CN2725552Y - Piston - Google Patents
Piston Download PDFInfo
- Publication number
- CN2725552Y CN2725552Y CN 200420052751 CN200420052751U CN2725552Y CN 2725552 Y CN2725552 Y CN 2725552Y CN 200420052751 CN200420052751 CN 200420052751 CN 200420052751 U CN200420052751 U CN 200420052751U CN 2725552 Y CN2725552 Y CN 2725552Y
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- CN
- China
- Prior art keywords
- piston
- valve hole
- deeply
- depth
- model
- 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
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model belongs to a component of an engine, in particular to relate to a piston used for the engine of xiali 376 model, which is characterized in that depth of an inlet valve pit is 4.3 to 4.7mm and depth of an exhaust valve pit is 3.9 to 4.3mm. The bottom face of the combustion-chamber of the piston is heightened 0.3 to 0.7mm. The piston has the obvious advantages that the compression ratio of the piston is constant, the depth of the valve pit is increased, the abrasion of the workpiece is alleviated and the useful life of the engine is improved, and the piston makes the valve and the valve pit of the piston end face no impact.
Description
Technical field: the utility model belongs to the parts of motor, is specifically related to the piston that a kind of Xiali 376 model motors are used.
Background technique: the piston that uses on the existing Xiali 376 model motors, its shortcoming is: it is little that two valves hole depth value designs, the intake valve hole degree of depth is 1.78mm, the exhaust valve hole is 1.15mm deeply, the time rule chain of motor is easily broken, advises chain at that time when disconnected, because effect of inertia makes the valve hole of valve percussion piston end surface, cause piston rod, crankshaft deformation even damage, reduce motor working life.
Summary of the invention: the purpose of this utility model provides a kind of constant at the compression ratio that keeps piston, advises chain at that time when disconnected, and does not collide in the valve hole of valve and piston end surface, and piston rod, bent axle are indeformable, thus the piston in raising motor working life.
The technical solution of the utility model is: a kind of piston, the end face that comprises piston body is provided with the intake valve hole and the exhaust valve that match with inlet and outlet door on the cylinder cap and cheats, it is characterized in that, the intake valve hole is 4.3-4.7mm deeply, the exhaust valve hole is 3.9-4.3mm deeply, and 0.3-0.7mm is increased in the piston combustion bowl bottom surface.Wherein, described intake valve hole is 4.5mm deeply, and the exhaust valve hole is 4.1mm deeply, and 0.5mm is increased in the piston combustion bowl bottom surface.
Good effect of the present utility model is: because the inlet and outlet door hole degree of depth on the piston end surface increases, when the time rule chain of motor was disconnected, valve was cheated with the piston end surface valve and is not collided, and can not cause piston rod, crankshaft deformation or damage; And the increasing of piston combustion bowl bottom surface guarantees Piston Compression than constant, thereby has and can alleviate component wear, improves the motor obvious advantage in working life.
Description of drawings: come the technical solution of the utility model is described in further details below in conjunction with the drawings and specific embodiments.
Accompanying drawing is a structural representation of the present utility model.
Embodiment: with reference to the accompanying drawings, the intake valve hole 2 on piston body 1 end face is 4.3-4.7mm deeply, and exhaust valve hole 3 is 3.9-4.3mm deeply, and 0.3-0.7mm is increased in the piston combustion bowl bottom surface.The intake valve hole 2 that present embodiment adopts is 4.5mm deeply, and exhaust valve hole 3 is 4.1mm deeply, and 0.5mm is increased in piston combustion bowl bottom surface 4.
Claims (2)
1, a kind of piston, the end face that comprises piston body (1) is provided with the intake valve hole (2) and the exhaust valve that match with inlet and outlet door on the cylinder cap and cheats (3), it is characterized in that, intake valve hole (2) is 4.3-4.7mm deeply, exhaust valve hole (3) is 3.9-4.3mm deeply, and piston combustion bowl bottom surface (4) increase 0.3-0.7mm.
By the described a kind of piston of claim 1, it is characterized in that 2, described intake valve hole (2) is 4.5mm deeply, exhaust valve hole (3) is 4.1mm deeply, and piston combustion bowl bottom surface (4) increase 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420052751 CN2725552Y (en) | 2004-07-29 | 2004-07-29 | Piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420052751 CN2725552Y (en) | 2004-07-29 | 2004-07-29 | Piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725552Y true CN2725552Y (en) | 2005-09-14 |
Family
ID=35040271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420052751 Expired - Fee Related CN2725552Y (en) | 2004-07-29 | 2004-07-29 | Piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2725552Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900026A (en) * | 2010-07-05 | 2010-12-01 | 天津大学 | Wall-guided in-cylinder direct injection gasoline engine combustion chamber |
| CN108561237A (en) * | 2018-05-24 | 2018-09-21 | 华域科尔本施密特活塞有限公司 | A kind of processing technology of gasoline engine aluminum piston valve hole and its overlap |
| CN112081693A (en) * | 2020-09-15 | 2020-12-15 | 奇瑞汽车股份有限公司 | Miller cycle gasoline engine |
-
2004
- 2004-07-29 CN CN 200420052751 patent/CN2725552Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900026A (en) * | 2010-07-05 | 2010-12-01 | 天津大学 | Wall-guided in-cylinder direct injection gasoline engine combustion chamber |
| CN108561237A (en) * | 2018-05-24 | 2018-09-21 | 华域科尔本施密特活塞有限公司 | A kind of processing technology of gasoline engine aluminum piston valve hole and its overlap |
| CN108561237B (en) * | 2018-05-24 | 2024-05-14 | 华域科尔本施密特活塞有限公司 | Gasoline engine aluminum piston valve pit and flash processing technology thereof |
| CN112081693A (en) * | 2020-09-15 | 2020-12-15 | 奇瑞汽车股份有限公司 | Miller cycle gasoline engine |
| CN112081693B (en) * | 2020-09-15 | 2021-12-28 | 奇瑞汽车股份有限公司 | Miller cycle gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |