CN102943717A - Steel roof aluminum skirt combinational piston - Google Patents
Steel roof aluminum skirt combinational piston Download PDFInfo
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- CN102943717A CN102943717A CN2012105194447A CN201210519444A CN102943717A CN 102943717 A CN102943717 A CN 102943717A CN 2012105194447 A CN2012105194447 A CN 2012105194447A CN 201210519444 A CN201210519444 A CN 201210519444A CN 102943717 A CN102943717 A CN 102943717A
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- piston
- skirt
- piston crown
- steel roof
- crown
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Abstract
The invention discloses a steel roof aluminum skirt combinational piston. The steel roof aluminum skirt combinational piston comprises a piston head and a piston skirt, wherein the piston head and the piston skirt are in combinational connection through a nut and a bolt. The steel roof aluminum skirt combinational piston is characterized in that the bolt or the nut and the piston head are integrated as a whole. By the steel roof aluminum skirt combinational piston, the bonding strength of the piston head and the piston skirt is enhanced, the risk caused by matching is reduced or eliminated, an assembling headspace is reduced, and the structural strength of the piston is improved.
Description
Technical field
The invention belongs to piston and make field, particularly a kind of combination of steel roof aluminum piston skirt.
Background technique
Along with the development of engine technology, to improving constantly of engine power and reinforcement index request, so that the detonation pressure that engine piston bears also progressively increases, the operating temperature that piston head bears constantly raises.All-aluminium piston has been difficult to satisfy the demand of development of engine gradually, and in order to guarantee motor at work, piston head can bear High Temperature High Pressure, piston skirt also can bear the effect of high side pressure power, and piston weight can not increase too much.
In order to address the above problem, whole forging steel piston has appearred, although whole forging steel piston structural strength is better, the piston weight increase is large and processing is very difficult.Steel crown and aluminum skirt piston occurred, the requirement that can satisfy on the structural strength of this piston can make again the weight increase of piston less thereupon.As shown in Figure 1, its piston crown of steel crown and aluminum skirt piston and piston skirt are fixed together by bolt and nut independently, but the space that this independent bolt and nut needs is larger, has reduced the structural strength of piston, and has increased the risk of Joint failure.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of combination of steel roof aluminum piston skirt, combination of steel roof aluminum piston skirt provided by the invention improves the adhesive strength of piston crown and piston skirt, reduce to push up, skirt and bolt cooperate the risk that may exist, also dwindle simultaneously the assembling headspace, improve piston structure intensity.
For solving the problems of the technologies described above, the invention provides a kind of combination of steel roof aluminum piston skirt, comprise piston crown and piston skirt, described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described bolt and described piston crown are integrated.
Preferably, the external diameter of described piston crown is less than or equal to 200mm, and described bolt is located at the piston crown center, and described bolt quantity is 1.
Preferably, described piston crown external diameter is greater than 200mm, and described bolt quantity is more than 2, and described bolt distributes along described piston crown even circumferential.
The present invention also provides a kind of combination of steel roof aluminum piston skirt, comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described nut and described piston crown are integrated.
Preferably, described nut is the tapped hole that is located at the piston crown below.
Preferably, the external diameter of described piston crown is less than or equal to 200mm, and described tapped hole is located at the piston crown center, and described tapped hole quantity is 1.
Preferably, described piston crown external diameter is greater than 200mm, and described tapped hole quantity is more than 2, and described tapped hole distributes along described piston crown even circumferential.
Combination of steel roof aluminum piston skirt provided by the present invention, compared with prior art, be designed to one owing to be used for connecting the bolt of piston crown and piston skirt or nut and piston crown, improved the two adhesive strength of piston crown and piston skirt, reduced to eliminate and cooperated the risk that may exist, simultaneously also dwindle the assembling headspace, improved the structural strength of piston; When piston crown external diameter during greater than 200mm, a plurality of bolt and nuts distribute along the piston crown even circumferential, can improve the adhesive strength between piston crown and the piston skirt, have reduced the Joint failure risk.
Description of drawings
Fig. 1 is the combination of steel roof aluminum piston skirt structural representation that connects by independent bolt and nut;
Fig. 2 is the combined piston schematic diagram that nut and piston crown are integrated;
Fig. 3 is the combined piston schematic diagram that bolt and piston crown are integrated.
Among the figure,
1, piston crown; 2, piston skirt; 3, independent bolt and nut; 4, tapped hole;
5, bolt; 6, nut.
Embodiment
In order to make those skilled in the art person understand better the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
See also Fig. 2, a kind of combination of steel roof aluminum piston skirt provided by the present invention, comprise piston crown 1 and piston skirt 2, be provided with tapped hole 4 below piston crown 1,2 are provided with the hole corresponding with tapped hole 4 in the piston skirt, and bolt 5 matches with tapped hole 4, bolt 5 passes on the piston skirt 2 hole corresponding with tapped hole 4, piston crown 1 and piston skirt 2 are fixed together, because tapped hole 4 is arranged on the piston crown 1, have improved the adhesive strength of piston crown 1 with piston skirt 2.When the external diameter of piston crown 1 was less than or equal to 200mm, tapped hole 4 was arranged on the central position of piston crown 1, and tapped hole is one.When the external diameter of piston crown 1 during greater than 200mm, the number of tapped hole 4 is 2 or 4, and tapped hole 4 distributes along piston crown 1 even circumferential.
See also Fig. 2, another kind of combination of steel roof aluminum piston skirt provided by the present invention, comprise piston crown 1 and piston skirt 2, below piston crown 1, be provided with bolt 5,2 are provided with the hole corresponding with bolt 5 in the piston skirt, bolt 5 passes on the piston skirt 2 hole corresponding with bolt 5, nut 6 matches with bolt 5, nut 6 is tightened on the bolt 5, piston crown 1 and piston skirt 2 are fixed together, because bolt 5 is designed to one with piston crown 1, improved the adhesive strength of piston crown 1 with piston skirt 2.When the external diameter of piston crown 1 was less than or equal to 200mm, bolt 5 was arranged on the central position of piston crown 1, and bolt 5 quantity are one.When the external diameter of piston crown 1 during greater than 200mm, the quantity of bolt 5 is 2 or 4, and bolt 5 distributes along piston crown 1 even circumferential below piston crown 1.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use invention.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a combination of steel roof aluminum piston skirt comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described bolt and described piston crown are integrated.
2. combination of steel roof aluminum piston skirt according to claim 1 is characterized in that, the external diameter of described piston crown is less than or equal to 200mm, and described bolt is located at the piston crown center, and described bolt quantity is 1.
3. combination of steel roof aluminum piston skirt according to claim 1 is characterized in that, described piston crown external diameter is greater than 200mm, and described bolt quantity is more than 2, and described bolt distributes along described piston crown even circumferential.
4. a combination of steel roof aluminum piston skirt comprises piston crown and piston skirt, and described piston crown and described piston skirt are connected by bolts and nuts, it is characterized in that, described nut and described piston crown are integrated.
5. combination of steel roof aluminum piston skirt according to claim 4 is characterized in that, described nut is the tapped hole that is located at the piston crown below.
6. combination of steel roof aluminum piston skirt according to claim 5 is characterized in that, the external diameter of described piston crown is less than or equal to 200mm, and described tapped hole is located at the piston crown center, and described tapped hole quantity is 1.
7. combination of steel roof aluminum piston skirt according to claim 5 is characterized in that, described piston crown external diameter is greater than 200mm, and described tapped hole quantity is more than 2, and described tapped hole distributes along described piston crown even circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105194447A CN102943717A (en) | 2012-12-06 | 2012-12-06 | Steel roof aluminum skirt combinational piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105194447A CN102943717A (en) | 2012-12-06 | 2012-12-06 | Steel roof aluminum skirt combinational piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943717A true CN102943717A (en) | 2013-02-27 |
Family
ID=47726689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105194447A Pending CN102943717A (en) | 2012-12-06 | 2012-12-06 | Steel roof aluminum skirt combinational piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943717A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180003A1 (en) * | 2014-05-26 | 2015-12-03 | 滨州东海龙活塞有限公司 | Threaded welding type integral forged steel piston |
| CN107524542A (en) * | 2017-09-04 | 2017-12-29 | 常州中车柴油机零部件有限公司 | A kind of diesel engine composite piston |
| CN109681341A (en) * | 2019-02-15 | 2019-04-26 | 广西玉柴机器股份有限公司 | Piston of gas engine |
| CN114251186A (en) * | 2021-12-22 | 2022-03-29 | 湖南江滨机器（集团）有限责任公司 | All-steel piston machining method and all-steel piston machined by same |
Citations (9)
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|---|---|---|---|---|
| WO1983002300A1 (en) * | 1981-12-28 | 1983-07-07 | Alco Power Inc | Prestressed composite piston |
| DE3719469A1 (en) * | 1987-06-11 | 1988-12-29 | Mahle Gmbh | BUILT LIQUID-COOLED PISTON FOR COMBUSTION ENGINES |
| CN1714232A (en) * | 2002-12-06 | 2005-12-28 | 玛勒有限公司 | Multipart cooled piston for an internal combustion engine |
| CN101253322A (en) * | 2005-09-01 | 2008-08-27 | 马勒国际公司 | Two-piece piston for an internal combustion engine |
| CN101466937A (en) * | 2006-06-13 | 2009-06-24 | 马勒国际公司 | Multi-part cooled piston for an internal combustion engine |
| CN201433826Y (en) * | 2009-06-10 | 2010-03-31 | 北京中清能发动机技术有限公司 | Piston of two-stroke crank slider mechanism internal-combustion engine and internal-combustion engine of crank slider mechanism |
| CN202348465U (en) * | 2011-11-11 | 2012-07-25 | 武汉理工大学 | Optimized variable compression ratio piston for internal combustion engine |
| CN202431386U (en) * | 2011-11-30 | 2012-09-12 | 中国北车集团大连机车研究所有限公司 | Diesel engine piston |
| CN203035366U (en) * | 2012-12-06 | 2013-07-03 | 湖南江滨机器（集团）有限责任公司 | Steel top and aluminum skirt combining piston |
-
2012
- 2012-12-06 CN CN2012105194447A patent/CN102943717A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983002300A1 (en) * | 1981-12-28 | 1983-07-07 | Alco Power Inc | Prestressed composite piston |
| DE3719469A1 (en) * | 1987-06-11 | 1988-12-29 | Mahle Gmbh | BUILT LIQUID-COOLED PISTON FOR COMBUSTION ENGINES |
| CN1714232A (en) * | 2002-12-06 | 2005-12-28 | 玛勒有限公司 | Multipart cooled piston for an internal combustion engine |
| CN101253322A (en) * | 2005-09-01 | 2008-08-27 | 马勒国际公司 | Two-piece piston for an internal combustion engine |
| CN101466937A (en) * | 2006-06-13 | 2009-06-24 | 马勒国际公司 | Multi-part cooled piston for an internal combustion engine |
| CN201433826Y (en) * | 2009-06-10 | 2010-03-31 | 北京中清能发动机技术有限公司 | Piston of two-stroke crank slider mechanism internal-combustion engine and internal-combustion engine of crank slider mechanism |
| CN202348465U (en) * | 2011-11-11 | 2012-07-25 | 武汉理工大学 | Optimized variable compression ratio piston for internal combustion engine |
| CN202431386U (en) * | 2011-11-30 | 2012-09-12 | 中国北车集团大连机车研究所有限公司 | Diesel engine piston |
| CN203035366U (en) * | 2012-12-06 | 2013-07-03 | 湖南江滨机器（集团）有限责任公司 | Steel top and aluminum skirt combining piston |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180003A1 (en) * | 2014-05-26 | 2015-12-03 | 滨州东海龙活塞有限公司 | Threaded welding type integral forged steel piston |
| CN107524542A (en) * | 2017-09-04 | 2017-12-29 | 常州中车柴油机零部件有限公司 | A kind of diesel engine composite piston |
| CN109681341A (en) * | 2019-02-15 | 2019-04-26 | 广西玉柴机器股份有限公司 | Piston of gas engine |
| CN114251186A (en) * | 2021-12-22 | 2022-03-29 | 湖南江滨机器（集团）有限责任公司 | All-steel piston machining method and all-steel piston machined by same |
| CN114251186B (en) * | 2021-12-22 | 2024-02-20 | 湖南江滨机器（集团）有限责任公司 | All-steel piston machining method and all-steel piston machined by method |
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Application publication date: 20130227 |