CN203670021U - Lubricating structure of connecting rod small-end bushing - Google Patents
Lubricating structure of connecting rod small-end bushing Download PDFInfo
- Publication number
- CN203670021U CN203670021U CN201320709859.0U CN201320709859U CN203670021U CN 203670021 U CN203670021 U CN 203670021U CN 201320709859 U CN201320709859 U CN 201320709859U CN 203670021 U CN203670021 U CN 203670021U
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- China
- Prior art keywords
- connecting rod
- piston
- small end
- rod small
- oil
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- 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 - Lifetime
Links
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 208000004141 microcephaly Diseases 0.000 claims abstract description 9
- 210000000707 wrist Anatomy 0.000 claims description 13
- 238000013461 design Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 59
- 239000000314 lubricant Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method 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
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model provides a lubricating structure of connecting rod microcephaly bush, includes piston body (1), piston pin (2) and connecting rod microcephaly (3), pressure equipment has connecting rod bush (4) on the microcephaly hole of connecting rod microcephaly (3), and connecting rod microcephaly (3) are connected with piston body (1) through piston pin (2), piston body (1) on be provided with cooling oil duct and oil inlet channel (7) and oil outlet channel (6) that are linked together with this cooling oil duct, on the inner wall of piston body (1) oil outlet channel (6) side division be equipped with oblique oilhole (8) that the cooling oil duct is linked together. Simple structure, modern design, fine assurance connecting rod microcephaly bush lubricated and dispel the heat, and can adjust the cooling temperature of piston cooling oil duct well.
Description
Technical field
The utility model relates to a kind of lining of connecting rod small end structure, relates in particular a kind of lubricating structure of lining of connecting rod small end, belongs to piston of automobile engine group lubricating component technical field.
Background technique
Lining of connecting rod small end is directly connecting piston and connecting rod in motor, in the process of transmitting force and moment, plays an important role; Lining of connecting rod small end requires that bearing capacity is large, compact structure, manufacturing process are good, and has good interchangeability and convenient for maintaining, and the quality of its greasy property has important impact to the working condition of motor.The lubricated employing conventionally of lining of connecting rod small end splash system lubrication, splash system lubrication is to have the lubricated oil droplet splashing when oil collecting hole is collected engine running on connecting rod small end top, forms wedge gap by the swing of connecting rod small end between wrist pin and lining of connecting rod small end, but, this splash system lubrication is passive discontinuous lubricating, the matching gap of wrist pin and lining of connecting rod small end is very little, the lubricants capacity of storage is limited, being only suitable for the motor that detonation pressure is lower uses, along with the development trend of the high detonation pressure of motor, this lubricating system can not meet lining of connecting rod small end lubricating requirement, the discontinuity of oil film can cause wrist pin directly to contact with lining of connecting rod small end, produce high temperature, thereby cause connecting rod small end hole and wrist pin surface of contact that " interlock " occurs, too high temperature also can be conducted and be made wrist pin nose end that same damage also can occur by heat, when serious, even cause piston scraping.
Chinese patent notice of authorization number: CN201050413Y, notice of authorization day: April 23 in 2008, day, were called: in the utility model patent of " a kind of engine piston ", disclose a kind of engine piston, comprise piston body, the oil input channel and the oil road that in piston body, are provided with cooling oil duct and are communicated with this cooling oil duct, on the inwall of piston body, be respectively equipped with two inclined oil hole of air that are communicated with cooling oil duct, these two inclined oil hole of air are respectively towards the connecting rod small end end that is arranged in piston cavity, and connecting rod small end is provided with oil through.This kind of engine piston, lubricated more abundant to the surface of contact between piston and connecting rob bushing.But in piston, jacking oil duct side has also been provided with inclined oil hole of air in this model utility, make parts of lubricating oil also not carry out coolingly just flowing out from this inclined oil hole of air to piston, increase the heat load of piston one side of something, reduce piston reliability; In this model utility, on connecting rod small end, be provided with oil through, along with the continuous lifting of engine load, more and more employing steel pistons than before aluminium piston weight have increased a lot, the tension load that connecting rod small end bears is more and more higher, therefore offers oil through and reduced the reliability of connecting rod at connecting rod small end.
Summary of the invention
The purpose of this utility model be the piston one side of something having increased for existing lining of connecting rod small end lubricating structure heat load, reduced the problems such as the reliability of connecting rod, a kind of lubricating structure of lining of connecting rod small end is provided.
For achieving the above object, technical solution of the present utility model is: a kind of lubricating structure of lining of connecting rod small end, comprise piston only, wrist pin and connecting rod small end, on the microcephaly hole of described connecting rod small end, be pressed with connecting rob bushing, connecting rod small end is connected with piston only by wrist pin, the oil input channel and the oil road that on described piston only, are provided with cooling oil duct and are connected with this cooling oil duct, the other inclined oil hole of air being connected with cooling oil duct that offers of oil road on the inwall of described piston only.
Described inclined oil hole of air is positioned on the midplane on piston only Inner top, and inclined oil hole of air is towards connecting rod swing direction.
The diameter of described inclined oil hole of air is 4mm.
Compared with prior art, the beneficial effects of the utility model are:
1. simple in structure, novel in design, well guarantee the lubricated of lining of connecting rod small end and heat radiation, and the chilling temperature of regulating piston cooling oil duct well.The other inclined oil hole of air being connected with cooling oil duct that offers of the utility model oil road on the inwall of piston only, the machine oil ejecting from inclined oil hole of air sprays connecting rod small end and wrist pin, oil groove by connecting rob bushing imports rubbing surface, realizes effectively lubricated and heat radiation of lining of connecting rod small end; Meanwhile, test of many times proves, the utility model also has obvious effect to the chilling temperature that regulates piston cooling oil passage, makes piston top temperature more reasonable, has reduced piston Inner top mean temperature.
2. the utility model only offers inclined oil hole of air on oil road side, has improved the cooling effect of piston head, has improved piston reliability; And connecting rod small end is not established oil through, improve the reliability of connecting rod small end, reduce technology difficulty.
Accompanying drawing explanation
Fig. 1 is the worm's eye view of engine piston in the utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is connecting rob bushing sectional view in the utility model.
In figure, piston only 1, wrist pin 2, connecting rod small end 3, connecting rob bushing 4, lining oil groove 5, oil road 6, oil input channel 7, inclined oil hole of air 8.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the utility model is described in further detail.
Referring to Fig. 1-Fig. 4, a kind of lubricating structure of lining of connecting rod small end, comprises piston only 1, wrist pin 2 and connecting rod small end 3, on the microcephaly hole of described connecting rod small end 3, is pressed with connecting rob bushing 4, and connecting rod small end 3 is connected with piston only 1 by wrist pin 2.The oil input channel 7 and the oil road 6 that on described piston only 1, are provided with cooling oil duct and are connected with this cooling oil duct, the other inclined oil hole of air 8 being connected with cooling oil duct that offers of oil road 6 on the inwall of piston only 1; Described inclined oil hole of air 8 is positioned on the midplane on piston only 1 Inner top, and inclined oil hole of air 8 is towards connecting rod swing direction, and cold oil is by the lubricated lining of connecting rod small end of inclined oil hole of air 8.Described inclined oil hole of air 8 can not be excessive, in order to avoid affect piston intensity, can not be too small, can affect lubricants capacity; Preferably, the diameter of described inclined oil hole of air 8 is 4mm, has taken into account like this piston intensity and lubricants capacity.
Referring to Fig. 1-Fig. 4, when work, machine oil sprays into oil input channel 7, and after cooling oil duct is cooling to piston only 1, a part enters piston only 1 inner chamber from oil road 6, and another part sprays in inclined oil hole of air 8 along the direction of arrow, thereby is sprayed on the outer wall of connecting rod small end 3; On connecting rod small end 3, do not bore oil collecting hole, machine oil imports rubbing surface by lining oil groove 5, thereby realizes effectively lubricated and heat radiation of lining of connecting rod small end.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, said structure all should be considered as belonging to protection domain of the present utility model.
Claims (2)
1. the lubricating structure of a lining of connecting rod small end, comprise piston only (1), wrist pin (2) and connecting rod small end (3), on the microcephaly hole of described connecting rod small end (3), be pressed with connecting rob bushing (4), connecting rod small end (3) is connected with piston only (1) by wrist pin (2), the oil input channel (7) and the oil road (6) that on described piston only (1), are provided with cooling oil duct and are connected with this cooling oil duct, it is characterized in that: the other inclined oil hole of air (8) being connected with cooling oil duct that offers of oil road on the inwall of piston only (1) (6), described inclined oil hole of air (8) is positioned on the midplane on piston only (1) Inner top, and inclined oil hole of air (8) is towards connecting rod swing direction.
2. the lubricating structure of a kind of lining of connecting rod small end according to claim 1, is characterized in that: the diameter of described inclined oil hole of air (8) is 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320709859.0U CN203670021U (en) | 2013-11-12 | 2013-11-12 | Lubricating structure of connecting rod small-end bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320709859.0U CN203670021U (en) | 2013-11-12 | 2013-11-12 | Lubricating structure of connecting rod small-end bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670021U true CN203670021U (en) | 2014-06-25 |
Family
ID=50966329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320709859.0U Expired - Lifetime CN203670021U (en) | 2013-11-12 | 2013-11-12 | Lubricating structure of connecting rod small-end bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670021U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228647A (en) * | 2016-03-23 | 2017-10-03 | 新昌县达科机电产品设计有限公司 | Piston pin connecting rob bushing gap size positions accessory part |
| CN110359995A (en) * | 2019-06-28 | 2019-10-22 | 广西玉柴机器股份有限公司 | A kind of linkage using the cooling piston of oil duct |
| CN114251152A (en) * | 2020-09-22 | 2022-03-29 | 马勒汽车技术（中国）有限公司 | Lubrication mechanism for pin joint pair of internal combustion engine |
-
2013
- 2013-11-12 CN CN201320709859.0U patent/CN203670021U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228647A (en) * | 2016-03-23 | 2017-10-03 | 新昌县达科机电产品设计有限公司 | Piston pin connecting rob bushing gap size positions accessory part |
| CN110359995A (en) * | 2019-06-28 | 2019-10-22 | 广西玉柴机器股份有限公司 | A kind of linkage using the cooling piston of oil duct |
| CN114251152A (en) * | 2020-09-22 | 2022-03-29 | 马勒汽车技术（中国）有限公司 | Lubrication mechanism for pin joint pair of internal combustion engine |
| CN114251152B (en) * | 2020-09-22 | 2022-12-20 | 马勒汽车技术（中国）有限公司 | Lubrication mechanism for pin joint pair of internal combustion engine |
| US12007024B2 (en) | 2020-09-22 | 2024-06-11 | Mahle Automotive Technologies (China) Co., Ltd. | Lubricating mechanism of pin connection pair of internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
|
| CX01 | Expiry of patent term |