CN102953777A - Inlet pressure control type camshaft device - Google Patents
Inlet pressure control type camshaft device Download PDFInfo
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- CN102953777A CN102953777A CN2012104091369A CN201210409136A CN102953777A CN 102953777 A CN102953777 A CN 102953777A CN 2012104091369 A CN2012104091369 A CN 2012104091369A CN 201210409136 A CN201210409136 A CN 201210409136A CN 102953777 A CN102953777 A CN 102953777A
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Abstract
The invention relates to an inlet pressure control type camshaft device in the technical field of machine design. The inlet pressure control type camshaft device comprises an inlet valve, an exhaust valve, a gas compressor, a turbine, a lever, a lifter, a cam, a camshaft, 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 mounting hole is formed in the left wall surface of the volume cavity, one end of a moving rod penetrates through the mounting hole in the left wall surface of the volume cavity and then is fixedly connected with the left wall surface of the moving body, and the other end of the moving rod is connected with the camshaft. When the pressure in an inlet pipe of an engine is high, the moving body can drive the moving rod to move left and then the lift of the inlet valve is increased; and when the pressure in the inlet pipe of the engine is low, the moving body can drive the moving rod to move right, and the lift of the inlet valve is decreased. The inlet pressure control type camshaft device 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 suction pressure control formula camshaft device.
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 suction pressure control formula camshaft device 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, cam, camshaft, connecting tube, movement rod, moving body, cavity volume 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, 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 is installed in the cavity volume and with the internal face sealing of cavity volume and contacts, the left wall of cavity volume has a mounting hole, the left wall that one end of movement rod passes behind the mounting hole on the left wall of cavity volume with moving body is consolidated, 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 air inlet tube 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; Camshaft not only can rotate in movement rod, but also can follow together move left and right of movement rod.At high-speed working condition, the engine charge overpressure is higher, and the cavity volume internal pressure on moving body right side is also higher, and moving body drives movement rod and is moved to the left also Compress Spring, and camshaft also is moved to the left together, thereby makes the intake valve lift become large.In the low speed operating mode, the engine charge overpressure is lower, and the cavity volume internal pressure on moving body right side is also lower, and under the elastic reaction of spring, moving body drives movement rod and moves right, and camshaft also moves right together, 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;
Fig. 3 is the structural representation of B-B 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, cam, 17, camshaft, 18, connecting tube, 19, movement rod, 20, moving body, 21, cavity volume, 22, spring.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, the 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, cam 16, camshaft 17, connecting tube 18, movement rod 19, moving body 20, cavity volume 21 and spring 22, 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, 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 is installed in the cavity volume 21 and with the internal face sealing of cavity volume 21 and contacts, the left wall of cavity volume 21 has a mounting hole, the left wall that one end of movement rod 19 passes behind the mounting hole on the cavity volume 21 left walls with moving body 20 is consolidated, 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 air inlet tube 10 is connected, and the left wall of moving body 20 is connected with the left 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 be in cavity volume 21 interior move left and right; Camshaft 17 not only can be in movement rod 19 interior rotations, but also can follow together move left and right of movement rod 19.At high-speed working condition, engine air inlet tube 10 internal pressures are higher, and cavity volume 21 internal pressures on moving body 20 right sides are also higher, and moving body 20 drives movement rod 19 and is moved to the left also Compress Spring 22, and camshaft 17 also is moved to the left together, thereby make the intake valve lift become large.In the low speed operating mode, engine air inlet tube 10 internal pressures are lower, and cavity volume 21 internal pressures on moving body 20 right sides are also lower, under the elastic reaction of spring 22, moving body 20 drives movement rod 19 and moves right, and camshaft 17 also moves right together, thereby the intake valve lift is diminished.
Claims (1)
1. a suction pressure is controlled the formula camshaft device, 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), tappet (15), cam (16) and camshaft (17), 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), 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), 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) is installed in the cavity volume (21) and with the internal face sealing of cavity volume (21) and contacts, the left wall of cavity volume (21) has a mounting hole, the left wall that one end of movement rod (19) passes behind the mounting hole on the left wall of cavity volume (21) with moving body (20) is consolidated, 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 air inlet tube (10) is connected, and the left wall of moving body (20) is connected by the left wall of spring (22) with cavity volume (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409136.9A CN102953777B (en) | 2012-10-24 | 2012-10-24 | Inlet pressure control type camshaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409136.9A CN102953777B (en) | 2012-10-24 | 2012-10-24 | Inlet pressure control type camshaft device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953777A true CN102953777A (en) | 2013-03-06 |
| CN102953777B CN102953777B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210409136.9A Expired - Fee Related CN102953777B (en) | 2012-10-24 | 2012-10-24 | Inlet pressure control type camshaft device |
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| CN (1) | CN102953777B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847440A (en) * | 2015-05-24 | 2015-08-19 | 赵梓涵 | Pipeline communicated type multicomponent linkage system |
| CN104912614A (en) * | 2015-05-10 | 2015-09-16 | 吴丹阳 | Bolt type rotary ascending device |
| CN108051139A (en) * | 2017-11-08 | 2018-05-18 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of leverage for realizing division function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10211395A1 (en) * | 2002-03-15 | 2003-10-09 | Ina Schaeffler Kg | Operating system for a switched valve drive, in an IC motor, has a permanent electro adhesion magnet to hold the operating bolt in a disengaged position when not energized and a spring to advance the bolt into the cam spiral groove |
| KR100867842B1 (en) * | 2006-10-10 | 2008-11-10 | 현대자동차주식회사 | Various valve lift follower for vehicle |
| WO2009011145A1 (en) * | 2007-07-16 | 2009-01-22 | Joho Corporation | System for varying total valve opening angle by variable lift |
| CN101842559A (en) * | 2007-11-02 | 2010-09-22 | 戴姆勒股份公司 | Valve train device |
| CN101994537A (en) * | 2009-08-13 | 2011-03-30 | 现代自动车株式会社 | Continuously variable valve lift device of engine |
-
2012
- 2012-10-24 CN CN201210409136.9A patent/CN102953777B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10211395A1 (en) * | 2002-03-15 | 2003-10-09 | Ina Schaeffler Kg | Operating system for a switched valve drive, in an IC motor, has a permanent electro adhesion magnet to hold the operating bolt in a disengaged position when not energized and a spring to advance the bolt into the cam spiral groove |
| KR100867842B1 (en) * | 2006-10-10 | 2008-11-10 | 현대자동차주식회사 | Various valve lift follower for vehicle |
| WO2009011145A1 (en) * | 2007-07-16 | 2009-01-22 | Joho Corporation | System for varying total valve opening angle by variable lift |
| CN101842559A (en) * | 2007-11-02 | 2010-09-22 | 戴姆勒股份公司 | Valve train device |
| CN101994537A (en) * | 2009-08-13 | 2011-03-30 | 现代自动车株式会社 | Continuously variable valve lift device of engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912614A (en) * | 2015-05-10 | 2015-09-16 | 吴丹阳 | Bolt type rotary ascending device |
| CN104847440A (en) * | 2015-05-24 | 2015-08-19 | 赵梓涵 | Pipeline communicated type multicomponent linkage system |
| CN108051139A (en) * | 2017-11-08 | 2018-05-18 | 中国航发北京航科发动机控制系统科技有限责任公司 | A kind of leverage for realizing division function |
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| Publication number | Publication date |
|---|---|
| CN102953777B (en) | 2015-07-08 |
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