CN205297761U - Lubricated piston of reinforcing pinhole - Google Patents
Lubricated piston of reinforcing pinhole Download PDFInfo
- Publication number
- CN205297761U CN205297761U CN201521074880.3U CN201521074880U CN205297761U CN 205297761 U CN205297761 U CN 205297761U CN 201521074880 U CN201521074880 U CN 201521074880U CN 205297761 U CN205297761 U CN 205297761U
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- CN
- China
- Prior art keywords
- piston
- piston pin
- utility
- oil
- model
- 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
- 230000003014 reinforcing effect Effects 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000005461 lubrication Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 43
- 239000010687 lubricating oil Substances 0.000 description 12
- 230000001050 lubricating effect Effects 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a lubricated piston of reinforcing pinhole belongs to the engine technology field. The utility model provides a piston pin and the piston pin hole of present existence the technical problem of interlock trouble easily takes place. The utility model discloses a cooling oil pocket oil outlet, cooling oil pocket inlet port and piston pin hole, piston pin hole are divided into supporting region and non - supporting region, and the non - supporting region of piston pin hole is equipped with two oil storage tanks, and cooling oil pocket oil outlet has a perfect understanding with two oil storage tanks respectively with cooling oil pocket inlet port mutually. Two oil storage tanks set up respectively on the key seat of both sides. The utility model discloses the mainly used engine.
Description
Technical field
This utility model relates to the piston strengthening pin bore lubrication, belongs to technical field of engines.
Background technology
The lubricating oil of present stage piston pin and pin-and-hole is essentially from two places: one, and the lubricating oil of piston cooling nozzle ejection is splashed on piston pin through piston cavity, flows into supporting region; Two, the lubricating oil that oil ring scrapes on cylinder sleeve flows into supporting region by piston face-port. Smaller by the lubricants capacity of this two entrance supporting region, when supporting region load is higher, oil film is not easily formed, and dry friction easily occurs between piston pin and piston hole, causes that piston pin is engaged with pin-and-hole.
Under the prior art, the lubricating oil of lubricating oil approach one is first to be splashed to piston pin surface, then passes through the fit clearance inflow supporting region of piston pin and pin-and-hole; The lubricating oil of approach two was scraped from inner surface of cylinder liner by oil ring before this, then passes through face-port and flows into pin-and-hole, flows into supporting region through fit clearance after. Because fit clearance theoretical value is typically between 0.01��0.05, the lubricants capacity of inflow is little. When pin-and-hole ratio presses through high, lubricants capacity can not meet lubricating requirement, and piston pin is engaged fault occurrence risk and steeply rises with pin-and-hole.
Utility model content
The purpose of this utility model is in that to solve the drawbacks described above that prior art exists, it is proposed that a kind of piston strengthening pin bore lubrication, it is possible to bring more lubricating oil into pin-and-hole supporting region when piston pin rotates, and greatly improves piston pin lubricating condition.
This utility model is to adopt following technical scheme to realize: a kind of piston strengthening pin bore lubrication, including cooling oil chamber oil outlet, cooling oil chamber fuel feed hole and piston pin hole, piston pin hole is divided into supporting region and non-bearing district, the non-bearing district of piston pin hole is provided with two oil storage tanks, cooling oil chamber oil outlet and cooling oil chamber fuel feed hole and connects with two oil storage tanks respectively. On the key seat that two oil storage tanks are respectively provided at both sides.
As preferably, described oil storage tank is semicircle, and its two ends are by arc transition to supporting region.
As preferably, being provided with fillet bottom described oil storage tank.
The beneficial effects of the utility model are:
This utility model under minimum change, can increase a lubricating oil route of entry, and the increase of oil storage tank is substantially improved the lubricating condition of piston pin, it is to avoid the risk that piston pin is engaged with pin-and-hole, can be applicable to the steel pistons of high detonation pressure engine or aluminium recovery.
Accompanying drawing explanation
Fig. 1 is the upward view of piston;
Fig. 2 is the front section view of piston;
Fig. 3 is the D-D profile of Fig. 2;
In figure: 1 cooling oil chamber oil outlet 2 cooling oil chamber fuel feed hole 3 oil storage tank 4 cooling oil chamber 5 circular arc 6 supporting region 7 non-bearing district.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described further.
As it is shown on figure 3, for supercharging inter-cooling engine, piston is generally with cooling oil chamber 4. As it is shown in figure 1, piston base has a cooling oil chamber fuel feed hole 2, collect the lubricating oil of piston cooling nozzle ejection, have a cooling oil chamber oil outlet 1, the lubricating oil in cooling oil chamber is discharged piston, to take away heat.
Coordinating with piston pin on piston, the bore bearing piston pin counteracting force is piston pin hole, and piston pin therein is to connect piston and connecting rod, and the power born by piston passes to the cylindrical parts of connecting rod. According to computer sim-ulation and result of the test, the scope of piston pin hole supporting region 6 is generally 120 �㡫150 ��, is primarily subjected to the explosion pressure that electromotor expansion stroke piston passes over, as it is shown on figure 3, be piston pin hole supporting region in the scope of angle E. Non-bearing district 7 is primarily subjected to the reciprocal inertia force of piston set. The explosion pressure that reciprocal inertia force produces much smaller than burning, the load of Gu Feichengzaiqu is much smaller than the load of supporting region.
This utility model utilizes the feature that non-bearing district load is little, increase in non-bearing district one enter with cooling oil chamber, oil storage tank 3 that spill port connects, to improve piston pin lubricating condition. Because the load in non-bearing district is little, after increasing oil storage tank, the impact of piston boss rigidity can be ignored, equally because, after increasing oil storage tank, non-bearing district can also accept than the rising of pressure (loading force that unit are is born, unit is MPa).
As shown in Figures 2 and 3, oil storage tank is semicircle, and circular arc 5 is transitioned into supporting region, and oil storage tank cannot extend into supporting region. The ratio range of oil storage tank degree of depth A and piston pin hole diameter is 3%��4%, and oil storage tank width B and piston boss One-sided Widths ratio range are 40%��50%. Excessive, can cause that key seat rigidity reduces too much; Too small, oil storage DeGrain. The fillet of 1-3mm is had, to reduce stress concentration bottom oil storage tank. Every side key seat has an oil storage tank, enters with cooling oil chamber respectively, spill port connects, and through degree of depth C is 1-3mm.
This utility model by piston pin hole non-bearing district increase by two oil storage tanks connected with cooling oil chamber oil inlet and oil return hole respectively, entered by cooling oil chamber, spill port collect lubricating oil. Piston pin brings the lubricating oil in oil storage tank into pin-and-hole supporting region when rotating, and greatly improves piston pin lubricating condition.
Certainly, foregoing is only preferred embodiment of the present utility model, it is impossible to be considered for limiting the scope of embodiments to utility model. This utility model is also not limited to the example above, and those skilled in the art are made impartial change and improvement etc. in essential scope of the present utility model, all should belong to this utility model patent covering scope.
Claims (3)
1. the piston strengthening pin bore lubrication, including cooling oil chamber oil outlet (1), cooling oil chamber fuel feed hole (2) and piston pin hole, piston pin hole is divided into supporting region (6) and non-bearing district (7), it is characterized in that: the non-bearing district (7) of piston pin hole is provided with two oil storage tanks (3), cooling oil chamber oil outlet (1) and cooling oil chamber fuel feed hole (2) and connects with two oil storage tanks (3) respectively.
2. the piston of enhancing pin bore lubrication according to claim 1, it is characterised in that: described oil storage tank (3) is semicircle, and its two ends are transitioned into supporting region (6) by circular arc (5).
3. the piston of enhancing pin bore lubrication according to claim 1 and 2, it is characterised in that: described oil storage tank (3) bottom is provided with fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074880.3U CN205297761U (en) | 2015-12-21 | 2015-12-21 | Lubricated piston of reinforcing pinhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074880.3U CN205297761U (en) | 2015-12-21 | 2015-12-21 | Lubricated piston of reinforcing pinhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297761U true CN205297761U (en) | 2016-06-08 |
Family
ID=56471078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521074880.3U Expired - Fee Related CN205297761U (en) | 2015-12-21 | 2015-12-21 | Lubricated piston of reinforcing pinhole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297761U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917013A (en) * | 2016-10-11 | 2018-04-17 | 现代自动车株式会社 | Piston assembly with improved greasy property |
| WO2019007897A1 (en) | 2017-07-04 | 2019-01-10 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine, piston for an internal combustion engine, piston blank for producing the piston, and casting mold or forging die for producing a piston blank |
-
2015
- 2015-12-21 CN CN201521074880.3U patent/CN205297761U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917013A (en) * | 2016-10-11 | 2018-04-17 | 现代自动车株式会社 | Piston assembly with improved greasy property |
| WO2019007897A1 (en) | 2017-07-04 | 2019-01-10 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine, piston for an internal combustion engine, piston blank for producing the piston, and casting mold or forging die for producing a piston blank |
| DE102017211335A1 (en) | 2017-07-04 | 2019-01-10 | Federal-Mogul Nürnberg GmbH | Method for producing a piston for an internal combustion engine, piston for an internal combustion engine, piston blank for producing the piston, and casting mold or forging die for producing a piston blank |
| CN110869601A (en) * | 2017-07-04 | 2020-03-06 | 菲特尔莫古纽伦堡有限公司 | Method for producing a piston for an internal combustion engine, piston blank for producing a piston, and casting or forging die for producing a piston blank |
| US11415076B2 (en) | 2017-07-04 | 2022-08-16 | Federal-Mogul Nurnberg Gmbh | Method for producing a piston for an internal combustion engine, piston for an internal combustion engine, piston blank for producing the piston, and casting mold or forging die for producing a piston blank |
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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: 20160608 |