CN204663605U - Air inlet valve and air outlet valve of internal combustion engine drive unit - Google Patents
Air inlet valve and air outlet valve of internal combustion engine drive unit Download PDFInfo
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- CN204663605U CN204663605U CN201520132386.1U CN201520132386U CN204663605U CN 204663605 U CN204663605 U CN 204663605U CN 201520132386 U CN201520132386 U CN 201520132386U CN 204663605 U CN204663605 U CN 204663605U
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Abstract
The utility model relates to a kind of air inlet valve and air outlet valve of internal combustion engine drive unit, comprising: regulating element (1); Motion transfer part (2); Driving element (3); Air inlet and exhaust valve control unit (4), described air inlet and exhaust valve control unit (4) has supporting surface (7); One end of described regulating element (1) is provided with working curved surface (5), and its other end is provided with hinging hole (6); Described motion transfer part (2) is resisted against on the described working curved surface (5) of described regulating element (1), the described supporting surface (7) of described air inlet and exhaust valve control unit (4) and described driving element (3), and is driven by described driving element (3).This device under the lift of combustion motor air inlet and exhaust valve carries out the prerequisite of the continuous adjustment between 0 ~ 100%, can realize air inlet valve and air outlet valve of internal combustion engine with the number of components of less participation campaign and is opening and closing.
Description
Technical field
The utility model relates to a kind of air inlet valve and air outlet valve of internal combustion engine drive unit, and this device comprises driving element and air inlet and exhaust valve control unit, and described air inlet and exhaust valve control unit is provided with supporting surface.
Background technique
For internal-combustion engine, owing to operating under partial load condition of being everlasting, coefficient of residual gas is higher, therefore how to improve engine combustion working stability, and pumping loss during reduction sub load, organizes combustion process fast, improves combustion efficiency just very important.Therefore, wish when part load engine by less valve lift, improve intake pressure difference, increase the airspeed by valve, increase turbulence intensity, improve velocity of propagation of flame and velocity of combustion, organize combustion process fast.And need to adopt larger valve lift when high engine speeds high load, farthest to reduce flow resistance, improve the fill factor of cylinder, meet power character demand during high engine speeds.
Except regulating the air inflow demand of motor, also there is the dynamics by strengthening miller cycle, strengthening internal egr amount, change effective compression ratio, improve combustion efficiency, realize part cylinder deactivation, realize low-temperature burning or HCCI burning to improve the fuel economy of motor and to reduce the demand of discharge of exhaust pollutant, and improve cold starting performance, realize the demands such as the commodity of the increase motors such as powerful motor brake.These demands can meet by lift range variable technology.
Chinese patent 200910203761.6 discloses a kind of drive unit, and this drive unit is used for the driving of air inlet valve and air outlet valve of internal combustion engine.This drive unit have employed an actuating mechanism, and actuating mechanism comprises a connecting rod and a crank.Movement transmit from cam can be given the rocking arm with actuating mechanism cooperating by this actuating mechanism.By regulating the initial position of the connecting rod in actuating mechanism, can the lift of combustion motor air inlet and exhaust valve regulate.
Obviously, according in the mechanism disclosed in Chinese patent application 200910203761.6, when opening air inlet valve and air outlet valve of internal combustion engine, whole actuating mechanism, namely connecting rod is kept in motion.This will cause the movement inertia of mechanism larger.For internal-combustion engine, on the bang path of motion, the movement inertia of any one parts or part is large, all means: system friction resistance is large, and system motion inertia is large, causes driving power large, causes the increase of oil consumption.
In addition, according to the drive unit disclosed in Chinese patent application 200910203761.6, although can the lift of combustion motor air inlet and exhaust valve regulate, but due to the mode of the lever ratio which employs adjusting rock arm mechanism, so, it is limited to the regulation range of lift, particularly can not realize the adjustment of zero lift.
Model utility content
The purpose of this utility model is to provide a kind of air inlet valve and air outlet valve of internal combustion engine drive unit, this device under the lift of combustion motor air inlet and exhaust valve carries out the prerequisite of the continuous adjustment between 0 ~ 100%, can reduce the number of components participating in air inlet valve and air outlet valve of internal combustion engine opening and closing process moving.
For realizing above-mentioned model utility object, providing a kind of air inlet valve and air outlet valve of internal combustion engine drive unit according to the utility model, comprising regulating element; Motion transfer part; Driving element; Air inlet and exhaust valve control unit, described air inlet and exhaust valve control unit has supporting surface; One end of described regulating element is provided with working curved surface, and its other end is provided with hinging hole; Described motion transfer part is resisted against on the described working curved surface of described regulating element, the described supporting surface of described air inlet and exhaust valve control unit and described driving element, and is driven by described driving element.
According to an aspect of the present utility model, described air inlet and exhaust valve control unit is a slender body, and its one end is provided with link, and the other end is provided with driving working surface, and the side between described air inlet and exhaust valve control unit two ends is provided with described supporting surface.
According to an aspect of the present utility model, described air inlet and exhaust valve control unit comprises drive part and adjustment portion, becomes the angle of 0 ° ~ 180 °, described adjustment portion is provided with described supporting surface between described drive part and described adjustment portion.
According to an aspect of the present utility model, described air inlet and exhaust valve control unit is an actuating post, and described actuating post is a hollow circular cylinder, is wherein provided with next door, and the top in described next door is provided with described supporting surface.
According to an aspect of the present utility model, described working curved surface comprises non-driven part and drive part, and described non-driven part is the arc surface concentric with described hinging hole.
According to an aspect of the present utility model, described drive part and described non-driven part rounding off, and described drive part is the curved surface being greater than the radius of described non-driven part to the distance at the described hinging hole center of described regulating element.
According to an aspect of the present utility model, described supporting surface is the arc surface concentric with described hinging hole.
According to an aspect of the present utility model, described motion transfer part is an axle, contacts and two ends and regulating element contact with air inlet and exhaust valve control unit in the middle part of it with driving element; Or centre is with the axle of convex portion, the convex portion in the middle of it and driving element against and two ends and regulating element contact with air inlet and exhaust valve control unit; Or one straightens journal axle, its two ends are respectively with the part that a diameter is identical, and the part that two diameters are identical contacts with control unit with regulating element, and the shaft portion between the part that diameter is identical contacts with driving element; Or one straightens journal axle, its Intermediate Gray convex portion and two ends are respectively with an identical end becoming a pair of diameter, and middle convex portion contacts with driving element, and two end part contact with control unit with regulating element.
According to an aspect of the present utility model, described motion transfer part is a rigid body, and its one end is provided with hinging hole, and the other end is circular; Or a rigid body, its two ends are respectively equipped with hinging hole, and one of them hinging hole is connected with a roller; Or an elongated rigid body, its one end is provided with hinging hole, for being connected with a roller.
Due to according in drive unit of the present utility model, non-driven part in the working curved surface of regulating element is the arc surface concentric with the hinging hole of regulating element one end, drive part is the curved surface that a distance to hinging hole center is greater than the radius of non-driven part, the supporting surface of control unit is also the arc surface concentric with the above-mentioned hinging hole of regulating element, therefore, in the driving process of driving element, when motion transfer part moves in the passage that above-mentioned two concentric arc surfaces are formed, motion transfer part gyration center is relative to regulating element gyration center----namely the distance at the center of hinging hole do not change, therefore motion transfer part can not make control unit swing, so at this moment air inlet valve and air outlet valve of internal combustion engine does not have lift, valve is not opened, when motion transfer part has crossed the separation of non-driven part and drive part, be subject to the restriction of drive part curved surface, motion transfer part can only change moving line, moves in the direction to the center away from hinging hole, thus promotes control unit swing and air inlet and exhaust valve is opened.As can be seen here, in the driving process of driving element, the circular arc passage that motion transfer part passes through is shorter, and the lift of air inlet valve and air outlet valve of internal combustion engine is larger, and when motion transfer part is not completely by circular arc passage, the lift of air inlet valve and air outlet valve of internal combustion engine reaches maximum; Otherwise, the circular arc passage that motion transfer part passes through is longer, the lift of air inlet valve and air outlet valve of internal combustion engine is less, when the circular arc passage long enough that motion transfer part passes through, even if driving element has completed the drive part that maximum drive amount motion transfer part can not touch the working curved surface of regulating element, control unit can not be subject to the promotion of motion transfer part completely.In other words, now the lift of air inlet valve and air outlet valve of internal combustion engine has been adjusted to zero.
It is evident that, drive unit of the present utility model only adopts the cooperation of the relative position of regulating element and motion transfer part, and the zero lift just achieving combustion motor air inlet and exhaust valve regulates.Relative to adopting several tens parts even to realize for this function in prior art, structure is very simple, reliably.
According to drive unit of the present utility model, with regard to regulating element, when the lift of combustion motor air inlet and exhaust valve regulates, regulating element is around its gyration center----be namely arranged at its one end hinging hole swing; And after adjustment process terminates, regulating element is fixed relative to its gyration center, retrains the movement locus of the motion transfer part that driven element drives thus, thus realize air inlet valve and air outlet valve of internal combustion engine according to the valve lift work regulated.Can find out, when air inlet valve and air outlet valve of internal combustion engine works, the part according to participating in drive unit of the present utility model moving is motion transfer part and air inlet and exhaust valve control unit.The element or the number of spare parts that participate in motion are far smaller than similar drive unit in prior art.Obviously, the number of elements owing to participating in motion falls sharply, so movement inertia is naturally little; The number of components participating in motion is few, and the friction pair in drive unit is few, so surface friction drag is little, transmission loss is few.
Compared with variable valve actuator for air of the prior art, the movement inertia of system can be reduced according to drive unit of the present utility model, reduce transmission loss, improve drive efficiency, reduce and drive energy consumption and driving power, thus indirectly reduce the oil consumption of this part.Owing to decreasing the part of system and reducing driving power, so the manufacture cost of entire system can be reduced.
Due to according in drive unit of the present utility model, the number of components participating in motion is few, and system dimension chain is short, so can improve system accuracy and control accuracy, system reliability is improved.
According to the utility model, owing to can regulate in the scope of 0 to 100% maximum lift of air inlet and exhaust valve, so can be optimized the performance of motor under more large-scale operating mode.Such as, when sub load, regulate the maximum lift of suction valve, realize the function strengthening the mixing of oil gas secondary; The maximum lift of adjustment valve, realizes adjusting cylinders effective compression ratio, realizes the function of miller cycle and HCCI burning; Because device of the present utility model can adopt independent cam but not whole camshaft carries out the adjustment of maximum lift, so in the motor of many suction valves, adjustable each suction valve is different maximum lift, realizes the function strengthening strength of vortex in cylinder.Therefore combustion efficiency and the thermal efficiency of internal-combustion engine be can improve by a larger margin, thus discharge, the reduction oil consumption of pollutant reduced by a larger margin.
In addition, according to the utility model, owing to can realize the adjustment of zero lift to air inlet and exhaust valve, namely in the operation process of internal-combustion engine, the maximum lift of air inlet and exhaust valve can be adjusted to the arbitrary position (comprising the zero lift of normally off) of 0 ~ 100% maximum lift, so, use device of the present utility model can realize the adjustment of combustion motor air inflow, therefore, it is possible to replace existing throttle valve device.In addition, use device of the present utility model can realize the adjustment of combustion motor air displacement, namely realize internal EGR function, therefore, it is possible to replace existing outside EGR device.Have again, because device of the present utility model is by independently cam but not whole camshaft carries out the adjustment of maximum lift, so in multi-cylinder engine, use device of the present utility model can carry out the operation of throttle down to partial cylinders, thus realize the function of part cylinder deactivation, therefore can also replace existing part deactivation apparatus.In addition, the whole cylinders of device of the present utility model to motor can be used to carry out the operation of throttle down, thus realize the motor brake function of superhigh power, therefore, it is possible to replace existing motor braking device, device such as exhaust auxiliary brake or eddy current retarder etc.
In sum, according to air inlet valve and air outlet valve of internal combustion engine device of the present utility model, large contribution can not only be made to energy-saving and emission-reduction, and the auxiliary device of existing motor and vehicle can also be replaced, greatly reduce the overall cost of motor and vehicle.
Accompanying drawing explanation
Fig. 1 (a) is for representing the schematic diagram according to the air inlet valve and air outlet valve of internal combustion engine drive unit of the utility model mode of execution; Fig. 1 (b) is for expression is according to the working principle of air inlet valve and air outlet valve of internal combustion engine drive unit of the utility model mode of execution and the schematic diagram of Principles of Regulation; Fig. 1 (c) is for representing the schematic diagram according to the lifting curve of the air inlet valve and air outlet valve of internal combustion engine drive unit of the utility model mode of execution; Fig. 1 (d) is for representing the stereogram according to the air inlet valve and air outlet valve of internal combustion engine drive unit of the utility model mode of execution.
Fig. 2 represents the schematic diagram according to another mode of execution of the present utility model, wherein represents that control unit is made up of two-part;
Fig. 3 represents the intention according to another mode of execution of the utility model, wherein represents that two-part angle of control unit is 180 °;
Fig. 4 represents according to another mode of execution of the present utility model, and regulating element is wherein the element in inverted hook shape;
Fig. 5 schematically shows another mode of execution according to drive unit of the present utility model, and wherein driving element is positioned at the opposite side of regulating element;
Fig. 6 represents that regulating element is made up of two parts in the mode of execution according to Fig. 5;
Two parts of the regulating element that Fig. 7 represents in Fig. 5 illustrated embodiment distribute point-blank mutually;
Fig. 8 schematically shows another mode of execution according to drive unit of the present utility model, wherein driving element be with motion transfer part against push rod, its motion mode is straight reciprocating motion, but not picture cam rotation;
Fig. 9 schematically shows another mode of execution according to drive unit of the present utility model, and wherein, the difference of the mode of execution represented with Fig. 1 (a) is only to replace control unit drive air inlet and exhaust valve with activating post;
Figure 10 is according to another mode of execution of the present utility model, which show a kind of mode of structure of motion transfer part;
Figure 11 is according to another kind of mode of execution of the present utility model, which show the mode of structure of the distortion of the motion transfer part shown in a kind of relative accompanying drawing 10;
Figure 12 is according to another kind of mode of execution of the present utility model, which show the mode of structure of another kind of motion transfer part.
Embodiment
Below for the utility model embodiment description involved by level, vertical, upper and lower, left and right all with accompanying drawing, especially accompanying drawing 1(a) shown in the embodiment that represents of meaning property.That is, the substantially horizontal in Fig. 1 (a) is the substantially horizontal in describing, and the Vertical direction in Fig. 1 (a) is the Vertical direction in describing, and in Fig. 1 (a), direction is upwards upper in describing, direction downward in Fig. 1 (a) be in describing under.Level in description, vertical, upper and lower, left and right only understand embodiment of the present utility model for convenience of clear.
Fig. 1 (a) illustrates an embodiment according to air inlet valve and air outlet valve of internal combustion engine drive unit of the present utility model, and Fig. 1 (d) is the stereogram schematically showing Fig. 1 (a) illustrated embodiment.In this embodiment, air inlet and exhaust valve control unit 4 is slender bodys.As shown in the figure, according to the present embodiment, air inlet and exhaust valve control unit 4 is the rocking arms that can rotate around its one end.The end, the rightmost side of air inlet and exhaust valve control unit 4 is also provided with a link 10.In the present embodiment, this link 10 is the hinged bulbs matched with the hydraulic pressure cylinder be arranged at below it.This is because have employed hydraulic pressure cylinder to eliminate according to the gap in drive unit of the present utility model between each part in present embodiment.Certainly can imagine, also can substitute hydraulic pressure cylinder herein with a simple swing hinge.When using swing hinge, the right part of air inlet and exhaust valve control unit 4 arranges corresponding hinging hole.According to the present embodiment, the right-hand member of air inlet and exhaust valve control unit 4 is hinged on the hinged bulb of hydraulic mechanism.The upside of air inlet and exhaust valve control unit 4 is provided with for cooperatively interacting the supporting surface 7 of work with motion transfer part 2, and supporting surface 7 is radiuses concentric with the gyration center 15 of regulating element 1 is R
2arc surface.
As shown in Fig. 1 (a), motion transfer part 2 is resisted against on the supporting surface 7 of air inlet and exhaust valve control unit 4, and can roll on this supporting surface 7.Meanwhile, in the present embodiment, driving element 3 is cams.The working surface of cam also contacts with motion transfer part 2, and in the course of the work, namely when cam rotates, actuation movement Transmission Part 2 correspondingly rolls at supporting surface 7.
According to this mode of execution of the present utility model, above-mentioned driving element 3, namely cam by its Movement transmit to motion transfer part 2, motion transfer part 2 under the cooperation of regulating element 1 the Movement transmit of cam to air inlet and exhaust valve control unit 4, air inlet and exhaust valve control unit 4 again by this Movement transmit to air inlet and exhaust valve.
Shown in Fig. 1 (a) according in this mode of execution of the present utility model, regulating element 1 is arranged on driving element 4, and namely its gyration center 15 is positioned on driving element 4.The other end of regulating element 1---on the lower end shown in figure---is provided with the working curved surface 5 of regulating element 1.As shown in Fig. 1 (a), the working curved surface 5 of regulating element 1 is at least made up of two-part, and one of them part is the radius R such as gyration center 15 grade of relative adjustment element 1
1non-driven part 8, its another part is the drive part 9 of relative gyration center 15 radius unequal, and drive part 9 is greater than the radius of non-driven part 8 to the distance of gyration center 15, drive part 9 and non-driven part 8 are round and smooth connections, and non-driven part 8 is expressed as Q with the separation of drive part 9.The shape of drive part 9 can design arbitrarily according to the needs of internal-combustion engine.Regulating element 1 utilizes diverse location on its working curved surface 5 to contact with motion transfer part 2, thus forms the adjustment of the lift of combustion motor air inlet and exhaust valve.The lift of air inlet and exhaust valve is regulated by regulating element 1.Obviously, the Curvature varying of the working curved surface 5 on regulating element 1, the directly adjusting size of impact to the lift of air inlet and exhaust valve.
As shown in Fig. 1 (a), the end, the rightmost side of air inlet and exhaust valve control unit 4 is also provided with a link 10.In the present embodiment, this link 10 is the hinged bulbs matched with the hydraulic pressure cylinder be arranged at below it.This is because have employed hydraulic pressure cylinder to eliminate according to the gap in drive unit of the present utility model between each part in present embodiment.Certainly can imagine, also can substitute hydraulic pressure cylinder herein with a simple swing hinge.When using swing hinge, the right part of air inlet and exhaust valve control unit 4 arranges corresponding hinging hole.
Below in conjunction with Fig. 1 (a), the working procedure of driving mechanism is elaborated.
In the present embodiment, using a cam as driving element 3, on the supporting surface 7 of driving element 4, reciprocating example is carried out to its actuation movement Transmission Part 2 and is described.
M in Fig. 1 (a) represents motor, and 12 represent the worm screw on motor shaft, and 13 represent the worm gear portion coordinated with worm screw be located on regulating element 1, and ECU represents electronic control unit.As an example of the mechanism for driving regulating element 1, the driving instruction sent by ECU in the utility model, drive worm screw 12 to rotate by motor M according to driving instruction, make it drive worm gear portion 13 to rotate, thus realize the position regulation of regulating element 1.
Cam as driving element 3 has base circle portion and lifting curve part.In the process that driving element 3 actuation movement Transmission Part 2 moves back and forth, when the base circle portion contact movement Transmission Part 2 of driving element 3, the rotation of driving element 3 cannot make motion transfer part 2 produce displacement.When the lifting curve part of driving element 3 contacts with motion transfer part 2, motion transfer part 2 driven element 3 drives and moves to illustrated left direction.When motion transfer part 2 does not touch drive part 9, because non-driven part 8 and supporting surface 7 are all the arc surfaces with gyration center 15 concentric of regulating element 1, therefore the radial motion that motion transfer part 2 can not be made to produce with gyration center 15 is axle center, the circular movement that only motion transfer part 2 to be made to produce with gyration center 15 be axle center, namely, the passage that motion transfer part 2 is formed along non-driven part 8 on regulating element 1 and supporting surface 7, driven element 3 drives and moves to illustrated left direction, the track at its center for the radius such as shown in Fig. 1 (a) be the circular arc of R.Therefore, the valve rod of air inlet and exhaust valve driving element 4 can not be made to produce downward motion, so can not be driven to open.Further, when motion transfer part 2 touches drive part 9, because drive part 9 to be greater than the radius of non-driven part 8 to the distance of center of rotation 15, so the radial motion that it is axle center that drive part 9 makes motion transfer part 2 produce with gyration center 15, thus to make it to depart from radius be the track of R.Therefore, driving element 4 can be made to produce downward motion, so the valve rod of air inlet and exhaust valve can be driven, valve be opened.
According to embodiment of the present utility model, motion transfer part 2 can have different forms.Such as, motion transfer part 2 at least can have following several form:
(1) motion transfer part 2 is axles, the intermediate portion of this root axle and driving element
3 contacts, two end portions contacts with control unit 4 with regulating element 1 respectively.Certainly, also can be that the two ends of axle contact with driving element 3, and intermediate portion contact with control unit 4 with regulating element 1.
(2) motion transfer part 2 is centre axles with convex portion, the convex portion in the middle of it and driving element 3 against and two ends contact with air inlet and exhaust valve control unit 4 with regulating element 1 respectively.
(3) motion transfer part 2 is one and straightens journal axle, its two ends are respectively with the part that a diameter is identical, the part that two diameters are identical contacts with control unit 4 with regulating element 1 respectively, and the shaft portion between the part that diameter is identical contacts with driving element 3.
(4) motion transfer part 2 is one and straightens journal axle, its Intermediate Gray convex portion
And two ends are respectively with an identical end becoming a pair of diameter, middle convex portion contacts with driving element 3, two end part contact with control unit 4 with regulating element 1 respectively, but in such an embodiment, the motion transfer part 2 of this form and the annexation of other parts and kinematic relation and upper a kind of form is identical.
The adjustment process of driving mechanism to the valve rod maximum lift of air inlet and exhaust valve is described in detail below in conjunction with Fig. 1 (b) and Fig. 1 (c).In Fig. 1 (c), vertical pivot Y represents air inlet and exhaust valve lift, and transverse axis X represents crank angle.The middle solid line of Fig. 1 (b) and dotted line show respectively the home position of regulating element 1 and the position after α angle adjustment.The maximum displacement left motion transfer part 2 being produced by the rotation of driving element 3 is L, and when regulating element 1 is shown in solid line during position, itself and motion transfer part 2 point of contact are P
1, when regulating element 1 turns over shown in dotted line during position after α angle, itself and motion transfer part 2 point of contact represented by dashed line are P
2, make motion transfer part 2 create the movement of distance for Hr in the vertical direction, make the valve rod travel of the air inlet and exhaust valve driven by motion transfer part 2 create the variable quantity Hv proportional with distance Hr thus, thus achieve the object of the lift changing air inlet and exhaust valve.
In fig. l (a), regulating element 1 just drops on the non-driven part 8 of working curved surface 5 and the point of interface Q of drive part 9 with the point of contact of motion transfer part 2, and now motion transfer part 2 is resisted against in the base circle portion of driving element 3 under the effect of Returnning spring.When regulating element 1 is in such position, the motion of the lifting curve part of driving element 3 just all can pass to driving element 4 by motion transfer part 2, thus make air inlet and exhaust valve produce maximum maximum lift, now the lifting curve of air inlet and exhaust valve is with the l in Fig. 1 (c)
qrepresent.
From the state shown in Fig. 1 (a), the driving instruction sent according to ECU by motor M, make regulating element 1 turn over a corresponding angle clockwise by worm screw 12 and worm gear portion 13, the motion transfer part 2 when the base circle portion of driving element 3 contacts with motion transfer part 2 is contacted with the some M in the non-driven part 8 of regulating element 1.When regulating element 1 is in such position, when driving element 3 actuation movement Transmission Part 2 moves along the supporting surface 7 on control unit 4, first motion transfer part 2 is move along the path by the non-driven part 8 of regulating element 1 and supporting surface 7 defined of control unit 4, now, the circular movement that it is axle center that motion transfer part 2 only can produce with gyration center 15, and the radial motion that can not to produce with gyration center 15 be axle center, air inlet and exhaust valve air inlet and exhaust valve control unit 4 just can not be driven to produce downward motion, so can not be driven to open.Then, when motion transfer part 2 has exceeded the non-driven part 8 of regulating element 1 and the separation Q of drive part 9 and has contacted with drive part 9, the path deviation that motion transfer part 2 will specify according to drive part 9 is with gyration center 15 for the circumference in axle center and produce radial motion, thus drived control element 4 makes air inlet and exhaust valve open to lower swing.In this course, only some passes to control unit 4 by motion transfer part 2 in the motion of the lifting curve part of driving element 3, thus the maximum lift of air inlet and exhaust valve is reduced, and now the lifting curve of air inlet and exhaust valve is with the l in Fig. 1 (c)
mrepresent.
From the state shown in Fig. 1 (a), the driving instruction sent according to ECU by motor M, make regulating element 1 turn over a corresponding angle clockwise by worm screw 12 and worm gear portion 13, the motion transfer part 2 when the base circle portion of driving element 3 contacts with motion transfer part 2 is contacted with the some N in the non-driven part 8 of regulating element 1.In the operation process of driving element 3, until driving element 3 completes its maximum drive amount L, motion transfer part 2 all only contacts the non-driven part 8 of regulating element 1, and does not contact drive part 9.Now, as mentioned above, the circular movement that it is axle center that motion transfer part 2 only can produce with gyration center 15, and the radial motion that can not to produce with gyration center 15 be axle center, therefore, motion transfer part 2 can not produce downward motion by drived control element 4, so air inlet and exhaust valve can not be driven to open.The lift of air inlet and exhaust valve is at this moment zero, and namely air inlet and exhaust valve is in normally off, which achieves the adjustment of the zero lift of air inlet and exhaust valve, and now the lifting curve of air inlet and exhaust valve is with the l in Fig. 1 (c)
npoint represents.
Not hard to imagine, when regulating element 1 is adjusted to make motion transfer part 2 and the point of contact of regulating element 1 be in a M and some N between position time (this adjustment is carry out when the base circle portion of driving element 3 contacts with motion transfer part 2 equally), the lifting curve of air inlet and exhaust valve will be arranged in the l of Fig. 1 (c)
mand l
nbetween, equally, when regulating element 1 is adjusted to make motion transfer part 2 and the point of contact of regulating element 1 be in a Q and some M between position time (this adjustment is carry out when the base circle portion of driving element 3 contacts with motion transfer part 2 equally), the lifting curve of air inlet and exhaust valve will be arranged in the l of Fig. 1 (c)
qand l
mbetween.As can be seen here, according to drive unit of the present utility model, the lift that can realize combustion motor air inlet and exhaust valve carries out uninterruptedly regulating continuously between 0 ~ 100%.
Although above-mentioned explanation is all that the position of carrying out regulating element 1 when the base circle portion of driving element 3 contacts with motion transfer part 2 adjusts, but this is just for the ease of understanding and illustrating and the condition of supposition, in actual applications, be unrestricted to the adjustment of the position of regulating element 1, in the operation process of motor, carry out the position adjustment of regulating element 1 at any time.
In sum, as long as the position of adjustment regulating element 1, just significantly can regulate the maximum lift of air inlet and exhaust valve according to device of the present utility model, regulation range is 0 to 100% of maximum lift.This just expands the optimization space of engine performance widely, can reduce the discharge of oil consumption and pollutant further.
Owing to can realize the adjustment of zero lift to air inlet and exhaust valve, namely in the operation process of internal-combustion engine, the maximum lift of air inlet and exhaust valve can be adjusted to the arbitrary position (comprising the zero lift of normally off) of 0 ~ 100% maximum lift, so, use device of the present utility model can realize the adjustment of combustion motor air inflow, therefore, it is possible to replace existing throttle valve device.
In addition, use device of the present utility model can realize the adjustment of combustion motor air displacement, namely realize internal EGR function, therefore, it is possible to replace existing outside EGR device.
Have again, because device of the present utility model is by independently cam but not whole camshaft carries out the adjustment of maximum lift, so in multi-cylinder engine, use device of the present utility model can carry out the operation of throttle down to partial cylinders, thus realize the function of part cylinder deactivation, therefore can also replace existing part deactivation apparatus.
In addition, the whole cylinders of device of the present utility model to motor can be used to carry out the operation of throttle down, thus realize the motor brake function of superhigh power, therefore, it is possible to replace existing motor braking device, device such as exhaust auxiliary brake or eddy current retarder etc.
Fig. 2 schematically illustrates according to another mode of execution of the present utility model.In the present embodiment, air inlet and exhaust valve control unit 4 is clamp forks, is made up of two-part, i.e. drive part 14 and adjustment portion 13.As can be seen from the figure, drive part 14 and adjustment portion 13 are mutually at an angle.In the present embodiment, the drive part 14 of air inlet and exhaust valve control unit 4 and the intersection of adjustment portion 13 are the hinged support point of air inlet and exhaust valve control unit 4, and form the gyration center of two parts thus.Angle between drive part 14 and adjustment portion 13 can change between 0 ° ~ 180 °.In this embodiment, although driving element 4 comprises two parts, these two parts are just in order to describe the convenient division functionally done.In fact, according to the working principle of drive unit of the present utility model, these two-part should be rigidly connected driving elements in other words 4 itself is a rigid body be made up of two parts being in several angle.
In actual applications, when driving element is positioned at the oblique upper of air inlet and exhaust valve, adopts the structure of present embodiment, the change to motor can be reduced, reduce costs.
Schematically illustrate further in Fig. 3 and mutually distributing point-blank according to two parts of air inlet and exhaust valve control unit 4 in this mode of execution of the present utility model, namely angle is between the two 180 °.Now, do not change according to the working principle of drive unit of the present utility model and function, the parts thereof top from the figure shown in Fig. 1 (a) He Fig. 1 (b) just forming this device transforms to the below shown in Fig. 3.Present embodiment is compared with Fig. 1 (b) illustrated embodiment with Fig. 1 (a), and the shape of air inlet and exhaust valve control unit 4 there occurs change, namely from a slender body, becomes the slender body of a centre with support hinge hole.
In actual applications, when motor adopts the rocking arm of intermediate support, adopt the structure of present embodiment, the change to motor can be reduced, reduce costs.
Fig. 4 illustrates according to another mode of execution of the present utility model.In this embodiment, for regulating the shape of regulating element 1 in an inverted in the drawings hook of air inlet valve and air outlet valve of internal combustion engine lift.In this embodiment, for being arranged on the inner side of described hook with the cooperatively interact working curved surface 5 of work of motion transfer part 2, and the gyration center of regulating element 1 also correspondingly arranges the downside of air inlet and exhaust valve control unit 4 in the drawings.In this embodiment, the working principle realizing the utility model object does not change, and just the shape of regulating element 1 is different from aforementioned embodiments with position.
In actual applications, when upper position of engine limited space, adopt the structure of present embodiment, degrees of freedom during engine design can be expanded.
Fig. 5 to 7 illustrates the another kind of mode of execution according to drive unit of the present utility model.In this embodiment, driving element 3(and cam), Relative vertical direction, the position specular of mode of execution that represents of the position relationship of regulating element 1 and motion transfer part 2 and Fig. 2 to 4.No matter be that driving element 3 relative adjustment element 1 arranges on the left of it or right side, the working principle according to drive unit of the present utility model does not all change.Therefore, the function forming each component of this device does not change.
Fig. 8 illustrates according to another kind of mode of execution of the present utility model.Wherein, driving element 3 is the push rods that can move back and forth.This root push rod directly contacts with motion transfer part 2 and against thereon.When left direction moves push rod in the drawings, just promote motion transfer part 2 and be moved to the left, thus drive air inlet and exhaust valve control unit 4 to lower swing, final promotion air inlet valve and air outlet valve of internal combustion engine displacement of valve rod, opens air inlet and exhaust valve.Subsequently, the thrust acted on push rod is cancelled, and under the effect of the spring that air inlet and exhaust valve control unit 4 is arranged on Returnning spring and air inlet and exhaust valve, in figure, right side is mobile, recovers its initial position.Complete one thus and drive circulation.
Fig. 9 illustrates another kind of mode of execution.In the present embodiment, air inlet and exhaust valve control unit 4 is actuating posts on a valve rod being arranged on air inlet valve and air outlet valve of internal combustion engine or is referred to as mechanical tappets.Activate the cylindrical body that post is a hollow.As shown in the figure, in this hollow circular cylinder, be provided with next door 16, form the hollow cavity 17 closed an one end thus.The top of this hollow cavity 17 is provided with the supporting surface 7 for support motion Transmission Part 2.As mentioned above, this supporting surface 7 is also the arc surface concentric with the gyration center 15 of regulating element 1.In the present embodiment, the working principle of drive unit does not still change, and just the shape of air inlet and exhaust valve control unit 4 changes, and namely instead of the slender body shape adopted in other mode of executions with an actuating post.The advantage of this structure is that structure is compact further, takes up room little.
In actual applications, when motor adopts the air inlet and exhaust valve mechanism of mechanical tappets, adopt the structure of present embodiment, the change to motor can be reduced, reduce costs.
Figure 10 is according to another kind of mode of execution of the present utility model.Which show motion transfer part 2 be an one end with hinging hole, and the other end is that all-in-one-piece diameter own becomes large end with element body.In this embodiment, be provided with according to driving element 3 of the present utility model in the hinging hole of motion transfer part 2, driving element 3 is eccentric shafts in the present embodiment.After regulating element 1 is adjusted to precalculated position, just in the working procedure of internal-combustion engine, keep motionless.In the working procedure of internal-combustion engine, when eccentric shaft turns, whole motion transfer part 2 is driven to move.Because motion transfer part 2 has diameter become large one end between regulating element 1 and control unit 4, when regulating element 1 is motionless, the motion of motion transfer part 2 just makes control unit 4 move thereupon.Finally open or close air inlet valve and air outlet valve of internal combustion engine.
Figure 11 illustrates according to another kind of mode of execution of the present utility model.Its basic structure and Figure 10 illustrated embodiment similar, just the end of motion transfer part 2 arranges a rolling element, becomes large end with the diameter in this alternative Figure 10 illustrated embodiment.The frictional force of this structure is obviously lower.
Figure 12 illustrates according to another kind of mode of execution of the present utility model.Mode of execution shown in the structure of this mode of execution and Fig. 8 is similar, and the one end being motion transfer part 2 is wherein connected with roller by hinged, instead of directly acts on roller.
Claims (9)
1. an air inlet valve and air outlet valve of internal combustion engine drive unit, comprises regulating element (1); Motion transfer part (2); Driving element (3); Air inlet and exhaust valve control unit (4), described air inlet and exhaust valve control unit (4) has supporting surface (7); It is characterized in that, one end of described regulating element (1) is provided with working curved surface (5), and its other end is provided with hinging hole (6); Described motion transfer part (2) is resisted against on the described working curved surface (5) of described regulating element (1), the described supporting surface (7) of described air inlet and exhaust valve control unit (4) and described driving element (3), and is driven by described driving element (3).
2. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 1, it is characterized in that, described air inlet and exhaust valve control unit (4) is a slender body, its one end is provided with link (10), the other end is provided with and drives working surface (11), and the side between described air inlet and exhaust valve control unit (4) two ends is provided with described supporting surface (7).
3. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 1, it is characterized in that, described air inlet and exhaust valve control unit (4) comprises drive part (14) and adjustment portion (13), become the angle of 0 ° ~ 180 ° between described drive part (14) and described adjustment portion (13), described adjustment portion (13) is provided with described supporting surface (7).
4. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 1, it is characterized in that, described air inlet and exhaust valve control unit (4) is an actuating post, and described actuating post is a hollow circular cylinder, wherein be provided with next door, the top in described next door is provided with described supporting surface (7).
5. according to the air inlet valve and air outlet valve of internal combustion engine drive unit one of Claims 1-4 Suo Shu, it is characterized in that, described working curved surface (5) comprises non-driven part (8) and drive part (9), and described non-driven part (8) is the arc surface concentric with described hinging hole (6).
6. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 5, it is characterized in that, described drive part (9) and described non-driven part (8) rounding off, and described drive part (9) is the curved surface being greater than the radius of described non-driven part (8) to the distance at described hinging hole (6) center of described regulating element (1).
7. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 1, is characterized in that, described supporting surface (7) is the arc surface concentric with described hinging hole (6).
8. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 1, is characterized in that, described motion transfer part (2) is an axle, contacts and two ends and regulating element (1) contact with air inlet and exhaust valve control unit (4) in the middle part of it with driving element (3); Or centre is with the axle of convex portion, the convex portion in the middle of it and driving element (3) against and two ends and regulating element (1) contact with air inlet and exhaust valve control unit (4); Or one straightens journal axle, its two ends are respectively with the part that a diameter is identical, and the part that two diameters are identical contacts with control unit (4) with regulating element (1), and the shaft portion between the part that diameter is identical contacts with driving element (3); Or one straightens journal axle, its Intermediate Gray convex portion and two ends are respectively with an identical end becoming a pair of diameter, and middle convex portion contacts with driving element (3), and two end part contact with control unit (4) with regulating element (1).
9. air inlet valve and air outlet valve of internal combustion engine drive unit according to claim 1, is characterized in that, described motion transfer part (2) is a rigid body, and its one end is provided with hinging hole, and the other end is circular; Or a rigid body, its two ends are respectively equipped with hinging hole, and one of them hinging hole is connected with a roller; Or an elongated rigid body, its one end is provided with hinging hole, for being connected with a roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132386.1U CN204663605U (en) | 2015-03-09 | 2015-03-09 | Air inlet valve and air outlet valve of internal combustion engine drive unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132386.1U CN204663605U (en) | 2015-03-09 | 2015-03-09 | Air inlet valve and air outlet valve of internal combustion engine drive unit |
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| CN204663605U true CN204663605U (en) | 2015-09-23 |
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| CN201520132386.1U Expired - Fee Related CN204663605U (en) | 2015-03-09 | 2015-03-09 | Air inlet valve and air outlet valve of internal combustion engine drive unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895636A (en) * | 2015-03-09 | 2015-09-09 | 常州嵘驰发动机技术有限公司 | Intake and vent valve driving device of internal combustion engine |
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2015
- 2015-03-09 CN CN201520132386.1U patent/CN204663605U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895636A (en) * | 2015-03-09 | 2015-09-09 | 常州嵘驰发动机技术有限公司 | Intake and vent valve driving device of internal combustion engine |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20210309 |