CN102808671B - Air intake valve lift-variable system in air intake pressure regulating type - Google Patents
Air intake valve lift-variable system in air intake pressure regulating type Download PDFInfo
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- CN102808671B CN102808671B CN201210316559.6A CN201210316559A CN102808671B CN 102808671 B CN102808671 B CN 102808671B CN 201210316559 A CN201210316559 A CN 201210316559A CN 102808671 B CN102808671 B CN 102808671B
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- intake valve
- pipe
- air intake
- end surface
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Abstract
The invention discloses an air intake valve lift-variable system in an air intake pressure regulating type, belonging to the technical field of internal combustion engines. The system comprises an air intake channel, an air exhaust channel, an air intake valve lower section, an air exhaust valve, an air intake valve upper section, a capacity cavity, a movable body, a perforation pipe, a movable block, an air inlet pipe, a connecting pipe and a spring, wherein the movable body is mounted in the capacity cavity and is contacted with the inner wall face of the capacity cavity in a sealing manner; the perforation pipe perforates the upper wall face and the lower wall face of the movable body; the movable block is mounted in the perforation pipe and is contacted with the inner wall face of the perforation pipe in a sealing manner; the lower end face of the movable block is a plane; the upper end face of the movable block is an inclined face; two ends of the connecting pipe are communicated with the left wall faces of the air intake pipe and the capacity cavity; the right wall face of the movable body is connected with the right wall face of the capacity cavity through the spring; when pressure in the air intake pipe is relatively large, the movable body is moved to right; the air intake valve lift is increased; when the pressure in the air intake pipe is relatively small, the movable body is moved to left; the air intake valve lift is reduced; and the intake valve variable-lift system is characterized by reasonable design and simple structure and is suitable for engine valve lift-variable systems.
Description
Technical field
What the present invention relates to is a kind of engine aspirating system of technical field of internal combustion engines, particularly a kind of suction pressure regulating type intake valve lift variable system.
Background technique
Traditional petrolic valve lift is fixing immutable, and namely the cam profile of camshaft only has one, 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 under full operating mode is selected to motor, consequently motor both can not get best high speed efficiency, also can not get best low speed torque, but obtained best balanced performance under full operating mode.The employing of lift range variable, makes motor can be met the valve lift of demand in high velocity and low velocity zone, thereby improves high engine speeds power and low speed torque.
Through the retrieval of prior art document is found, 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 is the hydraulic mechanism utilizing, and very high to sealing requirements, poorly sealed words easily cause fluid seepage; And because liquid exists certain compressibility, the speed of response that valve lift changes has certain retardance.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of suction pressure regulating type intake valve lift variable system is provided, the speed of response that can make valve lift change is very fast.
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 hypomere, exhaust valve, intake valve epimere, cavity volume, moving body, run through pipe, moving block, suction tude, connecting tube and spring, piston is arranged 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 is all connected with cylinder head, the lower end surface of intake valve hypomere, in the Jun firing chamber, lower end surface of exhaust valve, moving body is arranged in cavity volume and with the internal face sealing of cavity volume and contacts, run through two walls up and down that pipe runs through moving body, moving block is arranged on to run through in pipe and with the internal face sealing that runs through pipe and contacts, the lower end surface of moving block is plane, the upper-end surface of moving block is inclined-plane, intake valve epimere passes the upper wall surface of cavity volume and stretches into and runs through in pipe, the lower end surface of intake valve epimere contacts with the sealing of the upper-end surface of moving block, intake valve hypomere passes the lower wall surface of cavity volume and stretches into and runs through in pipe, the upper-end surface of intake valve hypomere contacts with the sealing of the lower end surface of moving block, the air outlet of suction tude is connected with the suction port of intake duct, the two ends of connecting tube respectively with suction tude, the left wall of cavity volume is connected, and the right wall of moving body is connected with the right wall of cavity volume by spring.
Further, the cross section of cavity volume is rectangular in the present invention, runs through pipe for uniform section pipe.
In the present invention, moving body and moving block can move left and right in cavity volume, and moving block also can followed intake valve epimere in pipe and move up and down together with intake valve hypomere running through.In the time that suction tude internal pressure is lower, moving body is moved to the left under the elastic reaction of spring, and moving block is also moved to the left simultaneously, the upper-end surface relative sliding of the lower end surface of intake valve epimere and moving block, intake valve hypomere moves up under the effect of holddown spring, thereby intake valve lift is diminished.In the time that suction tude internal pressure is higher, moving body moves right and Compress Spring, and moving block also moves right simultaneously, the upper-end surface relative sliding of the lower end surface of intake valve epimere and moving block, intake valve hypomere moves down under the effect of holddown spring, thereby makes intake valve lift become large.
Compared with prior art, the present invention has following beneficial effect and is: the present invention is reasonable in design, simple in structure, can realize the continuous variable of valve lift, and the speed of response that can make again valve lift change is very fast, and does not need special control mechanism.
Brief description of the drawings
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 hypomere, 7, exhaust valve, 8, intake valve epimere, 9, cavity volume, 10, moving body, 11, run through pipe, 12, moving block, 13, suction tude, 14, connecting tube, 15, spring.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, the present embodiment, taking technical solution of the present invention as prerequisite, provided 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: comprise cylinder 1, piston 2, cylinder head 3, intake duct 4, air outlet flue 5, intake valve hypomere 6, exhaust valve 7, intake valve epimere 8, cavity volume 9, moving body 10, run through pipe 11, moving block 12, suction tude 13, connecting tube 14 and spring 15, piston 2 is arranged 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 is all connected with cylinder head, the lower end surface of intake valve hypomere 6, in the Jun firing chamber, lower end surface of exhaust valve 7, moving body 10 is arranged in cavity volume 9 and with the internal face sealing of cavity volume 9 and contacts, run through two walls up and down that pipe 11 runs through moving body 10, moving block 12 is arranged on to run through in pipe 11 and with the internal face sealing that runs through pipe 11 and contacts, the lower end surface of moving block 12 is plane, the upper-end surface of moving block 12 is inclined-plane, intake valve epimere 8 passes the upper wall surface of cavity volume 9 and stretches into and runs through in pipe 11, the lower end surface of intake valve epimere 8 contacts with the upper-end surface sealing of moving block 12, intake valve hypomere 6 passes the lower wall surface of cavity volume 9 and stretches into and runs through in pipe 11, the upper-end surface of intake valve hypomere 6 contacts with the lower end surface sealing of moving block 12, the air outlet of suction tude 13 is connected with the suction port of intake duct 4, the two ends of connecting tube 14 respectively with suction tude 13, the left wall of cavity volume 9 is connected, and the right wall of moving body 10 is connected with the right wall of cavity volume 9 by spring 15, and the cross section of cavity volume 9 is rectangular, described in run through pipe 11 for uniform section pipe.
In the present invention, moving body 10 and moving block 12 can move left and right in cavity volume 9, and moving block 12 also can followed intake valve epimere 8 in 11 and move up and down together with intake valve hypomere 6 running through pipe.When suction tude 13 internal pressures are when lower, moving body 10 is moved to the left under the elastic reaction of spring 15, moving block 12 is also moved to the left simultaneously, the upper-end surface relative sliding of the lower end surface of intake valve epimere 8 and moving block 12, intake valve hypomere 6 moves up under the effect of holddown spring, thereby intake valve lift is diminished.When suction tude 13 internal pressures are when higher, moving body 10 moves right and Compress Spring 15, moving block 12 also moves right simultaneously, the upper-end surface relative sliding of the lower end surface of intake valve epimere 8 and 12 moving blocks, intake valve hypomere 6 moves down under the effect of holddown spring, thereby makes intake valve lift become large.
Claims (2)
1. a suction pressure regulating type intake valve lift variable system, comprise cylinder (1), piston (2), cylinder head (3), intake duct (4), air outlet flue (5), intake valve hypomere (6) and exhaust valve (7), piston (2) is arranged 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) is all connected with cylinder head, the lower end surface of intake valve hypomere (6), in the Jun firing chamber, lower end surface of exhaust valve (7), characterized by further comprising intake valve epimere (8), cavity volume (9), moving body (10), run through pipe (11), moving block (12), suction tude (13), connecting tube (14) and spring (15), moving body (10) is arranged in cavity volume (9) and with the internal face sealing of cavity volume (9) and contacts, run through two walls up and down that pipe (11) runs through moving body (10), moving block (12) is arranged on to run through in pipe (11) and with the internal face sealing that runs through pipe (11) and contacts, the lower end surface of moving block (12) is plane, the upper-end surface of moving block (12) is inclined-plane, intake valve epimere (8) passes the upper wall surface of cavity volume (9) and stretches into and runs through in pipe (11), the lower end surface of intake valve epimere (8) contacts with the upper-end surface sealing of moving block (12), intake valve hypomere (6) passes the lower wall surface of cavity volume (9) and stretches into and runs through in pipe (11), the upper-end surface of intake valve hypomere (6) contacts with the lower end surface sealing of moving block (12), the air outlet of suction tude (13) is connected with the suction port of intake duct (4), the two ends of connecting tube (14) respectively with suction tude (13), the left wall of cavity volume (9) is connected, the right wall of moving body (10) is connected with the right wall of cavity volume (9) by spring (15), moving body (10) and moving block (12) can move left and right in cavity volume (9), and moving block (12) also can followed intake valve epimere (8) in pipe (11) and intake valve hypomere (6) moves up and down together running through.
2. suction pressure regulating type intake valve lift variable system according to claim 1, the cross section that it is characterized in that described cavity volume (9) is rectangular, described in to run through pipe (11) be uniform section pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210316559.6A CN102808671B (en) | 2012-08-30 | 2012-08-30 | Air intake valve lift-variable system in air intake pressure regulating type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210316559.6A CN102808671B (en) | 2012-08-30 | 2012-08-30 | Air intake valve lift-variable system in air intake pressure regulating type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102808671A CN102808671A (en) | 2012-12-05 |
| CN102808671B true CN102808671B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210316559.6A Expired - Fee Related CN102808671B (en) | 2012-08-30 | 2012-08-30 | Air intake valve lift-variable system in air intake pressure regulating type |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233791A (en) * | 2013-04-07 | 2013-08-07 | 上海交通大学 | Differential pressure type valve lift control system |
| CN103233794A (en) * | 2013-04-07 | 2013-08-07 | 上海交通大学 | Valve adjusting mechanism with groove structure |
| CN103233793A (en) * | 2013-04-07 | 2013-08-07 | 上海交通大学 | Valve control mechanism with stepping motor |
| CN103277164A (en) * | 2013-05-09 | 2013-09-04 | 上海交通大学 | Push-pull valve height variable system |
| CN106050348A (en) * | 2016-07-13 | 2016-10-26 | 孙志国 | Movable type slope dislocation adjusting mechanism |
| CN108252522A (en) * | 2018-04-12 | 2018-07-06 | 张敏 | A kind of injection apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990014505A1 (en) * | 1989-05-25 | 1990-11-29 | William Bulens | Device for automobile motor timing system with variable valve lifts |
| US5253621A (en) * | 1992-08-14 | 1993-10-19 | Group Lotus Plc | Valve control means |
| JP4109362B2 (en) * | 1998-11-26 | 2008-07-02 | 株式会社日本自動車部品総合研究所 | Variable valve lift control device at start-up |
| JP2004116365A (en) * | 2002-09-25 | 2004-04-15 | Toyota Motor Corp | Controller for variable valve system |
| US7350491B2 (en) * | 2005-10-24 | 2008-04-01 | Eaton Corporation | Lash adjuster and valve system |
| DE102006053703A1 (en) * | 2006-11-15 | 2008-06-05 | Uwe Hammer | Valve i.e. gas exchange valve, mechanism for use in internal combustion engine of motor vehicle, has control shaft with control contour rotated with cam shaft and actuating control valve, which controls oil flow |
| CN101907001A (en) * | 2010-07-23 | 2010-12-08 | 高伟 | Stepless variable valve lift mechanism |
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2012
- 2012-08-30 CN CN201210316559.6A patent/CN102808671B/en not_active Expired - Fee Related
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| CN102808671A (en) | 2012-12-05 |
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