CN202883035U - Lever ratio pressure control device - Google Patents
Lever ratio pressure control device Download PDFInfo
- Publication number
- CN202883035U CN202883035U CN201220496827.2U CN201220496827U CN202883035U CN 202883035 U CN202883035 U CN 202883035U CN 201220496827 U CN201220496827 U CN 201220496827U CN 202883035 U CN202883035 U CN 202883035U
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- China
- Prior art keywords
- cavity volume
- air inlet
- air outlet
- lever
- exhaust pipe
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- Expired - Fee Related
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Abstract
The utility model discloses a lever ratio pressure control device in the technical field of mechanical design. The lever ratio pressure control device comprises an inlet valve, an exhaust valve, a gas compressor, a turbine, a lever, a tappet, a containing cavity, a movable body, a connecting pipe and a spring. The movable body is installed in the containing cavity and is closely contacted with the inner wall face of the containing cavity. A square hole is formed in the upper wall face of the containing cavity. The lower end of a movable rod penetrates through the square hole in the upper wall face of the containing cavity and is fixedly connected with the upper wall face of the movable body, and the upper end of the movable rod is contacted with the lever. When pressure in an air inlet pipe of a motor is large, the movable body drives the movable rod to move right, and valve stroke of the inlet valve becomes large. When pressure in the air inlet pipe is small, the movable body drives the movable rod to move left, and the valve stroke of the inlet valve becomes small. The lever ratio pressure control device is reasonable in design, simple in structure and suitable for a system with changeable motor valve stroke.
Description
Technical field
The utility model relates to a kind of engine intake valve lift regulating system of mechanical designing technique, particularly a kind of lever ratio pressure control 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 utility model provides a kind of lever ratio pressure control device for above-mentioned the deficiencies in the prior art, and valve lift can realize continuous variable, and does not need special control mechanism.
The utility model is achieved through the following technical solutions, the utility model comprises: 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, connecting tube, cavity volume, moving body, movement rod 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, the two ends of lever respectively with the upper end of intake valve, the upper end of tappet is connected, 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 upper wall surface of cavity volume has a square opening, the upper wall surface that the lower end of movement rod is passed behind the square opening on the cavity volume upper wall surface with moving body is consolidated, the upper end of movement rod contacts with lever, the two ends of connecting tube respectively with the left 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 utility model, moving body and movement rod are consolidated, moving body can be in cavity volume move left and right, movement rod can followed the moving body move left and right.At high-speed working condition, the engine exhaust overpressure is higher, and the cavity volume internal pressure in moving body left side is also higher, and moving body drive movement rod moves right and Compress Spring, and it is large that the lever length ratio of movement rod the right and left becomes, thereby the intake valve lift is become greatly.In the low speed operating mode, the engine exhaust overpressure is lower, and the cavity volume internal pressure in moving body left side is also lower, under the elastic reaction of spring, moving body drives movement rod and is moved to the left, and the lever length ratio of movement rod the right and left diminishes, thereby the intake valve lift is diminished.
Compared with prior art, the utlity model has following beneficial effect is: the utility model 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 utility model;
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, 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, connecting tube, 17, cavity volume, 18, moving body, 19, movement rod, 20, spring.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, present embodiment provided detailed mode of execution and concrete operating process, but protection domain of the present utility model is not limited to following embodiment take technical solutions of the utility model as prerequisite.
Embodiment
As depicted in figs. 1 and 2, the utility model 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, connecting tube 16, cavity volume 17, moving body 18, movement rod 19 and spring 20, 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, the two ends of lever 14 respectively with the upper end of intake valve 6, the upper end of tappet 15 is connected, the cross section of cavity volume 17 is rectangular, moving body 18 is installed in the cavity volume 17 and with the internal face sealing of cavity volume 17 and contacts, the upper wall surface of cavity volume 17 has a square opening, the upper wall surface that the lower end of movement rod 19 is passed behind the square opening on cavity volume 17 upper wall surfaces with moving body 18 is consolidated, the upper end of movement rod 19 contacts with lever 14, the two ends of connecting tube 16 respectively with the left wall of cavity volume 17, engine exhaust pipe 13 is connected, and the right wall of moving body 18 is connected with the right wall of cavity volume 17 by spring 20.
In the utility model, moving body 18 and movement rod 19 are consolidated, and moving body 18 can be in cavity volume 17 interior move left and right, and movement rod 19 can followed moving body 18 move left and right.At high-speed working condition, engine exhaust pipe 13 internal pressures are higher, and cavity volume 17 internal pressures in moving body 18 left sides are also higher, and moving body 18 drive movement rods 19 move right and Compress Spring 20, it is large that the lever length ratio of movement rod 19 the right and lefts becomes, thereby make the intake valve lift become large.In the low speed operating mode, engine exhaust pipe 13 internal pressures are lower, and cavity volume 17 internal pressures in moving body 18 left sides are also lower, under the elastic reaction of spring 20, moving body 18 drives movement rod 19 and is moved to the left, and the lever length ratio of movement rod 19 the right and lefts diminishes, thereby the intake valve lift is diminished.
Claims (1)
1. lever ratio pressure control 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) and tappet (15), 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), the two ends of lever (14) respectively with the upper end of intake valve (6), the upper end of tappet (15) is connected, characterized by further comprising connecting tube (16), cavity volume (17), moving body (18), movement rod (19) and spring (20), the cross section of cavity volume (17) is rectangular, moving body (18) is installed in the cavity volume (17) and with the internal face sealing of cavity volume (17) and contacts, the upper wall surface of cavity volume (17) has a square opening, the upper wall surface that the lower end of movement rod (19) is passed behind the square opening on cavity volume (17) upper wall surface with moving body (18) is consolidated, the upper end of movement rod (19) contacts with lever (14), the two ends of connecting tube (16) respectively with the left wall of cavity volume (17), engine exhaust pipe (13) is connected, and the right wall of moving body (18) is connected by the right wall of spring (20) with cavity volume (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220496827.2U CN202883035U (en) | 2012-09-26 | 2012-09-26 | Lever ratio pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220496827.2U CN202883035U (en) | 2012-09-26 | 2012-09-26 | Lever ratio pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883035U true CN202883035U (en) | 2013-04-17 |
Family
ID=48074475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220496827.2U Expired - Fee Related CN202883035U (en) | 2012-09-26 | 2012-09-26 | Lever ratio pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883035U (en) |
-
2012
- 2012-09-26 CN CN201220496827.2U patent/CN202883035U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20130926 |