CN102953779B - Lever regulation type lift variable system - Google Patents
Lever regulation type lift variable system Download PDFInfo
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- CN102953779B CN102953779B CN201210410074.3A CN201210410074A CN102953779B CN 102953779 B CN102953779 B CN 102953779B CN 201210410074 A CN201210410074 A CN 201210410074A CN 102953779 B CN102953779 B CN 102953779B
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Abstract
The invention relates to a lever regulation type lift variable system in the technical field of machine design. The lever regulation type lift variable system comprises an inlet valve, an exhaust valve, a gas compressor, a turbine, a lever, a lifter, a volume cavity, a moving body, a connecting pipe and a spring, wherein the moving body is mounted in the volume cavity and in hermetical contact with the inner wall surface of the volume cavity, a square hole is formed in the upper wall surface of the volume cavity, the lower end of a moving rod penetrates through the square hole in the upper wall surface of the volume cavity and then is fixedly connected with the upper wall surface of the moving body, and the upper end of the moving rod is in contact with the lever. When the pressure in an inlet pipe of an engine is high, the moving body can drive the moving rod to move right and then the lift of the inlet valve is increased; and when the pressure in the inlet pipe is low, the moving body can drive the moving rod to move left, and the lift of the inlet valve is decreased. The lever regulation type lift variable system disclosed by the invention has the advantages of reasonable design and simple structure and is suitable for valve lift variable systems of the engines.
Description
Technical field
What the present invention relates to is a kind of engine intake valve lift regulating system, particularly a kind of lever regulation type lift variable system of mechanical designing technique.
Background technique
Traditional petrolic valve lift is fixing immutable, and namely the cam profile of camshaft only has one, and this just causes this lift can not make motor all obtain good response in high velocity and low velocity zone.The valve lift of conventional gasoline machine motor and design of cam contour line select the balance of motor under full working scope, consequently motor both can not get best high speed efficiency, also can not get best low speed torque, but best balanced performance under obtaining full working scope.The employing of lift range variable, makes motor can be met the valve lift of demand in high velocity and low velocity zone, thus improves high engine speeds power and low speed torque.
Through finding the retrieval of prior art document, China Patent No. application number 200910190522.1, patent name: a kind of hydraulic valve mechanism of lift range variable, this patented technology provides a kind of device of variable valve lift, can take into account the high and low rotating speed operating mode of motor preferably.But its design needs special control structure, whole system complex structure.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of lever regulation type lift variable system, valve lift can realize continuous variable, and does not need special control mechanism.
The present invention is achieved through the following technical solutions, the present invention includes: cylinder, piston, cylinder head, intake duct, air outlet flue, intake valve, exhaust valve, compressor air inlet machine pipe, gas compressor, engine air inlet tube, turbine exhaust pipe, turbine, engine exhaust pipe, lever, tappet, connecting tube, cavity volume, moving body, movement rod and spring, piston to be arranged in space that cylinder surrounds and to seal with the internal face of cylinder and contacts, the air outlet of intake duct, the suction port of air outlet flue is all connected with cylinder head, the lower end surface of intake valve, the lower end surface of exhaust valve all in firing chamber, the air inlet/outlet of gas compressor respectively with the air outlet of compressor air inlet machine pipe, the suction port of engine air inlet tube is connected, and the air outlet of engine air inlet tube is connected with the suction port of intake duct, the air inlet/outlet of turbine respectively with the air outlet of engine exhaust pipe, the suction port of turbine exhaust pipe is connected, and the suction port of engine exhaust pipe is connected with the air outlet of air outlet flue, the two ends of lever respectively with the upper end of intake valve, the upper end of tappet is connected, the cross section of cavity volume is rectangular, moving body to be arranged in cavity volume and to seal with the internal face of cavity volume and contacts, the upper wall surface of cavity volume has a square opening, the lower end of movement rod is consolidated with the upper wall surface of moving body through after the square opening on cavity volume upper wall surface, the upper end of movement rod contacts with lever, the two ends of connecting tube respectively with the lower wall surface of cavity volume, engine exhaust pipe is connected, and the left wall of moving body is connected with the left wall of cavity volume by spring.
In the present invention, moving body and movement rod are consolidated, and moving body can move left and right in cavity volume, and movement rod can followed by moving body and move left and right.At high-speed working condition, engine exhaust overpressure is higher, and the cavity volume internal pressure on the left of moving body is also higher, and moving body drives movement rod to move right and extension spring, and the lever length ratio of movement rod the right and left becomes large, thus makes intake valve lift become large.At speed operation, engine exhaust overpressure is lower, and the cavity volume internal pressure on the left of moving body is also lower, under the stretching action of spring, moving body drives movement rod to be moved to the left, and the lever length ratio of movement rod the right and left diminishes, thus intake valve lift is diminished.
Compared with prior art, the present invention has following beneficial effect and is: the present invention is reasonable in design, and structure is simple, can realize the continuous variable of valve lift, not need special control mechanism again.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of A-A section in Fig. 1;
Wherein: 1, cylinder, 2, piston, 3, cylinder head, 4, intake duct, 5, air outlet flue, 6, intake valve, 7, exhaust valve, 8, compressor air inlet machine pipe, 9, gas compressor, 10, engine air inlet tube, 11, turbine exhaust pipe, 12, turbine, 13, engine exhaust pipe, 14, lever, 15, tappet, 16, connecting tube, 17, cavity volume, 18, moving body, 19, movement rod, 20, spring.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
As depicted in figs. 1 and 2, the present invention includes: cylinder 1, piston 2, cylinder head 3, intake duct 4, air outlet flue 5, intake valve 6, exhaust valve 7, compressor air inlet machine pipe 8, gas compressor 9, engine air inlet tube 10, turbine exhaust pipe 11, turbine 12, engine exhaust pipe 13, lever 14, tappet 15, connecting tube 16, cavity volume 17, moving body 18, movement rod 19 and spring 20, piston 2 to be arranged in space that cylinder 1 surrounds and to seal with the internal face of cylinder 1 and contacts, the air outlet of intake duct 4, the suction port of air outlet flue 5 is all connected with cylinder head, the lower end surface of intake valve 6, the lower end surface of exhaust valve 7 all in firing chamber, the air inlet/outlet of gas compressor 9 respectively with the air outlet of compressor air inlet machine pipe 8, the suction port of engine air inlet tube 10 is connected, and the air outlet of engine air inlet tube 10 is connected with the suction port of intake duct 4, the air inlet/outlet of turbine 12 respectively with the air outlet of engine exhaust pipe 13, the suction port of turbine exhaust pipe 11 is connected, and the suction port of engine exhaust pipe 13 is connected with the air outlet of air outlet flue 5, the two ends of lever 14 respectively with the upper end of intake valve 6, the upper end of tappet 15 is connected, the cross section of cavity volume 17 is rectangular, moving body 18 to be arranged in cavity volume 17 and to seal with the internal face of cavity volume 17 and contacts, the upper wall surface of cavity volume 17 has a square opening, the lower end of movement rod 19 is consolidated with the upper wall surface of moving body 18 through after the square opening on cavity volume 17 upper wall surface, the upper end of movement rod 19 contacts with lever 14, the two ends of connecting tube 16 respectively with the lower wall surface of cavity volume 17, engine exhaust pipe 13 is connected, and the left wall of moving body 18 is connected with the left wall of cavity volume 17 by spring 20.
In the present invention, moving body 18 and movement rod 19 are consolidated, and moving body 18 can move left and right in cavity volume 17, and movement rod 19 can followed by moving body 18 and move left and right.At high-speed working condition, engine exhaust pipe 13 internal pressure is higher, and cavity volume 17 internal pressure on the left of moving body 18 is also higher, and moving body 18 drives movement rod 19 to move right and extension spring 20, the lever length ratio of movement rod 19 the right and left becomes large, thus makes intake valve lift become large.At speed operation, engine exhaust pipe 13 internal pressure is lower, and cavity volume 17 internal pressure on the left of moving body 18 is also lower, under the stretching action of spring 20, moving body 18 drives movement rod 19 to be moved to the left, and the lever length ratio of movement rod 19 the right and left diminishes, thus intake valve lift is diminished.
Claims (1)
1. a lever regulation type lift variable system, comprise cylinder (1), piston (2), cylinder head (3), intake duct (4), air outlet flue (5), intake valve (6), exhaust valve (7), compressor air inlet machine pipe (8), gas compressor (9), engine air inlet tube (10), turbine exhaust pipe (11), turbine (12), engine exhaust pipe (13), lever (14) and tappet (15), piston (2) to be arranged in space that cylinder (1) surrounds and to seal with the internal face of cylinder (1) and contacts, the air outlet of intake duct (4), the suction port of air outlet flue (5) is all connected with cylinder head, the lower end surface of intake valve (6), the lower end surface of exhaust valve (7) is all in firing chamber, the air inlet/outlet of gas compressor (9) respectively with the air outlet of compressor air inlet machine pipe (8), the suction port of engine air inlet tube (10) is connected, the air outlet of engine air inlet tube (10) is connected with the suction port of intake duct (4), the air inlet/outlet of turbine (12) respectively with the air outlet of engine exhaust pipe (13), the suction port of turbine exhaust pipe (11) is connected, the suction port of engine exhaust pipe (13) is connected with the air outlet of air outlet flue (5), the two ends of lever (14) respectively with the upper end of intake valve (6), the upper end of tappet (15) is connected, characterized by further comprising connecting tube (16), cavity volume (17), moving body (18), movement rod (19) and spring (20), the cross section of cavity volume (17) is rectangular, moving body (18) to be arranged in cavity volume (17) and to seal with the internal face of cavity volume (17) and contacts, the upper wall surface of cavity volume (17) has a square opening, the lower end of movement rod (19) is consolidated with the upper wall surface of moving body (18) through after the square opening on cavity volume (17) upper wall surface, the upper end of movement rod (19) contacts with lever (14), the two ends of connecting tube (16) respectively with the lower wall surface of cavity volume (17), engine exhaust pipe (13) is connected, the left wall of moving body (18) is connected by the left wall of spring (20) with cavity volume (17), the lift of intake valve (6) can realize continuous variable by spring (20), and does not need special control mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410074.3A CN102953779B (en) | 2012-10-24 | 2012-10-24 | Lever regulation type lift variable system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410074.3A CN102953779B (en) | 2012-10-24 | 2012-10-24 | Lever regulation type lift variable system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953779A CN102953779A (en) | 2013-03-06 |
| CN102953779B true CN102953779B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210410074.3A Expired - Fee Related CN102953779B (en) | 2012-10-24 | 2012-10-24 | Lever regulation type lift variable system |
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| CN (1) | CN102953779B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233792A (en) * | 2013-04-07 | 2013-08-07 | 上海交通大学 | Sliding-type valve lift adjusting device |
| CN104929722A (en) * | 2015-05-25 | 2015-09-23 | 李学营 | Mechanical valve stroke regulating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462353A (en) * | 1982-04-15 | 1984-07-31 | Aisin Seiki Kabushiki Kaisha | Variable cylinder device for internal combustion engines |
| US4721007A (en) * | 1983-11-30 | 1988-01-26 | Entzminger William | Variable ratio lever arm mechanism |
| CN101413445A (en) * | 2007-10-19 | 2009-04-22 | 日产自动车株式会社 | Intake air flow rate detection device and method for internal combustion engine |
| CN102588076A (en) * | 2012-03-27 | 2012-07-18 | 上海交通大学 | Volume cavity regulating intake device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6179812A (en) * | 1984-09-28 | 1986-04-23 | Hino Motors Ltd | Poppet mechanism for internal combustion engine |
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2012
- 2012-10-24 CN CN201210410074.3A patent/CN102953779B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462353A (en) * | 1982-04-15 | 1984-07-31 | Aisin Seiki Kabushiki Kaisha | Variable cylinder device for internal combustion engines |
| US4721007A (en) * | 1983-11-30 | 1988-01-26 | Entzminger William | Variable ratio lever arm mechanism |
| CN101413445A (en) * | 2007-10-19 | 2009-04-22 | 日产自动车株式会社 | Intake air flow rate detection device and method for internal combustion engine |
| CN102588076A (en) * | 2012-03-27 | 2012-07-18 | 上海交通大学 | Volume cavity regulating intake device |
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| CN102953779A (en) | 2013-03-06 |
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Granted publication date: 20150121 Termination date: 20171024 |