CN100427728C - Valve operating device for engine - Google Patents
Valve operating device for engine Download PDFInfo
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- CN100427728C CN100427728C CNB2005800024490A CN200580002449A CN100427728C CN 100427728 C CN100427728 C CN 100427728C CN B2005800024490 A CNB2005800024490 A CN B2005800024490A CN 200580002449 A CN200580002449 A CN 200580002449A CN 100427728 C CN100427728 C CN 100427728C
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Abstract
A valve gear of an engine is constituted so that a rocker arm 63 having a cam abutting part 65 abutting on a valve system cam 69 and interlocked and connected so as to apply valve opening directional force to the engine valve 19 energized in the valve closing direction by a valve spring 24, is rotatably connected with one end part of a first link arm 61 rotatably supported by a fixing position of an engine body and the other end part of a second link arm 62 rotatably supported by a displaceable movable shaft 68a; and the rocker arm 63 is energized in the direction for allowing the cam abutting part 65 to abut on the valve system cam 69 by a rocker arm energizing spring 54 separate from the valve spring 24. This ensures follow-up ability of the opening/closing operations and enables a reduction in the size of the system, while allowing the lift amount of the engine valve to vary continuously. It is also possible to improve the accuracy with which the lift amount is controlled when the engine valve is to be slightly opened.
Description
Technical field
The present invention relates to a kind of valve device of motor, it has the lift amount continually varying lift changeable mechanism that makes as the engine valve of intake valve or exhaust valve.
Background technique
For the lift amount that makes engine valve infinitely changes, such valve device is disclosed in patent documentation 1: at a distolateral valve abutting part that has with the engine valve butt of rocking arm, the chimeric end that push rod (push rod) arranged in the other end of rocking arm is provided with linkage mechanism between the other end of push rod and valve driving cam.
But, in above-mentioned patent documentation 1 disclosed valve device, need between valve driving cam and rocking arm, guarantee to be used to dispose the bigger space of linkage mechanism and push rod, thereby valve device is maximized.And owing to be passed to rocking arm by linkage mechanism and push rod from the driving force of valve driving cam, thus rocking arm with respect to the followability of valve driving cam, be that the on-off action followability of engine valve is undesirable.
Therefore, the applicant has proposed the valve device of such motor in patent documentation 2: an end that is connected with first and second link arms on rocking arm rotationally, the other end rotatably support of first connecting rod arm is in engine main body, and make the other end displacement of second connecting rod arm by driver element, can realize the miniaturization of valve device according to this valve device, and will directly be passed to rocking arm from the power of valve driving cam, and can guarantee good followability with respect to the valve driving cam.
Patent documentation 1: Japanese patent gazette spy opens flat 8-74534 number
Patent documentation 2: Japanese patent gazette spy opens 2004-36560 number
But, in the valve device of such scheme, drive by the time when opening direction to valve; the cam abutting part of rocking arm is by effect and the valve driving cam butt of valve spring to the engine valve of the valve-closing direction application of force by rocking arm; but under the state of engine throttled back; the elastic force of valve spring can not act on rocking arm, and the cam abutting part of rocking arm leaves the valve driving cam, thus the control accuracy reduction of valve lift amount may cause engine valve to be opened slightly the time.
Summary of the invention
The present invention proposes in view of the above problems, its purpose is to provide a kind of valve device of motor, the lift amount of engine valve is changed continuously, and in the followability of guaranteeing the valve on-off action, realize miniaturization, and the control accuracy of valve lift amount can improve engine valve and open slightly the time.
To achieve these goals, the valve device of motor of the present invention, first is characterised in that, comprise: rocking arm, it has the cam abutting part with valve driving cam butt, and this rocking arm is connected in linkage with engine valve, and engine valve is applied the power that valve is opened direction, and described engine valve is by the direction application of force of valve spring quilt to valve-closing; The first connecting rod arm, the one end is connected with this rocking arm rotationally, and its other end rotatably support is in the fixed position of engine main body; The second connecting rod arm, the one end is connected with described rocking arm rotationally, and its other end is by displaceable movable axis rotatably support; Driver element, it is connected with movable axis, and it can make the position change of described movable axis, so that the lift amount of engine valve changes continuously; And the rocking arm force application spring, it is established outside described valve spring in addition, to described rocking arm to the direction application of force that makes described cam abutting part and described valve driving cam butt.
The present invention is on the basis of first feature, second is characterised in that, roller as described cam abutting part, by an end of first connecting rod arm being connected to the coupling shaft of rocking arm, axle is supported on described rocking arm, be arranged at the rotatably mounted camshaft that is provided with described valve driving cam of cam supporting member of described engine main body, on this cam supporting member, be embedded with the fastening pin, with the plane of the orthogonal axe of described movable axis on the projection plane on, described fastening pin is positioned at outside the movable range of second connecting rod arm, one end of described rocking arm force application spring engages with described coupling shaft, and the other end of described rocking arm force application spring engages with described fastening pin.
The present invention is on the basis of first feature, the 3rd is characterised in that, described rocking arm force application spring is the spiral helicine torsion spring that centers on the side in a fixed pivot axis and the described movable axis, the other end of described a fixed pivot axis and described first and second link arms of described movable axis rotatably support.
The present invention is on the basis of the 3rd feature, and the 4th is characterised in that, Control Shaft constitutes crank-like, and comprises: a pair of crankweb that is disposed at second connecting rod arm both sides; The vertical described movable axis that connects between two crankwebs; And fulcrum, it is connected with described crankweb is vertical in the position from this movable axis skew, and rotatably support is on engine main body, on this Control Shaft, be connected with described driver element, a pair of described rocking arm force application spring respectively in the both sides of the other end of described first connecting rod arm around described a fixed pivot axis, dispose a pair of described crankweb in the inboard of a pair of described rocking arm force application spring.
The present invention is on the basis of the 3rd or four features, the 5th is characterised in that, support a pair of supporting convex of described a fixed pivot axis, be arranged at engine main body in mode from the other end of sandwich first connecting rod arm, described rocking arm force application spring, around described two supporting convex and be arranged at engine main body and rocking arm between.
The present invention is on the basis of the 5th feature, the 6th is characterised in that, be provided with fixed bearing cylindraceous portion in the other end of described first connecting rod arm in mode by described a fixed pivot axis rotatably support, when side-looking, the periphery of this fixed bearing portion is configured in the inboard of the periphery of described rocking arm force application spring, axial two end part in described fixed bearing portion, give prominence to along the circumferentially spaced compartment of terrain respectively and be provided with a plurality of protuberances, described a plurality of protuberances are used to stop described rocking arm force application spring to swing to fixed bearing portion side.
The present invention is on the basis of the 6th feature, and the 7th is characterised in that, the actuating range that described protuberance is avoided the second connecting rod arm is configured.
In accordance with a first feature of the invention, can make the stepless variation of lift amount of engine valve by making the stepless displacement of movable axis, and an end of first and second link arms directly is connected rotationally with rocking arm, thereby the miniaturization of valve device is realized in the space that can reduce to dispose two link arms, owing to directly be passed to the cam abutting part of rocking arm from the power of valve driving cam, so can guarantee good followability to the valve driving cam.And; rocking arm by the rocking arm force application spring different with valve spring by to the direction application of force that makes cam abutting part and valve driving cam butt; therefore; even under the state of engine throttled back; the cam abutting part of rocking arm can not leave the valve driving cam yet, the control accuracy of the valve lift amount in the time of can improving engine valve and open slightly.
According to second feature of the present invention, can dispose the rocking arm force application spring in the mode of the interference of effectively avoiding rocking arm force application spring and second connecting rod arm.
According to the 3rd feature of the present invention; the rocking arm force application spring is the spiral helicine torsion spring that centers on the side in a fixed pivot axis and the movable axis; the other end of described a fixed pivot axis and described first and second link arms of described movable axis rotatably support; by disposing this rocking arm force application spring; can reduce the space that is provided with of rocking arm force application spring, realizes the miniaturization of valve device.
According to the 4th feature of the present invention, the Control Shaft of crank-like by drive unit drives around the rotational of fulcrum, constitute the part of described Control Shaft by movable fulcrum, thus, can easily make the movable axis displacement, can make the mechanism simplifying that makes the movable axis displacement by driver element, and, therefore can realize the miniaturization of valve device because Control Shaft is configured near a fixed pivot axis side as far as possible.
According to the 5th feature of the present invention, can come the mobile of the other end of first connecting rod arm limited by a pair of supporting convex, and can feed through under the situation of pitman arm shaft in the influence of avoiding producing by the contraction of rocking arm force application spring, realize the compact arrangement of rocking arm force application spring.
According to the 6th feature of the present invention, swing to the protuberance of fixed bearing portion side by preventing the rocking arm force application spring, the maximization of fixed bearing portion can be avoided, and the supporting rigidity of fixed bearing portion can be improved.
According to the 7th feature of the present invention,, also can guarantee the actuating range of second connecting rod arm fully although protuberance is arranged at fixed bearing portion.
Description of drawings
Fig. 1 is the partial longitudinal section figure of motor, is the sectional view (embodiment 1) along the 1-1 line among Fig. 2.
Fig. 2 is the sectional view along the 2-2 line among Fig. 1.(embodiment 1)
Fig. 3 is the view along the direction of the 3-3 line among Fig. 2.(embodiment 1)
Fig. 4 is the side view of lift changeable mechanism.(embodiment 1)
Fig. 5 is the exploded perspective view of lift changeable mechanism.(embodiment 1)
Fig. 6 is the amplification sectional view along the 6-6 line among Fig. 4.(embodiment 1)
Fig. 7 is the sectional view along the 7-7 line among Fig. 4.(embodiment 1)
Fig. 8 is the view along 8 directions of the arrow among Fig. 3.(embodiment 1)
Fig. 9 A is the Action Specification figure of the lift changeable mechanism under the big valve lift state.(embodiment 1)
Fig. 9 B is the Action Specification figure of the lift changeable mechanism under the little valve lift state.(embodiment 1)
Figure 10 is the figure of expression engine air valve lift curve.(embodiment 1)
Figure 11 is the major component enlarged view of Fig. 3.(embodiment 1)
Figure 12 is the plotted curve that concerns between the corner of expression corner of control arm and sensor arm.
(embodiment 1)
Label declaration
10: engine main body; 19: as the intake valve of engine valve; 24: valve spring; 46: the cam supporting member; 53: supporting convex; 54: the rocking arm force application spring; 55: the fastening pin; 56,57: protuberance; 61: the first connecting rod arm; 61b: fixed bearing portion; 62: the second connecting rod arm; 63: rocking arm; 64: coupling shaft; 65: as the roller of cam abutting part; 67: a fixed pivot axis; 68a: movable axis; 68b: crankweb; 68c: fulcrum; 68: Control Shaft; 69: the valve driving cam; 72: as the actuator motor of driver element; E: motor.
Embodiment
Below, the one embodiment of the present of invention shown in describe embodiments of the present invention with reference to the accompanying drawings.
Fig. 1～Figure 12 represents one embodiment of the present of invention.At first in Fig. 1, the engine main body 10 of the motor E of multi cylinder in upright arrangement has: cylinder block 12, and its inside is provided with cylinder thorax 11; Cylinder head 14, its end face with cylinder block 12 engages; Valve mechanism cover 16, its end face with cylinder head 14 engages, and in each cylinder thorax 11, chimeric slidably have a piston 13, and the firing chamber 15 right with the top surface of each piston 13 is formed between cylinder block 12 and the cylinder head 14.
On cylinder head 14, be provided with the suction port 17 and the relief opening 18 that can be communicated with each firing chamber 15, each suction port 17 is opened and closed respectively by a pair of intake valve 19 as engine valve, and each relief opening 18 is opened and closed respectively by a pair of exhaust valve 20.The push rod 19a of intake valve 19 is entrenched in the conduit 21 of being located at cylinder head 14 slidably, by at spring seat 22 and be connected to the valve spring 24 that is provided with between the spring seat 23 on the cylinder head 14, each intake valve 19 is subjected to the active force to the direction of closing valve, and wherein said spring seat 22 is arranged at the upper end portion of push rod 19a.In addition, the push rod 20a of each exhaust valve 20, be entrenched in slidably in the conduit 25 of being located at cylinder head 14, by at spring seat 26 and be connected to the valve spring 28 that is provided with between the spring seat 27 on the cylinder head 14, each exhaust valve 20 is subjected to the active force to the direction of cutting out valve, wherein, spring seat 26 is arranged at the upper end portion of push rod 20a.
In the lump with reference to Fig. 2, on cylinder head 14, be provided with supporting member 44 integratedly, it has the abutment wall 44a that is configured in each cylinder both sides, engaging on each abutment wall 44a has end cap 45,47, end cap 45,47 collaborative formation intake cam supporting member 46 and exhaust cam supporting members 48.So, on intake cam supporting member 46, rotatably mounted have an admission cam shaft 31, on exhaust cam supporting member 48, rotatably mounted have an exhaust cam shaft 32, intake valve 19 is driven by variable valve lift mechanism 33 by admission cam shaft 31, and exhaust valve 20 is driven by lift-timing changeable mechanism 34 by exhaust cam shaft 32.
Lift-timing the changeable mechanism 34 that drives exhaust valve 20 is known for everyone, and its summary is described herein.Exhaust rocker arm axle 35 is supported by the abutment wall 44a in the exhaust cam supporting member 48, on this exhaust rocker arm axle 35, pivot suspension has the end of a pair of low speed with rocking arm 36,36, and single high speed is used an end of rocking arm 37, two low speed that are arranged on the exhaust cam shaft 32 are bearing in low speed with roller 38,38 butts on the intermediate portion of rocking arm 36,36 with cam 39,39 and axle, and the high speed that is arranged on the exhaust cam shaft 32 is bearing in roller 40 butts of using at a high speed on the intermediate portion of rocking arm 37 with cam 41 and axle.In addition, with the adjusting screw 42 of the upper end butt of the push rod 20a of exhaust valve 20, ground, can regulate advance and retreat position screws the other end at low speed usefulness rocking arm 36,36.
And, two low speed are with rocking arm 36,36 and use rocking arm 37 to control by oil pressure at a high speed, can switch to connect and be connected with removing, when motor E low-speed running, when remove low speed with rocking arm 36,36 with at a high speed with being connected of rocking arm 37 time, then low speed drives with cam 39,39 with the low speed of rocking arm 36,36 by correspondence, and exhaust valve 20 opens and closes with low lift, low angle of release.In addition, when motor E runs up, when low speed is coupled together with rocking arm 37 with rocking arm 36,36 and high speed, drive with cam 41 with the high speed of rocking arm 37 at a high speed by correspondence, by with the low speed usefulness rocking arm 36,36 that engages at a high speed with rocking arm 37, exhaust valve 20 opens and closes with high lift, high angle of release.Like this, by lift-timing changeable mechanism 34, divide the lift and the timing of two-stage control exhaust valve 20.
Next, in the lump with reference to Fig. 3～Fig. 8, and simultaneously the structure of lift changeable mechanism 33 is described, this lift changeable mechanism 33 comprises: rocking arm 63, it has the roller 65 as the cam abutting part, this roller 65 and valve driving cam 69 butts that are arranged on the admission cam shaft 31; First connecting rod arm 61, the one end is connected rotationally with this rocking arm 63, and its other end is rotatably supported on the fixed position of engine main body 10; Second connecting rod arm 62, the one end is connected rotationally with above-mentioned rocking arm 63, and its other end is rotatably supported on the displaceable movable axis 68a.
Be provided with valve joint 63a in an end of rocking arm 63, be combined with to can regulate advance and retreat position adjusting screw 70,70, the upper end butt of the push rod 19a of this adjusting screw 70,70 from top and a pair of intake valve 19 on it.In addition; the other end of rocking arm 63 forms to the unlimited roughly U word shape of the opposition side of intake valve 19; on the other end of rocking arm 63, be provided with: the first support 63b, it is used for an end of first connecting rod arm 61 is pivotally connected to the other end of rocking arm 63; The second support 63c, it is used for an end of second connecting rod arm 62 is pivotally connected to the other end of rocking arm 63, and the second support 63c is configured in the below of the first support 63b.And, be configured to by the roughly first support 63b clamping of U word shape with the valve driving cam 69 of admission cam shaft 31 roller 65 that contacts that rolls, and the coaxial earth's axis of an end joint of roller 65 and first connecting rod arm 61 is bearing on the first support 63b.
In addition, rocking arm 63 forms on the direction of the rotation axis of valve driving cam 69, and the width of above-mentioned valve joint 63a is greater than the width of other parts, and the width of the first and second support 63b, 63c forms identical width.
First connecting rod arm 61 roughly forms U word shape, and it has: a pair of first joint 61a, 61a, from sandwich rocking arm 63; The fixed bearing 61b of portion cylindraceous; A pair of arm 61c, 61c, it connects between two first joint 61a, 61a and the 61b of fixed bearing portion.
The first joint 61a, the 61a of one end of first connecting rod arm 61, by first coupling shaft 64 cylindraceous, be connected rotationally with the first support 63b of the other end of above-mentioned rocking arm 63, first coupling shaft 64 runs through and is fixed in first attachment hole 49 on the first support 63b that is located at rocking arm 63, and above-mentioned roller 65 is bearing on the first support 63b by needle bearing 60 and 64 of first coupling shafts.In addition, among the first support 63b and outer side surfaces above-mentioned admission cam shaft 31 opposed parts, with first connecting rod arm 61 in the first joint 61a, the outer side surface of 61a, the axis that forms with first coupling shaft 64 is the circular-arc of center, and becomes overlapping state when observing from the side.
Be configured in the second connecting rod arm 62 of first connecting rod arm 61 belows, have the second joint 62a in the one end, and have the 62b of movable support portion in its other end, the second joint 62a is configured to by forming the roughly second support 63c clamping of U word shape.The second support 63c is provided with second attachment hole 50, first attachment hole 49 of this second attachment hole 50 and the first support 63b, on-off action direction along above-mentioned two intake valves 19 is that above-below direction is arranged, the second joint 62a is connected with the second support 63c rotationally by running through and being fixed on second coupling shaft 66 in second attachment hole 50.
Promptly; rocking arm 63 has above-mentioned roller 65 with valve driving cam 69 butts at the other end upper lateral part; an end of this rocking arm 63 is connected in linkage with a pair of intake valve 19; the first joint 61a, 61a that the first connecting rod arm 61 of top is had in the one end; and be disposed at the second joint 62a that the second connecting rod arm 62 of first connecting rod arm 61 belows is had in the one end, be connected with the other end of rocking arm 63 side by side and rotatably up and down.
In addition, be provided with a pair of connecting wall 63d integratedly on above-mentioned rocking arm 63, described a pair of connecting wall 63d connection is roughly between the first and second support 63b, the 63c of U word shape.And connecting wall 63d forms: with respect to the tangent tangent line L of outer rim at above-mentioned two intake valve 19 sides and first and second attachment holes 49,50, at least a portion of connecting wall 63d is configured in the opposition side of above-mentioned two intake valves 19, and this connecting wall 63d connects between the first and second support 63b, the 63c.
In addition, be formed with recess 51 on connecting wall 63d, this recess 51 is disposed at such position: the 62b of movable support portion of the other end of second connecting rod arm 62 near the state of rocking arm 63 sides under with the opposed position of movable axis 68a.In addition, on above-mentioned connecting wall 63d, for example be formed with from the weight saving portion 52 that outer side surface caves in to the inside.
The 61b of fixed bearing portion of the other end of first connecting rod arm 61 is rotatably supported on a fixed pivot axis 67, and this a fixed pivot axis 67 is fixedly supported upon on the abutment wall 44a, and this abutment wall 44a constitutes the bottom of the intake cam supporting member 46 that is arranged at engine main body 10.
Pay special attention to Fig. 6, on above-mentioned abutment wall 44a, give prominence to integratedly and be provided with a pair of supporting convex 53,53, described supporting convex 53,53 is from the 61b of fixed bearing portion of axial sandwich first connecting rod arm 61.These supporting convex 53 are provided with: can with the minor diameter axial region 53a of the both ends of the surface sliding contact of said fixing support 61b, and end difference 53b, this end difference 53b surrounds the base end part of minor diameter axial region 53a, and devices spaced apart ground is opposed on the both ends of the surface of the 61b of fixed bearing portion, a fixed pivot axis 67 is fixedly supported upon on the supporting convex 53, and runs through minor diameter axial region 53a coaxially with minor diameter axial region 53a.
In addition, two intake valves 19 apply elastic force by valve spring 24 to the direction of closing valve, when driving by when the direction of closing valve applies two intake valves 19 of elastic force to the direction of opening valve; the roller 65 of rocking arm 63 is by the effect of valve spring 24; with valve driving cam 69 butts by rocking arm 63; but under the closed condition of intake valve 19; elastic force of valve spring 24 does not act on the rocking arm 63; roller 65 leaves valve driving cam 69 thus; when intake valve 19 is opened slightly, has the possibility of the control accuracy reduction of valve lift amount.Therefore, by the rocking arm force application spring 54 different with valve spring 24, to rocking arm 63 to the direction application of force that makes described roller 65 with valve driving cam 69 butts.
Above-mentioned rocking arm force application spring 54 is the spiral helicine torsion springs that center on the side among a fixed pivot axis 67 and the movable axis 68a, a fixed pivot axis 67 and movable axis 68a rotatably support are as first and second link arms 61,61b of fixed bearing portion of the other end of 62 and the 62b of movable support portion, in the present embodiment, above-mentioned rocking arm force application spring 54 is configured to surround said fixing fulcrum 67 by the minor diameter axial region 53a on the above-mentioned supporting convex 53, and above-mentioned rocking arm force application spring 54 is arranged between engine main body 10 and the rocking arm 63, wherein, the above-mentioned supporting convex 53 outstanding abutment wall 44a that are arranged at intake cam supporting member 46.That is, center on an end of the rocking arm force application spring 54 of above-mentioned minor diameter axial region 53a, engage with the fastening pin 55 among the end difference 53b of the above-mentioned supporting convex 53 that is embedded in intake cam supporting member 46; the other end of rocking arm force application spring 54, insert and be fastened in first coupling shaft 64 of the hollow of moving integratedly with rocking arm 63.And, above-mentioned fastening pin 55 is embedded among the end difference 53b of above-mentioned supporting convex 53 by this way: with the plane (plane parallel) of the orthogonal axe of above-mentioned movable axis 68a with the paper of Fig. 4 on projection drawing on, be positioned at outside the movable range of second connecting rod arm 62.
In addition, the 61b of fixed bearing portion of the other end of first connecting rod arm 61 forms cylindric, the periphery of the 61b of fixed bearing portion is configured in the inboard of the periphery that is wound into spiral helicine described rocking arm force application spring 54 when side-looking, axial two end part at the 61b of fixed bearing portion, outstandingly respectively along the circumferentially spaced compartment of terrain be provided with a plurality of for example a pair of protuberances 56,57, described protuberance 56,57 is used to stop rocking arm force application spring 54 to fall to the 61b of fixed bearing portion inclination, and the actuating range that these protuberances 56,57 are avoided second connecting rod arm 62 is configured.
Fixed configurations has the oil ejector 58 as oily feed unit on engine main body 10, first and second coupling shafts 64,66 are with the first joint 61a and the second joint 62a of an end of first and second link arms 61,62, be connected to the other end of rocking arm 63, and first and second coupling shafts 64,66 are configured on the position arranged side by side up and down, the coupling shaft fuel feeding of the top of oil ejector 58 in first and second coupling shafts 64,66.In the present embodiment, first coupling shaft, 64 fuel feeding of the coupling shaft of the conduct top of oil ejector 58 in first and second coupling shafts 64,66, this oil ejector 58 are fixedly mounted on the end cap 45 in the intake cam supporting member 46 that is arranged on the engine main body 10.
In addition, another distolateral top at rocking arm 63, be provided with the first support 63b, this first support 63b forms roughly U word shape, and from sandwich roller 65, the first joint 61a of an end of first connecting rod arm 61, support first coupling shaft 64 of above-mentioned roller 65 by axle, be connected rotationally with the first support 63b, above-mentioned oil ejector 58 is provided on the above-mentioned end cap 45, and towards first joint 61a of first connecting rod arm 61 and the faying surface fuel feeding of the first support 63b.
With reference to Fig. 7, movable axis 68a rotatably support second connecting rod arm 62 is at the 62b of movable support portion that its other end had in the lump, and this movable axis 68a is arranged on the Control Shaft 68.This Control Shaft 68 constitutes crank-like, and has: a pair of crankweb 68b, the 68b that are disposed at second connecting rod arm 62 both sides; The vertical described movable axis 68a that connects between two crankweb 68b, the 68b; And fulcrum 68c, it is in position and vertical connection of described crankweb 68b from this movable axis 68a skew, and rotatably support is in engine main body 10.
Be connected to each other so that constitute jointly on the described abutment wall 44a and end cap 45 of air inlet side cam supporting member 44, be formed with the camshaft supporting convex 45a of portion highlightedly towards rocking arm 63, this camshaft is with being penetrated with admission cam shaft 31 among the 45a of supporting convex portion.
Two crankweb 68b, the 68b of described Control Shaft 68 is disposed at the inboard of a pair of described rocking arm force application spring 54,54, this a pair of described rocking arm force application spring 54,54 respectively in the both sides of the other end of first connecting rod arm 61 around a fixed pivot axis 67, as shown in Figure 5, be rotatably supported in bearing hole 16a along one of the inblock cylinder column direction distolateral described fulcrum 68c, this bearing hole 16a is arranged at the valve mechanism cover 16 of engine main body 10.
Like this, when rocking arm 63 is in lifting position shown in Figure 4, that is intake valve 19 is when being in closed condition, on the axis C of second coupling shaft 66 of the bottom of pivot suspension rocking arm 63, dispose the fulcrum 68c (with reference to Fig. 5) of Control Shaft 68 coaxially, thereby when Control Shaft 68 during around the swing of the axis of fulcrum 68c, movable axis 68a just goes up mobile at the circular arc A (with reference to Fig. 4) that with fulcrum 68c is the center.
The fulcrum 68c of above-mentioned Control Shaft 68, outstanding from the bearing hole 16a of valve mechanism cover 16, be fixed with control arm 71 at the end of this fulcrum 68c, this control arm 71 by on the outer wall that is installed in cylinder head 14, drive as the actuator motor 72 of driver element.That is, on the lead screw shaft 73 by 72 rotations of actuator motor, be engaged with nut part 74, an end that links connecting rod 76 passes through pin 75 pivot suspensions on nut part 74, and this other end that links connecting rod 76 is connected with control arm 71 by pin 77,77.Thereby when making 72 work of actuator motor, nut part 74 moves along the lead screw shaft 73 of rotation, by the control arm 71 that is connected with nut part 74 through binding connecting rod 76, Control Shaft 68 is around fulcrum 68c swing, and is thus, mobile between the position of movable axis 68a in Fig. 9 A and the position among Fig. 9 B.
The outer wall of valve mechanism cover 16 is provided with for example such rotation angle sensor 80 of rotating coder, is fixed with an end of sensor arm 81 at the end of its sensor axis 80a.On control arm 71, be formed with along the guide groove 82 of the linearly extension of its length direction the chimeric slidably coupling shaft 83 that the other end of sensor arm of being arranged at 81 is arranged in this guide groove 82.
Lead screw shaft 73, nut part 74, pin 75 links connecting rod 76, pin 77,77, control arm 71, rotation angle sensor 80, sensor arm 81, and coupling shaft 83, be contained in from the outstanding 14a of wall portion in the side of cylinder head 14 and valve mechanism cover 16, the inboard of 16b, the lid 78 of the 14a of covering wall portion, 16b end face is fixed on the 14a of wall portion, the 16b by bolt 79.
In above-mentioned lift changeable mechanism 33, when make the solid line position of control arm 71 from Fig. 3 when counter clockwise direction is rotated by actuator motor 72, the Control Shaft 68 (with reference to Fig. 5) that is connected with control arm 71 is to counterclockwise rotating, and shown in Fig. 9 A, the movable axis 68a of Control Shaft 68 rises.Under this state, when by valve driving cam 69 press-on roller 65 of admission cam shaft 31, the four joint connecting rods that are connected and fixed fulcrum 67, first coupling shaft 64, second coupling shaft 66 and movable axis 68a produce distortion; rocking arm 63 is swung towards the below to solid line position from the dot and dash line position; adjusting screw 70,70 is pushed the push rod 19a of intake valve 19, thereby opens intake valve 19 with high lift.
When by actuator motor 72, when making control arm 71 turn to solid line position among Fig. 3, the Control Shaft 68 that is connected with control arm 71 rotates to clockwise direction, shown in Fig. 9 B, and the movable axis 68a of Control Shaft 68 decline.Under this state, when by valve driving cam 69 press-on roller 65 of admission cam shaft 31, above-mentioned four joint connecting rods produce distortion, and rocking arm 63 is swung towards the below to solid line position from the dot and dash line position, adjusting screw 70,70 is pushed the push rod 19a of intake valve 19, thereby opens intake valve 19 with low lift.
Figure 10 represents the lifting curve of intake valve 19, and angle of release during with the corresponding high lift of Fig. 9 A and the angle of release during with the corresponding low lift of Fig. 9 B are identical, and have only lift amount to change.Like this, by lift changeable mechanism 33 is set, under the situation of the angle of release that does not change intake valve 19, can at random change lift amount.
In addition, make Control Shaft 68 swing by actuator motor 72, during with the lift of change intake valve 19, must detect the size of lift, that is detect the corner of the fulcrum 68c of Control Shaft 68, and it is fed back in the control of actuator motor 72.For this reason, detect the corner of the fulcrum 68c of Control Shaft 68 with rotation angle sensor 80.If only detect the corner of the fulcrum 68c of Control Shaft 68, then, goes up by rotation angle sensor as long as being directly connected to above-mentioned fulcrum 68c, but because in the zone of hanging down lift, as long as lift amount changes slightly, intake efficiency will great changes will take place, therefore, must detect the corner of the fulcrum 68c of Control Shaft 68 accurately, and it is fed back in the control of actuator motor 72.With respect to this, in the zone of high lift, even some variations take place lift amount, intake efficiency can great changes will take place yet, therefore, to the detection of above-mentioned corner, not exigent precision.
In Figure 11, the position of the control arm of representing with solid line 71 is corresponding to the zone of low lift, from the position of this control arm of swinging in the counterclockwise direction of representing with dot and dash line 71, corresponding to the zone of high lift.Zone in low lift, coupling shaft 83 owing to the sensor arm 81 on the sensor axis 80a that is fixed on rotation angle sensor 80, engage with the end side (away from the side of axis C) of the guide groove 82 of control arm 71, therefore, as long as control arm 71 is swung slightly, sensor arm 81 will produce very big swing.That is the corner of sensor axis 80a is very big with respect to the ratio of the corner of Control Shaft 68, and the resolution of rotation angle sensor 80 improves, thereby can detect the corner of Control Shaft 68 accurately.
On the other hand, swing to the zone of the high lift of the position of representing with dot and dash line at control arm 71, coupling shaft 83 owing to the sensor arm 81 on the sensor axis 80a that is fixed on rotation angle sensor 80, engage with the terminal side (near the side of axis C) of the guide groove 82 of control arm 71, therefore, even control arm 71 produces very big swing, sensor arm 81 is just swing slightly also.That is the corner of sensor axis 80a is little with respect to the ratio of the corner of Control Shaft 68, the testing precision of the corner of Control Shaft 68 step-down during than low lift.
Shown in the plotted curve of Figure 12 like that, as can be known: when the corner of control arm 71 from low lift state when the high lift state increases, owing to the angle increment rate of sensor arm 81 the most at the beginning is very high, therefore testing precision uprises, little by little, above-mentioned increment rate step-down, its testing precision is step-down also.
Like this, even do not use the expensive high rotation angle sensor of testing precision, be fastened on by the sensor arm 81 that makes rotation angle sensor 80 in the guide groove 82 of control arm 71, just can guarantee in the testing precision that needs under the low lift state of high measurement accuracy, and can help to reduce cost.
At this moment, make one distolateral (near the side of fulcrum 68c) and the approaching mutually configuration of one distolateral (near a side of rotation angle sensor 80) of sensor arm 81 of control arm 71, distolateral guide groove 82 that is formed with at control arm 71, therefore, the length of sensor arm 81 can be shortened, miniaturization can be realized.In addition, if a distolateral formation guide groove 82 at control arm 71, then the distance from axis C diminishes, the amount of movement along the circumferential direction of guide groove 82 also diminishes, but because the shorten length of sensor arm 81, therefore, the corner of sensor arm 81 can be fully guaranteed, the testing precision of rotation angle sensor 80 can be guaranteed.
Next, effect to this first embodiment describes, lift changeable mechanism 33 is used to make the lift amount of opening valve of intake valve 19 to change continuously, in this lift changeable mechanism 33, first and second link arms 61,62 have the first and second joint 61a in the one end, 61a, 62a; rocking arm 63 has the valve joint 63a that is connected in linkage with a pair of intake valve 19 in the one end; the first and second joint 61a; 61a; 62a is connected side by side and rotatably with the other end of rocking arm 63; 61b of fixed bearing portion of the other end of first connecting rod arm 61; be rotatably supported on a fixed pivot axis 67 by engine main body 10 supportings; the 62b of movable support portion of the other end of second connecting rod arm 62, support rotationally by displaceable movable axis 68a.
Thereby, by making the stepless displacement of movable axis 68a, can make the stepless variation of lift amount of intake valve 19, and an end of first and second link arms 61,62 directly is connected rotationally with rocking arm 63, can reduce to dispose the space of two link arms 61,62, can realize the miniaturization of valve device, because the power from valve driving cam 69 directly is passed on the roller 65 of rocking arm 63, therefore, can guarantee the good followability with respect to valve driving cam 69.In addition, can with rocking arm 63, first and second link arms 61,62 along the position configuration on the axial direction of admission cam shaft 31 in essentially identical position, thereby can realize that valve device is along the miniaturization on the axial direction of admission cam shaft 31.
And rocking arm 63 has: valve joint 63a is combined with respectively the adjusting screw 70 with a pair of intake valve 19 butts, and can regulates the advance and retreat position of this adjusting screw 70 on it; The first and second support 63b, 63c, they connect an end of first and second link arms 61,62 rotationally, this rocking arm 63 forms and makes along the width of the valve joint 63a on the direction of the rotation axis of valve driving cam 69 width greater than other parts, therefore, can reduce rocking arm 63 as much as possible along the width on the direction of the spin axis of valve driving cam 69, thereby, also just can realize the miniaturization of valve device.In addition since rocking arm 63 that the width of the first and second support 63b, 63c is formed is identical, therefore, both can realize the simplification of the shape of rocking arm 63, can make rocking arm 63 miniaturizations again.
In addition, be arranged at the first support 63b of rocking arm 63, form roughly U word shape, and clip roller 65 from both sides, roller 65 is rotatably supported on the first support 63b, therefore, can constitute rocking arm 63 integral body that comprise roller 65 small-sizedly.And, end at first connecting rod arm 61, be provided with a pair of first joint 61a that clips the first support 63b from both sides, and two first joint 61a are connected with the first support 63b rotationally by first coupling shaft 64, roller 65 is bearing on the first support 63b by 64 of first coupling shafts, therefore, one end of realizing first connecting rod arm 61 by the first common coupling shaft 64 is connected with first the rotating of support 63b, and the axle supporting of above-mentioned roller 65 on the first support 63b, thereby, when realizing that components number reduces, can make the further miniaturization of valve device.
The first and second support 63b at rocking arm 63, on the 63c, on-off action direction along two intake valves 19 is provided with first and second attachment holes 49 side by side, 50, at this first and second attachment hole 49, be penetrated with first and second coupling shafts 64 in 50,66, first and second coupling shafts 64,66 are used for first and second link arms 61, an end of 62 is pivotally connected to the first and second support 63b, on the 63c, connecting wall 63d is arranged to: with respect at two intake valve 19 sides and first and second attachment holes 49, the tangent line L that 50 outer rim is tangent, at least a portion of connecting wall 63d is configured in the opposition side of two intake valves 19, by this connecting wall 63d first and second support 63b, be connected between the 63c, therefore, can improve the first and second support 63b, the rigidity of 63c.
In addition, on connecting wall 63d, be formed with recess 51, recess 51 is at the 62b of movable support portion of the other end of second connecting rod arm 62 under the state near rocking arm 63 sides, opposed with the above-mentioned movable support 62b of portion, can make the 62b of movable support portion of second connecting rod arm 62 be displaced to as much as possible position near rocking arm 63 sides, thereby, both can make the valve device miniaturization, can set the maximum lift of intake valve 19 greatly as much as possible again.
In addition, owing to be formed with weight saving portion 52 on connecting wall 63d, therefore, both can increase rigidity by connecting wall 63d, the weight that can suppress rocking arm 63 again increases.
First and second coupling shafts 64,66 are connected to an end of first and second link arms 61,62 on the rocking arm 63, first coupling shaft, the 64 side fuel feeding of the top of oil ejector 58 in first and second coupling shafts 64,66, and these oil ejector 58 fixed configurations are on engine main body 10, oil after being lubricated between the first connecting rod arm 61 of the top in first and second link arms 61,62 and the rocking arm 63 is flowed to the below, thereby to being lubricated between the second connecting rod arm 62 of below and the rocking arm 63.Thereby, can the joint of rocking arm 63 with first and second link arms 61,62 be lubricated by simple and the few lubricating structure of components number, can guarantee valve actuation smoothly.
And, form the roughly first support 63b of U word shape, clip roller 65 from both sides, and be arranged on the above-mentioned rocking arm 63, the first joint 61a of an end of first connecting rod arm 61, first coupling shaft 64 by axle supporting roller 65, be connected rotationally with the first support 63b, above-mentioned oil ejector 58 is provided on the engine main body 10, and towards the faying surface fuel feeding of the first connecting rod arm 61 and the first support 63b, therefore, can also lubricate the axle support of roller 65.
Because oil ejector 58 is installed on the end cap 45 of intake cam supporting member 46 that mode with rotatably mounted admission cam shaft 31 is arranged at engine main body 10, therefore, can utilize and be used for the oil circuit that is lubricated between admission cam shaft 31 and the intake cam supporting member 46, from the oil that oil ejector 58 is supplied with abundant high pressure and fully measured, wherein above-mentioned admission cam shaft 31 is provided with valve driving cam 69.
In addition, variable lift mechanisms 33 has the Control Shaft 68 of the crank-like of forming, and this Control Shaft 68 constitutes and comprises: a pair of crankweb 68b, the 68b that are disposed at second connecting rod arm 62 both sides; The vertical movable axis 68a that connects between the two crankweb 68b; And fulcrum 68c, it is connected with crankweb 68b is vertical in the position from this movable axis 68a skew, and rotatably support is in engine main body 10, fulcrum 68c rotatably support is in the valve mechanism cover 16 of engine main body 10, therefore, by making the rotational of Control Shaft 68 around fulcrum 68c, then can easily make movable axis 68a displacement, can simplify the mechanism that makes movable axis 68a displacement by actuator motor 72.
In addition, intake valve 19 by valve spring 24 to the direction application of force of closing valve, but rocking arm 63 is by the rocking arm force application spring 54 different with valve spring 24, quilt is to the direction application of force that makes roller 65 with valve driving cam 69 butts, even under intake valve 19 closing state; the roller 65 of rocking arm 63 can not leave valve driving cam 69 yet, the control accuracy of the valve lift amount in the time of can improving intake valve 19 and open slightly.
In addition; rocking arm force application spring 54 is the spiral helicine torsion springs of the side in a fixed pivot axis 67 and the movable axis 68a; the other end of said fixing fulcrum 67 and movable axis 68a rotatably support first and second link arms 61,62; in the present embodiment; rocking arm force application spring 54 is around a fixed pivot axis 67; thus the space that is provided with of rocking arm force application spring 54 can be reduced, can realize the miniaturization of valve device.
On rocking arm 63, be supported with roller 65 by 64 of first coupling shafts, this first coupling shaft 64 is connected to an end of first connecting rod arm 61 on the rocking arm 63, be arranged at the intake cam supporting member 46 rotatably mounted camshafts 31 that are provided with valve driving cam 69 on the described engine main body 10, on the abutment wall 44a of this intake cam supporting member 46, be embedded with fastening pin 55, fastening pin 55 with the plane of the orthogonal axe of movable axis 68a on the projection plane on, be positioned at outside the movable range of second connecting rod arm 62; end of rocking arm force application spring 54 engages with first coupling shaft 64; the other end of rocking arm force application spring 54 engages with fastening pin 55, therefore can dispose rocking arm force application spring 54 effectively to avoid the rocking arm force application spring 54 and the mode of the interference of second connecting rod arm 62.
A pair of described rocking arm force application spring 54 respectively in the both sides of the other end of first connecting rod arm 61 around a fixed pivot axis 67, dispose a pair of described crankweb 68b in the inboard of this a pair of described rocking arm force application spring 54, therefore Control Shaft 68 is configured near a fixed pivot axis 67 sides as far as possible, thereby can realizes the miniaturization of valve device.
And, the a pair of supporting convex 53 of supporting a fixed pivot axis 67,53, be arranged in mode on the abutment wall 44a of intake cam supporting member 46 of engine main body 10 from the other end of sandwich first connecting rod arm 61, and rocking arm force application spring 54 is to center on two supporting convex 53,53 mode is arranged between engine main body 10 and the rocking arm 63, therefore, by a pair of supporting convex 53,53 limit moving of the 61b of fixed bearing portion in the other end of first connecting rod arm 61, and can make rocking arm force application spring 54 be compact configuration, and the influence that can avoid being produced by the contraction of rocking arm force application spring 54 feed through to a fixed pivot axis 67.
The other end at first connecting rod arm 61, be provided with the fixed bearing 61b of portion cylindraceous, when observing from the side, the periphery of the 61b of fixed bearing portion is configured in the inboard of the periphery of rocking arm force application spring 54, the 61b of this fixed bearing portion is by a fixed pivot axis 67 rotatably supports, but axial two end part at the 61b of fixed bearing portion, outstandingly respectively along the circumferentially spaced compartment of terrain be provided with a plurality of protuberances 56,57, described a plurality of protuberances 56,57 are used to stop above-mentioned rocking arm force application spring 54 to fall to the 61b of fixed bearing portion inclination.Thereby, both can suppress the maximization of the 61b of fixed bearing portion, can prevent that again the above-mentioned of rocking arm force application spring 54 from toppling over, can improve the supporting rigidity of the 61b of fixed bearing portion.
And,, therefore,, also can guarantee the actuating range of second connecting rod arm 62 fully although protuberance 56,57 is arranged on the 61b of fixed bearing portion because the actuating range that raised part 56,57 is avoided second connecting rod arm 62 is configured.
More than the embodiment of the invention is illustrated, but the invention is not restricted to the foregoing description, without departing from the scope of the invention, can carry out various design alterations to the present invention.
Claims (7)
1. the valve device of a motor is characterized in that, comprising:
Rocking arm (63), it has the cam abutting part (65) with valve driving cam (69) butt, and this rocking arm (63) is connected in linkage with engine valve (19), engine valve (19) is applied the power that valve is opened direction, and described engine valve (19) is by the direction application of force of valve spring (24) quilt to valve-closing;
First connecting rod arm (61), one end are connected with this rocking arm (63) rotationally, and its other end rotatably support is on the fixed position of engine main body (10);
Second connecting rod arm (62), one end are connected with described rocking arm (63) rotationally, and its other end is by displaceable movable axis (68a) rotatably support;
Driver element (72), it is connected with movable axis (68a), and it can make the position change of described movable axis (68a), so that the lift amount of engine valve (19) changes continuously; And
Rocking arm force application spring (54), it is established outside described valve spring (24) in addition, to described rocking arm (63) to the direction application of force that makes described cam abutting part (65) and described valve driving cam (69) butt.
2. the valve device of motor according to claim 1 is characterized in that,
Roller (65) as described cam abutting part, be connected to the coupling shaft (64) of rocking arm (63) by a end with first connecting rod arm (61), axle is supported on described rocking arm (63), be arranged at the rotatably mounted camshaft (31) that is provided with described valve driving cam (69) of cam supporting member (46) of described engine main body (10), on this cam supporting member (46), be embedded with fastening pin (55), with the plane of the orthogonal axe of described movable axis (68a) on the projection plane on, described fastening pin (55) is positioned at outside the movable range of second connecting rod arm (62), one end of described rocking arm force application spring (54) engages with described coupling shaft (64), and the other end of described rocking arm force application spring (54) engages with described fastening pin (55).
3. the valve device of motor according to claim 1 is characterized in that,
Described rocking arm force application spring (54) is the spiral helicine torsion spring that centers on the side in a fixed pivot axis (67) and the described movable axis (68a), the other end of described a fixed pivot axis (67) and described first and second link arms of described movable axis (68a) rotatably support (61,62).
4. the valve device of motor according to claim 3 is characterized in that,
Control Shaft (68) constitutes crank-like, and comprises: a pair of crankweb (68b) that is disposed at second connecting rod arm (62) both sides; The vertical described movable axis (68a) that connects between two crankwebs (68b); And fulcrum (68c), it is in position and vertical connection of described crankweb (68b) from this movable axis (68a) skew, and rotatably support is on engine main body (10), on this Control Shaft (68), be connected with described driver element (72), a pair of described rocking arm force application spring (54) centers on described a fixed pivot axis (67) in the both sides, the other end of described first connecting rod arm (61) respectively, disposes a pair of described crankweb (68b) in the inboard of a pair of described rocking arm force application spring (54).
5. according to the valve device of claim 3 or 4 described motors, it is characterized in that,
Support a pair of supporting convex (53) of described a fixed pivot axis (67), be arranged at engine main body (10) in mode from the other end of sandwich first connecting rod arm (61), described rocking arm force application spring (54) around described two supporting convex (53) and be arranged at engine main body (10) and rocking arm (63) between.
6. the valve device of motor according to claim 5 is characterized in that,
The other end at described first connecting rod arm (61), be provided with fixed bearing portion cylindraceous (61b) in mode by described a fixed pivot axis (67) rotatably support, when side-looking, the periphery of this fixed bearing portion (61b) is configured in the inboard of the periphery of described rocking arm force application spring (54), axial two end part in described fixed bearing portion (61b), give prominence to along the circumferentially spaced compartment of terrain respectively and be provided with a plurality of protuberances (56,57), described a plurality of protuberances (56,57) are used to stop described rocking arm force application spring (54) to swing to fixed bearing portion (61b) side.
7. the valve device of motor according to claim 6 is characterized in that, the actuating range that described protuberance (56,57) is avoided second connecting rod arm (61) is provided with.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP009394/2004 | 2004-01-16 | ||
| JP2004009394 | 2004-01-16 | ||
| JP350753/2004 | 2004-12-03 |
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| CN100427728C true CN100427728C (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005800024490A Expired - Fee Related CN100427728C (en) | 2004-01-16 | 2005-01-13 | Valve operating device for engine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102011005575A1 (en) * | 2011-03-15 | 2012-09-20 | Schaeffler Technologies Gmbh & Co. Kg | Valve gear with additional lift in the cam base circle |
| CN104420925B (en) * | 2013-08-29 | 2017-03-01 | 摩托尼科株式会社 | The continuous variable valve lift apparatus of electromotor |
| CN103775159B (en) * | 2014-01-23 | 2017-02-01 | 长城汽车股份有限公司 | Air distribution mechanism for engine and vehicle with same |
| CN105443183B (en) * | 2015-12-04 | 2018-09-11 | 江门市大长江集团有限公司 | A kind of valve rocker component of motorcycle engine |
| GB201710962D0 (en) * | 2017-07-07 | 2017-08-23 | Eaton Srl | Rocker arm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62185809U (en) * | 1986-05-16 | 1987-11-26 | ||
| US5111781A (en) * | 1990-03-14 | 1992-05-12 | Suzuki Kabushiki Kaisha | Valve actuating mechanism in four-stroke cycle engine |
| JPH05202720A (en) * | 1992-01-30 | 1993-08-10 | Honda Motor Co Ltd | Valve driving device for internal combustion engine |
| CN1203309A (en) * | 1997-06-24 | 1998-12-30 | 本田技研工业株式会社 | Valve operating system in internal combustion engine |
| WO2003008772A1 (en) * | 2001-07-17 | 2003-01-30 | Thyssenkrupp Automotive Ag | Variable valve-stroke controller |
-
2005
- 2005-01-13 CN CNB2005800024490A patent/CN100427728C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62185809U (en) * | 1986-05-16 | 1987-11-26 | ||
| US5111781A (en) * | 1990-03-14 | 1992-05-12 | Suzuki Kabushiki Kaisha | Valve actuating mechanism in four-stroke cycle engine |
| JPH05202720A (en) * | 1992-01-30 | 1993-08-10 | Honda Motor Co Ltd | Valve driving device for internal combustion engine |
| CN1203309A (en) * | 1997-06-24 | 1998-12-30 | 本田技研工业株式会社 | Valve operating system in internal combustion engine |
| WO2003008772A1 (en) * | 2001-07-17 | 2003-01-30 | Thyssenkrupp Automotive Ag | Variable valve-stroke controller |
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