CN102953782B - Combined rocker arm type fully variable valve lift mechanism for automobile - Google Patents
Combined rocker arm type fully variable valve lift mechanism for automobile Download PDFInfo
- Publication number
- CN102953782B CN102953782B CN201210416738.7A CN201210416738A CN102953782B CN 102953782 B CN102953782 B CN 102953782B CN 201210416738 A CN201210416738 A CN 201210416738A CN 102953782 B CN102953782 B CN 102953782B
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- rocking bar
- tappet
- engine
- guide rail
- hydraulic tappet
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Abstract
The invention provides a combined rocker arm type fully variable valve lift mechanism for an automobile, which is used for realizing the best match for engine air input and engine working condition. The mechanism comprises a combined rocker arm, a hydraulic tappet rod unit, a camshaft, a tappet and a valve; the combined rocker arm is in a four-connection-rod structure, the four articulated parts of the four-connection-rod structure are respectively assembled with the hydraulic tappet rod unit in a matching manner, the camshaft, the tappet and the valve; the hydraulic tappet rod unit is fixedly arranged on a fixing mechanism of an engine cylinder cover; and the camshaft, the tappet and the valve are arranged on the engine cylinder cover. By adopting the mechanism provided by the invention, the problem that the pumping damage of conventional engines of which air input is controlled by a throttle is solved, the air input requirement of the engine under different working conditions is met, the combustion efficiency of the engine is improved, and both the power performance and the economic performance of the engine are improved.
Description
Technical field
The present invention relates to the full variable air valve lift range mechanism of a kind of motor car engine, especially a kind of full variable air valve lift range mechanism combining rocking arm type, belongs to combustion engine technology field.
Background technique
Along with the progress of society and the development of modern industry, energy and environment problem becomes the focal issue that people attract attention, countries in the world Abgasgesetz also increasingly stringent, also more and more higher to the performance requirement of motor car engine.Conventional gasoline engin adopts the mode of throttle control air inflow, brings pumping loss problem thus, and especially when low engine speed small load condition, because pumping loss is large, combustion efficiency is low, have impact on the economic performance of motor.For solving the problem, lift range variable technology is one of most effective measures, and it, by the regulating and controlling air input of engine by air to valve opening angle, reaches the object that operating conditions different from motor mates.
Summary of the invention
The object of the invention is to for making air input of engine by air and engine operating condition match, providing a kind of and being controlled by Engine ECU, by hydraulic tappet unit and the full variable air valve lift range mechanism of motor car engine combination rocking arm type combining rocking arm cooperation realization.
Problem of the present invention realizes with following technical proposals:
The full variable air valve lift range mechanism of a kind of motor car engine combination rocking arm type, it comprises combination rocking arm, hydraulic tappet unit, camshaft, tappet and valve, described combination rocking arm is four-bar linkage structure, its four hinge point are equipped with hydraulic tappet unit, camshaft, tappet and valve respectively, described hydraulic tappet unit is fixed on the cylinder cap fixed mechanism of motor, and described camshaft, tappet and valve are installed in engine cylinder and cover.
The full variable air valve lift range mechanism of above-mentioned motor car engine combination rocking arm type, described combination rocking arm comprises rocker assembly, swift and doffer, described rocker assembly is made up of the first rocking bar, the second rocking bar, the 3rd rocking bar and the 4th rocking bar, described first rocker front end and the second rocker front end hinged, first rocking bar and the second rocking bar hinged seat are arranged on the upper end of tappet, described second rocking bar rear end and the 3rd rocker front end hinged, described 3rd rocking bar rear end and the 4th rocker front end hinged, described 4th rocking bar rear end and the first rocking bar rear end hinged.
The full variable air valve lift range mechanism of above-mentioned motor car engine combination rocking arm type, described swift is arranged on the hinged seat of the second rocking bar and the 3rd rocking bar, and the outer side wall of swift mates with camshaft.
The full variable air valve lift range mechanism of above-mentioned motor car engine combination rocking arm type, described doffer is arranged on the hinged seat of the 3rd rocking bar and the 4th rocking bar, the outer side wall of doffer and hydraulic tappet units match.
The full variable air valve lift range mechanism of above-mentioned motor car engine combination rocking arm type, described hydraulic tappet unit comprises hydraulic tappet, guide rail connecting base and guide rail, and described hydraulic tappet controls by Engine ECU, arranges guide rail connecting base in the front end of hydraulic tappet.
The full variable air valve lift range mechanism of above-mentioned motor car engine combination rocking arm type, described guide rail connecting base is sleeved on outside guide rail, is symmetrical arranged two rollers in guide rail connecting base front end, and described roller and guide rail are equipped with.
The full variable air valve lift range mechanism of above-mentioned motor car engine combination rocking arm type, described guide rail is arranged on the cylinder cap fixed mechanism of motor by positioning dowel, and it mates with the outer side wall of doffer.
Conventional engines distribution device rocking arm is designed to the combination rocking arm of four-bar linkage structure by the present invention, and swift is set on second rocking bar and the 3rd rocking bar hinged seat of combination rocking arm, coordinated with swift outer side wall by camshaft overhead cam molded line, drive combination rocking motion, make to be arranged on doffer on the 3rd rocking bar and the 4th rocking bar hinged seat along slide, drive the first rocking bar rear end hinged with the 4th rocking bar rear end to move up and down, thus realize the opening and closing of valve.The present invention realizes and the mating of engine operating condition, be provided with the hydraulic tappet unit controlled by Engine ECU, the motion of guide rail connecting base is driven by the front and back action of hydraulic tappet, being symmetrical arranged two rollers by guide rail connecting base front end drives the guide rail be arranged on the fixed mechanism of engine cylinder cover to rotate around positioning dowel, and the movement locus of doffer is changed.When motor is in low speed small load condition, shortened by Engine ECU hydraulic control tappet, guide rail rotates counterclockwise several angle, and the camber line causing doffer to be walked is longer, and valve lift reduces, and air input of engine by air reduces; When motor is in high speed high load working condition, extended by Engine ECU hydraulic control tappet, guide rail rotates clockwise several angle, and the camber line causing doffer to be walked is shorter, and valve lift increases, and air input of engine by air increases.In a word, the invention solves by the conventional engines pumping loss problem of throttle control air inflow, meet the air inflow requirement under Under Different Work Condition of Engine, improve engine combustion efficiency, improve power performance and the economic performance of motor.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the plan view of hydraulic tappet unit;
Fig. 3 is combination rocker structure schematic diagram;
Fig. 4 is hydraulic tappet valve maximum opening angle schematic diagram when being in a certain position;
Valve maximum opening angle schematic diagram when Fig. 5 is hydraulic tappet shortening;
Valve maximum opening angle schematic diagram when Fig. 6 is hydraulic tappet elongation.
In figure, each list of reference numerals is: 1, camshaft, 2, swift, 3, rocker assembly, 3-1, the first rocking bar, 3-2, the second rocking bar, 3-3, the 3rd rocking bar, 3-4, the 4th rocking bar, 4, tappet, 5, valve, 6, hydraulic tappet, 7, guide rail connecting base, 7-1, roller, 8, cylinder cap fixed mechanism, 9, guide rail, 10, positioning dowel, 11, doffer, 12, engine inlets.
Embodiment
Referring to Fig. 1, the present invention includes combination rocking arm, hydraulic tappet unit, camshaft 1, tappet 4 and valve 5, described combination rocking arm is four-bar linkage structure, its four hinge point are equipped with hydraulic tappet unit, camshaft 1, tappet 4 and valve 5 respectively, described hydraulic tappet unit is fixed on the cylinder cap fixed mechanism 8 of motor, and described camshaft 1, tappet 4 and valve 5 are installed in engine cylinder and cover.
Referring to Fig. 1, Fig. 2, Fig. 3, conventional engines distribution device rocking arm is designed to the combination rocking arm of four-bar linkage structure by the present invention, and swift 2 is set on second rocking bar and the 3rd rocking bar hinged seat of combination rocking arm rocker assembly 3, coordinated with swift 2 outer side wall by camshaft 1 overhead cam molded line, drive combination rocking motion, the doffer 11 be arranged on the 3rd rocking bar and the 4th rocking bar hinged seat is slided along guide rail 9, drive the first rocking bar 3-1 rear end hinged with the 4th rocking bar 3-4 rear end to move up and down, thus realize the opening and closing of valve 5.The present invention realizes and the mating of engine operating condition, be provided with the hydraulic tappet unit controlled by Engine ECU, guide rail connecting base 7 is driven to move by the front and back action of hydraulic tappet 6, be symmetrical arranged the guide rail 9 of two roller 7-1 drive installation on engine cylinder cover holding mechanism 8 by guide rail connecting base 7 front end to rotate around positioning dowel 10, the movement locus of doffer 11 is changed, realize the change of valve lift, thus change the air inflow of motor.
Referring to Fig. 5, when motor is in low speed small load condition, shortened by Engine ECU hydraulic control tappet 6, guide rail 9 rotates counterclockwise several angle, the camber line causing doffer 11 to be walked is longer, and valve lift reduces, and the air quantity being entered engine cylinder-body by engine inlets 12 reduces.
Referring to Fig. 6, when motor is in high speed high load working condition, extended by Engine ECU hydraulic control tappet 6, guide rail 9 rotates clockwise several angle, the camber line causing doffer 11 to be walked is shorter, and valve lift increases, and the air quantity being entered engine cylinder-body by engine inlets 12 increases.
Claims (3)
1. the full variable air valve lift range mechanism of motor car engine combination rocking arm type, comprise combination rocking arm, camshaft (1), tappet (4) and valve (5), described combination rocking arm is four-bar linkage structure, described camshaft (1), tappet (4) and valve (5) are installed in engine cylinder and cover, described combination rocking arm comprises rocker assembly (3), swift (2), described rocker assembly (3) is by the first rocking bar (3-1), second rocking bar (3-2), 3rd rocking bar (3-3) and the 4th rocking bar (3-4) composition, described swift (2) is arranged on the hinged seat of the second rocking bar and the 3rd rocking bar, the outer side wall of swift (2) mates with camshaft (1), it is characterized in that, it also comprises hydraulic tappet unit and doffer (11), the combination rocking arm of four-bar linkage structure, its four hinge point respectively with hydraulic tappet unit, camshaft (1), tappet (4) and valve (5) are equipped with, described hydraulic tappet unit is fixed on the cylinder cap fixed mechanism (8) of motor,
Described first rocking bar (3-1) front end and the second rocking bar (3-2) front end hinged, first rocking bar and the second rocking bar hinged seat are arranged on the upper end of tappet (4), described second rocking bar (3-2) rear end and the 3rd rocking bar (3-3) front end hinged, described 3rd rocking bar (3-3) rear end and the 4th rocking bar (3-4) front end hinged, described 4th rocking bar (3-4) rear end and the first rocking bar (3-1) rear end hinged;
Described doffer (11) is arranged on the hinged seat of the 3rd rocking bar and the 4th rocking bar, the outer side wall of doffer (11) and hydraulic tappet units match;
Described hydraulic tappet unit comprises hydraulic tappet (6), guide rail connecting base (7) and guide rail (9), and described hydraulic tappet (6) controls by Engine ECU, arranges guide rail connecting base (7) in the front end of hydraulic tappet (6).
2. the full variable air valve lift range mechanism of a kind of motor car engine combination rocking arm type according to claim 1, it is characterized in that, described guide rail connecting base (7) is sleeved on guide rail (9) outside, be symmetrical arranged two rollers (7-1) in guide rail connecting base (7) front end, described roller (7-1) is equipped with guide rail (9).
3. the full variable air valve lift range mechanism of a kind of motor car engine combination rocking arm type according to claim 2, it is characterized in that, described guide rail (9) is arranged on the cylinder cap fixed mechanism (8) of motor by positioning dowel (10), and it mates with the outer side wall of doffer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210416738.7A CN102953782B (en) | 2012-10-28 | 2012-10-28 | Combined rocker arm type fully variable valve lift mechanism for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210416738.7A CN102953782B (en) | 2012-10-28 | 2012-10-28 | Combined rocker arm type fully variable valve lift mechanism for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953782A CN102953782A (en) | 2013-03-06 |
| CN102953782B true CN102953782B (en) | 2015-07-01 |
Family
ID=47763096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210416738.7A Expired - Fee Related CN102953782B (en) | 2012-10-28 | 2012-10-28 | Combined rocker arm type fully variable valve lift mechanism for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102953782B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321708B (en) * | 2013-06-06 | 2016-06-15 | 浙江吉利汽车研究院有限公司杭州分公司 | Stepless variable valve lift mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637236A (en) * | 2003-12-26 | 2005-07-13 | 本田技研工业株式会社 | Transfer bar mechanism for internal combustion engine valve system |
| CN1764770A (en) * | 2003-03-24 | 2006-04-26 | 泰森克鲁普汽车股份公司 | Device for the variable actuation of the gas exchange valves of internal combustion engines. |
| CN1824925A (en) * | 2005-02-23 | 2006-08-30 | 本田技研工业株式会社 | Control apparatus |
| CN201554511U (en) * | 2009-10-23 | 2010-08-18 | 上海汽车集团股份有限公司 | Mechanical continuous variable valve lift driving device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4539430B2 (en) * | 2005-05-11 | 2010-09-08 | トヨタ自動車株式会社 | Variable valve gear |
| US8640660B2 (en) * | 2011-03-10 | 2014-02-04 | Jesper Frickmann | Continuously variable valve actuation apparatus for an internal combustion engine |
-
2012
- 2012-10-28 CN CN201210416738.7A patent/CN102953782B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1764770A (en) * | 2003-03-24 | 2006-04-26 | 泰森克鲁普汽车股份公司 | Device for the variable actuation of the gas exchange valves of internal combustion engines. |
| CN1637236A (en) * | 2003-12-26 | 2005-07-13 | 本田技研工业株式会社 | Transfer bar mechanism for internal combustion engine valve system |
| CN1824925A (en) * | 2005-02-23 | 2006-08-30 | 本田技研工业株式会社 | Control apparatus |
| EP1696287A1 (en) * | 2005-02-23 | 2006-08-30 | HONDA MOTOR CO., Ltd. | Control apparatus |
| CN201554511U (en) * | 2009-10-23 | 2010-08-18 | 上海汽车集团股份有限公司 | Mechanical continuous variable valve lift driving device |
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| Publication number | Publication date |
|---|---|
| CN102953782A (en) | 2013-03-06 |
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Granted publication date: 20150701 Termination date: 20211028 |