrasion between the piston and the inner wall of the cylinder body is solved.
The height of the top surface of the cofferdam 4 is not lower than that of the oil return hole 8, so that lubricating oil is prevented from being sprayed into the inner cavity of the piston leakage-proof part 2 through the oil return hole 8, the lubricating oil is ensured to enter the oil storage tank 3, and the lubricating oil in the oil storage tank 3 can reach the inner wall of the cylinder body through the oil return hole 8 when the engine is in cold start.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (6)
1. A piston to facilitate cold start antifriction, comprising: piston top, piston leak protection portion and piston skirt portion, the piston top sets up seals on the upper portion of piston leak protection portion, piston skirt portion sets up the below in piston leak protection portion, be provided with the oil ring groove on the piston leak protection portion excircle, its characterized in that, piston leak protection portion inner wall evagination is provided with the ring body that is located oil ring groove position below, the ring body hole is provided with the cofferdam that the round upwards extends, cofferdam, ring body and piston leak protection portion enclose into annular oil storage tank, be provided with the oil gallery that extends to in the oil storage tank in the oil ring groove.
2. The piston facilitating cold start wear reduction of claim 1, wherein the piston crown, piston leak preventer, and piston skirt are of unitary aluminum alloy construction.
3. The piston facilitating cold start antifriction of claim 1, wherein a gas ring groove is provided on an outer circumference of the piston leakage prevention portion above the oil ring groove.
4. The piston facilitating cold start antifriction of claim 3, wherein the number of gas ring grooves is 2.
5. The piston for facilitating cold start wear reduction of claim 1, wherein said weir top surface is positioned no lower in elevation than the location of the oil return hole.
6. The piston beneficial to cold start antifriction of claim 1, wherein pin bosses are symmetrically disposed in the piston skirt, pin bores are disposed in the pin bosses, and snap spring mounting slots are disposed in the pin bores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229635.XU CN211975185U (en) | 2020-02-29 | 2020-02-29 | Piston beneficial to cold start and wear reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229635.XU CN211975185U (en) | 2020-02-29 | 2020-02-29 | Piston beneficial to cold start and wear reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211975185U true CN211975185U (en) | 2020-11-20 |
Family
ID=73376863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020229635.XU Expired - Fee Related CN211975185U (en) | 2020-02-29 | 2020-02-29 | Piston beneficial to cold start and wear reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211975185U (en) |
-
2020
- 2020-02-29 CN CN202020229635.XU patent/CN211975185U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6854439B2 (en) | Prechamber combustion system | |
| CN201443440U (en) | Variable compression ratio piston | |
| CN211975185U (en) | Piston beneficial to cold start and wear reduction | |
| CN207018101U (en) | A kind of Combined piston structure | |
| CN201412234Y (en) | Oil storage piston in favor of starting lubrication of engine | |
| CN2934609Y (en) | Engine cylinder sleeve | |
| CN206419117U (en) | Piston and internal combustion engine for internal combustion engine | |
| CN202194713U (en) | Diesel engine with a cooling nozzle capable of forcibly spraying oil and cooling a piston | |
| CN211975197U (en) | Cast aluminum piston capable of improving utilization rate of lubricating oil | |
| CN209781058U (en) | Piston with friction reducing coating convenient to maintain | |
| CN211975200U (en) | Antifriction piston based on prevent expander | |
| CN211975194U (en) | Antifriction piston assembly who contains split type key seat | |
| CN211975186U (en) | Assembly piston that oil return utilized | |
| CN210564791U (en) | Piston ring bank structure of internal combustion engine | |
| CN211975192U (en) | Expansion-proof piston with oil storage cavity | |
| CN212202274U (en) | Assembly piston based on clamp spring | |
| CN211975193U (en) | Anti-expansion ring oil storage type antifriction piston | |
| CN213175854U (en) | Piston mechanism capable of continuously lubricating | |
| CN211975199U (en) | Split type piston cooling and lubricating assembly | |
| CN204493697U (en) | The cylinder block of Pneumatic high pressure greasing pump | |
| CN206845295U (en) | Engine piston spraying cooling structure | |
| CN212774530U (en) | Engine piston | |
| CN212958885U (en) | Engine piston | |
| CN202746029U (en) | Highly sealed aluminum piston with oil storage circular groove | |
| CN212202270U (en) | Wear-reducing piston assembly convenient to maintain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201120 Termination date: 20210228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |