CN102140948A - Eccentric shaft of variable valve lift automobile engine - Google Patents
Eccentric shaft of variable valve lift automobile engine Download PDFInfo
- Publication number
- CN102140948A CN102140948A CN2011100776184A CN201110077618A CN102140948A CN 102140948 A CN102140948 A CN 102140948A CN 2011100776184 A CN2011100776184 A CN 2011100776184A CN 201110077618 A CN201110077618 A CN 201110077618A CN 102140948 A CN102140948 A CN 102140948A
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- Prior art keywords
- eccentric
- shaft
- eccentric shaft
- group
- axle journal
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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.)
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- 239000000314 lubricant Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 abstract description 60
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 210000003739 neck Anatomy 0.000 abstract 7
- 230000001050 lubricating effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Valve Device For Special Equipments (AREA)
Abstract
The invention relates to an eccentric shaft of a variable valve lift automobile engine, comprising the eccentric shaft, a main oil duct, oil plugging parts, a group of shaft necks and a group of eccentric wheels, wherein the main oil duct extends along the direction of a central axis of the eccentric shaft and penetrates through the integral eccentric shaft; the oil plugging parts are arranged on both ends of the main oil duct; the group of eccentric wheels are arranged on the eccentric shaft and play roles in fixing the eccentric shaft; and the group of eccentric wheels are used for regulating the lift quantity of a valve. The eccentric shaft of the variable valve lift automobile engine is characterized in that the first shaft neck positioned on the end part of the eccentric shaft is provided with a first shaft neck oil groove; lubricating oil reaches the first shaft neck oil groove from a main oilway of a cylinder cover; the first shaft neck oil groove is communicated with the main oil duct through a group of oil holes; the main oil duct is communicated with the outer surface of each shaft neck through a first auxiliary oil duct; and the main oil duct is communicated with the outer surface of each eccentric wheel through a second auxiliary oil duct. The structure can better realize the lubrication of the shaft necks of the eccentric shaft and the eccentric wheels and prolong the service life of the eccentric shaft; and in addition, the invention has simple structure and good manufacturability and can be widely applied to the variable valve lift automobile engine.
Description
Technical field
The present invention relates to a kind of motor eccentric shaft, especially relate to lift range variable car engine eccentric drive shaft.
Background technique
At present, the changeable air valve engine technology is more and more ripe, and the structure of changeable air valve is also varied.A kind of as wherein of eccentric shaft, because it is simple in structure, it is little to take up room, and is using on increasing lift range variable.The lubricating structure of eccentric shaft is also a lot, as China Patent No. is that CN200810212726.6 discloses a kind of lubricating fitting, be used for valve actuating gear, this valve actuating gear, comprise camshaft that is arranged on the cylinder head and a plurality of cams that are arranged at above-mentioned camshaft at each valve that is arranged at above-mentioned cylinder head, and be situated between and the rotational motion of above-mentioned cam be transformed to the on-off action of above-mentioned valve by sliding contact parts with the side face sliding contact of above-mentioned cam, this lubricating fitting, comprise, be formed at the oil circuit of the lubricant oil of above-mentioned camshaft inside; The side face upper shed of a side cam in the above-mentioned cam that adjoins each other, and the spraying hole of the lubricant oil that is communicated with above-mentioned oil circuit; Be provided with the wall body of depressed part, this depressed part is when an above-mentioned side's cam is moved to above-mentioned spraying hole and does not point to the position of above-mentioned sliding contact parts, collection is from the lubricant oil of above-mentioned spraying hole ejection, and is directed to the side face of the opposing party's cam in the above-mentioned cam that adjoins each other.Adopt the present invention, can reduce the oil mass of lubricant oil, can guarantee the lubricity of cam side face simultaneously.This structure can not provide sufficient lubricating oil to eccentric shaft, causes shorten the working life of eccentric shaft.
Summary of the invention
The purpose of this invention is to provide a kind of lift range variable car engine eccentric drive shaft, solve the not good problem of present motor eccentric shaft lubrication effect.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lift range variable car engine eccentric drive shaft, it comprise eccentric shaft, along the central axial direction of eccentric shaft extend and run through whole eccentric shaft main oil gallery, be arranged on the stifled oily part at main oil gallery two ends and be arranged on the one group of axle journal that plays fixed eccentric shaft on the eccentric shaft and regulate one group of eccentric wheel of valve lift amount; First axle journal of described eccentric shaft end is provided with the first axle journal oil groove, and lubricant oil arrives the first axle journal oil groove from the cylinder cap working connection, communicates by one group of oilhole between the first axle journal oil groove and main oil gallery; All have the first secondary oil duct to communicate between main oil gallery and each axle journal outer surface, main oil gallery all has the second secondary oil duct to communicate with each eccentric wheel outer surface.
For better allowing lubricant oil enter main oil gallery, the described first axle journal oil groove is a circular ring, and the one group of oilhole that communicates between the first axle journal oil groove and main oil gallery is one group of vertical radial hole.
Preferably, described one group of oilhole be 4 along the equally distributed radial hole of eccentric shaft circumference.
Be better fixed eccentric shaft, the end that described eccentric shaft axle journal correspondence is arranged on eccentric shaft reaches in twos between the cylinder.
For better regulating valve timing, corresponding each cylinder of described eccentric wheel has two, respectively the intake and exhaust stroke is regulated.
For realizing good sealing, the described stifled oily part that is arranged on the eccentric shaft two ends is pressed in the two ends of main oil gallery by interference fit.
Beneficial effect of the present invention: owing to adopt above-mentioned lift range variable car engine eccentric drive shaft, main oil gallery is arranged on first axle journal, and be connected with main oil gallery by one group of radial hole, increased the flow of lubricant flux of eccentric shaft main oil gallery, for each bearing of eccentric shaft and each eccentric wheel provide sufficient lubricating oil, satisfy lubricating requirement; In eccentric shaft end and axle journal is set between the cylinder in twos, better fixed eccentric shaft prolongs working life of eccentric shaft; The stifled oily part at main oil gallery two ends is by the sealing of interference fit realization to main oil gallery, and is simple in structure, good manufacturability.
Below with reference to drawings and Examples, the present invention is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is a lift range variable car engine eccentric drive shaft oil channel structures schematic representation.
Fig. 2 is a camshaft clutch shaft bearing stand structure schematic representation.
Embodiment
As Fig. 1, shown in Figure 2, a kind of lift range variable car engine eccentric drive shaft, comprise eccentric shaft 1, extend and run through the main oil gallery of whole eccentric shaft, be provided with stifled oily part 3 at main oil gallery 2 two ends along the central axial direction of eccentric shaft, 2 of stifled oily part 3 and main oil gallerys are realized sealing by interference fit, prevented oil leakage, stifled oily part 3 is simple in structure, effective; Eccentric shaft first axle journal 4 is arranged on the end of eccentric shaft 1, and cooperate with clutch shaft bearing lid 25, described first axle journal 4 is provided with the first axle journal oil groove 7, the described first axle journal oil groove 7 is a circular ring, lubricant oil arrives 2 of the first axle journal oil groove, 7, the first axle journal oil grooves 7 and main oil gallerys from the cylinder cap working connection and communicates by one group of oilhole 8; Be to increase flow rate of lubricating oil, one group of oilhole 8 be 4 along the equally distributed radial hole of eccentric shaft circumference, guarantee to have in the main oil gallery 2 sufficient lubricating oil to supply with.Be better fixed eccentric shaft, the end that described eccentric shaft axle journal correspondence is arranged on eccentric shaft reaches in twos between the cylinder; First secondary oil duct 6 one ends of described one group of axle journal all communicate with eccentric shaft main oil gallery 2, and the other end communicates with eccentric shaft axle journal outer surface, and the eccentric shaft axle journal is lubricated; Corresponding each cylinder is provided with two eccentric wheels 5 on the eccentric shaft 1, respectively the intake and exhaust lift is controlled, an end that is provided with second secondary oil duct 9, the second secondary oil ducts 9 on each eccentric wheel 5 communicates with eccentric shaft main oil gallery 2, the other end communicates with eccentric wheel 5 outer surfaces, and eccentric wheel 5 is lubricated.Effectively guarantee the lubricated of each eccentric shaft 1 axle journal and eccentric wheel 5.
Claims (6)
1. lift range variable car engine eccentric drive shaft, it comprise eccentric shaft (1), along the central axial direction of eccentric shaft (1) extend and run through whole eccentric shaft (1) main oil gallery (2), be arranged on the stifled oily part (3) at main oil gallery (2) two ends and be arranged on eccentric shaft (1) and gone up one group of axle journal of fixed eccentric shaft (1) and one group of eccentric wheel (5) of adjusting valve lift amount; It is characterized in that: first axle journal (4) of described eccentric shaft (1) end is provided with the first axle journal oil groove (7), lubricant oil arrives the first axle journal oil groove (7) from the cylinder cap working connection, communicates by one group of oilhole (8) between the first axle journal oil groove (7) and main oil gallery (2); All have the first secondary oil duct (6) to communicate between main oil gallery (2) and each axle journal outer surface, main oil gallery (2) all has the second secondary oil duct (9) to communicate with each eccentric wheel outer surface.
2. lift range variable car engine eccentric drive shaft as claimed in claim 1, it is characterized in that: the described first axle journal oil groove (7) is a circular ring, and the one group of oilhole (8) that communicates between the first axle journal oil groove (7) and main oil gallery (2) is one group of vertical radial hole.
3. lift range variable car engine eccentric drive shaft as claimed in claim 1 or 2 is characterized in that: described one group of oilhole (8) be 4 along the equally distributed radial hole of eccentric shaft (1) circumference.
4. lift range variable car engine eccentric drive shaft as claimed in claim 1 is characterized in that: the end that described one group of axle journal correspondence is arranged on eccentric shaft (1) reaches in twos between the cylinder.
5. lift range variable car engine eccentric drive shaft as claimed in claim 1 is characterized in that: corresponding each cylinder of described one group of eccentric wheel (5) has two.
6. lift range variable car engine eccentric drive shaft as claimed in claim 1 is characterized in that: the described stifled oily part (3) that is arranged on eccentric shaft (1) two ends is pressed in the two ends of main oil gallery (2) by interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100776184A CN102140948A (en) | 2011-03-29 | 2011-03-29 | Eccentric shaft of variable valve lift automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100776184A CN102140948A (en) | 2011-03-29 | 2011-03-29 | Eccentric shaft of variable valve lift automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102140948A true CN102140948A (en) | 2011-08-03 |
Family
ID=44408709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100776184A Pending CN102140948A (en) | 2011-03-29 | 2011-03-29 | Eccentric shaft of variable valve lift automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102140948A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351133A (en) * | 2015-12-11 | 2016-02-24 | 中国北方发动机研究所(天津) | Engine oil lubrication type high-pressure variable pump camshaft |
| CN106194304A (en) * | 2016-09-12 | 2016-12-07 | 奇瑞汽车股份有限公司 | A kind of coupling is put the camshaft of OCV |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651704A (en) * | 1985-01-30 | 1987-03-24 | Honda Giken Kogyo Kabushiki Kaisha | Breather arrangement for cam case of internal combustion engine |
| US4876916A (en) * | 1986-12-18 | 1989-10-31 | Von Roll, Ag | Cast shafts, particularly camshafts |
| JPH04232320A (en) * | 1990-12-28 | 1992-08-20 | Suzuki Motor Corp | Cam face lubrication oil flow passage of dohc engine |
| US5186129A (en) * | 1992-03-30 | 1993-02-16 | Ford Motor Company | Intermittent oiling system for an internal combustion engine camshaft and valve train |
| CN2567349Y (en) * | 2002-09-06 | 2003-08-20 | 重庆宗申技术开发研究有限公司 | Internet oil-pipe lubricating device of camshaft of motorcycle |
| EP1403497A1 (en) * | 2002-09-30 | 2004-03-31 | Honda Giken Kogyo Kabushiki Kaisha | Camshaft bearing structure for over-head camshaft type internal combustion engine |
| JP2006274894A (en) * | 2005-03-29 | 2006-10-12 | Suzuki Motor Corp | Lubrication structure for valve gear |
| WO2007116294A2 (en) * | 2006-04-07 | 2007-10-18 | Toyota Jidosha Kabushiki Kaisha | Coupling lubrication structure |
| DE102006038680A1 (en) * | 2006-08-17 | 2008-02-21 | Bayerische Motoren Werke Ag | Valve drive lubricating device for internal combustion engine i.e. multi-cylinder internal-combustion engine, has lubricant channel with ports, where channel and individual cam or group of cams are separately arranged to apply lubricant |
| CN101382080A (en) * | 2007-09-05 | 2009-03-11 | 马自达汽车株式会社 | Lubricating device |
| CN201502412U (en) * | 2009-09-04 | 2010-06-09 | 中国第一汽车集团公司 | Supporting shaft journal of camshaft in type of double sealed grooves |
| CN101922320A (en) * | 2010-09-29 | 2010-12-22 | 奇瑞汽车股份有限公司 | Automobile engine camshaft |
| CN201723261U (en) * | 2010-07-26 | 2011-01-26 | 上海通用汽车有限公司 | Exhaust cam shaft for engine |
-
2011
- 2011-03-29 CN CN2011100776184A patent/CN102140948A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651704A (en) * | 1985-01-30 | 1987-03-24 | Honda Giken Kogyo Kabushiki Kaisha | Breather arrangement for cam case of internal combustion engine |
| US4876916A (en) * | 1986-12-18 | 1989-10-31 | Von Roll, Ag | Cast shafts, particularly camshafts |
| JPH04232320A (en) * | 1990-12-28 | 1992-08-20 | Suzuki Motor Corp | Cam face lubrication oil flow passage of dohc engine |
| US5186129A (en) * | 1992-03-30 | 1993-02-16 | Ford Motor Company | Intermittent oiling system for an internal combustion engine camshaft and valve train |
| CN2567349Y (en) * | 2002-09-06 | 2003-08-20 | 重庆宗申技术开发研究有限公司 | Internet oil-pipe lubricating device of camshaft of motorcycle |
| EP1403497A1 (en) * | 2002-09-30 | 2004-03-31 | Honda Giken Kogyo Kabushiki Kaisha | Camshaft bearing structure for over-head camshaft type internal combustion engine |
| JP2006274894A (en) * | 2005-03-29 | 2006-10-12 | Suzuki Motor Corp | Lubrication structure for valve gear |
| WO2007116294A2 (en) * | 2006-04-07 | 2007-10-18 | Toyota Jidosha Kabushiki Kaisha | Coupling lubrication structure |
| DE102006038680A1 (en) * | 2006-08-17 | 2008-02-21 | Bayerische Motoren Werke Ag | Valve drive lubricating device for internal combustion engine i.e. multi-cylinder internal-combustion engine, has lubricant channel with ports, where channel and individual cam or group of cams are separately arranged to apply lubricant |
| CN101382080A (en) * | 2007-09-05 | 2009-03-11 | 马自达汽车株式会社 | Lubricating device |
| CN201502412U (en) * | 2009-09-04 | 2010-06-09 | 中国第一汽车集团公司 | Supporting shaft journal of camshaft in type of double sealed grooves |
| CN201723261U (en) * | 2010-07-26 | 2011-01-26 | 上海通用汽车有限公司 | Exhaust cam shaft for engine |
| CN101922320A (en) * | 2010-09-29 | 2010-12-22 | 奇瑞汽车股份有限公司 | Automobile engine camshaft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351133A (en) * | 2015-12-11 | 2016-02-24 | 中国北方发动机研究所(天津) | Engine oil lubrication type high-pressure variable pump camshaft |
| CN105351133B (en) * | 2015-12-11 | 2017-10-27 | 中国北方发动机研究所(天津) | A kind of oil lubricating formula high pressure variable pump camshaft |
| CN106194304A (en) * | 2016-09-12 | 2016-12-07 | 奇瑞汽车股份有限公司 | A kind of coupling is put the camshaft of OCV |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110803 |