CN201284698Y - Pin hole copper-inlaid lining type piston with inner-cooling structure - Google Patents
Pin hole copper-inlaid lining type piston with inner-cooling structure Download PDFInfo
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- CN201284698Y CN201284698Y CNU2008201908593U CN200820190859U CN201284698Y CN 201284698 Y CN201284698 Y CN 201284698Y CN U2008201908593 U CNU2008201908593 U CN U2008201908593U CN 200820190859 U CN200820190859 U CN 200820190859U CN 201284698 Y CN201284698 Y CN 201284698Y
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Abstract
The utility model provides a pinhole inlaid copper lining type inner-cooling structural piston which comprises a piston body and a copper lining, wherein, the piston body consists of a piston head and a piston skirt; the piston head and the piston skirt form integrated aluminium alloy casting structure; the upper head surface of the piston head is provided with a burning chamber; the head part of the piston is provided with three annular troughs, wherein, the first annular trough on the upside is arranged in a cast iron inlaid loop inlaid in the piston head; and the annular trough forms ladder structure the upper surface and the lower surface of which are inclined surfaces; an annular cooling oil cavity is arranged between the burning chamber and the annular trough; an oil inlet hole and an oil outlet hole of the annular cooling oil cavity are communicated with an inner cavity of the piston body; the copper lining is inlaid in a pinhole of the piston skirt; and the pinhole is arranged in the copper lining. The utility model adopts the piston body having integrated aluminium alloy casting structure, is convenient for processing, reduces integrated weight of the piston, reduces processing cost, ensures work reliability of the piston and a piston ring, enhances the bearing capacity of the piston and avoids endurance cracks.
Description
Technical field
The utility model relates to a kind of diesel engine for automobile piston.
Background technique
Along with vehicular engine develops to high-power, high load, lightweight direction, reinforcing degree improves constantly, and emission request is more and more stricter.The diesel engine for automobile piston of high-power now, high load, low emission has the hinge structure piston that adopts steel top aluminium apron, i.e. piston head and piston skirt separate machined manufacturing moulding couples together by wrist pin; Piston head adopts the steel material manufacturing, and piston skirt adopts the aluminum material manufacturing.Also have and adopt whole steel formula structure piston,, be combined as a whole, carry out the machining moulding then by welding manner promptly by the forging molding piston blank or forge piston crown respectively and the skirt section blank.Be hinge piston or whole steel formula piston all because of reasons such as materials, increased difficulty of processing and processing cost, overall weight also increases to some extent.
Summary of the invention
The utility model is at the problem that difficulty of processing is big, processing cost is high that existing diesel engine for automobile hinge or whole steel formula piston exist, provide a kind of easy to process, processing cost is low, the pin-and-hole of reliable operation is inlayed copper bush type inner-cooling structure piston.
The utility model adopts following technical solution:
Pin-and-hole is inlayed copper bush type inner-cooling structure piston and is comprised piston only and copper lining, piston only is made up of piston head and piston skirt, piston head and piston skirt are the integral Al-alloy cast structure, the upper-end surface of piston head is provided with the firing chamber, piston crown is provided with three annular grooves, wherein Shang Mian article one annular groove is located in the cast iron edge circle that is set in the piston head, this annular groove is the trapezium structure that top and bottom are the inclined-plane, between firing chamber and annular groove, be provided with annular cooling oil pocket, the oil inlet hole and the oil outlet of annular cooling oil pocket communicate with the inner chamber of piston only, the pin-and-hole place of piston skirt studs with copper lining, is processed with pin-and-hole in the copper lining.
Above-mentioned firing chamber is shallow basin type.
It is abnormally-structured that pin-and-hole in the said copper lining is hyperbola.
Lower end, said piston skirt is provided with the breach of stepping down of dodging cooling jet.
The utility model adopts the piston only of integral Al-alloy cast structure, is convenient to processing, has reduced the overall weight of piston, has reduced processing cost.Annular cooling oil pocket has reduced the operating temperature of piston only, has guaranteed the functional reliability of piston and piston ring.Stud with copper lining at the pin-and-hole place, improved the bearing capacity of piston, avoid the generation of fatigue crack.
Description of drawings
Fig. 1 is an internal structure schematic representation of the present utility model.
Fig. 2 is the sectional view of pin-and-hole in the utility model.
Fig. 3 is an external structure schematic representation of the present utility model.
Wherein: 1------------------------------three annular groove, 11---spill port, 12---spill is cast face-port to oil inlet hole, 10 to the breach of stepping down, 9 to pin-and-hole, 8 to copper lining, 7 to oil outlet, 6 to annular cooling oil pocket, 5 to cast iron edge circle, 4 to piston only, 2 in firing chamber, 3.
Embodiment
As shown in Figure 1, pin-and-hole of the present utility model is inlayed copper bush type inner-cooling structure piston and is comprised piston only 1 and copper lining 6.Piston only 1 is made up of piston head and piston skirt, and piston head and piston skirt adopt high performance casting aluminum alloy low pressure integral casting forming, through ageing treatment.The outside diameter of piston only 1 is ∮ 114mm, and compression height is 74.245mm, and height overall is 110.5mm.Be provided with three annular grooves 10 on the piston crown cylindrical from top to bottom, wherein uppermost article one annular groove place studs with cast iron edge circle 3, article one, annular groove is located in the cast iron edge circle 3, this annular groove is the trapezium structure that top and bottom are the inclined-plane, this structure can effectively prevent because of the piston ring sticking that machine oil carbonization coking causes, fracture, make piston ring keep favorable elasticity and sealing, improve the complete machine functional reliability, improve the indexs such as engine oil consumption, air leakage and discharging of motor.The upper-end surface of piston head is provided with shallow basin type firing chamber 2, helps improving burning, and the volume of firing chamber 2 is: 68.5ml.Between firing chamber 2 and three annular grooves 10, be provided with annular cooling oil pocket 4, the oil inlet hole 9 and the oil outlet 5 of annular cooling oil pocket 4 all communicate with the inner chamber of piston only 1, when piston is worked in motor, machine oil sprays into from oil inlet hole 9, and concussion in annular cooling chamber 4, flow out from oil outlet 5, take away the heat of piston only 1, to reduce the operating temperature of piston only 1, guarantee the functional reliability of piston and piston ring.The pin-and-hole place of piston skirt is bumped into half-finished copper lining 6 with the interference fit then earlier through roughing, then through the machining of a plurality of operations, becomes and is the abnormally-structured pin-and-hole of hyperbola 7, as shown in Figure 2, carries out surface treatment then.The diameter of pin-and-hole 7 is ∮ 45mm.Utilize the higher fatigue resistance of copper material, improve piston pin hole 7 bearing capacitys, avoid the generation of fatigue crack, thereby strengthen the intensity at piston pin boss position.
In order to dodge the cooling jet of installing on the engine body, in the lower end, piston skirt, design has the oil nozzle that the casts out breach 8 of stepping down, when preventing that piston motion from arriving lower dead center with the cooling jet interference.
As shown in Figure 3, in piston skirt short-axis direction design spill casting face-port 12 is arranged, spill casting face-port 12 is cast with four spill ports 11 that communicate with the piston oil annular groove with the design of piston oil annular groove intersection, is convenient to the machine oil that oil ring scrapes and refluxes smoothly.This structural design helps reducing consumption of lubricating oil, has alleviated the overall weight of piston again.
Piston of the present utility model adopts the integral black phosphatization to handle and the piston skirt graphitization processing, helps strengthening the surface strength of piston and the greasy property of skirt section fitting surface.
The outside diameter of piston only 1 can be adjusted in the 80-140mm scope, also can make other physical dimension changing and adjustment.
Claims (4)
1. a pin-and-hole is inlayed copper bush type inner-cooling structure piston, comprise piston only and copper lining, piston only is made up of piston head and piston skirt, piston head and piston skirt are the integral Al-alloy cast structure, the upper-end surface of piston head is provided with the firing chamber, it is characterized in that: piston crown is provided with three annular grooves, wherein Shang Mian article one annular groove is located in the cast iron edge circle that is set in the piston head, this annular groove is the trapezium structure that top and bottom are the inclined-plane, between firing chamber and annular groove, be provided with annular cooling oil pocket, the oil inlet hole and the oil outlet of annular cooling oil pocket communicate with the inner chamber of piston only, and the pin-and-hole place of piston skirt studs with copper lining, is processed with pin-and-hole in the copper lining.
2. pin-and-hole according to claim 1 is inlayed copper bush type inner-cooling structure piston, and it is characterized in that: described firing chamber is shallow basin type.
3. pin-and-hole according to claim 1 is inlayed copper bush type inner-cooling structure piston, it is characterized in that: it is abnormally-structured that the pin-and-hole in the described copper lining is hyperbola.
4. pin-and-hole according to claim 1 is inlayed copper bush type inner-cooling structure piston, it is characterized in that: lower end, described piston skirt is provided with the breach of stepping down of dodging cooling jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201908593U CN201284698Y (en) | 2008-09-12 | 2008-09-12 | Pin hole copper-inlaid lining type piston with inner-cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201908593U CN201284698Y (en) | 2008-09-12 | 2008-09-12 | Pin hole copper-inlaid lining type piston with inner-cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284698Y true CN201284698Y (en) | 2009-08-05 |
Family
ID=40949683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201908593U Expired - Fee Related CN201284698Y (en) | 2008-09-12 | 2008-09-12 | Pin hole copper-inlaid lining type piston with inner-cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201284698Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758813A (en) * | 2013-12-23 | 2014-04-30 | 舒海法 | Air compressing mechanism of light electric hammer |
| CN105377482A (en) * | 2013-04-03 | 2016-03-02 | Ks科尔本施密特有限公司 | Machining process for trapezoid rings with small axial dimensions, used in pistons of internal combustion engines |
| CN106402081A (en) * | 2016-10-28 | 2017-02-15 | 福斯流体控制（苏州）有限公司 | Pressure following sealing liquid isolation system used for mechanical sealing |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
-
2008
- 2008-09-12 CN CNU2008201908593U patent/CN201284698Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105377482A (en) * | 2013-04-03 | 2016-03-02 | Ks科尔本施密特有限公司 | Machining process for trapezoid rings with small axial dimensions, used in pistons of internal combustion engines |
| CN105377482B (en) * | 2013-04-03 | 2018-05-22 | Ks科尔本施密特有限公司 | For the process of the keystone ring of the axial small size of the piston of internal combustion engine |
| CN103758813A (en) * | 2013-12-23 | 2014-04-30 | 舒海法 | Air compressing mechanism of light electric hammer |
| CN106402081A (en) * | 2016-10-28 | 2017-02-15 | 福斯流体控制（苏州）有限公司 | Pressure following sealing liquid isolation system used for mechanical sealing |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20130912 |