CN106401784A - Piston assembly with weight reducing structure - Google Patents
Piston assembly with weight reducing structure Download PDFInfo
- Publication number
- CN106401784A CN106401784A CN201610457722.9A CN201610457722A CN106401784A CN 106401784 A CN106401784 A CN 106401784A CN 201610457722 A CN201610457722 A CN 201610457722A CN 106401784 A CN106401784 A CN 106401784A
- Authority
- CN
- China
- Prior art keywords
- piston
- sleeve
- pin
- groove
- main body
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
Abstract
The invention discloses a piston assembly with a weight reducing structure, and relates to a piston of an automobile engine. According to the piston assembly with the weight reducing structure, the piston comprises a piston body and a sleeve, wherein the piston body is provided with an upper groove and a pin base, the sleeve is provided with a lower groove, and the piston body is sleeved with the sleeve in a connected manner. A pin hole in the pin base communicates with a pin hole in the sleeve, the upper groove communicates with the lower groove so that a cooling oil cavity can be formed, and lubrication is convenient. In addition, the piston with the structure further has the beneficial effects of being high in strength, small in relative mass, good in cooling effect and convenient to assemble, full floating connection is adopted, and relative abrasion is better reduced.
Description
Technical field
The present invention relates to a kind of piston of automobile engine, particularly to a kind of piston component with Lightened structure.
Background technology
At present in the machinery industries such as automobile engine, during fabrication, conventional material has aluminium alloy, cast iron, steel to piston, and wherein aluminium alloy is widest.Aluminium alloy blank can pass through casting, and machine obtains piston finished product after adding, and high-power DID engine, material is all much to adopt cast iron materials, is all using same material molding, only considers strength character, does not consider loss of weight, cooling and lubrication.But the development trend in future is to ensure that high power output, low burn oil consumption, and on the premise of meeting reliability, quality is lighter, then friction loss is less.
In Piston and rod assembly, the effect of piston pin is to connect piston and connecting rod.Connected mode is divided into full floating to connect and semi-floating connects, and so-called full floating is connected as piston, piston pin, connecting rod are gap cooperation, controls the play of piston pin by jump ring；So-called semi-floating connects, and is that piston pin is connected using interference fit with connecting rod, piston is connected using gap with piston pin.Current fewer and feweri using semi-floating connection, got more and more using fully floating, operationally, at piston pin and pin-and-hole, abrasion most serious, stuck phenomenon, most serious will occur scuffing of cylinder bore to electromotor can occur when serious.How can seldom wear and tear, this is the problem being eager to solve.
Content of the invention
In view of the shortcomings of the prior art, the technical problem to be solved is to provide a kind of piston component with Lightened structure that can effectively reduce abrasion.
For solving prior art, the technical solution adopted in the present invention is, a kind of piston component of Lightened structure, including piston and piston pin, is characterized in that, described piston includes the piston main body with upper groove and key seat and the sleeve with lower groove, described sleeve is socketed in outside piston main body, and with sleeve interference fit, key seat and sleeve are respectively arranged with relative pin-and-hole, and pin-and-hole insertion on the pin-and-hole on key seat and sleeve, upper groove and lower groove are connected formation cooling oil chamber.
As the improvement further of the sleeve of the present invention, it is additionally provided with molybdenum bisuphide coating outside described sleeve.
As the improvement further of the piston main body of the present invention, described piston main body is steel integrated formed structure, and described sleeve is aluminium alloy sleeve barrel.
Sleeve as the present invention and the improvement further of piston main body, it is additionally provided with key seat on described sleeve, the inwall of sleeve and the wall contacts of piston main body, form gap between the key seat on key seat and piston main body on sleeve, machine oil makes piston pin and piston pin hole lubrication by above-mentioned gap.
As the improvement further of piston pin in the present invention, described piston pin includes piston pin main body and copper sheathing, and copper sheathing is socketed in the end of piston pin main body.
There is in the present invention improvement further of the piston component of above-mentioned sleeve, the pin-and-hole inner surface of sleeve is provided with annular groove, be provided with jump ring, jump ring outer surface and piston pin contacts in described annular groove, in axial direction, piston pin is carried out spacing.
There is in the present invention improvement further of the piston component of above-mentioned sleeve and piston main body, first gas ring groove, second gas ring groove and oil groove are additionally provided with piston main body, it is provided with first gas ring in first gas ring groove, is provided with second gas ring in second gas ring groove, be provided with oil ring in oil groove.
The invention has the beneficial effects as follows：The piston component of this Lightened structure, piston therein includes the piston main body with upper groove and key seat and the sleeve with lower groove, and sleeve is socketed in outside piston main body；Pin-and-hole on key seat and pin-and-hole insertion on sleeve, upper groove and lower groove are connected formation cooling oil chamber, are easy to lubricate, in addition the piston of this structure also have the advantages that intensity is high, relative mass is light, good cooling results, easy to assembly, connected using full floating, bigger minimizing relative wear.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing of use required in embodiment will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, also can obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the sectional view of the piston component in the embodiment of the present invention with Lightened structure；
Fig. 2 is the structural representation of piston main body in Fig. 1；
Fig. 3 is the structural representation of Fig. 1 middle sleeve；
Fig. 4 is the sectional view after embodiment of the present invention piston main body and piston pin connection；
Number explanation is as follows：1 piston main body, 2 combustor, groove, 4 first gas rings, 5 second gas rings, 6 oil rings, 7 times grooves, 8 sleeves, 9 piston pins, 9-1 copper sheathing, 9-2 connecting portion, 9-3 piston pin main body, 10 jump rings, 11 key seats, 12 gaps, 13 key seats, 14 jump-ring slots, 15 pin-and-holes, 16 molybdenum bisuphide coatings, 17 pin-and-holes on 3.
Specific embodiment
So that the above objects, features and advantages of the present invention is become apparent from understandable, below in conjunction with the accompanying drawings 1 and specific embodiment the present invention is further detailed explanation.
The piston component of the Lightened structure in the present embodiment, piston includes the piston main body 1 of steel integrated formed structure and the sleeve 8 of aluminum alloy material, upper groove 3 and key seat 13 is carried wherein on piston main body 1, lower groove 7 is carried on sleeve 8, and it is additionally provided with molybdenum bisuphide coating 16 outside sleeve 8, initial wear can be reduced.Piston main body 1, combustor 2 and cylinder cap constitute engine chamber 2, and combustion gas is burnt in engine chamber 2.
Described set 8 is socketed in outside piston main body 1, and key seat 13 is provided with two relative pin-and-holes 15, and sleeve 8 is provided with two relative pin-and-holes 17, and pin-and-hole 15 is connected with pin-and-hole 17, and upper groove 3 and lower groove 7 are connected formation cooling oil chamber.Upper groove 3 and lower groove 7 are all lightening grooves, the composition that is assembled together cooling chamber, and machine oil can directly be splashed to groove 3, eventually flow in lower groove 7, play cooling effect.
Pin-and-hole 17 inner surface of sleeve 8 is provided with annular groove 14, is provided with jump ring 10 in annular groove 14, jump ring 10 surface is contacted with piston pin 9, in axial direction, piston pin 9 is carried out spacing.
First gas ring groove, second gas ring groove and oil groove are additionally provided with piston main body 1, are provided with first gas ring 4 in first gas ring groove, are provided with second gas ring 5 in second gas ring groove, be provided with oil ring 6 in oil groove.First gas ring groove in the present embodiment, second gas ring groove, oil groove are all that machine adds and forms, high precision.
Key seat 11 is additionally provided with sleeve 8, the inwall of sleeve 8 and the wall contacts of piston main body 1, form gap 12 between the key seat 13 on key seat 11 and piston main body 1 on sleeve 8, machine oil is lubricated to piston pin 9 and pin-and-hole 15, pin-and-hole 17 by above-mentioned gap 12, this gap 12 is except playing the lubrication to pin-and-hole 15, pin-and-hole 17, contemplate the impact of material from environmental, allow some leeway for the mutual extruding between key seat when that is, high-temperature heating expands.
Piston pin 9 further includes copper sheathing 9-1 and piston pin main body 9-3, copper sheathing 9-1 is socketed in sleeve 9-1 two ends and is interference fit with sleeve 9-1, before assembly, need piston pin main body 9-1 to be put in nitrogen to be cooled to 60 degree, it is in shrinkage state, then again copper sheathing 9-1 is contained in the two ends of cooled piston pin main body 9-3, with the rising of temperature, copper sheathing 9-1 will be tensioned.In order to reduce stress concentration, the length ideal value of the length of copper sheathing 9-1 and connecting portion 9-2 should be equal, and when simply copper sheathing 9-1 takes lower variation of tolerance, connecting portion 9-2 should take tolerance limit value.
Although the foregoing describing the specific embodiment of invention, those skilled in the art in the art should be appreciated that these are merely illustrative of, and can make various changes or modifications to these embodiments, the principle without departing from the present invention and essence.The scope of the present invention is only limited by the claims that follow.
Claims (7)
1. a kind of piston component of Lightened structure, including piston and piston pin, it is characterized in that, described piston includes the piston main body with upper groove and key seat and the sleeve with lower groove, described sleeve is socketed in outside piston main body, relative pin-and-hole is respectively arranged with key seat and sleeve, and pin-and-hole insertion on the pin-and-hole on key seat and sleeve, upper groove and lower groove are connected formation cooling oil chamber.
2. the piston component of Lightened structure as claimed in claim 1 is it is characterised in that be additionally provided with molybdenum bisuphide coating outside described sleeve.
3. it is characterised in that described piston main body is steel integrated formed structure, described sleeve is aluminium alloy sleeve barrel to the piston component of Lightened structure as claimed in claim 1.
4. the piston component of Lightened structure as claimed in claim 1, it is characterized in that, it is additionally provided with key seat on described sleeve, during the wall contacts of the inwall of sleeve and piston main body, form gap, machine oil makes piston pin and piston pin hole lubrication by above-mentioned gap between the key seat on key seat and piston main body on sleeve.
5. it is characterised in that described piston pin includes piston pin main body and copper sheathing, copper sheathing is socketed in the end of piston pin main body to the piston component of Lightened structure as claimed in claim 1.
6. the piston component of the Lightened structure as described in Claims 1 to 5 any claim, it is characterized in that, the pin-and-hole inner surface of sleeve is provided with annular groove, in described annular groove, is provided with jump ring, jump ring outer surface and piston pin contacts, carry out spacing in axial direction to piston pin.
7. the piston component of the Lightened structure as described in Claims 1 to 5 any claim, it is characterized in that, first gas ring groove, second gas ring groove and oil groove are additionally provided with piston main body, it is provided with first gas ring in first gas ring groove, is provided with second gas ring in second gas ring groove, be provided with oil ring in oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457722.9A CN106401784A (en) | 2016-06-23 | 2016-06-23 | Piston assembly with weight reducing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457722.9A CN106401784A (en) | 2016-06-23 | 2016-06-23 | Piston assembly with weight reducing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106401784A true CN106401784A (en) | 2017-02-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610457722.9A Pending CN106401784A (en) | 2016-06-23 | 2016-06-23 | Piston assembly with weight reducing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106401784A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653896A (en) * | 2017-10-10 | 2019-04-19 | 隆巴第尼有限责任公司 | Piston and its manufacturing method |
| CN110397515A (en) * | 2019-08-13 | 2019-11-01 | 黄云锋 | A kind of Internal Combustion Engine Piston Mechanism |
| CN112901365A (en) * | 2021-02-10 | 2021-06-04 | 李斯特技术中心（上海）有限公司 | Combined type piston and engine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990004713A1 (en) * | 1988-10-21 | 1990-05-03 | Caterpillar Inc. | Engine including a piston member having a high top ring groove |
| WO1990004711A1 (en) * | 1988-10-21 | 1990-05-03 | Caterpillar Inc. | Piston assembly and piston member thereof having a predetermined compression height to diameter ratio |
| CN1041990A (en) * | 1988-10-21 | 1990-05-09 | 履带拖拉机股份有限公司 | Engine piston device and have the piston element of the forging of cooling bath |
| US5086736A (en) * | 1990-05-08 | 1992-02-11 | Mahle Gmbh | Piston head with bores |
| US5115726A (en) * | 1988-10-26 | 1992-05-26 | Metal Leve S.A. | Two-piece piston assembly |
| US5144884A (en) * | 1989-01-11 | 1992-09-08 | Cummins Engine Company, Inc. | Two-part piston assembly device |
| DE4119908A1 (en) * | 1991-06-17 | 1992-12-24 | Mahle Gmbh | Piston for IC engine - has bearing sleeve shrunk onto gudgeon pin for floating connecting rod location |
| CA2099277A1 (en) * | 1991-11-29 | 1993-05-30 | Willibald Gustav Berlinger | Piston assembly having a wrist pin bolted therein |
| CN202883142U (en) * | 2012-10-10 | 2013-04-17 | 河南省中原活塞股份有限公司 | Hinged type piston |
| CN205805747U (en) * | 2016-06-23 | 2016-12-14 | 华晨汽车集团控股有限公司 | A kind of piston component with Lightened structure |
-
2016
- 2016-06-23 CN CN201610457722.9A patent/CN106401784A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990004713A1 (en) * | 1988-10-21 | 1990-05-03 | Caterpillar Inc. | Engine including a piston member having a high top ring groove |
| WO1990004711A1 (en) * | 1988-10-21 | 1990-05-03 | Caterpillar Inc. | Piston assembly and piston member thereof having a predetermined compression height to diameter ratio |
| CN1041990A (en) * | 1988-10-21 | 1990-05-09 | 履带拖拉机股份有限公司 | Engine piston device and have the piston element of the forging of cooling bath |
| US5115726A (en) * | 1988-10-26 | 1992-05-26 | Metal Leve S.A. | Two-piece piston assembly |
| US5144884A (en) * | 1989-01-11 | 1992-09-08 | Cummins Engine Company, Inc. | Two-part piston assembly device |
| US5086736A (en) * | 1990-05-08 | 1992-02-11 | Mahle Gmbh | Piston head with bores |
| DE4119908A1 (en) * | 1991-06-17 | 1992-12-24 | Mahle Gmbh | Piston for IC engine - has bearing sleeve shrunk onto gudgeon pin for floating connecting rod location |
| CA2099277A1 (en) * | 1991-11-29 | 1993-05-30 | Willibald Gustav Berlinger | Piston assembly having a wrist pin bolted therein |
| CN202883142U (en) * | 2012-10-10 | 2013-04-17 | 河南省中原活塞股份有限公司 | Hinged type piston |
| CN205805747U (en) * | 2016-06-23 | 2016-12-14 | 华晨汽车集团控股有限公司 | A kind of piston component with Lightened structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653896A (en) * | 2017-10-10 | 2019-04-19 | 隆巴第尼有限责任公司 | Piston and its manufacturing method |
| CN110397515A (en) * | 2019-08-13 | 2019-11-01 | 黄云锋 | A kind of Internal Combustion Engine Piston Mechanism |
| CN112901365A (en) * | 2021-02-10 | 2021-06-04 | 李斯特技术中心（上海）有限公司 | Combined type piston and engine |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |