CN103147818A - Drive device with variable valve lift, engine and vehicle - Google Patents
Drive device with variable valve lift, engine and vehicle Download PDFInfo
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- CN103147818A CN103147818A CN2013100652354A CN201310065235A CN103147818A CN 103147818 A CN103147818 A CN 103147818A CN 2013100652354 A CN2013100652354 A CN 2013100652354A CN 201310065235 A CN201310065235 A CN 201310065235A CN 103147818 A CN103147818 A CN 103147818A
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Abstract
The invention discloses a drive device with variable valve lift. The drive device comprises a valve mechanism, a tappet mechanism arranged at the top of the valve mechanism, a cam shaft mechanism arranged above the valve mechanism and provided with a cam, a rocker arm mechanism arranged between the tappet mechanism and the cam shaft mechanism and driven by the cam to swing around the rocker arm rotation axis of the rocker arm mechanism, and an actuating mechanism used for driving the rocker arm mechanism to rotate around the adjusting rotation axis of the actuating mechanism to continuously and variably adjust the lift of the valve mechanism. According to the drive device with the variable valve lift, the gas distribution requirements of an engine under various working conditions such as high-speed high-load working condition, low-speed low-load working condition and the like can be satisfactorily met, the pumping loss is reduced, the valve lift is continuous and variable at the same time, the power performance and the fuel economy of the engine are greatly improved, and the discharge amount of harmful gases such as HC, CO, CO2, NOx and the like is reduced.
Description
Technical field
The present invention relates to the automobile construction field, especially relate to a kind of variable valve lift driving device for motor, and comprise its motor and comprise the vehicle of this motor.
Background technique
Along with environmental problem and more and more sternness of energy problem, internal-combustion engine stands in the breach as main " Consumer " of the world oil energy and receives special concern, internal-combustion engine is the dynamic power machine that the present whole world is most widely used, irreplaceable in short time, so internal-combustion engine is more and more cleaned, and Economy is become better and better, and is the target that lays siege to of the whole world each large automobile vendor in recent years.
Conventional gasoline engin makes different power and the moments of torsion of motor output by the size that changes the throttle adjustment air inflow, under small load condition, throttle opening is very little, air input of engine by air is smaller, can produce very large vacuum after closure, said pumping loss that Here it is, pumping loss is very large on the impact of low engine speed.
And the port timing of conventional engines generally based on a certain fixedly condition range, is determined by the local optimum of engine performance, immobilizes in the course of the work, and just one open-one close moves in circles, and the valve motion rule is determined by cam profile fully.
Although, the motor that some adopt the lift range variable technology has also appearred in prior art, and these lift range variable complex structures are controlled loaded down with trivial detailsly, and and great majority are two-part, can not realize the continuous variable of valve lift, and practicability is relatively poor.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in prior art.For this reason, one object of the present invention is to propose a kind of variable valve lift driving device for motor, and this variable valve lift driving device is simple in structure, reliable and stable, can realize the lift of continuous variable ground adjusting valve mechanism.
According to the variable valve lift driving device for motor of the present invention, comprising: valve mechanism; Tappet mechanism, described tappet mechanism is located at the top of described valve mechanism; Camshaft mechanism, described camshaft mechanism is located at the top of described valve mechanism, and described camshaft mechanism has cam; Rocker arm body, described rocker arm body are located between described tappet mechanism and described camshaft mechanism and by the rocking arm spin axis of the described rocker arm body of described actuated by cams around described rocker arm body and swing; And actuating mechanism, described actuating mechanism is used for driving described rocker arm body around the adjustment spin axis rotation of described actuating mechanism, with the lift of the described valve mechanism of continuous variable ground adjusting.
According to the variable valve lift driving device for motor of the present invention, solved well motor in the requirement to distribution of high speed high load working condition and low speed small load condition, reduce pumping loss, also realized simultaneously the continuous variable of valve lift, greatly improve the power performance and the economy performance of motor, reduced HC, CO, CO
2, the harmful gas such as NOx discharging.
In addition, according to the variable valve lift driving device for motor of the present invention, can also have following additional technical feature:
According to one embodiment of present invention, described rocker arm body forms such profile, and described profile coordinates with described tappet mechanism and described profile is configured to be suitable for obtaining required valve lift, describedly does straight reciprocating motion be used to driving described tappet mechanism.
According to one embodiment of present invention, described rocker arm body comprises:
Framework, wherein said profile are formed on described framework; And
Rocking arm roller, described rocking arm roller rotatably are located on the part corresponding with described camshaft mechanism of described framework.
According to one embodiment of present invention, described profile comprises first paragraph curved surface, second segment curved surface and the 3rd section curved surface,
Wherein said second segment curved surface is connected between described first paragraph curved surface and described the 3rd section curved surface, and described first paragraph curved surface compares described the 3rd section more close described camshaft mechanism of curved surface,
Described first paragraph curved surface is arc-shaped surface, and described rocking arm spin axis and the corresponding central axes of described first paragraph curved surface,
The distance of described second segment curved surface and the 3rd section curved surface and described rocking arm spin axis, along increasing gradually from the direction of described first paragraph curved surface towards described the 3rd section curved surface.
According to one embodiment of present invention, described second segment curved surface respectively with described first paragraph curved surface and the 3rd section curved surface rounding off.
According to one embodiment of present invention, described framework is respectively arranged with the reinforcement structure on two relative lateral side surfaces.
According to one embodiment of present invention, the top structure of described tappet mechanism has pivotable tappet roller, contact to roll with described rocker arm body, and in the situation that described valve mechanism lift is zero, the central axis of described tappet roller overlaps with described adjustment spin axis.
According to one embodiment of present invention, described tappet mechanism comprises:
Assembly department limits installing space in described assembly department, and the top of described installing space and bottom are all opened wide, and are formed with assembly department oil input channel and assembly department oil road in described assembly department;
Plunger, described plunger is located in described installing space and the top of described valve mechanism is stretched out to be suitable for only being against in the bottom of described plunger from the bottom of described installing space along the straight reciprocating motion direction of described valve mechanism movably, has the plunger cavity that the top is opened wide in described plunger, and be formed with plunger oil input channel and plunger oil road in described plunger, described plunger oil input channel is communicated with described plunger cavity and described assembly department oil input channel respectively, and described plunger oil road is communicated with described plunger cavity and described assembly department oil road respectively;
Sealing, described Sealing are arranged on described assembly department and seal the top of described installing space, end face interval first intended distance of the bottom surface of described Sealing and described plunger;
Elastic component, described elastic component are located in described plunger cavity, and the two ends of described elastic component flexibly only are against respectively between the bottom surface of the bottom surface of described plunger cavity and described Sealing; And
The tappet roller, described tappet roller is located at the top of described assembly department pivotly.
According to one embodiment of present invention, also comprise two fixedly boards, described two fixedly board is parallel and relatively be arranged on the top of described assembly department, and described tappet roller is folded in described two fixedly between board pivotly.
According to one embodiment of present invention, further comprise two banking stops, described two banking stops are located at respectively two transverse sides of described tappet roller and described two fixedly between board.
According to one embodiment of present invention, described banking stop is configured to annular substantially, and the radial dimension of described banking stop is greater than the radial dimension of described tappet roller.
According to one embodiment of present invention, also comprise positive stop lug boss, described positive stop lug boss is located in described installing space and the outer circumferential face of contiguous described plunger,
The outer circumferential face of described plunger be provided with flange and when described plunger moves down the second intended distance in described installing space the bottom surface of described flange only be against on the end face of described positive stop lug boss.
According to one embodiment of present invention, described actuator comprises:
Active part, described active part comprise driving shaft and the driving gear that is set on described driving shaft; And
Secondary part, described secondary part comprises driven shaft and pivotal axis, described driven shaft be connected with described pivotal axis and described driving shaft, described driven shaft and described pivotal axis in any two parallel to each other, described driven shaft is rotatably mounted on the cylinder cap of motor, and described driven shaft is provided with the driven gear with described driving gear engagement, wherein
The central axis of described driven shaft overlaps with described adjustment spin axis, and described pivotal axis is suitable for being connected with described rocker arm body and the central axis of described pivotal axis overlaps with described rocking arm spin axis.
According to one embodiment of present invention, the two ends of described driven shaft are arranged with respectively the driven shaft bearing, and described driven shaft bearing is suitable for being fixed on described cylinder cap.
According to one embodiment of present invention, be formed with oil storage hole in described driven shaft bearing,
Be provided with the driven shaft oil duct on described driven shaft, described driven shaft oil duct is communicated with when described driven shaft rotates separably with described oil storage hole.
According to one embodiment of present invention, described driven gear is tooth sector substantially.
According to one embodiment of present invention, described pivotal axis comprises each interval and two sections of being connected with described driven shaft respectively.
According to one embodiment of present invention, also comprise return spring, described return spring is set on described pivotal axis, and an end of described return spring is buckled on described rocker arm body, flexibly described rocker arm body only is against on described camshaft mechanism.
According to one embodiment of present invention, described actuator comprises:
Housing, the inner peripheral surface of described housing are provided with a plurality of spaced housing boss, and described housing boss radially extends towards the center of described housing; And
Rotor, described rotor are located in described housing rotationally and the central axis of described rotor overlaps with described adjustment spin axis, are provided with a plurality of rotor boss on the outer circumferential face of described rotor, wherein
Space between two described housing boss of arbitrary neighborhood is defined as and is isolated from each other and airtight the first oil pocket and the second oil pocket by being arranged on therebetween described rotor boss, and wherein the first oil pocket is positioned at the downstream side of the second oil pocket in the clockwise direction,
Described rotor is limited with the first oil duct and the second oil duct, and an end of described the first oil duct is connected with described the first oil pocket and an end of described the second oil duct is connected with described the second oil pocket;
Eccentric shaft, an end of described eccentric shaft is fixed on described rotor and the other end extends outward in described housing, and the central axis of described eccentric shaft overlaps with described rocking arm spin axis and is parallel to described adjustment spin axis.
According to one embodiment of present invention, be provided with elastic piece structure on the described adjustment spin axis of the distance of each a described rotor boss side surface far away, the inner peripheral surface of described elastic piece structure and described housing closely cooperates.
According to one embodiment of present invention, described eccentric shaft rotates in predetermined angular range.
According to one embodiment of present invention, described housing comprises shell and end cap, one side of described shell opens wide to form shell aperture, described end cap is arranged on described shell and seals described shell aperture, be formed with one section on described shell around the circular arc restraining groove of described adjustment spin axis, the described the other end of wherein said eccentric shaft passes described circular arc restraining groove and extends outward.
According to one embodiment of present invention, also comprise: positioning component, described positioning component are located on one of them described rotor boss, are used for when assembling, described end cap and described rotor being positioned.
According to one embodiment of present invention, described positioning component comprises:
Stop collar, described stop collar are embedded in the receiving bore that is formed on described rotor boss;
Stop screw, described stop screw wears by described stop collar and an end and only is against in spacing hole on described end cap internal surface, be formed with the hydraulic oil steering channel on the described internal surface of wherein said end cap, described hydraulic oil steering channel respectively with described the first and second oil pockets in one and described spacing hole be connected; And
Spacing elastic component, described spacing elastic component is located in described stop collar, and described spacing elastic component is arranged between the bottom surface of the other end of described stop screw and described receiving bore by elasticity.
According to one embodiment of present invention, also comprise: connecting valve, described the first and second oil ducts all are connected with the oil pump of motor by described connecting valve.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming embodiment's description in conjunction with following accompanying drawing, wherein:
Fig. 1 is the stereogram of variable valve lift driving device according to an embodiment of the invention;
Fig. 2 is the plan view of variable valve lift driving device according to an embodiment of the invention;
Fig. 3 is the side view of variable valve lift driving device according to an embodiment of the invention;
Fig. 4 is the schematic diagram of rocker arm body according to an embodiment of the invention;
Fig. 5 is the schematic diagram after rocker arm body and tappet mechanism assembling according to an embodiment of the invention;
Fig. 6 is the explosive view of tappet mechanism according to an embodiment of the invention;
Fig. 7 is the sectional view after tappet mechanism and valve mechanism assembling according to an embodiment of the invention;
Fig. 8 is the enlarged view that Fig. 7 centre circle shows A section;
Fig. 9 is the stereogram of prop column structure according to an embodiment of the invention;
Figure 10 is the schematic diagram of tappet roller according to an embodiment of the invention;
Figure 11 is the stereogram of actuating mechanism according to an embodiment of the invention;
Figure 12 is the stereogram with variable valve lift driving device of the actuating mechanism shown in Figure 11;
Figure 13 is the stereogram of the secondary part of actuating mechanism according to an embodiment of the invention;
Figure 14 is the schematic diagram after the secondary part shown in Figure 13 and rocker arm body, tappet mechanism, valve mechanism and camshaft mechanism assembling;
Figure 15 is the explosive view of actuating mechanism in accordance with another embodiment of the present invention;
Figure 16 is the stereogram of the actuating mechanism shown in Figure 15;
Figure 17 is the schematic diagram after the actuating mechanism assembling shown in Figure 15;
Figure 18 is the plan view of the actuating mechanism shown in Figure 15;
Figure 19 is the schematic diagram of the shell of the actuating mechanism shown in Figure 15;
Figure 20 is the side view of the shell shown in Figure 19;
Figure 21 is the rear view of the shell shown in Figure 19;
Figure 22-Figure 23 is the schematic diagram that tappet mechanism coordinates with the zero lift profile of rocker arm body;
Figure 24-Figure 25 is the schematic diagram that tappet mechanism coordinates with the little lift profile of rocker arm body;
Figure 26-Figure 27 is the schematic diagram that tappet mechanism coordinates with the high-lift profile of rocker arm body.
Embodiment
The below describes embodiments of the invention in detail, and described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explanation the present invention, and can not be interpreted as limitation of the present invention.
in description of the invention, it will be appreciated that, term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is separately arranged.
In the present invention, unless clear and definite regulation and restriction are separately arranged, broad understanding should be done in the terms such as term " installation ", " being connected ", " connection ", " fixing ", for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless clear and definite regulation and restriction are separately arranged, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, can comprise that also the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that the First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that the First Characteristic level height is less than Second Characteristic.
The engine body group is the support of motor, is the matrix of connecting rod, distribution device and the assembling of each system.The body group mainly is comprised of cylinder block, cylinder cap, cylinder head gasket and oil sump etc., oil sump generally is located at the bottom of cylinder block, cylinder cap is located at the top of cylinder block, and cylinder head gasket is located between the bottom surface of the end face of cylinder block and cylinder cap, is used for the gap between sealing both.
Cylinder cap forms the firing chamber together with piston head and cylinder, the top of firing chamber has suction port and relief opening, and valve mechanism is located in cylinder cap and sealing suction port and relief opening.For existing general motor, adopt two valve mechanisms that advance scene 2 more, minority also has the valve mechanism that adopts one-in-and-one-out or three to advance scene 2.
For same motor, generally all has multiple different operating mode, such as low speed small load condition, high speed high load working condition etc., when motor is under the low speed small load condition, the power of motor and the output of moment of torsion are relatively low, and the air that therefore enters in the firing chamber can be relatively less, and be under the high speed high load working condition at motor, the power of motor is relative with the output of moment of torsion higher, therefore needs more air to enter in the firing chamber and more oil inflame.
Variable valve lift driving device 1000 of the present invention can be realized the particularly continuous variable of intake valve lift of valve lift, thereby can different operating modes residing according to motor come intelligent adjusting valve lift, guarantee that air and fuel oil in the firing chamber fully burn, and improve power performance and the fuel economy of motor.
Below with reference to the variable valve lift driving device 1000 that be used for motor of Fig. 1-Figure 27 detailed description according to the embodiment of the present invention.
Variable valve lift driving device, comprise valve mechanism 600, tappet mechanism 200, camshaft mechanism 500, rocker arm body 100 and actuating mechanism 300,400 according to an embodiment of the invention.
Wherein, valve mechanism 600 has been prior art, and known by those skilled in the art, for example valve mechanism 600 can comprise the gentle door of valve head bar section, valve mechanism 600 can move up and down to open or close along the center line of valve mechanism 600 suction port or the relief opening of firing chamber in valve guide bushing, can adopt the part of identical setting with prior art for these, be not described in detail here.
With reference to Fig. 6-Figure 10, tappet mechanism 200 is located at the top of valve mechanism 600, makes up and down reciprocatingly straight line motion to drive valve mechanism 600 along the center line of valve mechanism 600.
With reference to Fig. 1-shown in Figure 3, camshaft mechanism 500 is located at the top of valve mechanism 600, and camshaft mechanism 500 comprises camshaft 503 and is set in the cam 505 of camshaft 503 outsides.Camshaft mechanism 500 can be by the crank-driven of motor, and camshaft mechanism 500 can adopt gear transmission, chain transmission or band transmission with bent axle.
As shown in Figure 4 and Figure 5, rocker arm body 100 is located between tappet mechanism 200 and camshaft mechanism 500 and by cam 505 and drives rocker arm body 100 around the rocking arm spin axis swing (being the central axis of eccentric shaft 451 and pivotal axis 357) of rocker arm body 100.
As Figure 11-shown in Figure 21, actuating mechanism 300,400 is used for driving rocker arm body 100 and rotates around actuating mechanism 300,400 adjustment spin axis (being the central axis of rotor 421 and driven shaft 353), with the lift of continuous variable ground adjusting valve mechanism 600.
Need to prove in description of the invention, as there is no specified otherwise, take valve mechanism 600 as example as intake valve.Certainly, be understandable that, this valve mechanism 600 also can be exhaust valve, i.e. this variable valve lift driving device 1000 lift of also can be used for regulating exhaust valve.
Variable valve lift driving device 1000 according to the embodiment of the present invention, solved well motor in the requirement to distribution of high speed high load working condition and low speed small load condition, reduce pumping loss, also realized simultaneously the continuous variable of valve lift, greatly improve the power performance and the economy performance of motor, reduced HC, CO, CO
2, the harmful gas such as NOx discharging.
The below is with reference to the rocker arm body 100 of Fig. 1-Figure 21 detailed description according to the embodiment of the present invention.
As shown in Figure 4, rocker arm body 100 comprises framework 101 and rocking arm roller 111 according to an embodiment of the invention.Wherein, with reference to Fig. 4, framework 101 is configured with such profile 103, and profile 103 is suitable for coordinating with tappet mechanism 200, and for example profile 103 contacts cooperation (as shown in Figure 9) with the tappet roller 209 at tappet mechanism 200 tops.
As shown in Figure 4, rocking arm roller 111 rotatably is located on the part corresponding with camshaft mechanism 500 of framework 101.For example in the example of Fig. 4; rocking arm roller 111 rotatably is located on the top section of framework 101; rocking arm roller 111 can be located at by the pin 112 that runs through framework 101 on framework 101 rotationally; the pin hole on pin 112 and framework 101 can adopt the fit system of interference; can be provided with bearing between pin 112 and rocking arm roller 111, be used for reducing both relatively rotating the friction of process.
And rocker arm body 100 has the rocking arm roller 111 that coordinates with camshaft mechanism 500, and the friction in the time of can greatly reducing both to move improves working life, reduces user cost and operating noise.
According to one embodiment of present invention, with reference to shown in Figure 4, profile 103 comprises first paragraph curved surface 105, second segment curved surface 107 and the 3rd section curved surface 109, wherein second segment curved surface 107 is connected between first paragraph curved surface 105 and the 3rd section curved surface 109, and first paragraph curved surface 105 is compared the 3rd section more close camshaft mechanism 500 of curved surface 109.
For example, as shown in Figure 4, first paragraph curved surface 105 can be formed on the rear side of framework 101 bottoms, and the 3rd section curved surface 109 can be formed on the front side of framework 101 bottoms, and second segment curved surface 107 is connected between first paragraph curved surface 105 and the 3rd section curved surface 109.
According to one embodiment of present invention, first paragraph curved surface 105 is arc-shaped surface, and rocking arm spin axis and the corresponding central axes of first paragraph curved surface 105.In other words, the lift of valve mechanism 600 is zero when first paragraph curved surface 105 coordinates with tappet mechanism 200, i.e. the suction port of valve mechanism 600 closed chamber.Be understandable that, this first paragraph curved surface 105 can be regarded as the zero lift profile.Thus, realized the intelligent cylinder deactivation purpose of motor.
According to one embodiment of present invention, second segment curved surface 107 and the 3rd section curved surface 109 are with the distance of rocking arm spin axis, along increasing gradually from the direction of first paragraph curved surface 105 towards the 3rd section curved surface 109.In other words, when second segment curved surface 107 coordinates with tappet mechanism 200 lift of valve mechanism 600 less than, the lift of valve mechanism 600 when the 3rd section curved surface 109 coordinates with tappet mechanism 200.That is, this second segment curved surface 107 can be regarded as little lift curved surface, and the 3rd section curved surface 109 can be regarded as the high-lift curved surface.
Thus, when second segment curved surface 107 drove tappet mechanism 200, the lift amount of valve mechanism 600 was less, can be suitable for the low engine speed small load condition, was under the high speed high load working condition and work as motor, can drive tappet mechanisms 200 by the 3rd section curved surface 109.
For example, can be by the different operating modes of ECU according to motor, control the profile part that rocker arm body 100 coordinates with tappet mechanism 200, thereby valve lift is in best scope, guarantee that motor can obtain enough and suitable air inflow, and fully burn with fuel oil, improve power and the fuel economy of motor.
In one embodiment of the invention, second segment curved surface 107 respectively with first paragraph curved surface 105 and the 3rd section curved surface 109 rounding ofves.For example, can pass through one section arc-shaped surface transition between second segment curved surface 107 and first paragraph curved surface 105, the central axis of this arc-shaped surface can overlap with the rocking arm spin axis of rocker arm body 100.Similarly, also can be excessive by arc-shaped surface between second segment curved surface 107 and the 3rd section curved surface 109, certainly also can be excessive by other curved surface.
As shown in Figure 4, framework 101 is respectively arranged with on two relative lateral side surfaces strengthens structure 113, in other words, is provided with on two surfaces of framework 101 thickness directions and strengthens structure 113.
For example, strengthen the stiffening rib that structure 113 can be configured to indent.Strengthen structure 113 as the stiffening rib of concave by arranging, can greatly improve rigidity and the intensity of framework 101, particularly particularly remarkable to the lifting of framework 101 edge section Rigidity and strengths, in the time of can preventing like this rocker arm body 100 work, framework 101 edges fracture, improve the bulk life time of rocker arm body 100, reduced user cost.
Further, the stiffening rib of this concave can be close to the edge setting of framework 101, in order to improve better rigidity and the intensity of framework 101 edges.
The stiffening rib of this concave can be formed on respectively on corresponding lateral side surfaces, and the stiffening rib on relative lateral side surfaces corresponds to each other.In other words, stiffening rib can with corresponding surface integral manufacturing, and these two stiffening ribs correspond to each other on framework 101 thickness directions.Can further improve rigidity and the intensity of framework 101 like this, thereby make rigidity and the intensity of rocker arm body 100 integral body better.
Certainly, be understandable that, reinforcement structure 113 of the present invention is not limited to this, those skilled in the art is on the basis of having read specification content disclosed herein, can be configured to required form with strengthening according to an embodiment of the invention structure 113, can play the particularly Rigidity and strength of framework 101 edge sections of raising framework 101 as long as strengthen structure 113.
According to one embodiment of present invention, framework 101 can be made by powder metallurgy, can guarantee like this framework 101 have high temperature resistant, resistance to wear, the rigidity advantages of higher, thereby greatly improve the bulk life time of rocker arm body 100, guarantee that rocker arm body 100 runnings are reliable.
As shown in Figure 1 and Figure 4, framework 101 is provided with limited impression 115, and the end that limited impression 115 is configured to be suitable for elastic spacing one positions.Specifically, this elastic spacing one can be return spring 363, this return spring 363 can be set on the swing axis (being eccentric shaft 451 and pivotal axis 357) of rocker arm body 100, the free end of return spring 363 can be fastened in this limited impression 115, flexibly rocker arm body 100 only being against on camshaft mechanism 500, cam 505 zero clearances of the rocking arm roller 111 that guarantees rocker arm body 100 tops and camshaft mechanism 500 coordinate.Wherein, as shown in Figure 4, an end of this limited impression 115 can be communicated with the stiffening rib of concave.
With reference to Fig. 4 and shown in Figure 5, the section construction of the contiguous camshaft mechanism 500 of framework 101 becomes to comprise two parallel and be oppositely arranged positioning plates 117, and rocking arm roller 111 is folded between these two positioning plates 117 rotationally, thereby restriction rocker arm body 100 moves relative to camshaft mechanism 500 on the direction that is parallel to the rocking arm spin axis.
In general, rocker arm body 100 in accordance with a preferred embodiment of the present invention can have following advantage:
1) the umbilicate type stiffening rib has increased rocker arm body 100 intensity, has improved the reliability of system works;
Friction when 2) rocking arm roller 111 can reduce rocker arm body 100 with camshaft mechanism 500 relative movement;
3) have zero lift profile, little lift profile and high-lift profile, can increase the Richness of valve molded line, make motor all can obtain best air inlet coupling under different operating modes.
Below with reference to the tappet mechanism 200 of Fig. 1-Figure 21 detailed description according to the embodiment of the present invention.
Wherein, limit installing space in assembly department 201, the top of installing space opens wide to form open top, and the bottom of assembly department 201 also opens wide to form bottom opening.Be formed with assembly department oil input channel 211 and assembly department oil road 213 in assembly department 201.Assembly department oil input channel 211 can be communicated with the oil circuit corresponding with this assembly department oil input channel 211 in engine cylinder cover.Similarly, assembly department oil road 213 also can be communicated with the oil circuit corresponding with this assembly department oil road 213 in cylinder head.
Assembly department oil input channel 211 can be along radially arranging, and the one end can run through the outer circumferential face of assembly department 201, and the other end can run through the inner peripheral surface that is positioned at the open top part of assembly department 201.
Equally, assembly department oil road 213 also can be along radially arranging, the one end can run through the outer circumferential face of assembly department 201, and the other end can run through the inner peripheral surface that is positioned at the open top part of assembly department 201, and assembly department oil input channel 211 can be approximately 90 ° with the angle of assembly department oil road 213.
With reference to Fig. 6-shown in Figure 8, plunger 203 is located in installing space movably along the straight reciprocating motion direction of valve mechanism 600, and particularly, plunger 203 can be within the specific limits moves up and down in installing space along the direction of the center line of valve mechanism 600.
The top of valve mechanism 600 is stretched out to be suitable for only being against in the bottom of plunger 203 from the bottom of installing space, the bottom of plunger 203 can be the plane, the top of valve mechanism 600 also can correspondingly form the plane, and plunger 203 moves so that plunger 203 drives valve mechanism 600 better with valve mechanism 600 plane-plane contacts like this.
Certainly, be understandable that, the end face of the bottom surface of plunger 203 and valve mechanism 600 also can be other suitable shape, and for example the bottom surface of plunger 203 can be lower protruding arc shaped surface, and the end face of valve mechanism 600 can corresponding form the arc shaped surface of indent.
With reference to Fig. 6-shown in Figure 8, have the plunger cavity 215 that the top is opened wide in plunger 203, this plunger cavity 215 can be the general cylindrical chamber.And, being formed with plunger oil input channel 217 and plunger oil road 219 in plunger 203, plunger oil input channel 217 all can be along radially arranging and both can roughly becoming 90 ° of angles with plunger oil road 219.Plunger oil input channel 217 is communicated with plunger cavity 215 and assembly department oil input channel 211 respectively, and plunger oil road 219 is communicated with plunger cavity 215 and assembly department oil road 213 respectively.
Like this, the hydraulic oil in cylinder cap in corresponding asphalt channel just can be injected in plunger cavity 215 by assembly department oil input channel 211 and plunger oil input channel 217 successively, keeps plunger 203 is applied certain oil pressure.After hydraulic oil in plunger cavity 215 is full of, hydraulic oil can flow out from plunger oil road 219 and assembly department oil road 213 successively.
With reference to Fig. 6 and shown in Figure 8, Sealing 205 is arranged on assembly department 201 and seals the top of installing space, for example Sealing 205 can be located at the top open part of installing space and seal this open top, prevents that hydraulic oil from flowing out from the gap between Sealing 205 and assembly department 201.End face interval first intended distance of the bottom surface of Sealing 205 and plunger 203 thinks that the relative installing space of plunger 203 (along the direction of valve mechanism 600 center lines) leaves certain motion surplus when moving up and down.
As shown in Figure 7 and Figure 8, elastic component 207 is located in plunger cavity 215, and the two ends of elastic component 207 flexibly only are against respectively between the bottom surface of the bottom surface of plunger cavity 215 and Sealing 205.In other words, elastic component 207 is located between plunger cavity 215 and Sealing 205, and is in normal pressure contracting state.According to one embodiment of present invention, elastic component 207 can be spring.
Thus, elastic component 207 can impose on 203 1 of plungers along the downward elastic force of valve mechanism 600 center lines, simultaneously owing to being full of hydraulic oil in plunger cavity 215, this part hydraulic oil also can impose on 203 1 of plungers along the downward pressure of valve mechanism 600 center lines, the elastic force acting in conjunction of this pressure and elastic component 207 makes the bottom surface of plunger 203 often contact with the top of valve mechanism 600 on plunger 203.
And, this way of contact is elastic type, namely can automatically not give according to the variation of valve mechanism 600 relative initial positions, make up the engine long time use after because valve mechanism 600 wearing and tearing cause the problem that valve mechanism 600 can not fine airtight air inlet of combustion chamber, thereby can improve intake efficiency, guarantee valve mechanism 600 suction port of airtight firing chamber better when zero lift.
As shown in Figure 9, tappet roller 209 is located at the top of assembly department 201 pivotly, and this tappet roller 209 is suitable for the profile 103 of rocker arm body 100 adaptive.
Simultaneously, oil pressure by hydraulic oil and the elastic force acting in conjunction of elastic component 207 are on plunger 203, but make plunger 203 and the fit system of valve mechanism 600 become back springing type, and then can carry out supply according to the variation of valve mechanism 600 initial positions, guarantee that valve mechanism 600 often contacts with plunger 203.
According to one embodiment of present invention, as shown in Figure 6, tappet mechanism 200 also comprises two fixedly boards 221, and these two fixedly board 221 is parallel and relatively be arranged on the top of assembly department 201, and tappet roller 209 is folded in these two fixedly between board 221 pivotly.
With reference to Fig. 6, Fig. 9 and shown in Figure 10, tappet roller 209 by pass two fixedly board 221 bearing pin 223 and be folded in pivotly two fixedly between board 221, and be provided with drive bearing 210 between tappet roller 209 and bearing pin 223.Particularly, bearing pin 223 can with two fixing pin shaft hole interference fit on board 221, drive bearing 210 is set in the outside of bearing pin 223 and between the inner peripheral surface of the outer circumferential face of bearing pin 223 and tappet roller 209, the friction when being used for reducing tappet roller 209 and rolling.
Certainly, the invention is not restricted to this, in another embodiment of the present invention, tappet roller 209 by pass two fixedly board 221 bearing pin 223 and be folded in pivotly two fixedly between board 221 and tappet roller 209 integrally formed with bearing pin 223.That is to say, in this embodiment, bearing pin 223 is integrally formed with tappet roller 209, this moment bearing pin 223 with fixedly can be provided with bearing between board 221, the friction when being used for reducing 209 rolling of tappet roller.
As Fig. 6, Fig. 9 and shown in Figure 10, tappet mechanism 200 comprises two banking stops 225, these two banking stops 225 are located at respectively two transverse sides of tappet roller 209 and two fixedly between board 221, are understandable that, this laterally is the thickness direction of tappet roller 209.Wherein, one of them of two banking stops 225 is located between the fixedly board 221 of a side on tappet roller 209 thickness directions and this side, and 225 correspondences of a remaining banking stop are located between the fixedly board 221 of another side on tappet roller 209 thickness directions and this side.
By banking stop 225 is set, can be better tappet roller 209 axially on the degrees of freedom of (namely adjusting the direction of spin axis) restriction tappet roller 209, prevent that tappet roller 209 from moving axially.
Further, banking stop 225 is configured to annular substantially, and for example in the example of Fig. 6, banking stop 225 all forms ring.And, this substantially the radial dimension of the banking stop 225 of annular greater than the radial dimension of tappet roller 209, that is to say, in the example of Fig. 5 and Fig. 6, the external diameter of ring banking stop 225 is greater than the external diameter of tappet roller 209.
adopt this design, can coordinate better to move being parallel on the direction of adjusting spin axis restriction rocker arm body 100 with the bottom of rocker arm body 100, for example the bottom of rocker arm body 100 can be formed with projection 102, the profile 103 of rocker arm body 100 is formed on the bottom surface of this projection 102, distance between these two banking stops 225 can be about equally with projection 102 width, thereby restriction projection 102 and rocker arm body 100 integral body move axially, the profile 103 that guarantees rocker arm body 100 closely cooperates with tappet roller 209 constantly, avoid profile 103 and 209 dislocation of tappet roller.
Certainly, the invention is not restricted to this, in other embodiments of the invention, the shape of banking stop 225 also is not limited to annular substantially, for example also can form rectangle or other shape, the part that only needs this banking stop 225 to have to project upwards tappet roller 209 in case the bottom of rocker arm body 100 for example projection 102 can be limited in getting final product between the projection of these two banking stops 225.
According to one embodiment of present invention, as shown in Figure 7 and Figure 8, tappet mechanism 200 also comprises positive stop lug boss 227, and this positive stop lug boss 227 is located in installing space and the outer circumferential face of contiguous plunger 203.The outer circumferential face of plunger 203 is provided with flange 229 and when plunger 203 moves down the second intended distance in installing space, that is to say, when the relative installing space of plunger 203 moves down the second intended distance along valve mechanism 600 center lines, the bottom surface of flange 229 only is against on the end face of positive stop lug boss 227, that is to say this moment flange 229 be supported on positive stop lug boss 227 above, thereby avoid because move too fierceness or valve mechanism 600 motions of valve mechanism 600 were lost efficacy and caused plunger 203 integral body to drop out from the bottom of installing space.
In brief, when valve mechanism is in initial position, interval, bottom surface first intended distance of the end face of plunger 203 and Sealing 205, end face interval second intended distance of the bottom surface of flange 229 and positive stop lug boss 227, these two distances are plunger 203 motion surplus of installing space relatively on valve mechanism 600 centerline directions.
Thus, under the oil pressure effect of elastic component 207 and hydraulic oil, can not give according to the variation of valve mechanism 600 relative initial positions, make up the problem that the engine long time can not fine airtight air inlet of combustion chamber due to the caused valve mechanism 600 that expands during due to valve mechanism 600 wearing and tearing or valve mechanism 600 work after using, and the setting of positive stop lug boss 227 can also be avoided losing efficacy and causing plunger 203 integral body to drop out from the bottom of installing space due to valve mechanism 600 motions.
As shown in Figure 8, the end face of flange 229 is preferably concordant with the end face of plunger 203, and positive stop lug boss 227 is preferably formed and is ring.
In some embodiments of the invention, the first intended distance is 1-2mm, in other words, when valve mechanism 600 is positioned at initial position, interval, the bottom surface 1-2mm of the end face of plunger 203 and Sealing 205, because span between the bottom surface of plunger 203 end faces and Sealing 205 is very little, the while is due to the physical property of hydraulic oil, thereby after making hydraulic oil be full of plunger cavity 215 and plunger 203 being applied a downward pressure, substantially can not flow into from this gap the outside of plunger 203.
In some embodiments of the invention, the second intended distance is 1-2mm.In other words, when valve mechanism 600 is positioned at initial position, the end face interval 1-2mm of the bottom surface of flange 229 and positive stop lug boss 227.
As shown in Figure 6, according to one embodiment of present invention, Sealing 205 is configured to be suitable for the screw plug that is connected with assembly department 201 screw threads.Can be formed with outside thread on the outer circumferential face of this screw plug, the top open part of installing space can correspondence be formed with internal thread, thereby by screw-thread fit, screw plug is securely fixed on assembly department 201 like this, to seal better the top of installing space, also can be used as simultaneously for example supporting base of spring of plunger 203 and elastic component 207.
In general, prop column structure 200 in accordance with a preferred embodiment of the present invention can have following advantage:
1) simple in structure, can reduce mechanical friction, and then reduce oil consumption, easy to implement, implementation cost is low;
2) guarantee what valve mechanism 600 tops and the outer bottom of plunger 203 always contacted, the stability of increase system works;
3) effectively reduce the NVH characteristic that engine fuel consumption improves motor simultaneously;
4) be conducive to increase turbulent flow in cylinder, improve velocity of combustion, increase the low speed torque of motor, use larger valve lift can significantly improve air inflow during high rotating speed, and then the output power when promoting high rotating speed.
Below with reference to Fig. 1-Figure 21, actuating mechanism 300 is according to an embodiment of the invention described.
As Figure 11-shown in Figure 14, actuating mechanism 300 comprises active part 301 and secondary part 351 according to an embodiment of the invention.Active part 301 comprises driving shaft 303 and the driving gear 305 that is set on driving shaft 303, and driving gear 305 can be distinguished processing separately with driving shaft 303, and then this driving gear 305 can be fixing by keyway arrangements and driving shaft 303.Certainly, driving gear 305 also can be integrally formed with driving shaft 303.
As Figure 11 and shown in Figure 13, secondary part 351 comprises driven shaft 353 and pivotal axis 357, driven shaft 353 is connected with pivotal axis 357 and driving shaft 303, driven shaft 353 and pivotal axis 357 in any two parallel to each other.In other words, driving shaft 303, driven shaft 353 are parallel in twos with pivotal axis 357, and pivotal axis 357 is connected with driven shaft 353.
As shown in figure 11, driven shaft 353 is provided with driven gear 355, this driven gear 355 and driving gear 305 engagements, driving shaft 303 drives driving gear 305 rotations like this, and driving gear 305 drives with the further driven shaft 353 that drives of driven gear 355, the driven gear 355 of its engagement and rotates around adjusting spin axis.
Wherein the central axis of driven shaft 353 overlaps with the adjustment spin axis, in other words, the adjustment spin axis of this actuating mechanism 300 is the central axis of driven shaft 353, and when this adjustment spin axis is zero with valve mechanism 600 lift amount, the spin axis of tappet roller 209 overlaps.
As Figure 12-shown in Figure 14, pivotal axis 357 is suitable for being connected with rocker arm body 100 and the central axis of pivotal axis 357 overlaps with the rocking arm spin axis.For example, rocker arm body 100 is set in the outside of this pivotal axis 357 swingably, and rocker arm body 100 can swing around the central axis of this pivotal axis 357 under the driving of camshaft mechanism 500.
like this, thereby when realizing the adjusting of valve mechanism 600 lift amount by the profile 103 that changes rocker arm body 100 with tappet roller 209 cooperation positions, can be rotated around adjusting spin axis by driving gear 305 driving driven gears 355 and driven shaft 353, because the relative cylinder cap of driven shaft 353 is irremovable and only rotating, therefore the pivotal axis 357 that is connected with driven shaft 353 can rotate around adjusting spin axis, fix sheathed rocker arm body 100 on pivotal axis 357 also around adjusting the spin axis rotation thereby make, and then the profile 103 that the changes rocker arm body 100 bottoms position that coordinates with tappet roller 209, realize the adjusting of valve mechanism 600 lifts.
And, angle that driven shaft 353 turns over is different; the profile 103 of rocker arm body 100 bottoms is also different with the position that tappet roller 209 coordinates; can realize the different rotation angles of driven shaft 353 by the driving gear 305 that meshes from driven gear 355, and then can realize the continuous variable of valve mechanism 600 lifts.
According to one embodiment of present invention, can be formed with oil storage hole in driven shaft bearing 359, be provided with the driven shaft oil duct on driven shaft 353, this driven shaft oil duct is communicated with when driven shaft 353 rotates separably with oil storage hole.Specifically, be formed with oil storage hole in driven shaft bearing 359, can be used for laying in lubricant oil in this oil storage hole, driven shaft 353 is provided with the driven shaft oil duct, one end of this driven shaft oil duct is communicated with oil storage hole when driven shaft 353 is positioned at initial position, and the other end can be communicated with the corresponding oil circuit in cylinder cap.
Like this, when driven shaft 353 is positioned at initial position, in cylinder cap, the lubricant oil of corresponding oil circuit can flow in oil storage hole by the driven shaft oil duct, and after driven shaft 353 rotates, this oil storage hole separates with a described end of driven shaft oil duct, the interior lubricant oil of oil storage hole this moment namely can be used for lubricated driven shaft 353, with respect to the friction of driven shaft bearing 359, improves transmission efficiency when reducing driven shaft 353 rotation.
Need to prove, the initial position of above-mentioned driven shaft 353 can be valve mechanism 600 lift amount residing positions of this driven shaft 353 when being zero, and when needs were regulated the lift amount of valve mechanism 600, driven shaft 353 namely rotated and leaves this initial position.
In one embodiment of the invention, as shown in figure 11, pivotal axis 357 is provided with pivotal axis limit structure 361, this pivotal axis limit structure 361 is configured to be suitable for limit rocker arm body 100 and moves with respect to pivotal axis 357 on the direction that is parallel to the rocking arm spin axis, that is to say, this pivotal axis limit structure 361 is used for limiting in the axial direction rocker arm body 100 axle 357 that is pivoted relative to each other and moves, thereby guarantees that rocker arm body 100 can coordinate with camshaft mechanism 500 and tappet mechanism 200 better.
In some embodiments of the invention, driving gear 305 and driven gear 355 are a plurality of and correspond to each other respectively.For example in the example of Figure 11-Figure 14, this driving gear 305 and driven gear 355 are two.Be understandable that, the actuating mechanism 300 in this example is applicable to have dual valve mechanism for example on the cylinder of two intake valves.Certainly, have the motor of one or three intake valve for each cylinder, this driving gear 305 and driven gear 355 can correspond to a pair of or three pairs.
According to one embodiment of present invention, as shown in figure 11, pivotal axis 357 comprises each interval and two sections (being 357a, the 357b in Figure 11) being connected with driven shaft 353 respectively, in other words, in this embodiment, pivotal axis 357 is broken into two sections, each section is connected with driven shaft 353 respectively, coordinate like this driving gear 305 and the driven gear 355 of two pairs of engagements, can so that secondary part 353 is stressed more even, greatly improve stability and the durability of actuating mechanism 300.
And, adopt the pivotal axis 357 of this disconnecting type can also effectively reduce the total quality of actuating mechanism 300, and then guarantee that actuating mechanism 300 is lighter, flexible, improve abrasion condition, facilitate simultaneously the layout of cylinder cap.Be understandable that, the actuating mechanism with disconnecting type pivotal axis 357 300 in this embodiment is applicable to every cylinder and has for example motor of two intake valves of two valve mechanisms.
Certainly, the invention is not restricted to this, in another embodiment of the present invention, pivotal axis 357 also can integral body manufacture one, and namely middle is form continuous but not that above-described embodiment breaks.
In order to improve the bulk strength of secondary part 351, simplified manufacturing technique, driven shaft 353, pivotal axis 357 can be integrally formed with driven gear 355.Certainly, the invention is not restricted to this, driven shaft 353, pivotal axis 357 also can be distinguished independent manufacturing with driven gear 355, and then pivotal axis 357 and driven gear 355 are assemblied in respectively on driven shaft 353.
As Figure 11, Figure 12 and shown in Figure 14, actuating mechanism 300 also comprises return spring 363, return spring 363 can be set on pivotal axis 357, and an end of return spring 363 is buckled on rocker arm body 100, flexibly rocker arm body only is against on camshaft mechanism 500.
By return spring 363 is set, thereby can guarantee that rocker arm body 100 coordinates with camshaft mechanism 500 zero clearances, say with having more, elastic force by return spring 363, cam 505 zero clearances of the rocking arm roller 111 that can make rocker arm body 100 tops and camshaft mechanism 500 coordinate, thereby improved whole stability, avoided rocker arm body 100 and camshaft mechanism 500 gap to occur in the process of relative movement, affected normal working of engine.
In a preferred embodiment of the invention, driven gear 355 is the cardinal principle tooth sector, as shown in figure 13.Thus, adopt tooth sector substantially, can realize on the one hand carrying out effectively spacingly to rocker arm body 100 when spin axis rotates around adjusting, also alleviated on the other hand the total quality of actuating mechanism 300.
For first aspect, specifically, driven shaft 353 rotates the profile 103 contact cooperation position different from tappet roller 209 that can realize rocker arm body 100 bottoms in the several angle scope, and hypothesis driven shaft 353 turns over outside this angular range, the profile 103 that rocker arm body 100 may occur breaks away from tappet roller 209 and coordinates, and causes rocker arm body 100 integral-rotations excessive.
Therefore, can avoid the generation of this situation after employing cardinal principle tooth sector, after namely the tooth of tooth sector two ends breaks away from substantially with this when driving gear 305, driving gear 305 namely breaks away from engagement with this cardinal principle tooth sector, if this moment, driving gear 305 still rotated according to sense of rotation before, this cardinal principle tooth sector will no longer rotate.
For second aspect, specifically, owing to adopting this cardinal principle tooth sector, thereby alleviated to a certain extent the quality of actuating mechanism 300, can make like this actuating mechanism 300 lighter, flexible, greatly improve the abrasion condition of actuating mechanism 300, simultaneously the layout of convenient cylinder cap.
1) simple in structure, be easy to the layout of cylinder cap, cost is low;
2) the drive mechanism total quality is lighter, effectively reduces the overall mass of actuating mechanism 300, reduces fuel consume;
3) have good lubrication effect between driven shaft bearing 359 and driven shaft 353, effectively reduce mechanical friction and noise;
4) whole driving mode is simply firm, and stability and durability are good.
Below with reference to Fig. 1-Figure 21, actuating mechanism 400 is in accordance with another embodiment of the present invention described.
Housing 401 can form general cylindrical housing 401, and housing 401 can be fixed on a side of cylinder cap.As Figure 15 and shown in Figure 16, the inner peripheral surface of housing 401 is provided with a plurality of spaced housing boss 403, housing boss 403 radially extends towards the center of housing 401, in other words, all along radially the extending towards adjusting spin axis of housing 401, a plurality of housing boss 403 are upwards spaced apart in week for each housing boss 403.
As Figure 15 and shown in Figure 16, rotor 421 is located in housing 401 rotationally and the central axis of rotor 421 overlaps with adjusting spin axis, is provided with a plurality of rotor boss 423 on the outer circumferential face of rotor 421.In other words, rotor 421 is located in housing 401 rotationally around the central axis of rotor 421, the central axis of rotor 421 is the adjustment spin axis of actuating mechanism 400, and this adjustment spin axis overlaps with the spin axis of tappet roller 209 when valve mechanism 600 lift amount are zero.
Wherein the space between two of arbitrary neighborhood housing boss 403 is defined as and is isolated from each other and airtight the first oil pocket 405 and the second oil pocket 407 by being arranged on therebetween a rotor boss 423, and wherein the first oil pocket 405 is positioned at the downstream side of the second oil pocket 407 in the clockwise direction on (the direction B in Figure 16).
For example, as shown in figure 16, the distance of each housing boss 403 is adjusted the nearer side surface of spin axis and the outer circumferential face of rotor 421 closely cooperates, thereby limits above-mentioned space between the outer circumferential face of adjacent two housing boss 403, housing 401 and rotor 421.
Be provided with a rotor boss 423 between two housing boss 403 of arbitrary neighborhood, the distance of this rotor boss 423 is adjusted spin axis one side far away and can be closely cooperated with the inner peripheral surface of housing 401, thereby the space of 403 of corresponding two housings boss is isolated into two independences and airtight the first oil pocket 405 and the second oil pocket 407
This first oil pocket 405 is positioned at the downstream side (first oil pocket 405 in same space and the second oil pocket 407) of this second oil pocket 407 in the clockwise direction, and a plurality of like this housing boss 403 and a plurality of rotor boss 423 just can limit a plurality of the first oil pockets 405 and a plurality of the second oil pocket 407 that is interspersed jointly on circumferentially.
For example, take four housing boss 403 and four rotor boss 423 as example, can limit altogether four the first oil pockets 405 and four the second oil pockets 407 between these four housing boss 403 and four rotor boss 423, these four the first oil pockets 405 and these four the second oil pockets 407 upwards were crisscross arranged in week.
Be limited with the first oil duct and the second oil duct in rotor 421, an end of the first oil duct is connected with the first oil pocket 405, and the other end of the first oil duct is suitable for being connected with the oil pump of motor.Similarly, an end of the second oil duct is connected with the second oil pocket 407, and the other end of the second oil duct also is suitable for being connected to the oil pump of motor.Need to prove, here " connection " should make broad understanding, and namely the second end of the first oil duct and the second oil duct can be connected on oil pump indirectly by intermediary.
The first oil duct can comprise a plurality of seed oils roads, and an end in and each seed oil identical with the quantity of the first oil pocket 405 road, a plurality of seed oils road of this first oil duct all is communicated with the first oil pocket 405.Similarly, the second oil duct also can comprise a plurality of seed oils roads, and an end in and each seed oil identical with the quantity of the second oil pocket 407 road, a plurality of seed oils road of this second oil duct all is communicated with the second oil pocket 407.
With reference to Figure 15-Figure 17, an end of eccentric shaft 451 is fixed on rotor 421 and the other end extends outward in housing 401, and the central axis of eccentric shaft 451 overlaps with the rocking arm spin axis and is parallel to the adjustment spin axis.Wherein, rocker arm body 100 is set in the outside of eccentric shaft 451 swingably, and rocker arm body 100 can be just that the rocking arm spin axis swings around the central axis of eccentric shaft 451 under the driving of camshaft mechanism 500 like this.
the working principle of this actuating mechanism 400 is: hydraulic oil can be from the first oil duct to a plurality of the first interior fuel feeding of oil pocket 405, and the hydraulic oil in a plurality of the second oil pockets 407 can flow out in the second oil duct, the oil pressure that is equivalent to like this each the first oil pocket 405 is all higher than the oil pressure of second oil pocket 407 corresponding with it, under the effect of this pressure difference, rotor 421 can rotate relative to housing 401, because housing 401 is fixed, therefore rotor 421 can be around adjusting the spin axis rotation in housing 401, in the process that rotor 421 rotates, the volume of the first oil pocket 405 becomes large and the smaller volume of the second oil pocket 407, finally rotor 421 no longer rotates relative to housing 401 after the oil pressure balance in the first oil pocket 405 and the second oil pocket 407.
Certainly, hydraulic oil also can flow to a plurality of the second oil pockets 407 from the second oil duct, and the hydraulic oil in a plurality of the first oil pockets 405 flows out from the first oil duct, and in the case, the sense of rotation of rotor 421 is contrary to the above.
For example in the example of Fig. 1, when fuel-displaced, rotor 421 can clockwise rotate when the first interior oil-feed of oil pocket 405, the second oil pocket 407.Equally, when fuel-displaced and the second oil pocket 407 oil-feed of the first oil pocket 405,421 of rotors rotate counterclockwise.
In brief, this actuating mechanism 400 is exactly to rotate by the poor drive rotor 421 of the oil pressure of the first oil pocket 405 and the second oil pocket 407, thereby realizes the adjusting of valve lift amount.
in addition, need to prove, clockwise rotate as example with rotor 421, the oil pump capacity of the oil inlet quantity of a plurality of the first oil pockets 405 and a plurality of the second oil pockets 407 can be controlled by ECU, rotating speed when for example ECU can move according to motor, power, the parameters such as load judge the operating conditions of motor, then control adaptively the total amount of the hydraulic oil that feeds a plurality of the first oil pockets 405 according to the engine operation condition that draws, also control simultaneously the total amount of the hydraulic oil that releases from a plurality of the second oil pockets 407, like this after the effect lower rotor part 421 of pressure reduction clockwise rotates several angle, because making the oil pressure in two oil pockets, the Volume Changes of the first oil pocket 405 and the second oil pocket 407 equates, rotor 421 no longer rotates, complete adjusting.Be understandable that it is exactly required adjusted position that rotor 421 turns over the equilibrium position that is in after several angle.In addition, also need to prove, the amount that hydraulic oil enters each the first oil pocket 405 is preferably identical, and the amount of the hydraulic oil that releases of each second oil pocket 407 is also preferably identical equally.
The working procedure that rotates counterclockwise for rotor 421 with above-mentioned clockwise rotate just opposite, i.e. fuel-displaced, the second oil pocket 407 oil-feeds of the first oil pocket 405 this moment, it is similar that its detailed process and principle and above-mentioned rotor 421 clockwise rotate, and please refer to top description, no longer describes in detail here.
In one embodiment of the invention, the distance of each rotor boss 423 is adjusted on a spin axis side surface far away and is provided with elastic piece structure 427, this elastic piece structure 427 closely cooperates with the inner peripheral surface of housing 401, that is to say, in this embodiment, the end face of rotor boss 423 is not directly to contact with the inner peripheral surface of housing 401, but close-fitting with the inner peripheral surface of housing 401 by elastic piece structure 427.
Particularly, be provided with groove on a described side surface of each rotor boss 423, this groove can form roughly lineal shape groove.Elastic piece structure 427 comprises shell fragment and projection, and a side and the other end that an end of shell fragment is fixed on projection are suitable for flexibly being pressed in groove, for example are pressed on the bottom surface of groove, so that the opposite side of projection only is against on the internal surface of housing 401.
Can guarantee that like this opposite side surface of projection and the inner peripheral surface of housing 401 fit tightly, thereby better the first oil pocket 405 and the second oil pocket 407 are kept apart, and adopt such elastic piece structure 427, can also effectively reduce the friction of rotor boss 423 and housing 401 inner peripheral surfaces.
Excessive for fear of rocker arm body 100 integral-rotations, cause the profile 103 of rocker arm body 100 to coordinate with 209 disengagings of tappet roller, preferably, eccentric shaft 451 rotates in predetermined angular range.
For example in one embodiment of the invention, as Figure 15-shown in Figure 21, housing 401 comprises shell 409 and end cap 411, one side of shell 409 opens wide to form shell aperture, end cap 411 is arranged on shell 409 and seals this shell aperture, be formed with one section on shell 409 around the circular arc restraining groove 413 of adjusting spin axis, wherein the described the other end of eccentric shaft 451 passes circular arc restraining groove 413 and extends outward.
Like this, by the position-limiting action of circular arc restraining groove 413, can avoid eccentric shaft 451 when driving rocker arm body 100 around the adjustment spin axis, rocker arm body 100 breaks away from tappet roller 209 and coordinates, thereby greatly improves the stability of system works.
According to one embodiment of present invention, as Figure 15 and shown in Figure 21, actuating mechanism 400 also comprises positioning component 461, this positioning component 461 is located on one of them rotor boss 423, be used for when assembling, end cap 411 and rotor 421 being positioned, avoid rotor 421 freely to rotate relative to housing 401, affect initial mounting point, cause this actuating mechanism 400 can not correctly drive rocker structure 100.
As shown in Figure 1, this positioning component 461 can comprise stop collar 463, stop screw 465 and spacing elastic component 467.Wherein stop collar 463 can be embedded in the receiving bore 424 that is formed on rotor boss 423, that is to say, can be formed with receiving bore 424 on rotor boss 423, this receiving bore 424 opens wide towards a side of end cap 411, and stop collar 463 can be located at this receiving bore 424 and integral body is hidden in the hole.
As Figure 16, Figure 17 and shown in Figure 21, stop screw 465 wear by stop collar 463 and an end for example tail end only be against in spacing hole 412 on end cap 411 internal surfaces, wherein be formed with hydraulic oil steering channel 414 on the internal surface of end cap 411, one in one end of this hydraulic oil steering channel 414 and the first oil pocket 405 and the second oil pocket 407 is communicated with, and the other end is communicated with spacing hole 412.Hydraulic oil steering channel 414 can be the groove type steering channel that is formed on end cap 411 internal surfaces.
Spacing elastic component 467 is located in stop collar 463, and the other end that spacing elastic component 467 is arranged on stop screw 465 by elasticity is for example between the bottom surface of head end and receiving bore 424.The radial dimension of the head end of stop screw 465 can prevent like this that greater than the radial dimension of the tail end of stop screw 465 stop screw 465 integral body from passing from stop collar 463.
Thus, when being arranged on end cap 411 on shell 409, because spacing elastic component 467 is in compressive state, its the other end that can impose on stop screw 465 is elastic force of head end for example, an end of the effect lower limit screw 465 of this elastic force for example tail end can be positioned at spacing hole 412, thereby realize the positioning action of 411 pairs of rotors 421 of end cap, prevent that rotor 421 from freely rotating relative to housing 401, the impact assembling.
And when actuating mechanism 400 work, be full of hydraulic oil in the first oil pocket 405 and the second oil pocket 407, hydraulic oil can flow in spacing hole 412 by hydraulic oil steering channel 414, along with hydraulic oil constantly enters, the interior oil pressure of spacing hole 412 constantly increases, and after oil pressure was increased to a certain degree, the tail end that can push against stop screw 465 withdrawed from from spacing hole 412, thereby removed the positioning action of 411 pairs of rotors 421 of end cap, this moment, rotor 421 can be in the interior rotation of housing 401.Alternatively, in the example of Figure 15, spacing elastic component 467 is spring.
In one embodiment of the invention, as Figure 15-shown in Figure 17, actuating mechanism 400 also comprises connecting valve 471, the first oil duct all is connected with the oil pump of motor by this connecting valve 471 with the second oil duct, such the first oil pocket 405, the second oil pocket 407 just can be accepted the hydraulic oil squeezed into from oil pump, and perhaps the hydraulic oil in the first oil pocket 405, the second oil pocket 407 can be back to oil pump.
As Figure 15-shown in Figure 17, one end of connecting valve 471 passes end cap 411 and is fixed in rotor 421, be provided with seal ring between connecting valve 471 and end cap 411, thereby avoid hydraulic oil to flow out from connecting valve 471 and the gap of end cap 411, the precision when affecting actuating mechanism 400 driving rocker arm bodies 100 adjusting valve mechanism 600 lift.
Need to prove, connecting valve 471 is connected with the oil pump of motor and can makes broad understanding here, and for example connecting valve 471 can be communicated with corresponding hydraulic oil circuit in cylinder cap, and the interior hydraulic oil circuit of cylinder cap can directly be connected with oil pump.
Be understandable that, connecting valve 471 has the first oil circuit that is communicated with the first oil duct respectively and the second oil circuit that is communicated with the second oil duct respectively.
In a preferred embodiment of the invention, housing boss 403 is identical with the number of rotor boss 423, for example housing boss 403 and rotor boss 423 are four, and all upwards evenly distribute in week, that is to say about 90 ° of two housing boss 403 of arbitrary neighborhood or rotor boss 423 intervals.
The below is take four rotor boss 423 and four housing boss 403 as example, and brief description is working principle and the process of actuating mechanism 400 according to an embodiment of the invention.
At first describing rotor 421 clockwise rotates.
Oil pump can be supplied with connecting valve 471 with hydraulic oil by the corresponding hydraulic oil circuit in cylinder cap, and hydraulic oil is averagely allocated to four first oil pockets 405 with this part hydraulic oil by four the first oil ducts by the first oil circuit in connecting valve 471.
Simultaneously, four the second oil pocket 407 interior part hydraulic oil release by four the second corresponding oil ducts and connecting valve 471, and the hydraulic oil that this part is released can be back to oil pump from corresponding hydraulic oil circuit in cylinder cap.
Like this, the hydraulic oil in each first oil pocket 405 increases, and the hydraulic oil in each second oil pocket 407 reduces, thereby mineralization pressure is poor, because housing 401 is fixed, therefore under the poor effect of hydraulic fluid pressure, hydraulic oil can clockwise rotate by drive rotor 421.
In the process that rotor 421 clockwise rotates, it is large that the volume of the first oil pocket 405 becomes, oil pressure reduces gradually, the smaller volume of the second oil pocket 407, oil pressure increases gradually, rotor 421 stops operating after the oil pressure in the first oil pocket 405 and the second oil pocket 407 reaches balance again, and this position is the position after adjusting.
During this period, eccentric shaft 451 drives rocker arm body 100 motions around adjusting spin axis under the drive of rotor 421, thereby change the profile 103 of rocker arm body 100 bottoms and the cooperation position of tappet roller 209, thereby realize the change of valve mechanism 600 lift amount.
Secondly, when rotor 421 rotated counterclockwise, four the first oil pocket 405 interior hydraulic oil released, and four the second interior oil-feeds of oil pocket 407, thereby rotor 421 is rotated counterclockwise, and its principle is consistent during with above-mentioned clockwise rotating, and is not described in detail course of action here.
Be appreciated that, when motor becomes the high speed high load working condition from the little load of low speed, the firing chamber need to enter more air, so that the power output of fully burning and improving motor with more fuel oil, this moment, the lift amount of valve mechanism 600 need be heightened accordingly, that is to say the cooperation position of the profile 103 that needs by changing rocker arm body 100 bottoms and tappet roller 209.
The change of this cooperation position needs rocker arm body 100 to turn over respective angles and realize around adjusting spin axis, so as the high-lift curved surface of rocker arm body 100 namely the 3rd section curved surface 109 coordinate with tappet roller 209.
And rocker arm body 100 can it turns over required adjusting angle by actuating mechanism 400 drivings, that is to say can be by releasing a certain amount of hydraulic oil in a plurality of the second oil pockets 407 (certainly also a plurality of the first oil pocket 405 drainings and a plurality of the second oil pocket 407 oil-feeds) simultaneously to a plurality of first a certain amount of hydraulic oil of the interior infeed of oil pocket 405, turn over its required adjustment angle thereby make rotor 421 drive eccentric shaft 451 and then drive rocker arm body 100, finally obtain the lift amount of required valve mechanism 600.
In general, actuating mechanism 400 according to an embodiment of the invention, can have following advantage:
1) can effectively reduce the windage loss of valve;
That 2) can effectively reduce low speed prolongs journey loss, thereby improves the low engine speed moment of torsion;
3) these actuating mechanism 400 controls are simple, accurate, and reliability is high, and cost is low, is easy to realize.
Below with reference to Figure 22-Figure 27, the working procedure of variable valve lift driving device 1000 is according to an embodiment of the invention described simply.
At first with reference to Figure 22-Figure 23, in these two figure, the first paragraph curved surface 105 of the profile 103 of rocker arm body 100 bottoms coordinates with tappet roller 209, when this moment, camshaft mechanism 500 driving rocker arm bodies 100 swung around the rocking arm spin axis, the lift of valve mechanism 600 is zero, be the suction port of the airtight firing chamber of valve mechanism, realize intelligent cylinder deactivation.
Secondly, with reference to Figure 24-Figure 25, in these two figure, the second segment curved surface 107 of the profile 103 of rocker arm body 100 bottoms coordinates with tappet roller 209, when this moment, camshaft mechanism 500 driving rocker arm bodies 100 swung around the rocking arm spin axis, the lift of valve mechanism 600 is less, is suitable for the low engine speed small load condition.
At last, with reference to Figure 26-Figure 27, in these two figure, the 3rd section curved surface 109 of the profile 103 of rocker arm body 100 bottoms coordinates with tappet roller 209, when this moment, camshaft mechanism 500 driving rocker arm bodies 100 swung around the rocking arm spin axis, the lift of valve mechanism 600 is larger, is suitable for the high engine speeds high load working condition.
Be understandable that, at actuating mechanism 300, when 400 driving rocker arm bodies 100 swing around the rocking arm spin axis, on the second segment curved surface 107 that can realize rocker arm body 100 bottoms and the 3rd section curved surface 109, the arbitrary position contacts cooperation with tappet roller 209, after cooperation position changes, valve lift is corresponding change also, thereby has realized the adjustable continuously of valve lift.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiments or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiments, scope of the present invention is limited by claim and equivalent thereof.
Claims (27)
1. a variable valve lift driving device that is used for motor, is characterized in that, comprising:
Valve mechanism;
Tappet mechanism, described tappet mechanism is located at the top of described valve mechanism;
Camshaft mechanism, described camshaft mechanism is located at the top of described valve mechanism, and described camshaft mechanism has cam;
Rocker arm body, described rocker arm body are located between described tappet mechanism and described camshaft mechanism and by the rocking arm spin axis of the described rocker arm body of described actuated by cams around described rocker arm body and swing; And
Actuating mechanism, described actuating mechanism are used for driving described rocker arm body around the adjustment spin axis rotation of described actuating mechanism, with the lift of the described valve mechanism of continuous variable ground adjusting.
2. the variable valve lift driving device for motor according to claim 1, it is characterized in that, described rocker arm body forms such profile, described profile coordinates with described tappet mechanism and described profile is configured to be suitable for obtaining required valve lift, and described rocker arm body is used for driving described tappet mechanism and does straight reciprocating motion.
3. the variable valve lift driving device for motor according to claim 2, is characterized in that, described rocker arm body comprises:
Framework, wherein said profile are formed on described framework; And
Rocking arm roller, described rocking arm roller rotatably are located on the part corresponding with described camshaft mechanism of described framework.
4. the variable valve lift driving device for motor according to claim 3, is characterized in that, described profile comprises first paragraph curved surface, second segment curved surface and the 3rd section curved surface,
Wherein said second segment curved surface is connected between described first paragraph curved surface and described the 3rd section curved surface, and described first paragraph curved surface compares described the 3rd section more close described camshaft mechanism of curved surface,
Described first paragraph curved surface is arc-shaped surface, and described rocking arm spin axis and the corresponding central axes of described first paragraph curved surface,
The distance of described second segment curved surface and the 3rd section curved surface and described rocking arm spin axis, along increasing gradually from the direction of described first paragraph curved surface towards described the 3rd section curved surface.
5. the variable valve lift driving device for motor according to claim 4, is characterized in that, described second segment curved surface respectively with described first paragraph curved surface and the 3rd section curved surface rounding off.
6. the variable valve lift driving device for motor according to claim 3, is characterized in that, described framework is respectively arranged with the reinforcement structure on two relative lateral side surfaces.
7. the variable valve lift driving device for motor according to claim 1, it is characterized in that, the top structure of described tappet mechanism has pivotable tappet roller, contact to roll with described rocker arm body, and in the situation that described valve mechanism lift is zero, the central axis of described tappet roller overlaps with described adjustment spin axis.
8. the variable valve lift driving device for motor according to claim 7, is characterized in that, described tappet mechanism comprises:
Assembly department limits installing space in described assembly department, and the top of described installing space and bottom are all opened wide, and are formed with assembly department oil input channel and assembly department oil road in described assembly department;
Plunger, described plunger is located in described installing space and the top of described valve mechanism is stretched out to be suitable for only being against in the bottom of described plunger from the bottom of described installing space along the straight reciprocating motion direction of described valve mechanism movably, has the plunger cavity that the top is opened wide in described plunger, and be formed with plunger oil input channel and plunger oil road in described plunger, described plunger oil input channel is communicated with described plunger cavity and described assembly department oil input channel respectively, and described plunger oil road is communicated with described plunger cavity and described assembly department oil road respectively;
Sealing, described Sealing are arranged on described assembly department and seal the top of described installing space, end face interval first intended distance of the bottom surface of described Sealing and described plunger;
Elastic component, described elastic component are located in described plunger cavity, and the two ends of described elastic component flexibly only are against respectively between the bottom surface of the bottom surface of described plunger cavity and described Sealing; And
The tappet roller, described tappet roller is located at the top of described assembly department pivotly.
9. the variable valve lift driving device for motor according to claim 8, it is characterized in that, described tappet mechanism also comprises two fixedly boards, described two fixedly board is parallel and relatively be arranged on the top of described assembly department, and described tappet roller is folded in described two fixedly between board pivotly.
10. the variable valve lift driving device for motor according to claim 9, it is characterized in that, described tappet mechanism further comprises two banking stops, and described two banking stops are located at respectively two transverse sides of described tappet roller and described two fixedly between board.
11. the variable valve lift driving device for motor according to claim 10 is characterized in that, described banking stop is configured to annular substantially, and the radial dimension of described banking stop is greater than the radial dimension of described tappet roller.
12. the variable valve lift driving device for motor according to claim 8 is characterized in that described tappet mechanism also comprises positive stop lug boss, described positive stop lug boss is located in described installing space and the outer circumferential face of contiguous described plunger,
The outer circumferential face of described plunger be provided with flange and when described plunger moves down the second intended distance in described installing space the bottom surface of described flange only be against on the end face of described positive stop lug boss.
13. the variable valve lift driving device for motor according to claim 1 is characterized in that, described actuating mechanism comprises:
Active part, described active part comprise driving shaft and the driving gear that is set on described driving shaft; And
Secondary part, described secondary part comprises driven shaft and pivotal axis, described driven shaft be connected with described pivotal axis and described driving shaft, described driven shaft and described pivotal axis in any two parallel to each other, described driven shaft is rotatably mounted on the cylinder cap of motor, and described driven shaft is provided with the driven gear with described driving gear engagement, wherein
The central axis of described driven shaft overlaps with described adjustment spin axis, and described pivotal axis is suitable for being connected with described rocker arm body and the central axis of described pivotal axis overlaps with described rocking arm spin axis.
14. the variable valve lift driving device for motor according to claim 13 is characterized in that the two ends of described driven shaft are arranged with respectively the driven shaft bearing, described driven shaft bearing is suitable for being fixed on described cylinder cap.
15. the variable valve lift driving device for motor according to claim 14 is characterized in that, is formed with oil storage hole in described driven shaft bearing,
Be provided with the driven shaft oil duct on described driven shaft, described driven shaft oil duct is communicated with when described driven shaft rotates separably with described oil storage hole.
16. the variable valve lift driving device for motor according to claim 13 is characterized in that, described driven gear is the cardinal principle tooth sector.
17. the variable valve lift driving device for motor according to claim 13 is characterized in that, described pivotal axis comprises each interval and two sections of being connected with described driven shaft respectively.
18. the variable valve lift driving device for motor according to claim 13, it is characterized in that, described actuating mechanism also comprises return spring, described return spring is set on described pivotal axis, and an end of described return spring is buckled on described rocker arm body, flexibly described rocker arm body only is against on described camshaft mechanism.
19. the variable valve lift driving device for motor according to claim 1 is characterized in that, described actuating mechanism comprises:
Housing, the inner peripheral surface of described housing are provided with a plurality of spaced housing boss, and described housing boss radially extends towards the center of described housing; And
Rotor, described rotor are located in described housing rotationally and the central axis of described rotor overlaps with described adjustment spin axis, are provided with a plurality of rotor boss on the outer circumferential face of described rotor, wherein
Space between two described housing boss of arbitrary neighborhood is defined as and is isolated from each other and airtight the first oil pocket and the second oil pocket by being arranged on therebetween described rotor boss, and wherein the first oil pocket is positioned at the downstream side of the second oil pocket in the clockwise direction,
Described rotor is limited with the first oil duct and the second oil duct, and an end of described the first oil duct is connected with described the first oil pocket and an end of described the second oil duct is connected with described the second oil pocket;
Eccentric shaft, an end of described eccentric shaft is fixed on described rotor and the other end extends outward in described housing, and the central axis of described eccentric shaft overlaps with described rocking arm spin axis and is parallel to described adjustment spin axis.
20. the variable valve lift driving device for motor according to claim 19, it is characterized in that, be provided with elastic piece structure on the described adjustment spin axis of the distance of each a described rotor boss side surface far away, the inner peripheral surface of described elastic piece structure and described housing closely cooperates.
21. the variable valve lift driving device for motor according to claim 19 is characterized in that, described eccentric shaft rotates in predetermined angular range.
22. the variable valve lift driving device for motor according to claim 21, it is characterized in that, described housing comprises shell and end cap, one side of described shell opens wide to form shell aperture, described end cap is arranged on described shell and seals described shell aperture, be formed with one section on described shell around the circular arc restraining groove of described adjustment spin axis, the described the other end of wherein said eccentric shaft passes described circular arc restraining groove and extends outward.
23. the variable valve lift driving device for motor according to claim 22, it is characterized in that, described actuating mechanism also comprises: positioning component, described positioning component are located on one of them described rotor boss, are used for when assembling, described end cap and described rotor being positioned.
24. the variable valve lift driving device for motor according to claim 23 is characterized in that, described positioning component comprises:
Stop collar, described stop collar are embedded in the receiving bore that is formed on described rotor boss;
Stop screw, described stop screw wears by described stop collar and an end and only is against in spacing hole on described end cap internal surface, be formed with the hydraulic oil steering channel on the described internal surface of wherein said end cap, described hydraulic oil steering channel respectively with described the first and second oil pockets in one and described spacing hole be connected; And
Spacing elastic component, described spacing elastic component is located in described stop collar, and described spacing elastic component is arranged between the bottom surface of the other end of described stop screw and described receiving bore by elasticity.
25. the variable valve lift driving device for motor according to claim 22 is characterized in that, described actuating mechanism also comprises: connecting valve, described the first and second oil ducts all are connected with the oil pump of motor by described connecting valve.
26. a motor comprises described variable valve lift driving device as arbitrary in claim 1-25.
27. a vehicle is characterized in that, comprises motor as claimed in claim 26.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065235.4A CN103147818B (en) | 2013-02-28 | 2013-02-28 | Drive device with variable valve lift, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065235.4A CN103147818B (en) | 2013-02-28 | 2013-02-28 | Drive device with variable valve lift, engine and vehicle |
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| CN103147818A true CN103147818A (en) | 2013-06-12 |
| CN103147818B CN103147818B (en) | 2015-05-06 |
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| CN201310065235.4A Active CN103147818B (en) | 2013-02-28 | 2013-02-28 | Drive device with variable valve lift, engine and vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452846A (en) * | 2013-10-08 | 2013-12-18 | 李锦上 | Plug rod compressor |
| CN104420924A (en) * | 2013-09-10 | 2015-03-18 | 田丰果 | Continuously-adjustable adjustment method and device for valve lift of engine |
| CN105865960A (en) * | 2016-05-09 | 2016-08-17 | 华南理工大学 | Valve-valve seat ring friction pair wear test method and valve-valve seat ring friction pair wear test device |
| CN108757083A (en) * | 2018-05-25 | 2018-11-06 | 温州职业技术学院 | A kind of variable valve actuator for air of hydraulic-driven |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050229882A1 (en) * | 2002-05-17 | 2005-10-20 | Hideo Fujita | Valve train device for an engine |
| CN101059088A (en) * | 2006-04-21 | 2007-10-24 | 谢夫勒两合公司 | Rocking bar used for variable air valve mechanism |
| US20110048819A1 (en) * | 2008-11-25 | 2011-03-03 | Yamaha Hatsudoki Kabushiki Kaisha | Variable valve apparatus, and an engine apparatus and a transport machine having the same |
| CN102383891A (en) * | 2010-09-01 | 2012-03-21 | 现代自动车株式会社 | Variable valve lift apparatus |
-
2013
- 2013-02-28 CN CN201310065235.4A patent/CN103147818B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050229882A1 (en) * | 2002-05-17 | 2005-10-20 | Hideo Fujita | Valve train device for an engine |
| CN101059088A (en) * | 2006-04-21 | 2007-10-24 | 谢夫勒两合公司 | Rocking bar used for variable air valve mechanism |
| US20110048819A1 (en) * | 2008-11-25 | 2011-03-03 | Yamaha Hatsudoki Kabushiki Kaisha | Variable valve apparatus, and an engine apparatus and a transport machine having the same |
| CN102383891A (en) * | 2010-09-01 | 2012-03-21 | 现代自动车株式会社 | Variable valve lift apparatus |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420924A (en) * | 2013-09-10 | 2015-03-18 | 田丰果 | Continuously-adjustable adjustment method and device for valve lift of engine |
| CN103452846A (en) * | 2013-10-08 | 2013-12-18 | 李锦上 | Plug rod compressor |
| CN103452846B (en) * | 2013-10-08 | 2016-08-03 | 李锦上 | Plug rod compressor |
| CN105865960A (en) * | 2016-05-09 | 2016-08-17 | 华南理工大学 | Valve-valve seat ring friction pair wear test method and valve-valve seat ring friction pair wear test device |
| CN105865960B (en) * | 2016-05-09 | 2018-09-14 | 华南理工大学 | A kind of secondary abrasion test method of Valve-valve seat circle friction and device |
| CN108757083A (en) * | 2018-05-25 | 2018-11-06 | 温州职业技术学院 | A kind of variable valve actuator for air of hydraulic-driven |
| CN108757083B (en) * | 2018-05-25 | 2020-01-10 | 温州职业技术学院 | Hydraulically-driven variable valve mechanism |
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| CN103147818B (en) | 2015-05-06 |
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