CN102926834A - Mechanical type valve stroke continuously-variable device - Google Patents
Mechanical type valve stroke continuously-variable device Download PDFInfo
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- CN102926834A CN102926834A CN2012103889780A CN201210388978A CN102926834A CN 102926834 A CN102926834 A CN 102926834A CN 2012103889780 A CN2012103889780 A CN 2012103889780A CN 201210388978 A CN201210388978 A CN 201210388978A CN 102926834 A CN102926834 A CN 102926834A
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Abstract
The invention relates to a mechanical type valve stroke continuously-variable device which belongs to the technical field of mechanical design. The mechanical type valve stroke continuously-variable device comprises an inlet channel, an exhaust channel, an inlet valve lower segment, an exhaust valve, an inlet valve upper segment, a volume cavity, a movable body, a through tube, a movable block and a movable rod, wherein the movable body is arranged in the volume cavity and hermetically is contact with the inner wall surface of the volume cavity; the through tube penetrates through the upper wall surface and the lower wall surface of the movable body; the movable block is arranged in the through tube and hermetically is contact with the inner wall surface of the through tube; the lower end surface of the movable block forms a plane, and the upper end surface of the movable block forms a slope; the inlet valve upper segment penetrates through the upper wall surface of the volume cavity and extends into the through tube, and the lower end surface of the inlet valve upper segment hermetically is contact with the upper end surface of the movable block. When the movable body moves towards right, the stroke of an inlet valve is lengthened, when the movable body moves towards left, the stroke of the inlet valve is shortened, and the continuous variation of the stroke of the inlet valve can be realized. The mechanical type valve stroke continuously-variable device disclosed by the invention is reasonable in design, simple in structure and suitable for the inlet valve stroke variable system of an engine.
Description
Technical field
What the present invention relates to is the engine aspirating system in a kind of mechanical designing technique field, particularly a kind of mechanical type valve lift continuous changeable 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 is the hydraulic mechanism that utilizes, and very high to sealing requirements, poorly sealed words cause fluid seepage easily; And because there is certain compressibility in liquid, 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 mechanical type valve lift continuous changeable device is provided, the speed of response that valve lift is changed is very fast.
The present invention is achieved through the following technical solutions, the present invention includes: comprise cylinder, piston, cylinder head, intake duct, air outlet flue, the intake valve hypomere, exhaust valve, the intake valve epimere, cavity volume, moving body, run through pipe, moving block and movement rod, piston is installed in the space that cylinder surrounds and with the internal face sealing of cylinder and contacts, intake duct, air outlet flue all is connected with cylinder head, moving body is installed in the cavity volume and with the internal face sealing of cavity volume and contacts, run through up and down two walls that pipe runs through moving body, moving block is installed in to run through in the pipe and with the internal face sealing that runs through pipe and contacts, the lower end surface of moving block is the plane, the upper-end surface of moving block is the inclined-plane, the intake valve epimere passes the upper wall surface of cavity volume and stretches into and runs through in the pipe, the lower end surface of intake valve epimere contacts with the sealing of the upper-end surface of moving block, the intake valve hypomere passes the lower wall surface of cavity volume and stretches into and runs through in the pipe, the upper-end surface of intake valve hypomere contacts with the sealing of the lower end surface of moving block, and the left wall that movement rod passes cavity volume is connected with the left wall of moving body.
Further, the cross section of cavity volume is rectangular in the present invention, runs through pipe and is the uniform section pipe.
In the present invention, moving body and moving block can be in cavity volume move left and right, moving block also can follow the intake valve epimere within running through pipe and the intake valve hypomere moves up and down together.In the low speed operating mode, when needs intake valve lift diminishes, the pulling movement rod is moved to the left, then moving body and moving block also are moved to the left simultaneously, the upper-end surface relative sliding of the lower end surface of intake valve epimere and moving block, the intake valve hypomere moves up under the effect of holddown spring, thereby the intake valve lift is diminished.At high-speed working condition, when needs intake valve lift becomes large, the promotion movement rod moves right, then moving body and moving block also move right simultaneously, the upper-end surface relative sliding of the lower end surface of intake valve epimere and moving block, the intake valve hypomere moves down under the effect of holddown spring, thereby makes the 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, and is simple in structure, can take into account preferably the high and low rotating speed operating mode of motor, and the speed of response that valve lift is changed is very fast.
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, the intake valve hypomere, 7, exhaust valve, 8, the intake valve epimere, 9, cavity volume, 10, moving body, 11, run through pipe, 12, moving block, 13, movement rod.
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: 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 and movement rod 13, piston 2 is installed in the space that cylinder 1 surrounds and with the internal face sealing of cylinder 1 and contacts, intake duct 4, air outlet flue 5 all is connected with cylinder head, moving body 10 is installed in the cavity volume 9 and with the internal face sealing of cavity volume 9 and contacts, run through up and down two walls that pipe 11 runs through moving body 10, moving block 12 is installed in to run through in the pipe 11 and with the internal face sealing that runs through pipe 11 and contacts, the lower end surface of moving block 12 is the plane, the upper-end surface of moving block 12 is the inclined-plane, intake valve epimere 8 passes the upper wall surface of cavity volume 9 and stretches into and runs through in the 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 the pipe 11, the upper-end surface of intake valve hypomere 6 contacts with the lower end surface sealing of moving block 12, the left wall that movement rod 13 passes cavity volume 9 is connected with the left wall of moving body 10, the cross section of cavity volume 9 is rectangular, and the described pipe 11 that runs through is the uniform section pipe.
In the present invention, moving body 10 and moving block 12 can be in cavity volume 9 interior move left and right, and moving block 12 also can follow intake valve epimere 8 within running through pipe 11 and intake valve hypomere 6 moves up and down together.In the low speed operating mode, when needs intake valve lift diminishes, pulling movement rod 13 is moved to the left, then moving body 10 and moving block 12 also are 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 the intake valve lift is diminished.At high-speed working condition, when needs intake valve lift becomes large, promoting movement rod 13 moves right, then moving body 10 and moving block 12 also move 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 the intake valve lift become large.Therefore, the present invention can take into account the high and low rotating speed operating mode of motor preferably.
Claims (2)
1. mechanical type valve lift continuous changeable device, 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 installed in the space that cylinder (1) surrounds and with the internal face sealing of cylinder (1) and contacts, intake duct (4), air outlet flue (5) all is connected with cylinder head, characterized by further comprising intake valve epimere (8), cavity volume (9), moving body (10), run through pipe (11), moving block (12) and movement rod (13), moving body (10) is installed in the cavity volume (9) and with the internal face sealing of cavity volume (9) and contacts, run through up and down two walls that pipe (11) runs through moving body (10), moving block (12) is installed in to run through in the pipe (11) and with the internal face sealing that runs through pipe (11) and contacts, the lower end surface of moving block (12) is the plane, the upper-end surface of moving block (12) is the inclined-plane, intake valve epimere (8) passes the upper wall surface of cavity volume (9) and stretches into and runs through in the 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 the pipe (11), the upper-end surface of intake valve hypomere (6) contacts with the lower end surface sealing of moving block (12), and the left wall that movement rod (13) passes cavity volume (9) is connected with the left wall of moving body (10).
2. mechanical type valve lift continuous changeable device according to claim 1, the cross section that it is characterized in that described cavity volume (9) is rectangular, the described pipe (11) that runs through is the uniform section pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210388978.0A CN102926834B (en) | 2012-10-12 | 2012-10-12 | Mechanical type valve stroke continuously-variable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210388978.0A CN102926834B (en) | 2012-10-12 | 2012-10-12 | Mechanical type valve stroke continuously-variable device |
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| Publication Number | Publication Date |
|---|---|
| CN102926834A true CN102926834A (en) | 2013-02-13 |
| CN102926834B CN102926834B (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210388978.0A Active CN102926834B (en) | 2012-10-12 | 2012-10-12 | Mechanical type valve stroke continuously-variable device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103291405A (en) * | 2013-05-09 | 2013-09-11 | 上海交通大学 | Electrical lever-proportion adjusting mechanism |
| CN103334806A (en) * | 2013-05-09 | 2013-10-02 | 上海交通大学 | Electric height adjustment device of tappet |
| CN105971685A (en) * | 2016-07-13 | 2016-09-28 | 孙志国 | Automatic following system of valve stroke |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5463987A (en) * | 1994-07-13 | 1995-11-07 | Cukovich; Mark S. | Variable valve timing mechanism |
| US20020185090A1 (en) * | 2001-06-08 | 2002-12-12 | Trw Deutschland Gmbh | Device to actuate a gas shuttle valve in an internal combustion engine |
| JP2004116365A (en) * | 2002-09-25 | 2004-04-15 | Toyota Motor Corp | Controller for variable valve system |
| GB2443690A (en) * | 2006-11-09 | 2008-05-14 | Anthony Edgar Blackburn | Retractable cam system for an 8-stroke and 4-stroke cycle change engine |
| CN102588076A (en) * | 2012-03-27 | 2012-07-18 | 上海交通大学 | Volume cavity regulating intake device |
-
2012
- 2012-10-12 CN CN201210388978.0A patent/CN102926834B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5463987A (en) * | 1994-07-13 | 1995-11-07 | Cukovich; Mark S. | Variable valve timing mechanism |
| US20020185090A1 (en) * | 2001-06-08 | 2002-12-12 | Trw Deutschland Gmbh | Device to actuate a gas shuttle valve in an internal combustion engine |
| JP2004116365A (en) * | 2002-09-25 | 2004-04-15 | Toyota Motor Corp | Controller for variable valve system |
| GB2443690A (en) * | 2006-11-09 | 2008-05-14 | Anthony Edgar Blackburn | Retractable cam system for an 8-stroke and 4-stroke cycle change engine |
| CN102588076A (en) * | 2012-03-27 | 2012-07-18 | 上海交通大学 | Volume cavity regulating intake device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103291405A (en) * | 2013-05-09 | 2013-09-11 | 上海交通大学 | Electrical lever-proportion adjusting mechanism |
| CN103334806A (en) * | 2013-05-09 | 2013-10-02 | 上海交通大学 | Electric height adjustment device of tappet |
| CN105971685A (en) * | 2016-07-13 | 2016-09-28 | 孙志国 | Automatic following system of valve stroke |
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| Publication number | Publication date |
|---|---|
| CN102926834B (en) | 2014-11-19 |
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