CN201679576U - Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure - Google Patents
Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure Download PDFInfo
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- CN201679576U CN201679576U CN 201020144346 CN201020144346U CN201679576U CN 201679576 U CN201679576 U CN 201679576U CN 201020144346 CN201020144346 CN 201020144346 CN 201020144346 U CN201020144346 U CN 201020144346U CN 201679576 U CN201679576 U CN 201679576U
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Abstract
The utility model relates to an integral aluminium-alloy piston bearing the explosion pressure of 20MPa and having an inner-cooling structure. The utility model solves the problems of large processing difficulty, high processing cost and large weight of a piston, which exist in an articulated type or integral steel type piston of a traditional diesel engine, and has the advantages of convenient processing, low processing cost, reliable working, light weight and the like. The utility model has the structure that the integral aluminium-alloy piston bearing the explosion pressure of 20MPa and having the inner-cooling structure comprises a piston body, wherein the head part of the piston body is provided with a combustion chamber, the outer circle of the head part is provided with a plurality of ring grooves from top to bottom, a first ring groove at the uppermost face is inlaid with a cast-iron ring seat, and an annular cooling oil cavity is arranged between each ring groove and the combustion chamber and is provided with an oil inlet hole, an oil return hole of an inner cavity and an oil outlet hole; and the skirt part of the piston body is provided with a pin hole and a pin seat, the direction of the short axis of the skirt part is provided with a concave casting face window, and the junction position of the concave casting face window and the ring grooves is provided with at least one oil return hole.
Description
Technical field
The utility model provides a kind of heavy goods vehicles usefulness, engineering machinery diesel engine piston, relates in particular to a kind of inner-cooling structure integral Al-alloy piston of the 20MPa of bearing pressure of explosion.
Background technique
Along with truck, engineering machinery diesel engine develop to high-power, high load, high detonation pressure, low emission direction, reinforcing degree improves constantly, the working environment of piston is more and more abominable, in order to address the above problem, someone has designed the hinge structure of steel top aluminium apron, and promptly piston head and piston skirt separate machined are made, and couple together by wrist pin, piston head adopts the steel material manufacturing, and piston skirt adopts the aluminum alloy material manufacturing.Also have and adopt whole steel 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 head respectively and the skirt section blank.Be hinge piston or whole steel formula piston all because of reasons such as material, manufacturing process, increased difficulty of processing and processing cost, the piston overall weight also significantly increases.
Summary of the invention
The purpose of the utility model pin is exactly for solving the problem that difficulty of processing is big, processing cost is high, piston weight is big that existing diesel hinge or whole steel formula piston exist, provide a kind of easy to process, processing cost is low, the inner-cooling structure integral Al-alloy piston of reliable operation, the lightweight 20MPa of bearing pressure of explosion.
For achieving the above object, the utility model adopts following technical solution:
A kind of inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion, it comprises piston only, the piston only head is provided with the firing chamber, the head cylindrical is provided with the multiple tracks annular groove from top to bottom, the wherein uppermost first road annular groove studs with the cast iron ring seat, be provided with annular cooling oil pocket between each annular groove and firing chamber, annular cooling oil pocket is provided with oil inlet hole, inner chamber spill port and oil outlet; The skirt section of piston only is provided with pin-and-hole and key seat, is provided with spill casting face-port at the skirt section short-axis direction, and spill casting face-port and annular groove intersection are provided with at least one spill port.
The w type firing chamber in cigarette hole is kept away in described firing chamber for band.
Be trapezium structure above the described annular groove that studs with the cast iron ring seat.
Described oil inlet hole and oil outlet are all in key seat one side; The inner chamber spill port communicates with the inner chamber of piston only.
Described pin-and-hole is hyperbolic configuration, and key seat is stepped.
Described piston skirt is the piston skirt of graphitization processing, also be provided with the firepower bank and the second ring bank in the skirt section, wherein firepower has the gap on the bank, and the microcosmic profile of the second ring bank is oval tubbiness, respectively keeps a upper support face and lower support face at spill casting face-port upper and lower.
Lower end, described 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 low-pressure die casting structure, is convenient to processing, has reduced the overall weight of piston, has reduced processing cost.Outward-dipping annular cooling oil pocket has reduced the operating temperature of piston only, has guaranteed the functional reliability of piston and piston ring, and key seat is stepped, and it is abnormally-structured that pin-and-hole is hyperbola, improved the bearing capacity of piston.
Piston-top surface is provided with the firing chamber, piston crown is provided with three road annular grooves, wherein Shang Mian the first road annular groove studs with the austenitic cast iron ring seat, this annular groove above and below, road is the trapezium structure on inclined-plane, between firing chamber and annular groove, be provided with annular cooling oil pocket, annular cooling oil pocket has three oil outlets and an oil inlet hole, and piston second round of the off coast of ring is oval tubbiness and graphitization processing, and the face-port upper and lower respectively has a supporting surface.The w type in cigarette hole is kept away in the firing chamber for band.The lower end, piston skirt is provided with the breach of stepping down of dodging cooling jet.
The beneficial effects of the utility model are: easy to process, processing cost is low, reliable operation, in light weight.
Description of drawings
Fig. 1 is an internal structure schematic representation of the present utility model;
Fig. 2 is a pin-and-hole direction sectional view of the present utility model;
Fig. 3 is a polycrystalline substance schematic representation of the present utility model;
Fig. 4 is an external structure schematic representation of the present utility model.
Wherein: 1, piston only, 2, the firing chamber, 3, the cast iron ring seat, 4, annular cooling oil pocket, 5, oil inlet hole, 6, pin-and-hole, 7, the breach of stepping down, 8, the inner chamber spill port, 9, the firepower bank, 10, the second ring bank, 11, the piston skirt, 12, spill port, 13, upper support face, 14, lower support face, 15, spill casting face-port, 16 key seats.17, oil outlet.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Among Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model piston blank adopts high performance casting aluminum alloy low pressure integral casting forming.The piston crown cylindrical of piston only 1 is provided with three road annular grooves from top to bottom, and annular groove place, wherein uppermost first road studs with austenitic cast iron ring seat 3, and these annular groove top and bottom, road are trapezium structure.The upper-end surface of piston head is provided with the w type firing chamber 2 that band is kept away the cigarette hole.Be provided with annular cooling oil pocket 4 between firing chamber 2 and three road annular grooves, the oil inlet hole 5 of annular cooling oil pocket 4 and oil outlet 17 are all in key seat 16 1 sides of piston only 1, and inner chamber spill port 8 communicates with inner chamber.The pin-and-hole 6 of the piston skirt 11 of piston only 1 is hyperbola abnormally-structured (as shown in Figure 2), and key seat 16 is stepped.11 short-axis directions designs has spill casting face-port 15 in the piston skirt, and spill casting face-port 15 is cast with four spill ports 12 with piston oil annular groove intersection, communicates with the annular groove of piston, is convenient to the machine oil that oil ring scrapes and refluxes smoothly.Piston skirt of the present utility model 11 graphitization processing, firepower bank 9 adopts big gap, the second ring bank, 10 microcosmic profiles are oval tubbiness, and carried out graphitization processing, respectively keep a upper support face 13, lower support face 14 at the face-port upper and lower, increased the stability when piston moves in cylinder.
The production stage and the method for the inner-cooling oil recess structural entity all-aluminium piston of a kind of 20MPa of bearing pressure of explosion of the utility model are to adopt low die casting machine to cast out piston blank backlash desalinization of soil by flooding or leaching core; Piston blank is heat-treated; Detected a flaw in cold oil road in the piston; Process positions such as firing chamber, annular groove, pin-and-hole, turnover oilhole, cylindrical then respectively; Piston face is carried out graphitization processing.
Accompanying drawing of the present utility model has only been represented its a kind of embodiment, and concrete shape, structure, size can be made variation and adjustment under the situation that does not break away from the utility model spirit and scope.
Claims (7)
1. inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion, it is characterized in that, it comprises piston only, the piston only head is provided with the firing chamber, the head cylindrical is provided with the multiple tracks annular groove from top to bottom, the wherein uppermost first road annular groove studs with the cast iron ring seat, is provided with annular cooling oil pocket between each annular groove and firing chamber, and annular cooling oil pocket is provided with oil inlet hole, inner chamber spill port and oil outlet; The skirt section of piston only is provided with pin-and-hole and key seat, is provided with spill casting face-port at the skirt section short-axis direction, and spill casting face-port and annular groove intersection are provided with at least one spill port.
2. the inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion as claimed in claim 1 is characterized in that, the w type firing chamber in cigarette hole is kept away in described firing chamber for band.
3. the inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion as claimed in claim 1 is characterized in that, is trapezium structure above the described annular groove that studs with the cast iron ring seat.
4. the inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion as claimed in claim 1 is characterized in that described oil inlet hole and oil outlet are all in key seat one side; The inner chamber spill port communicates with the inner chamber of piston only.
5. the inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion as claimed in claim 1 is characterized in that described pin-and-hole (6) is hyperbolic configuration, and key seat is stepped.
6. the inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion as claimed in claim 1, it is characterized in that, described piston skirt is the piston skirt of graphitization processing, also be provided with the firepower bank and the second ring bank in the skirt section, wherein firepower has the gap on the bank, the microcosmic profile of the second ring bank is oval tubbiness, respectively keeps a upper support face and lower support face at spill casting face-port upper and lower.
7. the inner-cooling structure integral Al-alloy piston that bears the 20MPa pressure of explosion as claimed in claim 1 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 |
|---|---|---|---|
| CN 201020144346 CN201679576U (en) | 2010-03-30 | 2010-03-30 | Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020144346 CN201679576U (en) | 2010-03-30 | 2010-03-30 | Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure |
Publications (1)
| Publication Number | Publication Date |
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| CN201679576U true CN201679576U (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020144346 Expired - Fee Related CN201679576U (en) | 2010-03-30 | 2010-03-30 | Integral aluminium-alloy piston bearing explosion pressure of 20MPa and having inner-cooling structure |
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| CN (1) | CN201679576U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696870A (en) * | 2013-12-09 | 2014-04-02 | 潍柴动力股份有限公司 | Cylinder piston of diesel engine and diesel engine applying same |
| CN104014763A (en) * | 2014-06-10 | 2014-09-03 | 山东滨州渤海活塞股份有限公司 | Method for manufacturing aluminum borate crystal whisker enhancement combustor throat embedded ring inner-cooling aluminum piston |
| CN105756801A (en) * | 2016-01-29 | 2016-07-13 | 马勒技术投资(中国）有限公司 | Gasoline engine piston adapting to high detonation pressure and containing double-cast-iron ring and inner-cooling oil duct |
| CN105909420A (en) * | 2016-06-14 | 2016-08-31 | 广西玉柴机器股份有限公司 | Combustion chamber capable of reducing soot in diesel engine cylinder |
| CN111550325A (en) * | 2020-05-29 | 2020-08-18 | 滨州渤海活塞有限公司 | High-strength light internal combustion engine piston |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
| CN113958420A (en) * | 2021-11-12 | 2022-01-21 | 滨州渤海活塞有限公司 | Novel internal combustion engine piston and machining method thereof |
| CN115306578A (en) * | 2022-08-17 | 2022-11-08 | 马勒汽车技术（中国）有限公司 | Elliptical ring groove piston and engine |
| CN116971887A (en) * | 2023-07-06 | 2023-10-31 | 昆明理工大学 | Lightweight structure of high-strength diesel engine steel piston |
-
2010
- 2010-03-30 CN CN 201020144346 patent/CN201679576U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696870A (en) * | 2013-12-09 | 2014-04-02 | 潍柴动力股份有限公司 | Cylinder piston of diesel engine and diesel engine applying same |
| CN103696870B (en) * | 2013-12-09 | 2016-03-16 | 潍柴动力股份有限公司 | A kind of cylinder of diesel engine piston and apply the diesel engine of this firing chamber |
| CN104014763A (en) * | 2014-06-10 | 2014-09-03 | 山东滨州渤海活塞股份有限公司 | Method for manufacturing aluminum borate crystal whisker enhancement combustor throat embedded ring inner-cooling aluminum piston |
| CN105756801A (en) * | 2016-01-29 | 2016-07-13 | 马勒技术投资(中国）有限公司 | Gasoline engine piston adapting to high detonation pressure and containing double-cast-iron ring and inner-cooling oil duct |
| CN105909420A (en) * | 2016-06-14 | 2016-08-31 | 广西玉柴机器股份有限公司 | Combustion chamber capable of reducing soot in diesel engine cylinder |
| CN111550325A (en) * | 2020-05-29 | 2020-08-18 | 滨州渤海活塞有限公司 | High-strength light internal combustion engine piston |
| CN112761806A (en) * | 2021-01-27 | 2021-05-07 | 北京理工大学 | Oil supply structure based on accurate lubrication of integral piston |
| CN113958420A (en) * | 2021-11-12 | 2022-01-21 | 滨州渤海活塞有限公司 | Novel internal combustion engine piston and machining method thereof |
| CN113958420B (en) * | 2021-11-12 | 2022-08-16 | 滨州渤海活塞有限公司 | Novel internal combustion engine piston and machining method thereof |
| CN115306578A (en) * | 2022-08-17 | 2022-11-08 | 马勒汽车技术（中国）有限公司 | Elliptical ring groove piston and engine |
| CN115306578B (en) * | 2022-08-17 | 2024-05-21 | 马勒汽车技术（中国）有限公司 | Elliptical ring groove piston and engine |
| CN116971887A (en) * | 2023-07-06 | 2023-10-31 | 昆明理工大学 | Lightweight structure of high-strength diesel engine steel piston |
| CN116971887B (en) * | 2023-07-06 | 2024-02-23 | 昆明理工大学 | Lightweight structure of high-strength diesel engine steel 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: 20101222 Termination date: 20130330 |