CN104612778A - Valve mechanism with adjustable stroke - Google Patents
Valve mechanism with adjustable stroke Download PDFInfo
- Publication number
- CN104612778A CN104612778A CN201310537892.4A CN201310537892A CN104612778A CN 104612778 A CN104612778 A CN 104612778A CN 201310537892 A CN201310537892 A CN 201310537892A CN 104612778 A CN104612778 A CN 104612778A
- Authority
- CN
- China
- Prior art keywords
- valve
- stroke
- rocking arm
- sliding block
- rocker arm
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
Abstract
The invention discloses a valve mechanism with the adjustable stroke. The valve mechanism comprises a camshaft and a valve, and a pushing part in contact with a cam of the camshaft is arranged on the valve; a wedge-shaped sliding block is arranged between the cam and the pushing part; the other end of the wedge-shaped sliding block is provided with a control end sliding block and a rocker arm; the control end sliding block is placed in a sliding way fixed to the rocker arm, and the wedge-shaped sliding block is connected with the control end sliding block through a rotating shaft; and a rocker arm fixed shaft is arranged at on end of the rocker arm, and a power mechanism for adjusting the inclination angle of the rocker arm is arranged at the other end of the rocker arm. The valve mechanism with the adjustable stroke can achieve stepless adjustment of the valve stroke, and the working efficiency of an engine can be effectively improved; and meanwhile, the waste gas can be effectively prevented from returning to an air inlet way, and the service life of the engine is prolonged.
Description
Technical field
The present invention relates to technical field of engines, specifically disclose the valve mechanism that a kind of stroke is adjustable.
Background technique
In the process of moving, during low speed and load, the little output power of the rpm low torque required for automobile is little for automobile; And when high speed large load operation, the required large output power of rotating speed height moment of torsion is large; The stroke of the valve of prior art is fixed, and uses valve stroke large equally when high speed and low speed.Motor best efficiency only appears in extremely narrow speed range, causes energy waste component wear.If valve stroke is adjustable, then motor best efficiency is existing by sending in extremely wide scope.Can effective fuel saving, improve power.Also have the multicylinder engines such as present 6 cylinder 8 cylinders, no matter large load or Smaller load works all simultaneously, cause the very large waste of power fuel, unnecessary cylinder operation just energy fuel saving temporarily can be stopped when Smaller load, suppose to have come with oil-break, then the function of holding one's breath of this cylinder can tie down other cylinders normally worked, and it is exactly necessary at this moment removing holding one's breath of unnecessary cylinder.If valve stroke can be transferred to Chang Kai and normally closed, so just holding one's breath of unnecessary cylinder can be removed.If need unnecessary cylinder to work together with normal working cylinder, this cylinder valve stroke is only needed to return to normal consistent.
Summary of the invention
The object of the invention is to: for the problem in above-mentioned conventional engines field, the valve mechanism that a kind of stroke is adjustable is provided, for the adjustment of the stroke to valve, increase the delivery efficiency of motor, improve working life.For the multicylinder engine that power is too strong, the technical program can be broken cylinder working, and fuel saving, also can answer cylinder working, recovers power.
To achieve these goals, the technical solution used in the present invention is:
The valve mechanism that stroke is adjustable, comprises camshaft and valve, valve is provided with the yoke frame contacted with the cam of camshaft, is provided with a wedge block between described cam and yoke frame; Wedge block one end is provided with control end slide block and rocking arm, and control end slide block is placed on and is fixed in the other slideway of rocking arm, and wedge block is connected with the rotating shaft in control end slide block by the connecting rod of end; Rocking arm is also respectively arranged with rocking arm stationary axle and the power mechanism for adjusting rock arm inclination angle.
Preferably, long arm end and the galianconism end of described rocking arm are connected to described power mechanism, and long arm end and galianconism end fill the spacing power mechanism of dynamic Control according to joined vehicle spatial depiction choosing.
Preferably, described power mechanism is combined formed by eccentric wheel, connecting rod, stepper motor.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
The present invention is the adjustable valve mechanism of a kind of stroke, and can realize the stepless adjustable of valve stroke, when automobile height rotating speed travels, valve stroke can be tuned up, the air entered is more, and output power is larger; When the automobile slow-speed of revolution travels, the stroke of valve can be turned down, to obtain required moment of torsion and power, make motor all can obtain maximum usefulness in high and low rotating speed.And waste gas not easily returns intake duct generation carbon distribution, extends the life-span of motor.For multicylinder engines such as 6 cylinder 8 cylinders, unnecessary cylinder operation is temporarily stopped to remove holding one's breath of unnecessary cylinder when Smaller load.The present invention can realize valve stroke can be transferred to Chang Kai and normally closed, so just can remove holding one's breath of unnecessary cylinder at any time.If need unnecessary cylinder to work together with normal working cylinder, only need to allow this cylinder valve stroke return to unanimously.
Accompanying drawing explanation
Fig. 1 is the view of priming stroke of the present invention.
Fig. 2 is the working state schematic representation of the present invention under priming stroke.
Fig. 3 is the working state schematic representation of the present invention after stroke alteration.
Mark in figure: 1-camshaft, 2-wedge block, 3-valve, 4-air flue, 5-firing chamber, 6-piston, 7-control end slide block, 8-slideway, 9-rocking arm stationary axle, 10-rocking arm, 11-yoke frame, 12-rotating shaft, 13-power mechanism, 14-cam.
Embodiment
With reference to Fig. 1-3, the valve mechanism that a kind of stroke is adjustable, comprises camshaft 1 and valve 3, valve 3 is provided with the yoke frame 11 contacted with the cam 14 of camshaft 1, is provided with a wedge block 2 between described cam 14 and yoke frame 11; Wedge block 2 one end is provided with control end slide block 7 and rocking arm 10, and control end slide block 7 is placed in the slideway 8 that is fixed on rocking arm 10, and wedge block 2 is connected by rotating shaft 12 with control end slide block 7; Rocking arm 10 one end is provided with rocking arm stationary axle 9, and the other end is provided with the power mechanism 13 for adjusting rock arm 10 inclination angle.Described power mechanism 13 is eccentric wheel, the combination of connecting rod, stepper motor forms, according to physical condition cam drive mechanism, worm and gear driving mechanism or other assembly power drive units.Those skilled in the art can change the angle of inclination of rocking arm 10 in conjunction with prior art by described power mechanism, therefore do not do detailed repeating to the concrete structure of power mechanism 13 at this.
Described rocking arm 10 is the upper end that inverted "L" shaped, described rocking arm 10 stationary axle is arranged at rocking arm 10, and the long arm end of rocking arm 10 and galianconism end select one end to arrange described power mechanism 13 according to real space condition.
Setting is when rocking arm 13 inclination angle is constant, and rocking arm 13 is parallel with valve 3, the rotation of camshaft 1, drives wedge block 2 to move downward, while the pressing down of wedge block 2, open valve 3.
When rocking arm 10 is with certain inclination angle, namely, when rocking arm 10 is heeling condition, when camshaft 1 rotates, the movement in substantially horizontal while wedge block 2 moves downward, is had, the stroke of now wedge block 2 vertical direction motion will reduce to some extent, thus changes the stroke of valve 3.Angle of inclination is larger within the specific limits, and valve stroke is less.
Automobile is when lower-speed state travels, and turned down by valve 3 stroke, valve 3 can not be opened ahead of time, piston 6 in firing chamber 5 extrudes, the waste gas that fuel combustion produces, and can not return air flue 4, thus effectively prevent air flue 4 carbon distribution, effectively improve the working life of motor.
Claims (3)
1. the valve mechanism that a stroke is adjustable, comprise camshaft (1) and valve (3), valve (3) is provided with the yoke frame (11) contacted with the cam of camshaft (1) (14), it is characterized in that, between described cam (14) and yoke frame (11), be provided with a wedge block (2); Wedge block (2) one end is provided with control end slide block (7) and rocking arm (10), control end slide block (7) is placed on and is fixed in the other slideway (8) of rocking arm (10), and wedge block (2) is connected with the rotating shaft (12) in control end slide block (7) by the connecting rod of end; Rocking arm (10) is also respectively arranged with rocking arm stationary axle (9) and the power mechanism (13) for adjusting rock arm (10) inclination angle.
2. the valve mechanism that stroke according to claim 1 is adjustable, is characterized in that, the long arm end of described rocking arm (10) and galianconism end are connected to described power mechanism (13).
3. the valve mechanism that stroke according to claim 1 is adjustable, is characterized in that, described power mechanism (13) is combined formed by eccentric wheel, connecting rod, stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310537892.4A CN104612778A (en) | 2013-11-04 | 2013-11-04 | Valve mechanism with adjustable stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310537892.4A CN104612778A (en) | 2013-11-04 | 2013-11-04 | Valve mechanism with adjustable stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612778A true CN104612778A (en) | 2015-05-13 |
Family
ID=53147400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310537892.4A Pending CN104612778A (en) | 2013-11-04 | 2013-11-04 | Valve mechanism with adjustable stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104612778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021131191A1 (en) * | 2019-12-25 | 2021-07-01 | 川崎重工業株式会社 | Variable valve mechanism |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205634A (en) * | 1978-02-17 | 1980-06-03 | Tourtelot Edward M Jr | Variable valve timing mechanism |
| FR2570123B1 (en) * | 1984-09-11 | 1988-11-18 | Peugeot | VARIABLE DRIVE VALVE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE |
| DE19811502A1 (en) * | 1998-03-17 | 1999-09-23 | Claus Hohmann | Valve drive with variable valve lift for IC engine |
| CN101457665A (en) * | 2007-12-14 | 2009-06-17 | 现代自动车株式会社 | Continuous variable valve lift system |
| CN101881198A (en) * | 2010-03-09 | 2010-11-10 | 于宥源 | Engine variable power distribution control system |
| CN102852585A (en) * | 2012-09-28 | 2013-01-02 | 长城汽车股份有限公司 | Continuous and changeable valve lift control mechanism |
| CN103256091A (en) * | 2013-05-24 | 2013-08-21 | 田丽欣 | Engine retarder |
| CN203570378U (en) * | 2013-11-04 | 2014-04-30 | 杨洪显 | Valve mechanism with adjustable stroke |
-
2013
- 2013-11-04 CN CN201310537892.4A patent/CN104612778A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205634A (en) * | 1978-02-17 | 1980-06-03 | Tourtelot Edward M Jr | Variable valve timing mechanism |
| FR2570123B1 (en) * | 1984-09-11 | 1988-11-18 | Peugeot | VARIABLE DRIVE VALVE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE |
| DE19811502A1 (en) * | 1998-03-17 | 1999-09-23 | Claus Hohmann | Valve drive with variable valve lift for IC engine |
| CN101457665A (en) * | 2007-12-14 | 2009-06-17 | 现代自动车株式会社 | Continuous variable valve lift system |
| CN101881198A (en) * | 2010-03-09 | 2010-11-10 | 于宥源 | Engine variable power distribution control system |
| CN102852585A (en) * | 2012-09-28 | 2013-01-02 | 长城汽车股份有限公司 | Continuous and changeable valve lift control mechanism |
| CN103256091A (en) * | 2013-05-24 | 2013-08-21 | 田丽欣 | Engine retarder |
| CN203570378U (en) * | 2013-11-04 | 2014-04-30 | 杨洪显 | Valve mechanism with adjustable stroke |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021131191A1 (en) * | 2019-12-25 | 2021-07-01 | 川崎重工業株式会社 | Variable valve mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150513 |
|
| RJ01 | Rejection of invention patent application after publication |