CN102953777B - Inlet pressure control type camshaft device - Google Patents
Inlet pressure control type camshaft device Download PDFInfo
- Publication number
- CN102953777B CN102953777B CN201210409136.9A CN201210409136A CN102953777B CN 102953777 B CN102953777 B CN 102953777B CN 201210409136 A CN201210409136 A CN 201210409136A CN 102953777 B CN102953777 B CN 102953777B
- Authority
- CN
- China
- Prior art keywords
- moving body
- cavity volume
- air inlet
- engine
- air outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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, particularly a kind of inlet pressure control type camshaft 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 inlet pressure control type camshaft 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 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, 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 charge 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 Compress Spring, and camshaft is also moved to the left together, thus makes intake valve lift become large.At speed operation, engine charge overpressure is lower, and the cavity volume internal pressure on the right side of moving body is also lower, and under the elastic reaction 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 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 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 air inlet tube 10 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 Compress Spring 22, and camshaft 17 is also moved to the left together, thus makes intake valve lift become large.At speed operation, engine air inlet tube 10 internal pressure is lower, and cavity volume 21 internal pressure on the right side of moving body 20 is also lower, under the elastic reaction 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. an inlet pressure control type camshaft 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, the suction port of engine exhaust pipe (13) is connected with the air outlet of air outlet flue (5), the left end of lever (14) is connected with the upper end of intake valve (6), the right-hand member of lever (14) is connected with cam (16), 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 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 CN102953777A (en) | 2013-03-06 |
| CN102953777B true CN102953777B (en) | 2015-07-08 |
Family
ID=47763092
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102953777B (en) |
Families Citing this family (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 |
Citations (3)
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-10-24 CN CN201210409136.9A patent/CN102953777B/en not_active Expired - Fee Related
Patent Citations (3)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102953777A (en) | 2013-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102926833B (en) | Mechanical type lever proportion regulating mechanism | |
| CN102966403B (en) | Device for adjusting lift of intake valve of supercharged engine | |
| CN102808671B (en) | Air intake valve lift-variable system in air intake pressure regulating type | |
| CN102979593B (en) | Left-and-right moving device of mobile rod | |
| CN102926835B (en) | Two-valve stroke synchronously-variable device | |
| CN102926834B (en) | Mechanical type valve stroke continuously-variable device | |
| CN103233791A (en) | Differential pressure type valve lift control system | |
| CN102953777B (en) | Inlet pressure control type camshaft device | |
| CN102966400B (en) | System for adjusting height of moving block type tappet rod | |
| CN102966397B (en) | Pressure differential contact point moving system for adjusting engine valve lift | |
| CN103277164A (en) | Push-pull valve height variable system | |
| CN102953779B (en) | Lever regulation type lift variable system | |
| CN102966395B (en) | Single-valve height pneumatic control system | |
| CN103291404A (en) | Adjustable tension mechanism with stepper motor | |
| CN102966394B (en) | Dual moving block synchronous movement type mechanical system for valve lift modulation of engine | |
| CN102953780B (en) | Exhaust pressure control type camshaft device | |
| CN102966405B (en) | Stretching valve lift variable device | |
| CN102953781B (en) | Mechanical moving rod sliding system for adjusting engine valve lift | |
| CN103233794A (en) | Valve adjusting mechanism with groove structure | |
| CN102966396B (en) | Dual valve height pneumatic control system | |
| CN102966402B (en) | System for synchronously adjusting lifts of intake valve and exhaust valve of supercharged engine | |
| CN102966404B (en) | Stretching contact point mobile system | |
| CN102996197B (en) | Up-down moving device of movable rod | |
| CN202883035U (en) | Lever ratio pressure control device | |
| CN203008987U (en) | Spring type regulating system for operation angles of lever |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20171024 |