CN101225759B - Variable spiracula lifting device - Google Patents
Variable spiracula lifting device Download PDFInfo
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- CN101225759B CN101225759B CN2008100260817A CN200810026081A CN101225759B CN 101225759 B CN101225759 B CN 101225759B CN 2008100260817 A CN2008100260817 A CN 2008100260817A CN 200810026081 A CN200810026081 A CN 200810026081A CN 101225759 B CN101225759 B CN 101225759B
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Abstract
The invention relates to a lift device for variable valves, comprising a valve arranged in the air passage of cylinder cover, a cam rotated synchronously with the engine crankshaft and a valve spring sleeved on the valve, which is characterized in that an upper seat of the spring is arranged on the upper end of the valve spring; the upper seat of the spring is fixedly connected with the valve; the lower end of the valve spring is arranged in the cylinder cover through the lower seat cup of the spring; a lever mechanism for controlling the valve action conveniently is connected between the cam and the valve. The lift device for variable valves has the advantages that the purpose of controlling valve action can be reached by adding a lever mechanism, the device is simple in structure and convenient in control, can reduce the pumping loss and the fuel oil consumption of engine.
Description
Technical field
The invention belongs to motor and make field, specifically a kind of variable air valve lift apparatus.
Background technique
Engine valve is all opening and closing under fixing cam drive in most of the cases, and resulting valve event is trading off between the engine valve event time requirement under the high rotating speed of motor and the slow-speed of revolution.In original structure, all exist pump to inhale the shortcoming that loss is big, fuel loss is big.Recently, be used for regulating by the fixing determined advance/retard mechanism of inverted cam axle and put into production, it can strengthen the performance of motor.These devices are equally simple at the cam phase variable device, and their may command cams are with respect to the position, angle of cam drive sprocket wheel and cam lobe switch.
Compare with the naturally aspirated engine of fixedly timing, the motor output facet of these variable cam timing systems in wide engine speed range providing the effect of remarkable enhancing, and the exhaust gas recirculation control valve can replace partial throttling on function the time.On the one hand, they do not possess sufficient valve timing function so that can save engine air throttle.Electro-hydraulic and pneumatic door control system electromagnetism has the potentiality that allow to realize non-air throttle engine really, but, these systems are prototyping system just strictly speaking, also has the difficult problem aspect a large amount of costs, packing and the energy balance to overcome before they are produced.
Summary of the invention
The problem to be solved in the present invention provides a kind of variable air valve lift apparatus of may command valve lift size.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of variable air valve lift apparatus, the cam that comprises the valve that is installed in the cylinder-head port, rotates synchronously with engine crankshaft and be placed in laterostigmatal valve spring, the valve spring upper end is equipped with a spring seat of honour, valve is fixedlyed connected with the spring seat of honour, plate mat is endured in cylinder head by a spring lower seat in the valve spring lower end, also is connected with the leverage of being convenient to control valve event between cam and valve.
As improvement to such scheme, described leverage comprises the upper lever that is positioned at the valve top, the following lever that is positioned at the valve spring below and control male rotor, the upper lever right-hand member is pressed on the valve, last left end directly is connected drive link with following lever left end flexible connection or upper lever left end by one by hinge and is connected with following lever left end, and cam is installed on the upper lever top and contacts with upper lever; Following lever is fixed in the cylinder head by following lever shaft, and following lever right-hand member peaks at a very cup lower end of spring lower seat, and the control male rotor of a may command upper lever or following lever swing amplitude also is installed by upper lever or following lever.Described control male rotor is positioned at lever shaft left bottom or upper right down, cam and upper lever point of contact and upper lever and valve point of contact lateral separation are greater than lever shaft and following lever and spring lower seat are endured a cup point of contact lateral separation down, described lateral separation is vertical with the valve movement direction, and the control male rotor is positioned at lever shaft left bottom down; Perhaps, described control male rotor is positioned at the upper lever below, cam and upper lever point of contact and upper lever and valve point of contact lateral separation are less than following lever shaft and following lever and valve spring point of contact lateral separation, described lateral separation is vertical with the valve movement direction, and the control male rotor is positioned at upper lever axle lower right.
Improve as another kind such scheme, described leverage comprises being positioned at endures glass connection drive block of top and the lever that is positioned at the valve spring next door, connect drive block and be provided with curved surface, the lever upper end contacts with curved surface, lever is fixed in the cylinder head by lever shaft, lever lower end bending peaks at a very cup lower end of spring lower seat, in the lever arranged outside control male rotor of control lever amplitude of fluctuation is arranged, cam be connected drive block and contact; Connect perpendicular distance between transmission fast and lever point of contact and the lever shaft greater than following of lever and the valve spring lateral separation between glass point of contact and the lever shaft very, described perpendicular distance direction is consistent with the valve movement direction, and described lateral separation is vertical with the valve movement direction.
Improve as another kind such scheme, described leverage comprises being positioned at endures glass pressing lever of top and the lever that is positioned at the valve spring next door, the pressing lever upper end is connected with the lever upper end with the hinge form, lever is fixed in the cylinder head by lever shaft, the bending of lever lower end peaks at the valve spring lower end, in the lever arranged outside control male rotor of controlling the lever amplitude of fluctuation is arranged, cam contacts with pressing lever; Perpendicular distance between pressing lever and lever tie point and the lever shaft is greater than lever and following lateral separation of enduring between cup point of contact and the lever shaft of valve spring, described perpendicular distance direction is consistent with the valve movement direction, and described lateral separation is vertical with the valve movement direction.
Improve as another kind such scheme, above-mentioned leverage comprises that being installed on the valve top respectively is connected driving component with the top lever that spring lower seat is endured the cup below with bottom lever and, two levers are fixed in the cylinder head by upper lever axle and following lever shaft respectively, connection driving component both sides up and down is a curved surface, top lever and bottom lever left end respectively be connected the driving component top-surface camber and contact with lower surface camber, top lever right-hand member presses on the valve, bottom lever right-hand member peaks at very cup lower end of spring lower seat, the lateral separation ratio of two ends, the lever left and right sides, top and upper lever axle is less than the lateral separation ratio of two ends, the lever left and right sides, bottom with following lever shaft, and described lateral separation is vertical with the valve movement direction; Cam contacts with being connected the driving component left part, is provided with the control male rotor of a control bottom lever swing amplitude in lever shaft left bottom, bottom.
As another kind to such scheme, described leverage comprises that being installed on the valve top respectively is connected driving component with the top lever that spring lower seat is endured the cup below with bottom lever and, two levers are fixed in the cylinder head by upper lever axle and following lever shaft respectively, connecting the driving component upper end is curved surface, the lower end is connected with bottom lever left end hinge, top lever left end contacts with curved surface, top lever right-hand member presses on the valve, bottom lever right-hand member peaks at very cup lower end of spring lower seat, the lateral separation ratio of two end part, the lever left and right sides, top and upper lever axle is greater than the lateral separation ratio of two end part, the lever left and right sides, bottom with following lever shaft, and described lateral separation is vertical with the valve movement direction; Cam contacts with being connected the driving component left side, is provided with the control male rotor of a control top lever swing amplitude on lever shaft upper left side, top.
The present invention is by setting up a leverage and very cooperating of cup promptly having reached the purpose of controlling the valve lift size by leverage with spring lower seat, and simple in structure, control is convenient, has reduced engine pump and has inhaled loss, has reduced engine fuel consumption.
Description of drawings
Accompanying drawing 1 is the embodiment of the invention one structural representation; Accompanying drawing 2 is the embodiment of the invention two structural representations; Accompanying drawing 3 is the embodiment of the invention three structural representations; Accompanying drawing 4 is the embodiment of the invention four structural representations; Accompanying drawing 5 is present embodiment five structural representations; Accompanying drawing 6 is present embodiment six structural representations; Accompanying drawing 7 is present embodiment seven structural representations; Accompanying drawing 8 is present embodiment eight structural representations.
Embodiment
For the ease of those skilled in the art's understanding, structural principle of the present invention is described in further detail below in conjunction with specific embodiment and accompanying drawing:
The present invention is the improvement to existing variable air valve lift apparatus, and the lift state of may command valve makes the changeable air valve applicability stronger, and application area is wider.
Embodiment one: be the embodiment of the invention one structural representation as shown in Figure 1.Variable air valve lift apparatus in the present embodiment comprises valve 2, valve spring 3 and cam 1, and valve 2 is installed in the cylinder-head port, is used to control the air flue break-make.Cam 1 is positioned at valve 2 tops, is used to drive valve 2 and carries out knee-action.Valve 2 overcoats one valve spring 3, a fixedly connected spring seat of honour 4, valve 2 upper ends, compressible valve spring 3.Have additional very cup 5 of a spring lower seat in valve spring 3 lower ends, spring lower seat very cup 5 is positioned on the cylinder head.
The existing relatively variable air valve lift apparatus improvements of present embodiment are mainly has increased a leverage, under cam 1 normal rotation, this mechanism can with cam 1 the motion on the valve that is passed to 2 shift, valve 2 is moved according to actual needs.The leverage that present embodiment adopted comprises that being positioned at the upper lever of laterally installing valve 2 tops 7 and connects drive link 6, upper lever 7 one ends are pressed on the valve 2, the other end is pressed on and connects drive link 6 upper ends, and cam 1 and contacts with upper lever 7 between upper lever 7 two ends.Connecting drive link 6 vertically installs, and can move up and down, connecting the following lever 8 that drive link 6 lower ends connect a cross setting, following lever 8 is fixed on the cylinder head by lever shaft 9 once, the one end be connected drive link 6 contact, the other end holder is endured cup 5 belows in spring lower seat, following lever shaft 9 relative cam 1 more close valve spring 3, simultaneously, below following lever 8, also be provided with the adjusting parts of lever 8 amplitude of fluctuation under the can regulate, in the present embodiment, these adjusting parts are a control male rotor 10, when needs change down lever 8 amplitude of fluctuation, rotate control male rotor 10, regulate control male rotor 10 peripheries and get final product with following lever 8 spacings.Certainly, these adjusting parts also can be other mechanisms, as oil cylinder plunger etc.
When needs valve 2 moves as amplitude peak with cam 1 rotation, at first will control male rotor 10 rotates to its top edge and contacts with following lever 8, lever 8 can't be swung under the restriction of following lever shaft 9 and control male rotor 10, connection drive link 6 can't be moved down.When cam 1 rotation promotes upper lever 7 actions, upper lever 7 with is connected drive link 6 support ends and also can't moves down, thereby impel upper lever 7 and valve 2 contact jaws to press down, valve spring 3 is compressed, valve 2 moves down, the air flue unlatching.Valve 2 returns back to initial position under the restoring force effect of valve spring 3 afterwards.
When needs are still closed gas gate passageway during in cam 1 normal rotation, rotate control male rotor 10 and makes control male rotor 10 top edges have a determining deviation with play lever 8, at this moment, following lever 8 can following lever shaft 9 be that swing at the center.With leverage as a global analysis, because the Point of Strength that cam 1 puts on power on the upper lever 7 and valve 2 distances are lever shaft 9 and spring lower seat glass 5 distance very down, there is the trend of inclination to the left in upper lever 7 with following lever 8, the power that upper lever 7 is pressed in downwards on the valve 2 upwards withstands on the very power on the cup 5 of spring lower seat less than following lever 8, following lever 8 upwards top spring lower seat is endured cup 5, and the compression valve spring 3 that makes progress, valve 2 nothings move down action, and air flue is in closed condition.Each parts returns back to initial position under the restoring force effect of valve spring 3 afterwards.
According to above-mentioned principle, rotate control male rotor 10, change its top edge and following lever 8 spacings, can play the effect of regulating valve 2 movement ranges, thereby reach the purpose of regulating the valve lift size.
Embodiment two: as shown in Figure 2.Announcement scheme of scheme that present embodiment disclosed and embodiment is similar, in this programme, control male rotor 10 by control down lever 8 change to control upper lever 7 simultaneously, cam 1 contact Point of Strength and upper lever 7 and valve 2 distances and endures glass 5 point of contact distances less than lever shaft 9 down with following lever 8 and spring lower seat with upper lever 7.The position of miscellaneous part and annexation are all consistent with embodiment one.
Opposite with embodiment one, when needs valve 2 moves as amplitude peak with cam 1 rotation, need that at first control male rotor 10 is rotated to its top edge and there is spacing in upper lever 7, when cam 1 rotation promotes upper lever 7 actions, upper lever 7 directly tilts to the right, thereby press down valve 2, air flue is opened.When needs are still closed gas gate passageway during in cam 1 normal rotation, rotating control male rotor 10 makes control male rotor 10 top edges contact with upper lever 7, when cam 1 rotation, because the restriction of control male rotor 10, upper lever 7 and valve 2 contact jaws can't be pressed down, valve 2 attonitys, gas gate passageway are closed condition.
Embodiment three: as shown in Figure 3.Present embodiment is consistent with embodiment two in structure and principle, it is simplification to embodiment two, with 6 cancellations of the connection drive link among the embodiment two, upper lever 7 and following lever 8 directly are movably connected by hinge, pass through the transmission of hinge realizable force between upper lever 7 and the following lever 8.The control of present embodiment, working procedure are consistent with embodiment two, no longer repeat inferior.
Embodiment four: as shown in Figure 4.Present embodiment is consistent with embodiment one in structure and principle, it is simplification to embodiment one, with 6 cancellations of the connection drive link among the embodiment one, upper lever 7 and following lever 8 directly are movably connected by hinge, pass through the transmission of hinge realizable force between upper lever 7 and the following lever 8.The control of present embodiment, working procedure are consistent with embodiment one, no longer repeat inferior.
Embodiment five: as shown in Figure 5.Variable air valve lift apparatus in the present embodiment comprises valve 2, valve spring 3 and cam 1 equally, and valve 2 is installed in the cylinder-head port, is used to control the air flue break-make.Cam 1 is positioned at valve 2 tops, is used to drive valve 2 and carries out knee-action.Valve 2 overcoats one valve spring 3, a fixedly connected spring seat of honour 4, valve 2 upper ends is with on the spring seat of honour 4 and endures cup 11 on one, when valve 2 moves down, compressible valve spring 3.Be provided with very cup 5 of a spring lower seat in valve spring 3 lower ends, spring lower seat very cup 5 is positioned on the cylinder head.
Similar with embodiment one, present embodiment be provided with equally a leverage with cam 1 the motion on the valve that is passed to 2 shift, can regulate valve 2 actions according to actual needs.In the present embodiment, this leverage comprise be positioned at cup 11 upper-end surfaces very directly with last very cup 11 contacts be connected drive block 12, connecting drive block 12 can move relative to going up very glasss 11, the left side is provided with curved surface, the right side directly contacts with cam 1, connects end in contact on drive block 12 curved surfaces and the lever 13.Lever 13 vertically is arranged at valve spring 3 one sides, two ends are respectively to connecting the very cup 5 directions bending of drive block 12 and spring lower seat up and down, and respectively be connected drive block 12 curved surfaces and spring lower seat and very contact cup 5 lower end surfaces, lever shaft 14 and lever 13 be connected drive block 12 point of contact perpendicular distances greater than lever shaft 14 and lever 13 and spring lower seat cup 5 point of contact horizontal equivalents very, also be provided with the control male rotor 15 of restriction lever 13 amplitude of fluctuation in lever 13 sides.
When needs valve 2 moves as amplitude peak with cam 1 rotation, at first will control male rotor 15 rotates to its outer periphery and presses closer in lever 13 sides, lever 13 can't be rotated under the effect that connects drive block 12, because promoting to connect drive block 12 during cam 1 rotation moves to left, connect drive block and press very cup 11 for 12 times, press down valve 2 simultaneously, thereby open air flue.Valve 2 returns back to initial position under the restoring force effect of valve spring 3 afterwards.When needs are still closed gas gate passageway during in cam 1 normal rotation, to control male rotor 15 and rotate to its outer periphery away from lever 13, rotation along with cam 1, cam 1 promotes to connect drive block 12 and is moved to the left, connect drive block 12 simultaneously and promote lever 13 swings, lever 13 lower ends are top spring lower seat cup 5 very upwards then, because lever shaft 14 and lever 13 and is connected drive block 12 point of contact perpendicular distances and endures glass 5 point of contact horizontal equivalents greater than lever shaft 14 and lever 13 and spring lower seat, design suitable connection drive block curvature of curved surface, make lever 13 upwards the top spring lower seat very the power of cup 5 press the very pressure of cup 11 downwards greater than connecting drive block 12, at this moment, upwards compression of valve spring 3, valve 2 nothings move down action, and air flue is in closed condition.Afterwards, lever 13 and connection drive block 12 return back to original state under valve spring 3 restoring force effects.
According to above-mentioned principle, rotate control male rotor 10, change its edge and lever 13 spacings, can play the effect of regulating valve 2 movement ranges, thereby reach the purpose of regulating the valve lift size.
Embodiment six: as shown in Figure 6.The similar that is disclosed among present embodiment and the embodiment five, difference are for to change to the pressing lever 22 that an end is connected with lever hinge with the connection drive block among the embodiment five, and pressing lever 22 the other ends contact with last very cup 11.Whole device working principle and each parts are stressed all to be caused with embodiment May Day, does not repeat them here.
Embodiment seven: as shown in Figure 7.Variable air valve lift apparatus in the present embodiment comprises valve 2, valve spring 3 and cam 1, and valve 2 is installed in the cylinder-head port, is used to control the air flue break-make.Cam 1 is positioned at valve 2 tops, is used to drive valve 2 and carries out knee-action.Valve 2 overcoats one valve spring 3, a fixedly connected spring seat of honour 4, valve 2 upper ends.Be provided with very cup 5 of a spring lower seat in valve spring 3 lower ends, spring lower seat very cup 5 is positioned on the cylinder head.Simultaneously, 4 tops, the spring seat of honour are endured cup 5 lower ends down with spring and are contacted with bottom lever 19 ends with top lever 17 respectively, two levers are fixed in the cylinder head by lever shaft, be provided with one in the gap between the other end and connect driving component 16, and, upper lever axle 18 and upper lever 17 and valve 2 point of contact distance are greater than lever shaft 20 and following lever 19 and spring are endured cup 5 point of contact distances down down, upper lever axle 18 and upper lever 17 be connected driving component 16 point of contact distance less than lever shaft 20 down and following lever 19 be connected driving component 16 point of contact distances, connection driving component 16 outboard ends contact with cam 1.This connection driving component 16 is a curved surface with top lever 17 and bottom lever 19 surface of contact, when cam 1 promotion connection driving component 16 moves to right, by curved surface two lever left end spacings are strengthened, thereby the two lever the other ends are pressed down and last top valve 2 and spring lower seat very glasss 5 respectively.Simultaneously, below bottom lever 19, also be provided with the control male rotor 21 of control bottom lever 19 amplitude of fluctuation.
To describe the present embodiment structural principle below: when needs valve 2 moves as amplitude peak with cam 1 rotation, at first will control male rotor 21 rotates to following lever 19 and contacts, lever can't be swung, when connection driving component 16 moves, promote upper lever 17 swings, upper lever 17 presses down, valve 2 actions, airway open.Afterwards under valve spring 3 restoring force effects upper lever 17 be connected driving component 16 and return back to original state.When needs are still closed gas gate passageway during in cam 1 normal rotation, at first will control male rotor 21 and rotate to the edge away from following lever 19, according to lever principle, following lever 19 upwards the top spring lower seat very the power of cup 5 press down the power of valve 2 greater than upper lever 17, upwards compression of valve spring 3, valve 2 attonitys, air flue is in closed condition all the time.Afterwards, under valve spring 3 restoring force effects, upper lever 17, following lever 19 and be connected driving component 16 and return back to original state.
According to above-mentioned principle, rotate control male rotor 21, change its top edge and bottom lever 19 spacings, can play the effect of regulating valve 2 movement ranges, thereby reach the purpose of regulating the valve lift size.
Embodiment eight: as shown in Figure 8.The scheme that present embodiment disclosed is same and embodiment seven is similar, the main distinction moves to top lever 17 tops for controlling male rotor 21, be used for controlling top lever 17, and, two lever shaft positions are also adjusted to some extent, upper lever axle 18 and upper lever 17 and valve 2 point of contact distance less than lever shaft 20 down and play lever 19 and spring down very cup 5 point of contact apart from, upper lever axle 18 and upper lever 17 be connected driving component 16 point of contact apart from greater than following lever shaft 20 and following lever 19 be connected driving component 16 point of contact distances.Simultaneously, also will connect driving component 16 structures improves.Connecting driving component 16 in this scheme is connecting rod, is that hinge is connected with following lever 19 left ends, with upper lever 17 contact jaws be curved surface.The control mode of whole device and principle all with embodiment five in scheme similar, do not repeat them here.
Above-mentioned eight embodiments only are more preferably embodiment of the present invention; in addition; have under the prerequisite of same idea with the present invention; concrete structure of the present invention also has a lot of mapping modes; as cam position, each lever shaft position and with connected element that is connected lever etc.; need to prove that under the prerequisite that does not break away from the present invention's design, any conspicuous replacement is all within protection domain of the present invention.
Claims (2)
1. variable air valve lift apparatus, the cam (1) that comprises the valve (2) that is installed in the cylinder-head port, rotates synchronously with engine crankshaft and be placed in laterostigmatal valve spring (3), the valve spring upper end is equipped with a spring seat of honour (4), valve is fixedlyed connected with the spring seat of honour, it is characterized in that: the valve spring lower end is endured cup (5) by a spring lower seat and is filled up in cylinder head, between cam and valve, also be connected with the leverage of being convenient to control valve event
Wherein, described leverage comprises the upper lever (7) that is positioned at the valve top, the following lever (8) that is positioned at the valve spring below and control male rotor (10), the upper lever right-hand member is pressed on the valve, last left end directly is connected drive link (6) with following lever left end flexible connection or upper lever left end by one by hinge and is connected with following lever left end, and cam is installed on the upper lever top and contacts with upper lever; Following lever is fixed in the cylinder head by following lever shaft (9), and following lever right-hand member peaks at a very cup lower end of spring lower seat, upper lever or down the lever next door the one may command upper lever or the control male rotor (10) of lever swing amplitude down also are installed;
Or, described leverage comprises connection drive block (12) that is positioned at top, the spring seat of honour and the lever (13) that is positioned at the valve spring next door, connect drive block and be provided with curved surface, the lever upper end contacts with curved surface, lever is fixed in the cylinder head by lever shaft (14), the bending of lever lower end peaks at very cup lower end of spring lower seat, the control male rotor (15) that control lever amplitude of fluctuation is arranged in the lever arranged outside, cam be connected drive block contact, connect transmission fast with the spring seat of honour between also be lined with on one very glass (11); Connect perpendicular distance between transmission fast and lever point of contact and the lever shaft greater than the lateral separation between lever and valve point of contact and the lever shaft, described perpendicular distance direction is consistent with the valve movement direction, and described lateral separation is vertical with the valve movement direction;
Or, described leverage comprises pressing lever (12) that is positioned at top, the spring seat of honour (4) and the lever (13) that is positioned at the valve spring next door, the pressing lever upper end is connected with the lever upper end with the hinge form, lever is fixed in the cylinder head by lever shaft (14), the bending of lever lower end peaks at very cup lower end of spring lower seat, in the lever arranged outside control male rotor (15) of controlling the lever amplitude of fluctuation is arranged, cam contacts with pressing lever, also is lined with between the pressing lever and the spring seat of honour and endures cup (11) on one; Perpendicular distance between pressing lever and lever tie point and the lever shaft is greater than the lateral separation between lever and valve spring point of contact and the lever shaft, and described perpendicular distance direction is consistent with the valve movement direction, and described lateral separation is vertical with the valve movement direction;
Or, described leverage comprises that being installed on the valve top respectively is connected driving component (16) with the top lever (17) that spring lower seat is endured the cup below with bottom lever (19) and, two levers are fixed in the cylinder head by upper lever axle (18) and following lever shaft (20) respectively, connection driving component both sides up and down is a curved surface, top lever and bottom lever left end respectively be connected the driving component top-surface camber and contact with lower surface camber, top lever right-hand member presses on the valve, bottom lever right-hand member peaks at very cup lower end of spring lower seat, the lateral separation ratio of two end part, the lever left and right sides, top and upper lever axle is less than the lateral separation ratio of two end part, the lever left and right sides, bottom with following lever shaft, and described lateral separation is vertical with the valve movement direction; Cam contacts with being connected the driving component left part, is provided with the control male rotor (21) of a control bottom lever swing amplitude in lever shaft left bottom, bottom;
Or, described leverage comprises that being installed on the valve top respectively is connected driving component (16) with the top lever (17) that spring lower seat is endured the cup below with bottom lever (19) and, two levers are fixed in the cylinder head by upper lever axle (18) and following lever shaft (20) respectively, connecting the driving component upper end is curved surface, the lower end is connected with bottom lever left end hinge, top lever left end contacts with curved surface, top lever right-hand member presses on the valve, bottom lever right-hand member peaks at very cup lower end of spring lower seat, the lateral separation ratio of two end part, the lever left and right sides, top and upper lever axle is greater than the lateral separation ratio of two end part, the lever left and right sides, bottom with following lever shaft, and described lateral separation is vertical with the valve movement direction; Cam contacts with being connected the driving component left side, is provided with the control male rotor (21) of a control top lever swing amplitude on lever shaft upper left side, top.
2. variable air valve lift apparatus according to claim 2, it is characterized in that: described control male rotor is positioned at lever shaft left bottom or upper right down, cam and upper lever point of contact and upper lever and valve point of contact lateral separation are greater than lever shaft and following lever and spring lower seat are endured a cup point of contact lateral separation down, described lateral separation is vertical with the valve movement direction, and the control male rotor is positioned at lever shaft left bottom down.3. variable air valve lift apparatus according to claim 2, it is characterized in that: described control male rotor is positioned at the upper lever below, cam and upper lever point of contact and upper lever and valve point of contact lateral separation are less than following lever shaft and following lever and valve spring point of contact lateral separation, described lateral separation is vertical with the valve movement direction, and the control male rotor is positioned at upper lever axle lower right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100260817A CN101225759B (en) | 2008-01-25 | 2008-01-25 | Variable spiracula lifting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100260817A CN101225759B (en) | 2008-01-25 | 2008-01-25 | Variable spiracula lifting device |
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| CN101225759A CN101225759A (en) | 2008-07-23 |
| CN101225759B true CN101225759B (en) | 2010-06-09 |
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| CN2008100260817A Expired - Fee Related CN101225759B (en) | 2008-01-25 | 2008-01-25 | Variable spiracula lifting device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429882B (en) * | 2008-12-12 | 2011-07-13 | 奇瑞汽车股份有限公司 | Continuous variable air valve lift apparatus |
| CN102966395B (en) * | 2012-11-06 | 2014-10-15 | 上海交通大学 | Single-valve height pneumatic control system |
| CN102966404B (en) * | 2012-11-15 | 2014-10-15 | 上海交通大学 | Stretching contact point mobile system |
| CN102966405B (en) * | 2012-11-15 | 2015-03-11 | 上海交通大学 | Stretching valve lift variable device |
| CN102966400B (en) * | 2012-11-29 | 2014-11-19 | 上海交通大学 | System for adjusting height of moving block type tappet rod |
| CN103256089A (en) * | 2013-02-22 | 2013-08-21 | 浙江吉利汽车研究院有限公司杭州分公司 | Variable valve lift mechanism with variable lever ratio |
| CN103437849B (en) * | 2013-08-29 | 2015-10-28 | 刘军 | Valve spring tension-adjusting gear |
| CN108801129B (en) * | 2018-06-29 | 2020-10-30 | 潍柴动力股份有限公司 | Valve lift testing device and valve lift testing method |
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| US6779497B2 (en) * | 2002-05-10 | 2004-08-24 | Hydraulik-Ring Gmbh | Valve stroke control for internal combustion engines of motor vehicles |
| CN1659364A (en) * | 2002-06-20 | 2005-08-24 | 鲁道夫·弗利尔 | A stroke adjusting device for valves of a combustion engine |
| EP1760276A1 (en) * | 2005-09-03 | 2007-03-07 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Valve drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101225759A (en) | 2008-07-23 |
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