CN103758598A - Air distribution mechanism for engine and vehicle comprising same - Google Patents
Air distribution mechanism for engine and vehicle comprising same Download PDFInfo
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- CN103758598A CN103758598A CN201310746106.1A CN201310746106A CN103758598A CN 103758598 A CN103758598 A CN 103758598A CN 201310746106 A CN201310746106 A CN 201310746106A CN 103758598 A CN103758598 A CN 103758598A
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Abstract
The invention discloses an air distribution mechanism for an engine and a vehicle comprising same. The air distribution mechanism comprises an air valve mechanism, a rocker arm assembly, a first roller, a second roller, a first cam shaft, a second cam shaft, a connecting arm and a phase position adjusting mechanism which is used for adjusting relative phase positions of the first cam shaft and the second cam shaft; the bottom of the rocker arm assembly is provided with a driving profile surface; the driving profile surface is suitable for driving an air valve of the air valve mechanism to move along the direction which is parallel to the air valve central line; the first roller and the second roller are arranged on the rocker arm assembly in a pivot rotation mode; the first cam shaft is provided with a first cam and the second cam shaft is provided with a second cam; the first cam is abut against the first roller and the second cam is abut against the second roller; a first end of the connecting arm is connected with the rocker arm assembly in a pivot rotation mode; a second end of the connecting arm is arranged on an engine body group of the engine in a pivot rotation mode. The air distribution mechanism for the engine has the advantages of achieving opening of the air valve for a second time, meanwhile prolonging the continuous time for air valve opening and being simple in structure and few in part.
Description
Technical field
The present invention relates to automobile construction field, especially relate to a kind of distribution device for motor and there is its vehicle.
Background technique
The distribution device of motor is for driving the switching of valve, and its port timing is the local optimum based on a certain narrow and small condition range of motor and determining generally, immobilize in the course of the work, and valve motion rule is determined by cam profile completely.But because cam profile is single, can not adjust valve motion rule according to motor actual conditions conditions of demand, can not the different operating conditions of simultaneous adaptation motor, oil consumption is higher, discharges poor, be unfavorable for improving the power performance of motor simultaneously, and general lift range variable technology can only change valve opening maximum lift, shifts gears more single, and complex structure, component are many, control loaded down with trivial details.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of above-mentioned technical problem of the prior art.
For this reason, one object of the present invention is to propose a kind of distribution device for motor, and this distribution device can be realized the secondary opening of valve, can also extend the lasting time of valve opening simultaneously, and simple in structure, and component are few.
Another object of the present invention is to propose a kind of vehicle with above-mentioned distribution device.
The distribution device for motor according to the embodiment of the present invention, comprising: valve mechanism; Rocker arm assembly, the substructure of described rocker arm assembly has driving profile, and described driving profile is suitable for driving the valve of described valve mechanism to move along the direction that is parallel to valve center line; The first roller and the second roller, described the first roller and described the second roller are all located on described rocker arm assembly pivotly; The first camshaft and the second camshaft, described the first camshaft has the first cam and described the second camshaft has the second cam, and described the first cam is against described the first roller and described the second cam against described the second roller; Link arm, the first end of described link arm is connected pivotly with described rocker arm assembly, and the second end of described link arm is located in the body group of described motor pivotly; And for regulating the phase-regulating mechanism of described the first camshaft and described the second camshaft relative phase.
According to the distribution device for motor of the embodiment of the present invention, can realize the object of secondary opening of air valve and the increase of valve opening duration, when realizing secondary opening of air valve, can realize scavenging function or improve internal EGR, simultaneously simpler, compact according to its rocker arm assembly of the distribution device of the embodiment of the present invention, component are few, and cost is low.
In addition, according to the distribution device for motor of the embodiment of the present invention, can also there is following additional technical feature:
According to some embodiments of the present invention, described rocker arm assembly comprises:
Main body portion and drive portion, the top of described main body portion is provided with described the first roller, and the both sides of described main body portion are respectively equipped with described the second roller, and described drive portion is located at the bottom of described main body portion.
According to some embodiments of the present invention, described main body portion comprises base portion, the first and second side plates, described the first and second side plates are spaced apart from each other vertically, described the first roller is located between described the first and second side plates pivotly by the first bearing pin, and the both sides of described base portion are respectively provided with described second roller and two the second rollers of described base portion and this are connected by the second bearing pin.
According to some embodiments of the present invention, the bottom surface of described drive portion is that cambered surface is to form described driving profile, the both sides of described driving profile are respectively arranged with the first blocked part, and the top of described valve is folded between the first blocked part of respective drive profile both sides.
According to some embodiments of the present invention, the two ends of described driving profile are respectively arranged with the second blocked part, and the top that described the second blocked part is suitable for the corresponding valve of backstop is to prevent this valve and corresponding driving profile slippage.
According to some embodiments of the present invention, described main body portion, described drive portion is one-body molded and described drive portion on be provided with loss of weight portion, in described loss of weight portion, be provided with reinforcement structure.
According to some embodiments of the present invention, described drive portion is two and being axially spaced apart from each other along described the first and second camshafts, described in each, the outside of two of rocker arm assembly drive portions is respectively arranged with a described link arm, the first end of described link arm is connected with corresponding drive portion pivotly by the first link arm bearing pin, and the other end of described link arm is connected with body group pivotly by the second link arm bearing pin.
According to some embodiments of the present invention, described link arm is configured to oblong flat board.
According to some embodiments of the present invention, described rocker arm assembly comprises:
Two rocking arm portions and middle arm portions, described two rocking arm portions are located at respectively the two ends of described middle arm portions, and described two rocking arm portions are oppositely arranged and being axially spaced apart from each other along described the first and second camshafts.
According to some embodiments of the present invention, described rocking arm portion also comprises: drive portion, and described drive portion is located at the bottom of rocking arm portion described in each, and described drive portion is configured to laminar body and bottom surface is that cambered surface is to form described driving profile.
According to some embodiments of the present invention, the two ends of described middle arm portions are respectively arranged with described the first roller and described middle arm portions is connected by the first bearing pin with these two first rollers, and described the second roller is located between described two rocking arm portions pivotly by the second bearing pin.
According to some embodiments of the present invention, the outside of described two rocking arm portions is respectively arranged with a described link arm, the first end of described link arm is connected with corresponding described rocking arm portion pivotly by the first link arm bearing pin, and the second end of described link arm is connected with body group pivotly by the second link arm bearing pin.
According to some embodiments of the present invention, described distribution device also comprises:
Valve rocker and hydraulic tappet, on described valve rocker, be provided with valve rocker roller, the top of described valve coordinates with one end of described valve rocker, and described hydraulic tappet coordinates with the other end of described valve rocker, and described driving profile is resisted against on described valve rocker roller.
According to some embodiments of the present invention, described distribution device also comprises: Returnning spring, described Returnning spring comprise first end, the second end, intermediate portion and be connected to described first end and described intermediate portion between first volume pars convoluta and be connected to described the second end and described intermediate portion between volume Two pars convoluta, described intermediate portion is flexibly pressed in described middle arm portions, and described first end and described the second end flexibly compress respectively described two rocking arm portions.
According to some embodiments of the present invention, described phase-regulating mechanism is phase discriminator.
According to the vehicle of the embodiment of the present invention, also comprise according to the distribution device for motor in the above embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the stereogram of distribution device according to an embodiment of the invention;
Fig. 2 is the enlarged view that Fig. 1 centre circle shows D portion;
Fig. 3 is the stereogram of distribution device in accordance with another embodiment of the present invention;
Fig. 4 is the side view of distribution device shown in Fig. 3;
Fig. 5 is the rocker arm assembly of distribution device shown in Fig. 3 and the explosive view of link arm.
Embodiment
Describe embodiments of the invention below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining 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 ", " longitudinally ", " 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 " be only for describing object, 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 otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.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 otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature 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 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 First Characteristic level height is less than Second Characteristic.
The body group of motor is the support of motor, is the matrix of connecting rod, distribution device and the assembling of each system.In related domain, usually, body group is mainly comprised of cylinder block, cylinder head, cylinder head gasket and oil sump etc., oil sump is generally located at the bottom of cylinder block, cylinder head is located at the top of cylinder block, cylinder head gasket is located between the end face of cylinder block and the bottom surface of cylinder head, for sealing the gap between the two.
Cylinder head forms firing chamber together with cylinder with piston head, the top of firing chamber has suction port and relief opening, and the valve of valve mechanism is located in cylinder cap and sealing suction port and relief opening.For existing general motor, adopt the two valve forms of entering scene 2 more, minority also has the valve form that adopts one-in-and-one-out or three to enter scene 2.
For same motor, generally all there is multiple different operating mode, such as low speed small load condition, high speed high load working condition etc., when motor is under different operating modes, motor externally moment of torsion and the power of output is different, the content of the harmful gas of motor discharge is simultaneously also different, and the distribution device of motor, according to the requirement of the work cycle of carrying out in each cylinder and firing order, regularly opens and closes intake valve and exhaust valve.
Usually, distribution device can regulate the lift amount of valve, but regulative mode is single, can not meet well usage requirement.According to the distribution device of the embodiment of the present invention, can realize the secondary opening of valve, opening time that simultaneously also can proper extension valve, regulative mode is various, thereby meets better the requirement of different operating modes.
Being appreciated that can be for driving into the valve event of gas side according to the distribution device of the embodiment of the present invention, can certainly be for driving the valve event of exhaust side, or be used in air inlet side and exhaust side to drive corresponding valve event simultaneously.Preferably, according to the distribution device of the embodiment of the present invention, for driving the valve event of exhaust side, in the following description, take this distribution device is example for driving the valve of exhaust side.
Below with reference to Fig. 1-Fig. 5, describe in detail according to the distribution device 100 for motor of the embodiment of the present invention.
According to the distribution device 100 of the embodiment of the present invention, can comprise valve mechanism 1, rocker arm assembly 2, the first roller 31 and the second roller 32, the first camshaft 41 and the second camshaft 42, link arm 5 and phase-regulating mechanism (scheming not shown).
Wherein, valve mechanism 1 has been prior art, and known by those skilled in the art, for example valve mechanism 1 can comprise valve 11, valve 11 can move back and forth up and down to open or close along the center line of valve 11 suction port or the relief opening of firing chamber in valve guide bushing, for these, can adopt the part of identical setting with prior art, be not described in detail here.
As shown in Figure 2 and Figure 5, the substructure of rocker arm assembly 2 has the profile 231 of driving, drives profile 231 to be suitable for driving valve 11 to move along the direction that is parallel to valve 11 center lines, and driving profile 231 can be boot last face, but is not limited to this.Should be appreciated that those skilled in the art can be according to actual needs and flexible design drives the concrete line style of profile 231, be not limited to above-mentioned boot last face.
The first roller 31 and the second roller 32 are all located on rocker arm assembly 2 pivotly, that is to say, the first roller 31 is located on rocker arm assembly 2 and can pivotable with respect to rocker arm assembly 2, and the second roller 32 is located on rocker arm assembly 2 and can pivotable with respect to rocker arm assembly 2.
As Figure 1-Figure 4, the first camshaft 41 and the second camshaft 42 be arranged in parallel, the first camshaft 41 and the common rocker arm assembly 2 that drives of the second camshaft 42.The first camshaft 41 has that the first cam 411, the second camshafts 42 have the second cam 421, the first cams 411 and the second cam 421 can be fitted in respectively on corresponding axle.According to some embodiments of the present invention, each in the first cam 411 and the second cam 421 all has large basic circle (the A section in Fig. 4), little basic circle (the B section in Fig. 4) and is connected to the changeover portion (the C section in Fig. 4) between large basic circle and little basic circle, but be not limited to this, for a person skilled in the art, can be according to actual needs and the molded line of adaptive settings cam.
As Figure 1-Figure 4, the first cam 411 is against the first roller 31 and the second cam 421 against the second roller 32, thus when the first camshaft 41 and the second camshaft 42 rotation, the large basic circle of the first cam 411, little basic circle and changeover portion can contact with the first roller 31 respectively, similarly, the large basic circle of the second camshaft 42, little basic circle and changeover portion can contact with the second roller 32 respectively, when the diverse location of respective cams contacts with corresponding roller, the lift amount of rocker arm assembly 2 action rear driving valves 11 can change.
For example, when the large basic circle of two kinds of cams (i.e. the first cam 411 and the second cam 421) contacts with corresponding roller (i.e. the first roller 31 or the second roller 32), the lift amount of valve 11 can be maximum.While existing the little basic circle of at least one cam to contact with corresponding roller in two kinds of cams, valve 11 can be in closed condition, and the lift amount of valve 11 is minimum.And the changeover portion of two clock cams contact with corresponding roller or one for changeover portion, another is when contact with corresponding roller for large basic circle, valve 11 lift amount can be between zero lift and maximum lift.But, be to be understood that, the present invention is not limited to this, for a person skilled in the art, reading on the basis of specification content disclosed herein molded line that obviously can the above-mentioned two kinds of cams of flexible design, when the position contacting with corresponding roller at two kinds of cam profiles changes, the lift amount of valve 11 also can adaptations, this for a person skilled in the art, should be hold intelligible.
The first end of link arm 5 (F end in Fig. 5) is connected pivotly with rocker arm assembly 2, and the second end of link arm 5 (the E end in Fig. 5) is located in the body group of motor pivotly.Adopt link arm 5 structures can limit the movement locus of rocker arm assembly 2, the while can keep the stability of rocker arm assembly 2 well, and simple in structure.
Here, need explanation a bit, in related domain, body group mainly comprises the parts such as cylinder block, cylinder head, cylinder head gasket and oil sump, but in the present invention, body group should be made broad understanding, can be understood as this body group and not only comprises the included parts of above-mentioned traditional sense upper machine body group, can also comprise some attached assemblys etc.For example, in superincumbent description, " the second end of link arm 5 is located in the body group of motor pivotly ", the second end that can be understood as link arm 5 directly pivotly (for example, by the second link arm bearing pin 52) is located at body group as in cylinder head, or can be fixedly installed intermediate member in cylinder head, the second end of link arm 5 is located on this intermediate member pivotly, and to can be understood as be a part for body group for the intermediate member here.
Phase-regulating mechanism is for regulating the relative phase of the first camshaft 41 and the second camshaft 42, thus the relative phase of change the first cam 411 and the second cam 421.According to one embodiment of present invention, phase-regulating mechanism can be phase discriminator, phase discriminator can be single rotor phase discriminator, only has a rotor, rotor can be connected with one of second camshaft 42 with the first camshaft 41, to regulate this camshaft phase place of another camshaft relatively, is to be understood that, it has been prior art that phase discriminator regulates the relative phase of two camshafts, the specific works principle of the concrete structure of phase discriminator, phase discriminator and adjustment process is not made to specified otherwise here.
Be appreciated that, owing to driving homonymy valve 11 to adopt two camshafts (i.e. the first camshaft 41 and the second camshaft 42) according to the distribution device 100 of the embodiment of the present invention, therefore according to the distribution device 100 of the embodiment of the present invention, by phase discriminator, regulate after the relative phase of these two camshafts, can realize the secondary opening of valve 11 and extend 11 opening times of valve.
Particularly, the first camshaft 41 and the second camshaft 42 can drive by bent axle and the intermediate transmission parts of motor, this first camshaft 41 and the second camshaft 42 can be realized oppositely (example explanation, can certainly be in the same way) synchronous rotary (being prior art), for example can realize by the identical meshed transmission gear of the number of teeth, but be not limited to this.In the process of the first camshaft 41 and the second camshaft 42 counterrotatings, there will be the large basic circle of two kinds of above-mentioned cams all to contact with corresponding roller, now the lift amount of valve 11 can be maximum, the situation that simultaneously also there will be a kind of large basic circle of cam and the changeover portion of corresponding roller contact and another kind of cam to contact with corresponding roller, now the relative maximum lift of valve 11 lift amount reduces to some extent, valve 11 has breakdown action twice like this, wherein once be opened into maximum lift, the relative maximum lift of lift of another this unlatching reduces, realized the object of valve 11 secondary openings.
Further, when the interval of valve 11 secondary openings is larger, the valve-closing that approaches air inlet side as valve 11 secondary openings of exhaust side constantly time, can realize scavenging function.If the 11 secondary opening times of valve hour, the valve opening that approaches air inlet side as valve 11 secondary openings of exhaust side constantly time, can be realized the EGR of larger inside.In the concrete time lag of controlling valve 11 secondary openings, can realize by adaptability design cam profile, but be not limited to this.
At phase discriminator, regulate after the relative phase of two camshafts, the relative phase of the first cam 411 and the second cam 421 changes, now can realize and increase valve 11 open-interval objects, for example, after having regulated the relative phase of two camshafts, two situations that cams there will be lasting large basic circle to contact with corresponding roller, now can greatly extend valve 11 and open the endurance.
Thus, according to the distribution device 100 for motor of the embodiment of the present invention, can realize the object of valve 11 secondary openings and valve 11 unlatching durations increases, when realizing valve 11 secondary opening, can realize scavenging function or improve internal EGR, simultaneously simpler, compact according to distribution device 100 its rocker arm assemblies 2 of the embodiment of the present invention, component are few, and cost is low.
Below with reference to Fig. 1-Fig. 2 (simultaneously in conjunction with Fig. 3-Fig. 5), describe the distribution device 100 in diagram in detail.
According to some embodiments of the present invention, as shown in Figure 2; rocker arm assembly 2 comprises main body portion 21 and drive portion 23; top of main body portion 21 is provided with the first roller 31; both sides of main body portion 21 are respectively equipped with the second roller 32; drive portion 23 is located at the bottom of main body portion 21, drive profile 231 to be formed on the bottom surface of drive portion 23.Preferably, main body portion 21, drive portion 23 can be integrally formed, but be not limited to this.
Further, main body portion 21 comprises base portion 213, the first side plate 211 and the second side plate 212, the first side plate 211 and the second side plate 212 are axially spaced apart from each other along the first camshaft 41 and the second camshaft 42, and the first side plate 211 and the second side plate 212 can be positioned at the top of base portion 213.The first roller 31 can be located between the first side plate 211 and the second side plate 212 pivotly by the first bearing pin (scheming not shown).The both sides of base portion 213 are respectively provided with second roller 32, and base portion 213 can be connected by the second bearing pin (scheming not shown) with these two the second rollers 32.
As shown in Figure 2, to be cambered surface drive profile 231, the cambered surface here can be divided into multistage connected subarc face in turn to form in the bottom surface of drive portion 23, and this driving profile 231 can be configured to boot last, but is not limited to this.Drive the both sides of profile 231 to be respectively arranged with the first blocked part 233, the top of valve 11 is folded between the first blocked part 233 of respective drive profile 231 both sides, for example the distance between the first blocked part 233 that drives profile 231 both sides can be slightly larger than the radial dimension at the top of valve 11, like this when valve 11 action, this first blocked part 233 can be carried out spacing well to valve 11, during anti-air-stop gate 11 action, cause distribution device 100 normally to work with driving profile 231 slippages.
Further, drive the two ends of profile 231 to be respectively arranged with the second blocked part (scheming not shown), the top that the second blocked part is suitable for the corresponding valve 11 of backstop is to prevent this valve 11 and corresponding driving profile 231 slippages.Like this, two the first blocked parts 233 and two the second blocked parts can form the stop configurations of a general toroidal, at valve 11 movement ranges when excessive, this annular stop configurations is backstop valve 11 well, anti-air-stop gate 11 with drive profile 231 separated, guarantee distribution device 100 can stablize, efficiently, operation continuously.Simultaneously, by the bottom at drive portion 23, directly form and drive profile 231 and above-mentioned stop configurations is set, thereby the bottom that can make valve 11 is directly resisted against and drives in profile 231, without traditional valve rocker 61(being set as shown in Figure 3 and Figure 4) structure, reduce amount of parts, simplified the structure of distribution device 100, reduced cost, energy transmission loss while also having reduced distribution device 100 work, has improved transmission efficiency.
Preferably, the first blocked part 233 and the second blocked part can be formed on drive portion 23, but are not limited to this.
In order to reduce the total quality of rocker arm assembly 2, the speed of response that makes 2 pairs of camshaft mechanisms of rocker arm assembly sooner, sensitiveer, preferably, on drive portion 23, can be provided with loss of weight portion 232, loss of weight portion 232 can be lightening hole, lightening hole both sides are vertically opened wide respectively, and interior can being provided with of loss of weight portion 232 strengthened structure to increase the particularly intensity of drive portion 23 of rocker arm assembly 2, when reducing rocker arm assembly 2 overall weight, also guaranteed that rocker arm assembly 2 has higher intensity.Strengthening structure can be stiffening plate, reinforcement convex tendon or the combination in any of strengthening the structures such as projection or above-mentioned several structures.
See figures.1.and.2 and in conjunction with shown in Fig. 5, drive portion 23 is two and axially spaced along the first camshaft 41 and the second camshaft 42, the outside of two drive portions 23 of each rocker arm assembly 2 is respectively arranged with a link arm 5, the first end of link arm 5 is connected with corresponding drive portion 23 pivotly by the first link arm bearing pin 51, and the second end of link arm 5 is connected with body group pivotly by the second link arm bearing pin 52.
In other words, in the example of Fig. 1, each valve mechanism 1 includes two valves 11, accordingly, drive portion 23 and link arm 5 are also two, and a valve 11 corresponding drive portion 23 and link arms 5, the two ends of this link arm 5 are connected with body group with the drive portion 23 of rocker arm assembly 2 with the second link arm bearing pin 52 pivotly by the first link arm bearing pin 51 respectively.Thus, the stability in the time of can keeping better rocker arm assembly 2 action.
In these some embodiments, link arm 5 is configured to oblong flat board, and simple in structure thus, easy to process, cost is low, takes up room little, convenient layout.
Be appreciated that, in the above-described embodiment, in order to guarantee that the first cam 411 and the first roller 31 and the second cam 421 and the second roller 32 can keep in touch state constantly, prevent slip phenomenon, distribution device 100 also has elastic reset structure, thereby can flexibly pushing against rocker arm assembly, elastic reset structure make the first roller 31 often be resisted against on the outer circumferential face of the first cam 411 and the second roller 32 is often resisted against on the second cam 421, for a person skilled in the art, can design different structure according to the structural characteristics of above-mentioned rocker arm assembly 2, size, the elastic reset structure of form, it can be integrative-structure, it can be Split type structure, as long as can guarantee that respective cams contacts constantly with corresponding roller, this for a person skilled in the art, should be that appearance is intelligible, therefore do not make particular determination here.
Below with reference to Fig. 3-Fig. 5 (simultaneously in conjunction with Fig. 1-Fig. 2), describe the distribution device 100 in diagram in detail.
In these some embodiments; rocker arm assembly 2 comprises two rocking arm portions 22 and middle arm portions 24; two ends of arm portions 24 in the middle of these two rocking arm portions 22 are located at respectively; two rocking arm portions 22 are oppositely arranged and being axially spaced apart from each other along the first camshaft 41 and the second camshaft 42; preferably, two rocking arm portions 22 can be integrally formed with middle arm portions 24, can reduce process step thus; intensity is high, and cost is low.
Further, as shown in Figure 5, rocker arm assembly 2 also comprises drive portion 23, and drive portion 23 is located at the bottom of each rocking arm portion 22, and drive portion 23 can be configured to laminar body and bottom surface is that cambered surface drives profile 231 to form.Equally, the cambered surface here can be divided into multistage connected subarc face in turn, and this driving profile 231 can be configured to boot last, but is not limited to this.
Further, the two ends of middle arm portions 24 are respectively arranged with the first roller 31 and middle arm portions 24 is connected by the first bearing pin (scheming not shown) with these two the first rollers 31, the second roller 32 is located between two rocking arm portions 22 pivotly by the second bearing pin (scheming not shown), and structure is more reasonable, compact thus.
In these some embodiments, the outside of two rocking arm portions 22 is respectively arranged with a link arm 5, the first end of link arm 5 (the F end in Fig. 5) is connected with corresponding rocking arm portion 22 pivotly by the first link arm bearing pin 51, and the second end of link arm 5 (the E end in Fig. 5) is connected with body group pivotly by the second link arm bearing pin 52.
In other words, in the example of Fig. 3 and Fig. 4, each valve mechanism 1 includes two valves 11, accordingly; rocking arm portion 22 and link arm 5 are also two; and a valve 11 corresponding rocking arm portion 22 and link arms 5, the two ends of this link arm 5 are connected with body group with the rocking arm portion 22 of rocker arm assembly 2 with the second link arm bearing pin 52 pivotly by the first link arm bearing pin 51 respectively.Thus, the stability in the time of can keeping better rocker arm assembly 2 action.
In these some embodiments, link arm 5 is configured to oblong flat board, and simple in structure thus, easy to process, cost is low, takes up room little, convenient layout.
In these some embodiments, as Figure 3-Figure 4, distribution device 100 also comprises valve rocker 61 and hydraulic tappet 62, on valve rocker 61, be provided with valve rocker roller 611, the top of valve 11 coordinates with one end of valve rocker 61, hydraulic tappet 62 coordinates with the other end of valve rocker 61, drives profile 231 to be resisted against on valve rocker roller 611.Thus, when rocker arm assembly 2 action, the driving profile 231 bottom it can promote valve rocker rollers 611 and drive valve rocker 61 actions, and valve rocker 61 and then drive valve 11 move to open valve 11.
In these some embodiments, as shown in Figure 3 and Figure 4, distribution device 100 also comprises Returnning spring 7, Returnning spring 7 comprises first end 71, the second end 72, intermediate portion 73, first volume pars convoluta 74 and volume Two pars convoluta 75, wherein first volume pars convoluta 74 is connected between first end 71 and intermediate portion 73, volume Two pars convoluta 75 is connected between the second end 72 and intermediate portion 73, wherein intermediate portion 73 can flexibly be pressed in middle arm portions 24, first end 71 and the second end 72 can flexibly be pressed on respectively in the rocking arm portion of both sides, can guarantee that thus the first roller 31 often contacts with the first cam 411 and the second roller 32 often contacts with the second cam 421, prevent slip phenomenon and affect distribution device 100 normal operations.
Wherein, above-mentioned first volume pars convoluta 74 and volume Two pars convoluta 75 can be positioned in body group, locating column for example can be set for locating above-mentioned curled portion in body group, or in the cylinder head in body group, other intermediate member can be set, this intermediate member can be provided with for locating the locating column of above-mentioned curled portion, but is not limited to this.
Need explanation a bit, for a person skilled in the art, the concrete structure of Returnning spring 7 and be not limited to this with the fit system of other parts.
Below simply describe according to the vehicle of the embodiment of the present invention.
According to the vehicle of the embodiment of the present invention, comprise according to the distribution device 100 for motor of describing in the above embodiment of the present invention.Thus, good according to the vehicle power of the embodiment of the present invention, noxious gas emission is few, energy-conserving and environment-protective.
Should be understood that, according to other configuration example of the vehicle of the embodiment of the present invention as motor, speed changer, differential mechanism, braking system etc. be all prior art and being well known for ordinary skill in the art, therefore describe in detail no longer one by one here.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " 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 feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.In addition, those skilled in the art can engage the different embodiments that describe in this specification or example and combine.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (16)
1. for a distribution device for motor, it is characterized in that, comprising:
Valve mechanism;
Rocker arm assembly, the substructure of described rocker arm assembly has driving profile, and described driving profile is suitable for driving the valve of described valve mechanism to move along the direction that is parallel to valve center line;
The first roller and the second roller, described the first roller and described the second roller are all located on described rocker arm assembly pivotly;
The first camshaft and the second camshaft, described the first camshaft has the first cam and described the second camshaft has the second cam, and described the first cam is against described the first roller and described the second cam against described the second roller;
Link arm, the first end of described link arm is connected pivotly with described rocker arm assembly, and the second end of described link arm is located in the body group of described motor pivotly; And
For regulating the phase-regulating mechanism of described the first camshaft and described the second camshaft relative phase.
2. the distribution device for motor according to claim 1, is characterized in that, described rocker arm assembly comprises:
Main body portion and drive portion, the top of described main body portion is provided with described the first roller, and the both sides of described main body portion are respectively equipped with described the second roller, and described drive portion is located at the bottom of described main body portion.
3. the distribution device for motor according to claim 2, it is characterized in that, described main body portion comprises base portion, the first and second side plates, described the first and second side plates being axially spaced apart from each other along described the first and second camshafts, described the first roller is located between described the first and second side plates pivotly by the first bearing pin, and the both sides of described base portion are respectively provided with described second roller and two the second rollers of described base portion and this are connected by the second bearing pin.
4. the distribution device for motor according to claim 2, it is characterized in that, the bottom surface of described drive portion is that cambered surface is to form described driving profile, the both sides of described driving profile are respectively arranged with the first blocked part, and the top of described valve is folded between the first blocked part of respective drive profile both sides.
5. the distribution device for motor according to claim 4, it is characterized in that, the two ends of described driving profile are respectively arranged with the second blocked part, and the top that described the second blocked part is suitable for the corresponding valve of backstop is to prevent this valve and corresponding driving profile slippage.
6. the distribution device for motor according to claim 2, is characterized in that, described main body portion, described drive portion is one-body molded and described drive portion on be provided with loss of weight portion, in described loss of weight portion, be provided with reinforcement structure.
7. the distribution device for motor according to claim 2, it is characterized in that, described drive portion is two and being axially spaced apart from each other along described the first and second camshafts, described in each, the outside of two of rocker arm assembly drive portions is respectively arranged with a described link arm, the first end of described link arm is connected with corresponding drive portion pivotly by the first link arm bearing pin, and the second end of described link arm is connected with body group pivotly by the second link arm bearing pin.
8. the distribution device for motor according to claim 2, is characterized in that, described link arm is configured to oblong flat board.
9. the distribution device for motor according to claim 1, is characterized in that, described rocker arm assembly comprises:
Two rocking arm portions and middle arm portions, described two rocking arm portions are located at respectively the two ends of described middle arm portions, and described two rocking arm portions are oppositely arranged and being axially spaced apart from each other along described the first and second camshafts.
10. the distribution device for motor according to claim 9, it is characterized in that, described rocker arm assembly also comprises: drive portion, and described drive portion is located at the bottom of rocking arm portion described in each, and described drive portion is configured to laminar body and bottom surface is that cambered surface is to form described driving profile.
11. distribution devices for motor according to claim 9, it is characterized in that, the two ends of described middle arm portions are respectively arranged with described the first roller and described middle arm portions is connected by the first bearing pin with these two first rollers, and described the second roller is located between described two rocking arm portions pivotly by the second bearing pin.
12. distribution devices for motor according to claim 9, it is characterized in that, the outside of described two rocking arm portions is respectively arranged with a described link arm, the first end of described link arm is connected with corresponding described rocking arm portion pivotly by the first link arm bearing pin, and the second end of described link arm is connected with body group pivotly by the second link arm bearing pin.
13. distribution devices for motor according to claim 9, is characterized in that, also comprise:
Valve rocker and hydraulic tappet, on described valve rocker, be provided with valve rocker roller, the top of described valve coordinates with one end of described valve rocker, and described hydraulic tappet coordinates with the other end of described valve rocker, and described driving profile is resisted against on described valve rocker roller.
14. distribution devices for motor according to claim 9, it is characterized in that, also comprise: Returnning spring, described Returnning spring comprise first end, the second end, intermediate portion and be connected to described first end and described intermediate portion between first volume pars convoluta and be connected to described the second end and described intermediate portion between volume Two pars convoluta, described intermediate portion is flexibly pressed in described middle arm portions, and described first end and described the second end flexibly compress respectively described two rocking arm portions.
15. according to the distribution device for motor described in any one in claim 1-14, it is characterized in that, described phase-regulating mechanism is phase discriminator.
16. 1 kinds of vehicles, is characterized in that, comprise according to the distribution device for motor described in any one in claim 1-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310746106.1A CN103758598B (en) | 2013-12-30 | 2013-12-30 | For the valve actuating mechanism of engine and there is its vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310746106.1A CN103758598B (en) | 2013-12-30 | 2013-12-30 | For the valve actuating mechanism of engine and there is its vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103758598A true CN103758598A (en) | 2014-04-30 |
| CN103758598B CN103758598B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310746106.1A Active CN103758598B (en) | 2013-12-30 | 2013-12-30 | For the valve actuating mechanism of engine and there is its vehicle |
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| Country | Link |
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| CN (1) | CN103758598B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20070443A1 (en) * | 2007-03-05 | 2008-09-06 | Piaggio & C Spa | SYSTEM FOR THE CONTINUOUS VARIATION OF THE VALVE AND STAGE OF THE VALVES IN AN INTERNAL COMBUSTION ENGINE |
| CN101539042B (en) * | 2009-04-29 | 2012-06-27 | 奇瑞汽车股份有限公司 | Valve lift control mechanism capable of realizing stepless regulation |
| DE102010048707A1 (en) * | 2010-10-19 | 2012-04-19 | Kolbenschmidt Pierburg Innovations Gmbh | Mechanical controllable valve train arrangement for combustion engine, has bearing units comprising rocker arm arrangement for performing phase displacement between adjacent gas shuttle valves that are associated with respective cylinders |
| DE102012204682A1 (en) * | 2012-03-23 | 2013-09-26 | Schaeffler Technologies AG & Co. KG | Hubvariabler valve drive for an internal combustion engine |
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2013
- 2013-12-30 CN CN201310746106.1A patent/CN103758598B/en active Active
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| Publication number | Publication date |
|---|---|
| CN103758598B (en) | 2016-05-11 |
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