CN102562207B - The continuous variable valve timing of Independent adjustable joint and lift mechanisms - Google Patents
The continuous variable valve timing of Independent adjustable joint and lift mechanisms Download PDFInfo
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- CN102562207B CN102562207B CN201010577184.XA CN201010577184A CN102562207B CN 102562207 B CN102562207 B CN 102562207B CN 201010577184 A CN201010577184 A CN 201010577184A CN 102562207 B CN102562207 B CN 102562207B
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- valve
- speed
- speed change
- roller
- change fork
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Abstract
The present invention relates to continuous variable valve timing and the lift mechanisms of a kind of Independent adjustable joint, it comprises camshaft, speed-changing swing system, fulcrum rod, crank-rocker, eccentric shaft, roller rock arm, torque spring.Cam promotes speed-changing swing system, speed-changing swing system with the roller in fulcrum rod for fulcrum does the swing of adjustable oscillating speed and amplitude.The vertical position of fulcrum rod is controlled by crank-rocker, the horizontal position of cam production fulcrum rod is controlled by involute, thus change the position of the fulcrum of speed-changing swing system, thus change the swing of speed-changing swing system, reach the object of independent regulation valve timing and lift within the specific limits.
Description
Technical field
The present invention relates to continuous variable valve timing and the lift mechanisms of a kind of Independent adjustable joint, the lift of the engine valve that it drives and timing can do independent regulation within the specific limits.
Background technique
The valve actuation of internal-combustion engine adopts continuous variable valve timing can improve the inflation rate of cylinder of internal-combustion engine, improves power efficiency, reduces cylinder operation temperature, reduce the disposal of pollutants of internal-combustion engine.The intake valve of internal-combustion engine drives the intake efficiency adopting continuously variable valve lift technology can improve internal-combustion engine, reduces oil consumption, improves internal-combustion engine to the speed of response of throttle.
Publication number CN101149000A is called in the patent of the variable valve actuation of internal-combustion engine, the timing of valve and lift are mutually related, namely the lift that valve endurance of opening and valve are opened is proportional relation, but the problem brought thus to take into account the advantage that Variable Valve Time and lift range variable these two kinds regulate very well.
If continuous variable valve timing and lift can be combined in all, and relatively independent adjustment can be accomplished, the practical effect of internal-combustion engine so can be improved.
Be that CN101858233 is called and comprises in the full Variable Valve Time method of speed-changing swing mechanism and the patent of invention of mechanism at publication number, shown method and mechanism can complete the function of continuous variable valve timing, although change the effect that parameter can reach fine setting valve lift, can not independent regulation.Adopt the principle of the speed-changing swing system of this mechanism, only need the adjustable extent redesigning fulcrum controlling mechanism, just can adjust separately the timing of valve and lift.
Summary of the invention
This patent is improve above-mentioned deficiency to make new solution, at publication number be the two speed change fork driving mechanism of fulcrum-variable knot connection in the patent of invention of CN101858233 basis on a kind of new mechanism is proposed, realize independently regulating valve timing and lift.
The invention provides continuous variable valve timing and the lift mechanisms of a kind of like this Independent adjustable joint, this mechanism comprises: camshaft, and this camshaft is associated with crank rotation, drives speed-changing swing mechanism urges valve to open or close; Speed-changing swing system, this speed-changing swing system is linked together by two speed change forks, and the promotion being subject to described camshaft produces and swings, and promotes valve opening and closes; Fulcrum rod, with roller, the contacts side surfaces of roller and described speed change fork, forms the support to described speed change fork; Crank-rocker, one end is connected with rotating shaft with described fulcrum rod; Eccentric shaft, axle surface contacts with described fulcrum rod; Roller rock arm, under described speed-changing swing systems force, is converted into the to-and-fro motion promoting valve by its oscillating motion; Torque spring, one end is fixed in cylinder head, and the other end is fixed on the one end of the described speed change fork having fixed rotating shaft.There is roller speed change fork one end for described speed-changing swing system, and the other end is connected in the projection of another root speed change fork intermediate portion, and there is protruding speed change fork centre, and one end is fixed on cylinder head to rotate freely rotating shaft.The roller contact face of the speed-changing swing system of described driving valve and the described roller rock arm of its promotion is divided into two parts, promote the part of the unlatching of valve and the part keeping valve-closing, corresponding pendulum angle scope is divided into two parts, a part keeps valve-closing, and another part promotes valve opening; The initial position of speed-changing swing system is at the angular range keeping valve-closing, and ultimate position is in the angular orientation making valve open completely.Described crank-rocker controls the vertical position of fulcrum rod, and described eccentric shaft controls the horizontal position of fulcrum rod, and the adjustment movement of the two is independently moved.
Accompanying drawing explanation
Fig. 1 is schematic diagram, shows the position between mechanism's parts and annexation.
Tu2Shi mechanism regulates separately the schematic diagram of valve lift, shows the combine regulation action of crank-rocker and eccentric shaft in mechanism.
Fig. 3 is the schematic diagram of valve lift, shows the valve lift diagram that mechanism adjusts separately valve lift.
Tu4Shi mechanism regulates separately the schematic diagram of valve timing, shows the combine regulation action of crank-rocker and eccentric shaft in mechanism.
Fig. 5 is the schematic diagram of valve lift, shows the valve lift diagram that mechanism adjusts separately valve timing.
The schematic diagram of a kind of improvement of Tu6Shi mechanism, shows the another kind of form adopting universal component.
Embodiment
Come below with reference to the accompanying drawings to describe an exemplary embodiments.
Fig. 1 is schematic diagram, shows the position between mechanism's parts and annexation.There are roller 12 and axle 11 in first speed change fork 7 one end, roller 12 and cam 1 close contact, and is subject to the promotion of cam 1; The other end is connected with the boss of speed-changing swing 2 by axle 10.One end of second speed change fork 6 is fixed in cylinder head by rotating shaft 5, can rotate according to rotating shaft 5.Fulcrum rod 8 there is roller 24, the contacts side surfaces of roller 24 and the first speed change fork 7, become the strong point that the first speed change fork 7 swings; One end of fulcrum rod 8 is connected to one end of crank-rocker 22 by rotating shaft 23, can be drawn move up and down by the rotation of crank-rocker 22.The side of fulcrum rod 8 is subject to the top pressure of eccentric shaft 21, makes fulcrum rod 8 can support the lateral pressure of the first speed change fork 7.The end face close contact roller 13 of the second speed change fork 6, swings by self the opening and closing action that roller 13, axle 14 and roller rock arm 15 convert valve 19 to.Torque spring 3 one end is fixed in cylinder head 4, and the other end supports the second speed change fork 6, makes it the pressure of a generation transverse direction, promotes the first speed change fork 7 and extrudes fulcrum rod 8 and make it to fit tightly on the curved surface of eccentric shaft 21.Spring 17 and air door clip 16 and base 18 constitute valve spring assembly.
Fig. 2 mechanism regulates separately the schematic diagram of valve lift.The first speed change fork 7 can be promoted in cam 1 rotary course make it with the roller of fulcrum rod 8 as fulcrum does oscillating motion.Crank-rocker 22 rotates clockwise until the position shown in dotted line, and eccentric shaft 21 rotates clockwise simultaneously and turns to the position shown in dotted line, the two proportional relation of angular velocity of rotating, and makes the two start to rotate simultaneously, turns to the position shown in dotted line simultaneously.Now the roller of fulcrum rod 8 promotes the first speed change fork 7 and makes it to produce to swing, and changes the initial position of the second speed change fork 6 thus; And changing the position of the fulcrum of the first speed change fork 7 swing, the angle that the second speed change fork 6 is swung diminishes.
The schematic diagram of Fig. 3 valve lift, the adjustment action of mechanism can reach the effect of adjustment valve lift separately as shown in Figure 2, and as shown in the figure, the crankshaft angles that the endurance of valve opening is corresponding does not change, the lift of the just valve of change.Valve is in maximum lift until can keep timing constant in the scope of 1/2nd lifts of maximum lift, and namely the valve duration opening time is still exemplary 180 degree.
Fig. 4 mechanism regulates separately the schematic diagram of valve timing.The first speed change fork 7 can be promoted in cam 1 rotary course make it with the roller of fulcrum rod 8 as fulcrum does oscillating motion.Crank-rocker 22 rotates clockwise, and eccentric shaft 21 rotates clockwise simultaneously, the two proportional relation of angular velocity of rotating, and makes the two start to rotate simultaneously, turns to the position shown in dotted line simultaneously.Now the roller of fulcrum rod 8 promotes the first speed change fork 7 and makes it to produce to swing, and changes the initial position of the second speed change fork 6 thus; And changing the position of the fulcrum of the first speed change fork 7 swing, the angle that the second speed change fork 6 is swung diminishes.Position shown in dotted line is the position of mechanism for wide angle timing.
The schematic diagram of Fig. 5 valve lift, the adjustment action of mechanism can reach the effect of the valve timing of adjustment separately as shown in Figure 4, as shown in the figure, the maximum lift of valve does not change, the time of valve opening and the crankshaft angles corresponding to the time of closedown change, and the timing of valve obtains independent adjustment.Valve lift curve when position shown in dotted line is the position of mechanism for wide angle timing, its crankshaft angles visible is from 180 degree of broadenings to 360 degree, here the angle of the cam of hypothesis corresponding to cam is 360 degree, and that is mechanism now can make the valve duration opening time maximum crankshaft angles that can reach corresponding to cam.
The schematic diagram of a kind of improvement of Tu6Shi mechanism, shows the another kind of form adopting universal component.By the location swap of crank-rocker 22 and eccentric shaft 21, the parts same with the first speed change fork 7 are replaced fulcrum rod 8, the adjustment direction of crank-rocker 22 oppositely after, namely can reach the regulating effect of Fig. 1 to Fig. 5 shownschematically mechanism.
The driving mechanism of all not shown control mechanism in all figure, also the complete driving mechanism of not shown camshaft, therefore there is not difficult design in part, use known mechanical structure, the axle of cam by common chain drive by bent axle, the driving of control mechanism can use hydraulic pressure or electric system to complete.
In general, continuous variable valve timing and the lift mechanisms of Independent adjustable joint are utilize crank-rocker and eccentric shaft to combine the scroll wheel positions regulating fulcrum rod, the namely position of the fulcrum of speed-changing swing, make it to regulate arbitrarily in the non-vanishing delta-shaped region of area, thus reach approximate independent regulation valve timing and the object of lift.With regard to the mechanism of exemplary embodiments, in the scope that valve lift is maximum lift 1/2nd times to a times, the lift of valve and timing can independent regulation completely; Valve lift be maximum lift 1/2nd times in the scope of zero, the lift of valve and the adjustment proportionate relationship of timing are mutually related, namely valve lift be two/opening time of valve is also maximum open-interval 1/2nd for the moment; Valve lift is four/for the moment, and valve duration is also 1/4th.In the timing of independent regulation valve and the basis of lift, can also adjust according to actual needs simultaneously, meet the needs of internal-combustion engine with the most accurate valve event.
Above-mentioned describing is only used for explaining exemplary embodiments of the present invention, and it is not exclusive or the present invention is limited and concrete form disclosed in it.It will be understood by those skilled in the art that not departing from scope of the present invention, various change can be made and element wherein can be replaced with IF-AND-ONLY-IF element.In addition, a lot of amendment can be made and not depart from essential scope to make particular condition or material be applicable to purport of the present invention.Therefore, the invention is not restricted to as conceiving the specific embodiment realized disclosed in optimal mode of the present invention, but the present invention includes all mode of executions belonging to the scope of the invention.Without departing from the spirit and scope of the present invention, the present invention can implement in other modes beyond specific explanations and the mode illustrated.
Claims (4)
1. Independent adjustable joint continuous variable valve timing and a lift mechanisms, this mechanism comprises:
Camshaft, this camshaft is associated with crank rotation, drives speed-changing swing systems force valve to open or close;
Speed-changing swing system, this speed-changing swing system is linked together by the first speed change fork and the second speed change fork, and the promotion being subject to described camshaft produces and swings, and promotes valve opening and closes;
Fulcrum rod, with roller, the contacts side surfaces of roller and described first speed change fork, forms the support to described first speed change fork;
Crank-rocker, one end is connected with rotating shaft with described fulcrum rod;
Eccentric shaft, axle surface and described fulcrum rod contacts side surfaces;
Roller rock arm, under described speed-changing swing systems force, is converted into the to-and-fro motion promoting valve by oscillating motion;
Torque spring, one end is fixed in cylinder head, and the other end is fixed on the one end of the described second speed change fork having fixed rotating shaft.
2. the continuous variable valve timing of a kind of Independent adjustable joint as claimed in claim 1 and lift mechanisms, it is characterized in that there is roller first speed change fork one end of described speed-changing swing system, the other end is connected in the projection of the second speed change fork intermediate portion, and one end of the second speed change fork is fixed on cylinder head with fixed rotating shaft.
3. the continuous variable valve timing of a kind of Independent adjustable joint as claimed in claim 1 and lift mechanisms, it is characterized in that the roller contact face of the speed-changing swing system of described driving valve and the described roller rock arm of its promotion is divided into two parts, promote the part of the unlatching of valve and the part keeping valve-closing, corresponding pendulum angle scope is divided into two parts, a part keeps valve-closing, and another part promotes valve opening; The initial position of speed-changing swing system is at the angular range keeping valve-closing, and ultimate position is in the angular orientation making valve open completely.
4. the continuous variable valve timing of a kind of Independent adjustable joint as claimed in claim 1 and lift mechanisms, it is characterized in that described crank-rocker controls the vertical position of fulcrum rod, described eccentric shaft controls the horizontal position of fulcrum rod, and the adjustment movement of the two is independently moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010577184.XA CN102562207B (en) | 2010-12-07 | 2010-12-07 | The continuous variable valve timing of Independent adjustable joint and lift mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010577184.XA CN102562207B (en) | 2010-12-07 | 2010-12-07 | The continuous variable valve timing of Independent adjustable joint and lift mechanisms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562207A CN102562207A (en) | 2012-07-11 |
| CN102562207B true CN102562207B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010577184.XA Expired - Fee Related CN102562207B (en) | 2010-12-07 | 2010-12-07 | The continuous variable valve timing of Independent adjustable joint and lift mechanisms |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742221B (en) * | 2013-12-30 | 2016-03-30 | 长城汽车股份有限公司 | For motor distribution device and there is its vehicle |
| CN104847430A (en) * | 2015-03-23 | 2015-08-19 | 朱譞晟 | Double-acting sliding wall type independent full-adjustable variable valve timing and lifting mechanism |
| KR101683521B1 (en) * | 2015-09-21 | 2016-12-07 | 현대자동차 주식회사 | Continuous varible vavle lift apparatus and engine provided with the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10205216A1 (en) * | 2002-02-08 | 2003-08-28 | Bosch Gmbh Robert | Cam and lever drive system for reciprocating pump with variable piston stroke incorporates intermediate lever with movable fulcrum point bearing against spring-loaded lever |
| CN101705851A (en) * | 2009-11-10 | 2010-05-12 | 上海汽车集团股份有限公司 | Mechanical continuous variable valve lift driving device |
| CN101858233A (en) * | 2010-04-29 | 2010-10-13 | 朱譞晟 | Timing method and mechanism of fully variable valve including speed-changing swing mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010209861A (en) * | 2009-03-12 | 2010-09-24 | Hitachi Automotive Systems Ltd | Variable valve gear of internal combustion engine |
-
2010
- 2010-12-07 CN CN201010577184.XA patent/CN102562207B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10205216A1 (en) * | 2002-02-08 | 2003-08-28 | Bosch Gmbh Robert | Cam and lever drive system for reciprocating pump with variable piston stroke incorporates intermediate lever with movable fulcrum point bearing against spring-loaded lever |
| CN101705851A (en) * | 2009-11-10 | 2010-05-12 | 上海汽车集团股份有限公司 | Mechanical continuous variable valve lift driving device |
| CN101858233A (en) * | 2010-04-29 | 2010-10-13 | 朱譞晟 | Timing method and mechanism of fully variable valve including speed-changing swing mechanism |
Also Published As
| Publication number | Publication date |
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| CN102562207A (en) | 2012-07-11 |
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Granted publication date: 20160309 Termination date: 20191207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |