CN102966405B - Stretching valve lift variable device - Google Patents
Stretching valve lift variable device Download PDFInfo
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- CN102966405B CN102966405B CN201210462156.2A CN201210462156A CN102966405B CN 102966405 B CN102966405 B CN 102966405B CN 201210462156 A CN201210462156 A CN 201210462156A CN 102966405 B CN102966405 B CN 102966405B
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- moving body
- cavity volume
- exhaust pipe
- air outlet
- air inlet
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Abstract
The invention discloses a stretching valve lift variable device in the technical field of machine design. The stretching valve lift variable device comprises an intake valve, an exhaust valve, a compressor, a turbine, a lever, a tappet rod, a cam, a cam shaft, a volume cavity, a moving body, a connecting pipe and a spring, wherein the moving body is mounted in the volume cavity and is in sealing contact with the inner wall surface of the volume cavity; a mounting hole is formed in the left wall surface of the volume cavity; one end of a moving rod passes through the mounting hole in the left wall surface of the volume cavity to be fixedly connected with the left wall surface of the moving body; and the other end of the moving rod is connected with the cam shaft. When the pressure in an engine exhaust pipe is relatively large, the moving body drives the moving rod to move leftward, and the lift of the intake valve is increased; and when the pressure in the engine exhaust pipe is relatively small, the moving body drives the moving rod to move rightward, and the lift of the intake valve is reduced. The stretching valve lift variable device is reasonable in design, simple in structure, and applicable to engine valve lift variable systems.
Description
Technical field
What the present invention relates to is a kind of engine intake valve lift regulating system, particularly a kind of drawing variable valve lift device 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 drawing variable valve lift device, 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, cam, camshaft, connecting tube, movement rod, moving body, cavity volume 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, lever respectively with the upper end of intake valve, tappet, cam is connected, camshaft passes cam and is fixed together with cam, 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 left wall of cavity volume has a mounting hole, one end of movement rod is consolidated with the left wall of moving body through after the mounting hole on the left wall of cavity volume, and the other end of movement rod is connected with camshaft, the two ends of connecting tube respectively with the right wall of cavity volume, engine exhaust pipe is connected, and the right wall of moving body is connected with the right 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; Camshaft not only can rotate in movement rod, but also movement rod can be followed to move left and right together.At high-speed working condition, engine exhaust overpressure is higher, and the cavity volume internal pressure on the right side of moving body is also higher, and moving body drives movement rod to be moved to the left and extension spring, and camshaft is also moved to the left together, thus makes intake valve lift become large.At speed operation, engine exhaust overpressure is lower, and the cavity volume internal pressure on the right side of moving body is also lower, and under the stretching action of spring, moving body drives movement rod to move right, and camshaft also moves right together, 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;
Fig. 3 is the structural representation of B-B 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, cam, 17, camshaft, 18, connecting tube, 19, movement rod, 20, moving body, 21, cavity volume, 22, 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, cam 16, camshaft 17, connecting tube 18, movement rod 19, moving body 20, cavity volume 21 and spring 22, 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, lever 14 respectively with the upper end of intake valve 6, tappet 15, cam 16 is connected, camshaft 17 passes cam 16 and is fixed together with cam 16, the cross section of cavity volume 21 is rectangular, moving body 20 to be arranged in cavity volume 21 and to seal with the internal face of cavity volume 21 and contacts, the left wall of cavity volume 21 has a mounting hole, one end of movement rod 19 is consolidated with the left wall of moving body 20 through after the mounting hole on the left wall of cavity volume 21, the other end of movement rod 19 is connected with camshaft 17, the two ends of connecting tube 18 respectively with the right wall of cavity volume 21, engine exhaust pipe 13 is connected, and the right wall of moving body 20 is connected with the right wall of cavity volume 21 by spring 22.
In the present invention, moving body 20 and movement rod 19 are consolidated, and moving body 20 can move left and right in cavity volume 21; Camshaft 17 not only can rotate in movement rod 19, but also movement rod 19 can be followed to move left and right together.At high-speed working condition, engine exhaust pipe 13 internal pressure is higher, and cavity volume 21 internal pressure on the right side of moving body 20 is also higher, and moving body 20 drives movement rod 19 to be moved to the left and extension spring 22, and camshaft 17 is also moved to the left together, thus makes intake valve lift become large.At speed operation, engine exhaust pipe 13 internal pressure is lower, and cavity volume 21 internal pressure on the right side of moving body 20 is also lower, under the stretching action of spring 22, moving body 20 drives movement rod 19 to move right, and camshaft 17 also moves right together, thus intake valve lift is diminished.
Claims (1)
1. a drawing variable valve lift device, comprises 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), cam (16) and camshaft (17), 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), lever (14) respectively with the upper end of intake valve (6), tappet (15), cam (16) is connected, and camshaft (17) is through cam (16) and be fixed together with cam (16), characterized by further comprising connecting tube (18), movement rod (19), moving body (20), cavity volume (21) and spring (22), the cross section of cavity volume (21) is rectangular, moving body (20) to be arranged in cavity volume (21) and to seal with the internal face of cavity volume (21) and contacts, the left wall of cavity volume (21) has a mounting hole, one end of movement rod (19) is consolidated with the left wall of moving body (20) through after the mounting hole on cavity volume (21) left wall, the other end of movement rod (19) is connected with camshaft (17), the two ends of connecting tube (18) respectively with the right wall of cavity volume (21), engine exhaust pipe (13) is connected, and the right wall of moving body (20) is connected by the right wall of spring (22) with cavity volume (21), at high-speed working condition, engine exhaust pipe (13) internal pressure is higher, cavity volume (21) internal pressure on moving body (20) right side is also higher, moving body (20) drives movement rod (19) to be moved to the left and extension spring (22), camshaft (17) is also moved to the left together, thus makes intake valve lift become large, at speed operation, engine exhaust pipe (13) internal pressure is lower, cavity volume (21) internal pressure on moving body (20) right side is also lower, under the stretching action of spring (22), moving body (20) drives movement rod (19) to move right, camshaft (17) also moves right together, thus intake valve lift is diminished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462156.2A CN102966405B (en) | 2012-11-15 | 2012-11-15 | Stretching valve lift variable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210462156.2A CN102966405B (en) | 2012-11-15 | 2012-11-15 | Stretching valve lift variable device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102966405A CN102966405A (en) | 2013-03-13 |
| CN102966405B true CN102966405B (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210462156.2A Expired - Fee Related CN102966405B (en) | 2012-11-15 | 2012-11-15 | Stretching valve lift variable device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102966405B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107634A (en) * | 2020-01-13 | 2021-07-13 | 上海汽车集团股份有限公司 | Engine with adjustable valve lift and valve lift adjusting method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4823516A (en) * | 1988-05-06 | 1989-04-25 | Cincinnati Milacron Inc. | Cutting tool wheel having a removable abrasive belt |
| CN101225759A (en) * | 2008-01-25 | 2008-07-23 | 许小法 | Variable spiracula lifting device |
| CN101429882A (en) * | 2008-12-12 | 2009-05-13 | 奇瑞汽车股份有限公司 | Continuous variable air valve lift apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6062615A (en) * | 1983-09-16 | 1985-04-10 | Nippon Soken Inc | Variable valve mechanism |
| KR20030046952A (en) * | 2001-12-07 | 2003-06-18 | 현대자동차주식회사 | Valve mechanism of engine |
| JP2005171922A (en) * | 2003-12-12 | 2005-06-30 | Nippon Piston Ring Co Ltd | Variable valve mechanism |
-
2012
- 2012-11-15 CN CN201210462156.2A patent/CN102966405B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4823516A (en) * | 1988-05-06 | 1989-04-25 | Cincinnati Milacron Inc. | Cutting tool wheel having a removable abrasive belt |
| CN101225759A (en) * | 2008-01-25 | 2008-07-23 | 许小法 | Variable spiracula lifting device |
| CN101429882A (en) * | 2008-12-12 | 2009-05-13 | 奇瑞汽车股份有限公司 | Continuous variable air valve lift apparatus |
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| CN102966405A (en) | 2013-03-13 |
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Granted publication date: 20150311 Termination date: 20191115 |