CN102953779A - Lever regulation type lift variable system - Google Patents
Lever regulation type lift variable system Download PDFInfo
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- CN102953779A CN102953779A CN2012104100743A CN201210410074A CN102953779A CN 102953779 A CN102953779 A CN 102953779A CN 2012104100743 A CN2012104100743 A CN 2012104100743A CN 201210410074 A CN201210410074 A CN 201210410074A CN 102953779 A CN102953779 A CN 102953779A
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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 of mechanical designing technique, particularly a kind of lever regulate type lift variable system.
Background technique
Traditional petrolic valve lift is fixing immutable, and namely the cam profile of camshaft only has a kind ofly, and this has just caused 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 is that design of cam contour line is that the balance of motor under full operating mode selected, consequently motor both can not get best high speed efficient, also can not get best low speed torque, but obtained best balanced performance under the full operating mode.The employing of lift range variable makes motor can both be met the valve lift of demand in high velocity and low velocity zone, thereby improves high engine speeds power and low speed torque.
Find through the retrieval to the 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 preferably the high and low rotating speed operating mode of motor.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, a kind of lever regulate type lift variable system is provided, 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, the 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 is installed in the space that cylinder surrounds and with the internal face sealing of cylinder and contacts, the air outlet of intake duct, the suction port of air outlet flue all is connected with cylinder head, the lower end surface of intake valve, the lower end surface of exhaust valve is all in the 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, 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, 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 is installed in the cavity volume and with the internal face sealing of cavity volume and contacts, the upper wall surface of cavity volume has a square opening, the upper wall surface that the lower end of movement rod is passed behind the square opening on the cavity volume upper wall surface with moving body is consolidated, 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, moving body can be in cavity volume move left and right, movement rod can followed the moving body move left and right.At high-speed working condition, the engine exhaust overpressure is higher, and the cavity volume internal pressure in moving body left side is also higher, and moving body drive movement rod moves right and extension spring, and it is large that the lever length ratio of movement rod the right and left becomes, thereby the intake valve lift is become greatly.In the low speed operating mode, the engine exhaust overpressure is lower, and the cavity volume internal pressure in moving body left side is also lower, under the stretching action of spring, moving body drives movement rod and is moved to the left, and the lever length ratio of movement rod the right and left diminishes, thereby the 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 is simple in structure, can realize the continuous variable of valve lift, do not need again special control mechanism.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of A-A section among Fig. 1;
Wherein: 1, cylinder, 2, piston, 3, cylinder head, 4, intake duct, 5, air outlet flue, 6, intake valve, 7, exhaust valve, 8, the 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
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment take technical solution of the present invention as prerequisite.
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 is installed in the space that cylinder 1 surrounds and with the internal face sealing of cylinder 1 and contacts, the air outlet of intake duct 4, the suction port of air outlet flue 5 all is connected with cylinder head, the lower end surface of intake valve 6, the lower end surface of exhaust valve 7 is all in the 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, the cross section of cavity volume 17 is rectangular, moving body 18 is installed in the cavity volume 17 and with the internal face sealing of cavity volume 17 and contacts, the upper wall surface of cavity volume 17 has a square opening, the upper wall surface that the lower end of movement rod 19 is passed behind the square opening on cavity volume 17 upper wall surfaces with moving body 18 is consolidated, 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 be in cavity volume 17 interior move left and right, and movement rod 19 can followed moving body 18 move left and right.At high-speed working condition, engine exhaust pipe 13 internal pressures are higher, and cavity volume 17 internal pressures in moving body 18 left sides are also higher, and moving body 18 drive movement rods 19 move right and extension spring 20, it is large that the lever length ratio of movement rod 19 the right and lefts becomes, thereby make the intake valve lift become large.In the low speed operating mode, engine exhaust pipe 13 internal pressures are lower, and cavity volume 17 internal pressures in moving body 18 left sides are also lower, under the stretching action of spring 20, moving body 18 drives movement rod 19 and is moved to the left, and the lever length ratio of movement rod 19 the right and lefts diminishes, thereby the intake valve lift is diminished.
Claims (1)
1. lever regulate 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) is installed in the space that cylinder (1) surrounds and with the internal face sealing of cylinder (1) and contacts, the air outlet of intake duct (4), the suction port of air outlet flue (5) all is connected with cylinder head, the lower end surface of intake valve (6), the lower end surface of exhaust valve (7) is all in the 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) is installed in the cavity volume (17) and with the internal face sealing of cavity volume (17) and contacts, the upper wall surface of cavity volume (17) has a square opening, the upper wall surface that the lower end of movement rod (19) is passed behind the square opening on cavity volume (17) upper wall surface with moving body (18) is consolidated, 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 by the left wall of spring (20) with cavity volume (17).
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 |
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| CN102953779A true CN102953779A (en) | 2013-03-06 |
| CN102953779B CN102953779B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210410074.3A Expired - Fee Related CN102953779B (en) | 2012-10-24 | 2012-10-24 | Lever regulation type lift variable system |
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Cited By (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 (5)
| 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 |
| JPS6179812A (en) * | 1984-09-28 | 1986-04-23 | Hino Motors Ltd | Poppet mechanism for internal combustion engine |
| 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 |
-
2012
- 2012-10-24 CN CN201210410074.3A patent/CN102953779B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| JPS6179812A (en) * | 1984-09-28 | 1986-04-23 | Hino Motors Ltd | Poppet mechanism for internal combustion engine |
| 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 |
Cited By (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 |
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| CN102953779B (en) | 2015-01-21 |
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