CN202468051U - Lightweight piston - Google Patents
Lightweight piston Download PDFInfo
- Publication number
- CN202468051U CN202468051U CN2012200995567U CN201220099556U CN202468051U CN 202468051 U CN202468051 U CN 202468051U CN 2012200995567 U CN2012200995567 U CN 2012200995567U CN 201220099556 U CN201220099556 U CN 201220099556U CN 202468051 U CN202468051 U CN 202468051U
- Authority
- CN
- China
- Prior art keywords
- piston
- piston pin
- hole
- collision prevention
- valve collision
- 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
- 230000002265 prevention Effects 0.000 claims description 27
- 210000000707 wrist Anatomy 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 description 5
- 101150054854 POU1F1 gene Proteins 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241001270131 Agaricus moelleri Species 0.000 description 2
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 1
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a lightweight piston. The lightweight piston comprises an intake valve collision-preventing pit, a gas extruding surface, an exhaust valve collision-preventing pit, an oil hole, a piston annular groove, a piston pin seat, a piston pin hole, a piston skirt part and a piston pin seat hole, wherein the gas extruding surface is positioned at the upper end of the piston; the intake valve collision-preventing pit and the exhaust valve collision-preventing pit are positioned at the upper end of the piston; the oil hole and the piston annular groove are positioned on the middle upper part of the piston; the piston pin seat, the piston pin hole and the piston pin seat hole are positioned in the middle of the piston; and the piston skirt part is positioned on the middle lower part. The lightweight piston reasonably avoids collision of the valves and the piston when the valves and the piston moves, guarantees the strength and reduces the mass of the piston. According to the length and the area of the piston skirt part, the inertia force of the piston during reciprocating motion is reduced, the friction resistance is reduced and power output is increased. Energy is saved and vibration of the engine is reduced.
Description
Technical field
The utility model relates to a kind of piston of engine.
Background technique
Piston is automobile, motorcycle engine " heart ", and the mechanical load and the heat load of bearing alternation are one of worst key components and partss of operating conditions in the motor.The function of piston is to bear gas pressure, and passes to connecting rod through wrist pin and order about crankshaft rotating, and piston head still is the constituent element of firing chamber.The top of piston and the concave shaped space of cylinder head form the firing chamber jointly, and wherein the design of the shape of firing chamber and piston head has very big influence to dodging with combustion process of internal-combustion engine valve motion.With very high speed to-and-fro motion, and speed changes constantly piston in cylinder, and this has just produced very big inertial force, makes piston receive very big additional load.The top shape of existing piston has flat-top, protruding top, concave crown etc., and four adopt flat-top towards the piston of engine top more, and its technology is simple, and heat absorption area is little, but in order to change combustion chamber volume, also useful protruding top or concave head piston.Mostly piston head commonly used is the structure of dodging of two valves and four valves.Motorcycle float amount overhead camshaft internal-combustion engine in the market, the sphere piston of the hemispherical combustion chamber that generally adopts and the almost plane of two air valve structures, the sphere piston of the almost plane of fluffy shape structure and four air valve structures.Piston includes intake valve collision prevention pit, squish face, exhaust valve collision prevention pit, oilhole, piston ring groove, piston pin boss, piston pin hole, piston skirt, these parts of piston pin boss hole.The shortcoming that existing piston also exists is: the weight of piston is bigger, and engine luggine is bigger, and power output has much room for improvement.
Summary of the invention
In order to overcome the above-mentioned deficiency of available engine piston, the utility model provides a kind of weight less lightweight piston.
The technological scheme that the utility model solves its technical problem is: a kind of lightweight piston; Comprise intake valve collision prevention pit, squish face, exhaust valve collision prevention pit, oilhole, piston ring groove, piston pin boss, piston pin hole, piston skirt, piston pin boss hole; The squish face is positioned at the piston upper end; Intake valve collision prevention pit and exhaust valve collision prevention pit are positioned at the piston upper end; Oilhole, piston ring groove are positioned at the piston middle and upper part, and piston pin boss, piston pin hole, piston pin boss hole are positioned at the piston middle part, and the piston skirt is positioned at the piston lower middle portion.
Further, described intake valve collision prevention pit has one, and described exhaust valve collision prevention pit has one, and described intake valve collision prevention pit and exhaust valve collision prevention pit lay respectively at the both sides of wrist pin longitudinal median plane.
Further, described piston pin boss is positioned at said piston pin hole bottom, and is distributed in piston pin hole longitudinal median plane both sides; Described piston pin boss hole be positioned at piston pin boss above, and be distributed in the both sides in piston pin boss hole.
Further, described piston pin hole is positioned at piston longitudinal median plane deflection intake valve collision prevention pit one side.
Further, described piston skirt and described piston pin boss form annular enclosed integral body.
The method for using of the utility model is identical with the method for using of existing piston, repeats no more at this.
The beneficial effect of the utility model is: when valve and piston motion, reasonably avoid valve and piston collisions, in proof strength, alleviated piston mass; Piston skirt length and area; Inertial force reduces when making reciprocating motion of the pistons, and surface friction drag reduces, and has improved power output.Practice thrift the energy, alleviated the vibration of motor.
Description of drawings
Fig. 1 is the plan view of the utility model.
Fig. 2 is the plan view of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
With reference to Fig. 1, Fig. 2; The lightweight piston; Comprise intake valve collision prevention pit 1, squish face 2, exhaust valve collision prevention pit 3, oilhole 4, piston ring groove 5, piston pin boss 6, piston pin hole 7, piston skirt 8, piston pin boss hole 9; Squish face 2 is positioned at piston upper end, intake valve collision prevention pit 1 with exhaust valve collision prevention pit 2, be positioned at the piston upper end, oilhole 4, piston ring groove 5 are positioned at the piston middle and upper part; Piston pin boss 6, piston pin hole 7, piston pin boss hole 9 are positioned at the piston middle part, and piston skirt 8 is positioned at the piston lower middle portion.
Have an intake valve collision prevention pit 1 and an exhaust valve collision prevention pit 3 in the present embodiment, lay respectively at both sides, 7 plane, wrist pin center.Piston pin boss 6 is positioned at piston pin hole 7 bottoms, and is distributed in piston pin hole 9 vertical center plane both sides; Piston pin boss hole 9 be positioned at piston pin boss 6 above, and be distributed in the both sides in piston pin boss hole 9.Piston pin hole 7 is positioned at centre plane deflection intake valve collision prevention pit 1 one sides.Piston skirt 8 forms annular enclosed integral body with piston pin boss 6.
Claims (5)
1. lightweight piston; Comprise intake valve collision prevention pit, squish face, exhaust valve collision prevention pit, oilhole, piston ring groove, piston pin boss, piston pin hole, piston skirt, piston pin boss hole; It is characterized in that: the squish face is positioned at the piston upper end, and intake valve collision prevention pit and exhaust valve collision prevention pit are positioned at the piston upper end, and oilhole, piston ring groove are positioned at the piston middle and upper part; Piston pin boss, piston pin hole, piston pin boss hole are positioned at the piston middle part, and the piston skirt is positioned at the piston lower middle portion.
2. according to the described lightweight piston of claim 1; It is characterized in that: described intake valve collision prevention pit has one; Described exhaust valve collision prevention pit has one, and described intake valve collision prevention pit and exhaust valve collision prevention pit lay respectively at the both sides of wrist pin longitudinal median plane.
3. according to the described lightweight piston of claim 1, it is characterized in that: described piston pin boss is positioned at said piston pin hole bottom, and is distributed in piston pin hole longitudinal median plane both sides; Described piston pin boss hole be positioned at piston pin boss above, and be distributed in the both sides in piston pin boss hole.
4. according to the described lightweight piston of claim 1, it is characterized in that: described piston pin hole is positioned at piston longitudinal median plane deflection intake valve collision prevention pit one side.
5. according to the described lightweight piston of claim 1, it is characterized in that: described piston skirt and described piston pin boss form annular enclosed integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200995567U CN202468051U (en) | 2012-03-16 | 2012-03-16 | Lightweight piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200995567U CN202468051U (en) | 2012-03-16 | 2012-03-16 | Lightweight piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468051U true CN202468051U (en) | 2012-10-03 |
Family
ID=46916214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200995567U Expired - Fee Related CN202468051U (en) | 2012-03-16 | 2012-03-16 | Lightweight piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468051U (en) |
-
2012
- 2012-03-16 CN CN2012200995567U patent/CN202468051U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20121003 Termination date: 20150316 |
|
| EXPY | Termination of patent right or utility model |