CN103233791A - Differential pressure type valve lift control system - Google Patents
Differential pressure type valve lift control system Download PDFInfo
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- CN103233791A CN103233791A CN2013101178632A CN201310117863A CN103233791A CN 103233791 A CN103233791 A CN 103233791A CN 2013101178632 A CN2013101178632 A CN 2013101178632A CN 201310117863 A CN201310117863 A CN 201310117863A CN 103233791 A CN103233791 A CN 103233791A
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Abstract
The invention relates to the technical field of machine design, in particular to a differential pressure type valve lift control system. The differential pressure type valve lift control system comprises an intake valve, an exhaust valve, an air compressor, a turbine, a lever, a tappet, a volume cavity, a movable body, a supporting rod and connecting pipes, wherein the movable body is mounted in the volume cavity and is in sealed contact with the inner wall of the volume cavity; a round hole is formed in the upper wall surface of the volume cavity; the lower end of the supporting rod penetrates the round hole in the upper wall surface of the volume cavity to be in contact with an inclined plane of a triangle groove; and the upper end of the supporting rod is in contact with the lever. When pressure in an air intake pipe of a motor is larger than that of an exhaust pipe of the motor, the supporting rod moves downward, the lift of the intake valve is enlarged; and when the pressure in the air intake pipe of the motor is smaller than that of the exhaust pipe of the motor, the supporting rod moves upward, and the lift of the intake valve is lessened. The differential pressure type valve lift control system is reasonable in design, simple in structure, and suitable for motor valve lift for changeable systems.
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 differential valve lift control system.
Background technique
Traditional petrolic valve lift is fixing immutable, and just the cam profile of camshaft has only 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 the cam profile design 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 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, a kind of differential valve lift control system 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, first connecting tube, cavity volume, pole, moving body, triangular groove and second connecting tube, 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, triangular groove is positioned at the top of moving body, the upper wall surface of cavity volume has a circular hole, the lower end of pole contacts with the inclined-plane of triangular groove after passing circular hole on the cavity volume upper wall surface, the upper end of pole contacts with lever, the two ends of first connecting tube respectively with the left wall of cavity volume, engine air inlet tube is connected, the two ends of second connecting tube respectively with the right wall of cavity volume, engine exhaust pipe is connected.
In the present invention, moving body can be in cavity volume move left and right, pole can move up and down, the operation angle of lever can change along with moving up and down of pole.When the pressure in the engine air inlet tube during greater than the pressure in the engine exhaust pipe, the cavity volume internal pressure in moving body left side is bigger, and moving body moves right, thereby makes pole moving down, and it is big that the intake valve lift becomes.When the pressure in the engine air inlet tube during less than the pressure in the engine exhaust pipe, the cavity volume internal pressure on moving body right side is bigger, and moving body is moved to the left, thereby makes pole moving up, and the intake valve lift diminishes.
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 special control mechanism again.
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, 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, first connecting tube, 17, cavity volume, 18, pole, 19, moving body, 20, triangular groove, 21, second connecting tube.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is prerequisite with the technical solution of the present invention, 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: 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, first connecting tube 16, cavity volume 17, pole 18, moving body 19, triangular groove 20 and second connecting tube 21, 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 19 is installed in the cavity volume 17 and with the internal face sealing of cavity volume 17 and contacts, triangular groove 20 is positioned at the top of moving body 19, the upper wall surface of cavity volume 17 has a circular hole, the lower end of pole 18 contacts with the inclined-plane of triangular groove 20 after passing circular hole on cavity volume 17 upper wall surfaces, the upper end of pole 18 contacts with lever 14, the two ends of first connecting tube 16 respectively with the left wall of cavity volume 17, engine air inlet tube 10 is connected, the two ends of second connecting tube 21 respectively with the right wall of cavity volume 17, engine exhaust pipe 13 is connected.
In the present invention, moving body 19 can be in cavity volume 17 move left and right, pole 18 can move up and down, the operation angle of lever 14 can change along with moving up and down of pole 18.When the pressure in the engine air inlet tube 10 during greater than the pressure in the engine exhaust pipe 13, cavity volume 17 internal pressures in moving body 19 left sides are bigger, and moving body 19 moves right, thereby pole 18 is moved down, and it is big that the intake valve lift becomes.When the pressure in the engine air inlet tube 10 during less than the pressure in the engine exhaust pipe 13, cavity volume 17 internal pressures on moving body 19 right sides are bigger, and moving body is moved to the left, thereby pole 18 is moved up, and the intake valve lift diminishes.
Claims (1)
1. differential valve lift control system, 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, it is characterized in that, also comprise first connecting tube (16), cavity volume (17), pole (18), moving body (19), triangular groove (20) and second connecting tube (21), the cross section of cavity volume (17) is rectangular, moving body (19) is installed in the cavity volume (17) and with the internal face sealing of cavity volume (17) and contacts, triangular groove (20) is positioned at the top of moving body (19), the upper wall surface of cavity volume (17) has a circular hole, the lower end of pole (18) contacts with the inclined-plane of triangular groove (20) after passing circular hole on cavity volume (17) upper wall surface, the upper end of pole (18) contacts with lever (14), the two ends of first connecting tube (16) respectively with the left wall of cavity volume (17), engine air inlet tube (10) is connected, the two ends of second connecting tube (21) respectively with the right wall of cavity volume (17), engine exhaust pipe (13) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101178632A CN103233791A (en) | 2013-04-07 | 2013-04-07 | Differential pressure type valve lift control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101178632A CN103233791A (en) | 2013-04-07 | 2013-04-07 | Differential pressure type valve lift control system |
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| CN103233791A true CN103233791A (en) | 2013-08-07 |
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| CN2013101178632A Pending CN103233791A (en) | 2013-04-07 | 2013-04-07 | Differential pressure type valve lift control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929716A (en) * | 2015-05-24 | 2015-09-23 | 聂瑜 | Air pressure difference value control type dislocation stress device |
| CN104929720A (en) * | 2015-06-08 | 2015-09-23 | 上海交通大学 | Rotary type air inflow adjusting system |
| CN105019962A (en) * | 2015-06-08 | 2015-11-04 | 上海交通大学 | Differential pressure type air inflow amount control device |
| CN105134324A (en) * | 2015-06-08 | 2015-12-09 | 上海交通大学 | Pneumatic type air intake amount adjusting system |
| CN106285823A (en) * | 2016-08-16 | 2017-01-04 | 上海交通大学 | Engine with supercharger valve stroke continuous changeable device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808671A (en) * | 2012-08-30 | 2012-12-05 | 上海交通大学 | Air intake valve lift-variable system in air intake pressure regulating type |
| CN102966399A (en) * | 2012-11-29 | 2013-03-13 | 上海交通大学 | Tappet rod device with transverse moving type moving body |
| CN102966397A (en) * | 2012-11-15 | 2013-03-13 | 上海交通大学 | Pressure differential contact point moving system |
-
2013
- 2013-04-07 CN CN2013101178632A patent/CN103233791A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808671A (en) * | 2012-08-30 | 2012-12-05 | 上海交通大学 | Air intake valve lift-variable system in air intake pressure regulating type |
| CN102966397A (en) * | 2012-11-15 | 2013-03-13 | 上海交通大学 | Pressure differential contact point moving system |
| CN102966399A (en) * | 2012-11-29 | 2013-03-13 | 上海交通大学 | Tappet rod device with transverse moving type moving body |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929716A (en) * | 2015-05-24 | 2015-09-23 | 聂瑜 | Air pressure difference value control type dislocation stress device |
| CN104929720A (en) * | 2015-06-08 | 2015-09-23 | 上海交通大学 | Rotary type air inflow adjusting system |
| CN105019962A (en) * | 2015-06-08 | 2015-11-04 | 上海交通大学 | Differential pressure type air inflow amount control device |
| CN105134324A (en) * | 2015-06-08 | 2015-12-09 | 上海交通大学 | Pneumatic type air intake amount adjusting system |
| CN106285823A (en) * | 2016-08-16 | 2017-01-04 | 上海交通大学 | Engine with supercharger valve stroke continuous changeable device |
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Application publication date: 20130807 |