CN103775153B - For the valve actuating mechanism of engine and the vehicle with it - Google Patents
For the valve actuating mechanism of engine and the vehicle with it Download PDFInfo
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- CN103775153B CN103775153B CN201410035974.3A CN201410035974A CN103775153B CN 103775153 B CN103775153 B CN 103775153B CN 201410035974 A CN201410035974 A CN 201410035974A CN 103775153 B CN103775153 B CN 103775153B
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- valve
- rocker arm
- arm assembly
- actuating mechanism
- outer shaft
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Abstract
The invention discloses a kind of valve actuating mechanism for engine and the vehicle with it.The valve actuating mechanism includes：Valve mechanism；Substructure has the rocker arm assembly in the driving face suitable for driving valve motion；It is pivotally arranged in the first and second rollers on rocker arm assembly；Including the interior axle being coaxially disposed and the camshaft of outer shaft, there is the interior axis cam rotated with corresponding axle and outer shaft cam respectively in interior axle and outer shaft, outer shaft cam is against the first roller, the roller of interior axle cam abutment second；It is located at the supporting structure of the both sides of rocker arm assembly；Phase-regulating mechanism；Valve actuating mechanism also includes being also configured with circular arc camber or sliding groove on three rollers or spacer pin, supporting structure, and three rollers are rollably close on circular arc camber, and spacer pin is slidably fit into sliding groove.The valve actuating mechanism of the present invention can realize the secondary opening of valve, while can also extend the time of valve duration, and it is simple and compact for structure, highly influence smaller on engine.
Description
Technical field
The present invention relates to automobile construction field, more particularly, to a kind of valve actuating mechanism for engine and the car with it
.
Background technology
The valve actuating mechanism of engine is used for the opening and closing for driving valve, and its port timing is generally basede on a certain narrow and small work of engine
The local optimum of condition scope and determine, immobilize in the course of the work, and valve motion rule is determined by cam profile completely.
But it is due to that cam profile is single, it is impossible to adjust valve motion rule according to engine actual condition conditions of demand, it is impossible to same
The different operating condition of Shi Shiying engines, oil consumption is higher, discharges poor, while it is unfavorable for improving the power performance of engine,
And general lift range variable technology can only change valve opening maximum lift, shift gears relatively simple, and it is complicated,
Parts are more, control cumbersome.
The content of the invention
It is contemplated that at least solving one of above-mentioned technical problem of the prior art to a certain extent.Therefore, this hair
A bright purpose is a kind of valve actuating mechanism for engine of proposition, and the valve actuating mechanism can realize that the secondary of valve is opened
Open, while the time of valve duration can also be extended, and it is simple and compact for structure, highly influence smaller on engine.
It is another object of the present invention to propose a kind of vehicle with above-mentioned valve actuating mechanism.
Valve actuating mechanism for engine according to embodiments of the present invention, including：Valve mechanism；Rocker arm assembly, it is described to shake
The substructure of arm component has driving face, and the driving face is suitable to the valve of driving valve mechanism along parallel to valve center
The direction motion of line；First roller and the second roller, first roller and second roller are pivotally arranged in described
On rocker arm assembly；Camshaft, the camshaft includes interior axle and the outer shaft being coaxially disposed, and the interior axle has same with the interior axle
The interior axis cam of rotation is walked, the outer shaft has the outer shaft cam with the outer shaft synchronous rotary, and the outer shaft cam is against institute
State the first roller, the second roller described in the interior axle cam abutment；Supporting structure for supporting the camshaft, the supporting
Structure is located at the both sides of the rocker arm assembly；And for adjusting the phase adjusted machine of the interior axle and the outer shaft relative phase
Structure；Wherein, the valve actuating mechanism also includes three rollers, and the three rollers are pivotally arranged on the rocker arm assembly, institute
State and circular arc camber is also configured with supporting structure, the three rollers are rollably close on the circular arc camber；Or institute
Stating valve actuating mechanism also includes spacer pin, and the spacer pin is located on the rocker arm assembly, is also configured with sliding on the supporting structure
Dynamic groove, the spacer pin is slidably fit into the sliding groove.
Valve actuating mechanism according to the above embodiment of the present invention for engine, using the interior axle including being coaxially disposed
With the camshaft of the outer shaft, it is possible to achieve the secondary opening of air valve and the mesh of valve duration phase extension
, when realizing the secondary opening of air valve, it is possible to achieve scavenging function, engine charging efficiency is improved, low speed torque is lifted
And transient working response characteristic, engine can be met（For example, petrol engine machine, Diesel engine machine）To different operating modes
The demand of valve motion rule.Valve actuating mechanism and its rocker arm assembly compact conformation simultaneously according to embodiments of the present invention, required cloth
It is small between being empty, highly influence small on engine, parts are few and change smaller, reliability to correlated parts such as engine cylinder covers
It is good, it is stable and elliptical gear is small.
According to one embodiment of present invention, the rocker arm assembly includes：First rocker arm assembly and the second rocker arm assembly, institute
The one end for stating the second rocker arm assembly is pivotally arranged on first rocker arm assembly, wherein first roller is pivotly set
On first rocker arm assembly, the driving face is formed in the bottom of first rocker arm assembly, and second roller can
On the other end for being pivotally located at second rocker arm assembly.
According to one embodiment of present invention, first rocker arm assembly includes：Two rocking arm portions and intermediate link arm portion,
Described two Rocker arm sections are not located at the two ends in the intermediate link arm portion, and described two rocking arm portions are oppositely arranged and along camshaft
It is axially spaced from each other；Second rocker arm assembly includes：Base portion and two side plates, described two side plates are relatively set
On the base portion, described two side plates are parallel to each other.
According to one embodiment of present invention, first roller is two and described two first rollers are located at institute respectively
The both sides in intermediate link arm portion are stated, are connected between described two first rollers and the intermediate link arm portion by the first bearing pin；
Second roller is pivotally arranged between described two side plates by the second bearing pin；The base portion passes through the 3rd bearing pin
And be pivotally arranged between described two rocking arm portions.
According to one embodiment of present invention, the relative inner in described two rocking arm portions is respectively arranged with spacing block set group,
The spacing block set group includes two ends and group of a spacing block set in two spacing block sets being oppositely arranged, every group
In the two ends of another spacing block set be spaced apart from each other, and the spacing block set in every group is close to the 3rd pin
Axle；The both sides of the base portion are respectively arranged with spacing projection group, and the spacing projection group is included in two spacing projections, every group
Two spacing projections are respectively between the two ends of described two spacing block sets of corresponding side, and the spacing block set is suitable to only
The spacing projection is kept off to limit the maximum angle of relatively described first rocker arm assembly of second rocker arm assembly.
According to one embodiment of present invention, the two ends of the 3rd bearing pin extend to both sides and beyond described two respectively
Rocking arm portion, the three rollers are respectively provided at the two ends of the 3rd bearing pin.
According to one embodiment of present invention, the two ends of second bearing pin extend to both sides and beyond the side plate respectively
Portion；The valve actuating mechanism also includes：Two elastic components, described two elastic components are respectively provided at the two of second rocker arm assembly
Side, one end of each elastic component is bent into the circular arc being adapted to beyond the part of the side plate with second bearing pin
Hook portion, each elastic component is around the circle of described two spacing block sets at least one of corresponding side and the other end of each elastic component
The shape being adapted to described two spacing block sets is bent into clip outside described two spacing block sets.
According to one embodiment of present invention, the outer shaft cam is interference fitted on the outer shaft, the interior axis cam
Gap coordinates on the outer shaft, is formed with stopper slot on the outer shaft, the interior axis cam by wear the interior axis cam,
The stopper slot and the backing pin of the interior axle are connected.
According to one embodiment of present invention, the supporting structure is respectively formed with upper recess and lower concave part, the fovea superior
The top surface of supporting structure described in the upward insertion in portion, the bottom surface of supporting structure described in the downward insertion of lower concave part, wherein described convex
Axle bearing is in the upper recess and the three rollers are accommodated in the lower concave part, and the top surface of the lower concave part constitutes institute
State circular arc camber.
According to one embodiment of present invention, the phase-regulating mechanism is phaser；The valve actuating mechanism also includes：Gas
Valve rocker roller is provided with door rocking arm and hydraulic tappet, the valve rocker, the top of the valve is shaken with the valve
The one end fits of arm, the other end of the hydraulic tappet and the valve rocker coordinates, and the driving face is resisted against the gas
On door rocking arm roller.
Vehicle according to embodiments of the present invention, in addition to the distribution for engine in the above embodiment of the present invention
Mechanism.
Brief description of the drawings
Fig. 1 is the structural representation of the valve actuating mechanism according to an embodiment of the invention for engine.
Fig. 2 is the side view of the valve actuating mechanism according to an embodiment of the invention for engine.
Fig. 3 is the structural representation at the rocker arm assembly of the valve actuating mechanism according to an embodiment of the invention for engine
Figure.
Fig. 4 is the decomposition texture at the rocker arm assembly of the valve actuating mechanism according to an embodiment of the invention for engine
Schematic diagram.
Fig. 5 is the structural representation of the supporting structure of the valve actuating mechanism according to an embodiment of the invention for engine
Figure.
Fig. 6 is the structural representation of the valve actuating mechanism in accordance with another embodiment of the present invention for engine.
Fig. 7 is the side view of the valve actuating mechanism in accordance with another embodiment of the present invention for engine.
Fig. 8 is that the structure at the rocker arm assembly of the valve actuating mechanism in accordance with another embodiment of the present invention for engine is shown
It is intended to.
Fig. 9 is the decomposition knot at the rocker arm assembly of the valve actuating mechanism in accordance with another embodiment of the present invention for engine
Structure schematic diagram.
Figure 10 is that the structure of the supporting structure of the valve actuating mechanism in accordance with another embodiment of the present invention for engine is shown
It is intended to.
Figure 11 is the structural representation of the camshaft of the valve actuating mechanism for engine according to embodiments of the present invention.
Reference：
Valve actuating mechanism 100,
Valve mechanism 1, valve 11,
First rocker arm assembly 21, driving face 201,
Rocking arm portion 211,
Intermediate link arm portion 212,
Second rocker arm assembly 22, base portion 221, side plate 222,
Spacing block set group 23, spacing block set 231,
Spacing projection group 24, spacing projection 241,
Elastic component 25, circular arc hook portion 251,
First roller 31, the first roller 32, three rollers 33, spacer pin 34,
Camshaft 42,
Interior axle 422, interior axis cam 4221, backing pin 4222
Outer shaft 423, outer shaft cam 4231, stopper slot 4232,
Supporting structure 5, upper recess 51, lower concave part 52, circular arc camber 521, sliding groove 53,
Valve rocker 61, valve rocker roller 611, hydraulic tappet 62,
First bearing pin 71, the second bearing pin 72, the 3rd bearing pin 73,
Elastic reset structure 8
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not direct contact but by it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
The body group of engine is the support of engine, is toggle, valve actuating mechanism and the assembling of each system
Matrix.In the art, usually, body group is mainly made up of cylinder block, cylinder head, cylinder head gasket and oil sump etc.,
Oil sump is generally located in the bottom of cylinder block, and cylinder head is located at the top of cylinder block, and cylinder head gasket is located at the top surface of cylinder block
Between the bottom surface of cylinder head, for sealing gap therebetween.
Cylinder head forms combustion chamber together with top land and cylinder, and the top of combustion chamber has air inlet and exhaust outlet,
The valve of valve mechanism is located in cylinder cap and closing air inlet and exhaust outlet.For existing general engine, adopt more
With the valve form of Two In and Two Out, minority also has the valve form for entering scene 2 using one-in-and-one-out or three.
For same engine, typically all there are a variety of different operating modes, such as low speed small load condition, high speed are big negative
Lotus operating mode etc., when engine is under different operating modes, the moment of torsion and power that engine is externally exported are different, while engine
The content of the pernicious gas of discharge is also different, and the valve actuating mechanism of engine is according to the working cycles and igniting carried out in each cylinder
The requirement of order, timing opening and closing inlet valve and exhaust valve.
Usually, valve actuating mechanism can adjust the lift amount of valve, but regulative mode is single, it is impossible to which meet makes well
With requiring.Valve actuating mechanism according to embodiments of the present invention can realize the secondary opening of valve, while also can proper extension valve
Opening time, regulative mode is various, so as to preferably meet the requirement of different operating modes.
It is appreciated that valve actuating mechanism according to embodiments of the present invention can be used for the valve event for driving air inlet side, certainly
It can be used for driving the valve event of exhaust side, or be used in air inlet side and exhaust side simultaneously to drive corresponding valve event.
Preferably, valve actuating mechanism according to embodiments of the present invention is used for the valve event for driving exhaust side, in the following description, with this
Valve actuating mechanism is used for exemplified by driving the valve of exhaust side.
The valve actuating mechanism 100 for engine according to embodiments of the present invention is described in detail referring to Fig. 1-Figure 11.
Valve actuating mechanism 100 for engine according to embodiments of the present invention includes valve mechanism 1, rocker arm assembly 2, first
Roller 31, the second roller 32, three rollers 33 or spacer pin 34 including the interior axle 422 and the camshaft of outer shaft 423 being coaxially disposed
42nd, the phase adjusted for the supporting structure 5 of bearer cams axle 42 and for adjusting interior axle 422 and the relative phase of outer shaft 423
Mechanism（It is not shown）.
Wherein, valve mechanism 1 is prior art, and is well known to those skilled in the art, and for example valve mechanism 1 can
So that including valve 11, valve 11 can move back and forth up and down to open or close along the center line of valve 11 in valve guide bushing
The air inlet or exhaust outlet of combustion chamber, can use the part of identical setting with prior art for these, no longer retouch in detail here
State.
As shown in Figure 2 and Figure 7, the substructure of rocker arm assembly 2 has driving face 201, and driving face 201 is suitable to driving gas
The valve 11 of door mechanism 1 is moved along the direction parallel to the center line of valve 11, and driving face 201 can be boot last face, but not limit
In this.It should be appreciated that those skilled in the art can the specific line style in the driving face 201 of flexible design according to actual needs,
It is not limited to above-mentioned boot last face.
First roller 31 and the second roller 32 are pivotally arranged on rocker arm assembly 2.That is, the first roller 31 is set
On rocker arm assembly 2 and relative to rocker arm assembly 2 pivotably, the second roller 32 is located on rocker arm assembly 2 and relative to rocking arm set
Part 2 is pivotable.Three rollers 33 are located on rocker arm assembly 2 and pivotable relative to rocker arm assembly 2.
As shown in Figure 1, Figure 2, shown in Fig. 6, Fig. 7 and Figure 11, camshaft 42 includes interior axle 422 and the outer shaft 423 being coaxially disposed, interior
Axle 422 has the interior axis cam 4221 with the synchronous rotary of interior axle 422, and outer shaft 423 has the outer crown of roll with the synchronous rotary of outer shaft 423
Wheel 4231.
Outer shaft cam 4231 can be interference fitted on outer shaft 423, and interior axis cam 4221 can be coordinated in outer shaft 423 with gap
On, stopper slot 4232 is could be formed with outer shaft 423, interior axis cam 4221 can be by wearing interior axis cam 4221, stopper slot
4232 and the backing pin 4222 of interior axle 422 be connected with interior axle 422.
Shown in reference picture 1 and Figure 11, interior axle 422 is embedded in outer shaft 423 and interior axle 422 can be rotated against with outer shaft 423,
Also can synchronous rotary.Backing pin 4222 can be slided in the stopper slot 4232, and stopper slot 4232 can limit the interior phase of axis cam 4221
To the rotational angle of outer shaft 423, i.e., by the position-limiting action of stopper slot 4232, the relative phase of interior axle 422 and outer shaft 423 can be
Continuously adjustabe in certain angle.
Outer shaft cam 4231 is against the first roller 31, and interior axis cam 4221 is against the second roller 32.In other words, outer shaft cam
4231 it is equal with the quantity of the first roller 31 and respectively correspondingly against cooperation, the interior roller 32 of axis cam 4221 and second
Quantity is equal and respectively correspondingly against cooperation.
According to some embodiments of the present invention, each in interior axis cam 4221 and outer shaft cam 4231 is respectively provided with big base
Circle（A sections in Fig. 2 and Fig. 7）, small basic circle（B sections in Fig. 2 and Fig. 7）And it is connected to the transition between big basic circle and small basic circle
Section（C sections in Fig. 2 and Fig. 7）, but not limited to this, for a person skilled in the art, it can fit according to actual needs
Answering property sets the molded line of cam.
For example, in two kinds of cams（That is outer shaft cam 4231 and interior axis cam 42）Big basic circle and corresponding roller（I.e.
One roller 31 or the second roller 32）During abutting contact, the lift amount of valve 11 can be maximum.That is, outer shaft cam
When 4231 big basic circle and the abutting contact of the first roller 31 and the big basic circle and the second 32 abutting contact of roller of interior axis cam 4221,
Valve 11 is in maximum unlatching lift condition.
When there is the small basic circle of at least one cam in two kinds of cams with corresponding roller contact, valve 11 may be at closing
The lift amount of closed state, i.e. valve 11 is minimum.For example, the big basic circle and the abutting contact of the first roller 31 of outer shaft cam 4231 and
When the small basic circle and the second 32 abutting contact of roller of interior axis cam 4221, or outer shaft cam 4231 small basic circle and the first roller
When the big basic circle and the second 32 abutting contact of roller of 31 abutting contacts and interior axis cam 4221, valve 11 may be at closing shape
State.
And two kinds of cams changeover portion and corresponding roller contact or one be changeover portion, another be big basic circle and phase
When answering roller contact, then the lift amount of valve 11 can be between zero lift and maximum lift.For example, the mistake of outer shaft cam 4231
When crossing section with the abutting contact of the first roller 31 and the changeover portion of interior axis cam 4221 and the second 32 abutting contact of roller, or outer shaft
The big basic circle of the changeover portion of cam 4231 and the abutting contact of the first roller 31 and interior axis cam 4221 and the second roller 32 are against connecing
When touching, the lift amount of valve 11 can be between zero lift and maximum lift.
It is understood, however, that the present invention is not limited thereto, for a person skilled in the art, explanation is being read
On the basis of book disclosure, it is clear that can with the molded line of flexible design above two cam, two kinds of cam profiles with
When the position of corresponding roller contact changes, the lift amount of driving gas door 11 can also adaptability change after rocker arm assembly 2 is acted
Change, this is for a person skilled in the art, it may be that be readily appreciated that.
In the embodiment as shown in Fig. 1-Fig. 5, valve actuating mechanism 100 also includes three rollers 33, and three rollers 33 can
Pivotally it is located on rocker arm assembly 2, three rollers 33 are located on rocker arm assembly 2 and pivotable relative to rocker arm assembly 2.
Circular arc camber 521 is configured with supporting structure 5, three rollers 33 are rollably close on circular arc camber 521, when
When rocker arm assembly 2 is by drive actions, three rollers 33 are rolled along circular arc camber 521.That is, using three rollers 33 and circle
The fit structure of arc surface 521 can limit the movement locus of rocker arm assembly 2, while the steady of rocker arm assembly 2 can be kept well
It is qualitative and simple in construction.At the same time, this uses circular arc camber 521, it is ensured that the smoothing out of the Conduce Disciplinarian of valve 11, round and smooth,
Reduce the impact of valve actuating mechanism 100.It is understood that valve actuating mechanism 100 can be justified for the type adjustment of different engines
The parameter of arc surface 521.
In the embodiment as shown in Fig. 6-Figure 10, valve actuating mechanism 100 also includes spacer pin 34.Spacer pin 34 can be set
On rocker arm assembly 2.
Sliding groove 53 is also configured with supporting structure 5, spacer pin 34 is slidably fit into sliding groove 53.Work as rocking arm set
When part 2 is by drive actions, spacer pin 34 is moved along sliding groove 53.That is, using the cooperation of spacer pin 34 and sliding groove 53
Structure can limit the movement locus of rocker arm assembly 2, while the stability of rocker arm assembly 2 can be kept well, and it is simple in construction.
At the same time, this uses sliding groove 53, it is ensured that the smoothing out of the Conduce Disciplinarian of valve 11, round and smooth, reduces rushing for valve actuating mechanism 100
Hit.It is understood that valve actuating mechanism 100 can adjust the form parameter of sliding groove 53 for the type of different engines.
Phase-regulating mechanism is used for the relative phase for adjusting outer shaft 423 and interior axle 422, thus change outer shaft cam 4231 with
The relative phase of interior axis cam 4221.According to one embodiment of present invention, phase-regulating mechanism can be phaser, phaser
Can be single rotor phaser, i.e. only one of which rotor, rotor can be connected with one in interior axle 422 and outer shaft 423, phase
The stator of position device can be connected with interior axle 422 and with another in outer shaft 423, to adjust the phase of relatively another axle of an axle.
It is connected with the rotor of phaser with interior axle 422, exemplified by stator is connected with outer shaft 423, phaser can change the relative of interior axle 422
Phase, when phaser is adjusted clockwise, valve 11 realizes that secondary opening lift continues to increase, when phaser is adjusted counterclockwise, gas
The unlatching duration of door 11 gradually increases.It should be appreciated that the relative phase that phaser adjusts two axles has been prior art, here
The concrete operating principle and regulation process of specific configuration, phaser to phaser do not make specified otherwise.
It is appreciated that being coaxially disposed because the driving homonymy of valve actuating mechanism 100 valve 11 according to embodiments of the present invention is used
Interior axle 422 and outer shaft 423, therefore valve actuating mechanism 100 according to embodiments of the present invention adjusts two axles by phaser
After relative phase, it is possible to achieve the secondary opening of valve 11 and the extension opening time of valve 11.
Specifically, camshaft 42 rotate during, it may appear that the big basic circle of two kinds of above-mentioned cams with it is corresponding
Roller contact, now the lift amount of valve 11 can for maximum, while there is also the big basic circle and corresponding roller of a kind of cam
Contact and the situation of the changeover portion of another cam and corresponding roller contact, now the lift amount relative maximum lift of valve 11 has been
Reduce, such valve 11 has breakdown action twice, wherein being once opened into maximum lift, the lift of another unlatching is relatively most
High-lift reduces, that is, realizes the purpose of the secondary opening of valve 11.
Further, when the interval of the secondary opening of valve 11 is larger, the secondary opening of valve 11 of such as exhaust side is close to air inlet side
Valve closing time when, it is possible to achieve scavenging function, so as to improve low engine speed moment of torsion and transient response performance.If
During 11 secondary opening of valve of exhaust side, heat management can be strengthened, rapid warming-up is realized, engine is cold when solving low compression ratio opens
Dynamic difficult problem, and engine emission can be reduced, improve engine cold idle stability and operating ride comfort and DPF
Moment of torsion control of regeneration stage etc. is acted on.The time interval of the specific control secondary opening of valve 11, can pass through adaptability design
Cam profile is realized, but not limited to this.
After the relative phase that phaser adjusts two axles, the relative phase hair of interior axis cam 4221 and outer shaft cam 4231
It is raw to change, it can now realize the purpose of the increase opening time of valve 11, such as it is interior after the relative phase of two axles has been adjusted
The situation for continuing big basic circle and corresponding roller contact occurs in axis cam 4221 and outer shaft cam 4231, can now greatly prolong
Valve 11 opens the duration.
Thus, the valve actuating mechanism 100 according to the above embodiment of the present invention for engine, using including being coaxially disposed
The camshaft 42 of interior axle 422 and outer shaft 423, it is possible to achieve the secondary opening of valve 11 and valve 11 open the mesh of duration extension
, when realizing 11 secondary opening of valve, it is possible to achieve scavenging function, improve engine charging efficiency, lifting low speed torque and
Transient working response characteristic, can meet engine（For example, petrol engine machine, Diesel engine machine）To the gas of different operating modes
The demand of the door characteristics of motion.Valve actuating mechanism 100 and its compact conformation of rocker arm assembly 22 simultaneously according to embodiments of the present invention, it is required
Arrangement space is small, highly influences small on engine, and parts are few and change smaller, reliability to correlated parts such as engine cylinder covers
It is good, it is stable and elliptical gear is small.
Referring to Fig. 3-Fig. 5（In combination with Fig. 1-Fig. 2）, Fig. 6-Figure 10（In combination with Fig. 6-Fig. 7）And Figure 11 is detailed
Valve actuating mechanism 100 in thin description diagram.
Rocker arm assembly 2 can include the first rocker arm assembly 21 and the second rocker arm assembly 22.One end of second rocker arm assembly 22
It is pivotally arranged on the first rocker arm assembly 21, wherein the first roller 31 is pivotally arranged on the first rocker arm assembly 21, driving
Type face 201 forms the bottom in the first rocker arm assembly 21, and the second roller 32 is pivotally arranged in the another of the second rocker arm assembly 22
On end.That is, the second rocker arm assembly 22 and the first rocker arm assembly 21 can the relative motions in the range of certain angle.
Further, as shown in figures 4 and 9, the first rocker arm assembly 21 can include two rocking arm portions 211 and middle connection
Arm 212, two rocking arm portions 211 can be respectively provided at the two ends in intermediate link arm portion 212, and two rocking arm portions 211 are oppositely arranged
And along the axially spaced from each other of camshaft 42.Second rocker arm assembly 22 can include base portion 221 and two side plates 222, two
Individual side plate 222 is relatively located on base portion 221, and two side plates 222 are parallel to each other.
As shown in Figure 3, Figure 4, the first roller 31 is two and two the first rollers 31 can be located at intermediate link arm respectively
The both sides in portion 212, can be connected between two the first rollers 31 and intermediate link arm portion 212 by the first bearing pin 71.Second rolling
Son 32 can be pivotally arranged in by the second bearing pin 72 to be stated between two side plates 222.Base portion 221 passes through the 3rd bearing pin 73
And be pivotally arranged between two rocking arm portions 221.
Further, as shown in figures 4 and 9, the relative inner in two rocking arm portions 211 is respectively arranged with spacing block set group
23, spacing block set group 23 can include two of a spacing block set 231 in two spacing block sets 231 being oppositely arranged, every group
The two ends with another spacing block set 231 in the group are held to be spaced apart from each other, and the spacing block set 231 in every group is close to the 3rd
Bearing pin 73.That is, a spacing block set 231 first end (such as Fig. 4 and Fig. 9 H1 ends) with reorganization in another
The first end (such as Fig. 4 and Fig. 9 H1 ends) of spacing block set 231 is spaced apart to limit chute.
The both sides of base portion 221 can be respectively arranged with spacing projection group 24, and spacing projection group 24 can be spacing including two
Projection 241, two spacing projections 241 in every group can respectively between the two ends of two spacing block sets 231 of corresponding side,
In other words, in the chute of corresponding side.Spacing block set 231 is suitable to backstop spacing projection 241 to limit the second rocker arm assembly 22
With respect to the maximum angle of the first rocker arm assembly 21.In other words, spacing block set 231 is suitable to backstop spacing projection 241 to limit second
Rocker arm assembly 22 is with respect to the hard-over of the first rocker arm assembly 21, wherein hard-over namely the second rocker arm assembly 22 relative the
After one rocker arm assembly 21 is rotated, the maximum of the angle between the second rocker arm assembly 22 and the first rocker arm assembly 21.
Further, the shape of two spacing block sets 231 in one group of spacing block set group 23 can be with identical and can be on
The radial symmetric of 3rd bearing pin 73 arranges that the distance between two spacing block sets 231 are equal with the diameter of the 3rd bearing pin 73.Thus,
The structure of rocker arm assembly 2 is simpler, and processing cost is low and easy to manufacture.
Further, the two ends of the second bearing pin 72 can extend and beyond two side plates 222 to both sides respectively.Distribution
Mechanism 100 can also include：Two elastic components 25, two elastic components 25 can be respectively provided at the both sides of the second rocker arm assembly 22,
One end of each elastic component 25 is bent into the circular arc hook portion 251 being adapted to beyond the part of side plate 222 with the second bearing pin 72,
Each elastic component 25 around the circle of two spacing block sets 231 at least one of corresponding side and the other end of each elastic component 251 be bent into
The shape that two spacing block sets 231 are adapted to is with clip outside two spacing block sets 231.
The course of work at the rocker arm assembly 2 of valve actuating mechanism 100 is described in detail below with reference to Fig. 1-Fig. 4：
Elastic component 25 drive the second rocker arm assembly 22 motion make spacing projection group 24 around the 3rd bearing pin 73 corresponding side cunning
Rotated in groove.
When valve 11 is in lift, that is to say, that when valve 11 is in an open position, spacing projection 241 is against chute
One end, at this moment angle between the first rocker arm assembly 21 and the second rocker arm assembly 22 is maximum so that the first rocker arm assembly 21 with
Second rocker arm assembly 22 is used as mass motion.
When valve 11 is closed, elastic component 25 drives the second rocker arm assembly 22, makes the first rocker arm assembly 21 and the second rocking arm
Angle is in the trend that diminishes between component 22, thus ensure that the roller 31 of outer shaft cam 4231 and first, interior axis cam 4221 and
Second roller 32 is contacted all the time not to be separated, and can adjust valve clearance, so as to avoid valve actuating mechanism 100 from occurring to slip now
As and influence the stability of valve actuating mechanism 100, strengthen valve actuating mechanism 100 stability.
As shown in Figure 3 and Figure 4, the two ends of the 3rd bearing pin 73 extend to both sides and beyond two rocking arm portions 211, the 3rd respectively
Roller 33 can be two, and two three rollers 33 can be respectively provided at the two ends of the 3rd bearing pin 73.Correspondingly, supporting construction
The circular arc camber 521 coordinated respectively with two three rollers 33 is configured with 5.As shown in figure 5, supporting structure 5 is respectively formed with
Upper recess 51 and lower concave part 52, the top surface of the upward insertion supporting structure 5 of upper recess 51, the downward insertion supporting structure 5 of lower concave part 52
Bottom surface, wherein camshaft 42 is supported in upper recess 51 and three rollers 33 are accommodated in lower concave part 52, the top of lower concave part 52
Face constitutes circular arc camber 521.Thus, supporting construction 5 can also preferably supporting cam wheel axle 42.
Further, as shown in Fig. 2 upper recess 51 can be semicircular arc, diameter and the camshaft 42 of upper recess 51（Outside
Axle 423）Diameter it is roughly equal so that play a part of preferably support outer shaft 423, to outer shaft 423 carry out axial limiting.
As shown in Fig. 5 and Figure 10, in some embodiments, supporting construction 5 is configured to rectangle tabular, and supporting construction
5 are provided with upper notch 51 corresponding with camshaft 42 and lower recess 52 corresponding with three rollers 33, thus simple in construction, processing
Convenient, cost is low, occupies little space, convenient arrangement.
In some embodiments, the both sides of base portion 20 are respectively arranged with a supporting construction 5, the two sides of base portion 20
Provided with three rollers 33.In the example of fig. 1 and 2, each valve mechanism 1 includes two valves 11, accordingly, the 3rd rolling
Son 33, drive division 23, supporting construction 5 and circular arc camber 521 are two, and one drive division 23, one of correspondence of valve 11
Individual three rollers 33, a supporting construction 5 and a circular arc camber 521.Thus, it is possible to preferably supporting cam wheel axle 42, increase
Stability when valve actuating mechanism 100 is run.
Wherein, supporting construction 5 is located in the body group of engine.Here, it is necessary to illustrate a bit, in the art, body
Group mainly includes the parts such as cylinder block, cylinder head, cylinder head gasket and oil sump, but in the present invention, body group should
It broadly understood, you can not only include the part included by above-mentioned traditional sense upper machine body group to be interpreted as the body group, may be used also
With including some attached installing components etc..For example, in superincumbent description, " supporting construction 5 is located at the body group of engine
On ", it can be understood as supporting construction 5 is directly arranged in body group such as cylinder head, or centre can be fixedly installed in cylinder head
Part, supporting construction 5 is located on the intermediate member, i.e., intermediate member here can be understood as a part for body group.
As shown in Figure 8 and Figure 9, spacer pin 34 can be integrally formed with the 3rd bearing pin 73, the two ends difference of the 3rd bearing pin 73
Extend to both sides and form spacer pin 34 beyond two rocking arm portions 211.Spacer pin 34 can be two.Correspondingly, such as Figure 10
It is shown, circular arc sliding groove 53 can be provided with supporting construction 5, spacer pin 34 can be slided in sliding groove 53.It is wherein spacing
Pin 34 can be stepped, and the concrete shape of sliding groove 53 can be not limited to according to the Its Track Design needed for rocker arm assembly 2
This.
It is appreciated that in the above-described embodiment, in order to ensure the roller 31 of outer shaft cam 4231 and first and interior crown of roll
The roller 32 of wheel 4221 and second can keep contact condition constantly, prevent slip phenomenon, valve actuating mechanism 100 is also flexible
Resetting structure 8, elastic reset structure 8 can flexibly push against the first roller 31 and the second roller 32 so that the first roller 31 is often supported
Lean against on the outer peripheral face of outer shaft cam 4231 and the second roller 32 is often resisted against on interior axis cam 4221, for the technology of this area
For personnel, different structure, size, the elastic reset knot of form can be designed according to the architectural characteristic of above-mentioned rocker arm assembly 2
Structure 8, can be integrative-structure, can be Split type structure, as long as ensure that respective cams are contacted with the corresponding roller moment,
This is for a person skilled in the art, it may be that be readily appreciated that, therefore is not particularly limited here.For example, such as Fig. 1 and
Shown in Fig. 6, elastic reset structure 8 can be spring.
As shown in Fig. 1 and Fig. 2 and Fig. 6 and Fig. 7, valve actuating mechanism 100 also includes valve rocker 61 and hydraulic tappet 62, gas
Valve rocker roller 611, the top of valve 11 and the one end fits of valve rocker 61, hydraulic tappet 62 are provided with door rocking arm 61
Coordinate with the other end of valve rocker 61, driving face 201 is resisted against on valve rocker roller 611.Thus, in rocker arm assembly 2
During action, the driving face 201 of its bottom can promote valve rocker roller 611 to drive valve rocker 61 to act, valve rocker 61
And then drive valve 11 to act to open valve 11.
Hydraulic tappet 62 can be used for regulation valve 11 gap, and the specific configuration and operation principle of hydraulic tappet 62 are to be existing
Technology, and being widely used in this area, such as applied in VVL technologies, therefore do not make in detail for hydraulic tappet 62 here
Thin description.
Vehicle according to embodiments of the present invention is briefly described below.
Vehicle according to embodiments of the present invention includes being used for matching somebody with somebody for engine according to described in the above embodiment of the present invention
Mechanism of qi structure 100.Thus, power performance according to embodiments of the present invention is good, and noxious gas emission is few, energy-conserving and environment-protective.
It should be appreciated that other compositions of vehicle according to embodiments of the present invention such as engine, speed changer, differential
Device, brakes etc. are prior art and to be well known for ordinary skill in the art, therefore no longer detailed one by one here
Thin description.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
What combined in an appropriate manner in one or more embodiments or example.In addition, those skilled in the art can say this
Not be the same as Example or example described in bright book are engaged and combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (7)
1. a kind of valve actuating mechanism for engine, it is characterised in that including：
Valve mechanism；
Rocker arm assembly, the substructure of the rocker arm assembly has driving face, and the driving face is suitable to driving valve mechanism
Valve is moved along the direction parallel to valve center line；
The rocker arm assembly includes：
First rocker arm assembly and the second rocker arm assembly, one end of second rocker arm assembly are pivotally arranged in first rocking arm
On component, wherein the first roller is pivotally arranged on first rocker arm assembly, the driving face is formed described first
The bottom of rocker arm assembly, the second roller is pivotally arranged on the other end of second rocker arm assembly；
First rocker arm assembly includes：Two rocking arm portions and intermediate link arm portion, described two Rocker arm sections are not located at described
The two ends in intermediate link arm portion, described two rocking arm portions are oppositely arranged and along the axially spaced from each other of camshaft；
The relative inner in described two rocking arm portions is respectively arranged with spacing block set group, and the spacing block set group includes two and set relatively
The spacing block set put, the two ends and the two ends of another spacing block set in the group of a spacing block set in every group
It is spaced apart from each other, and the spacing block set in every group is close to the 3rd bearing pin；
Second rocker arm assembly includes：Base portion and two side plates, described two side plates are relatively located on the base portion,
Described two side plates are parallel to each other；
The base portion is pivotally arranged between described two rocking arm portions by the 3rd bearing pin；
The both sides of the base portion are respectively arranged with spacing projection group, and the spacing projection group is included in two spacing projections, every group
Two spacing projections respectively positioned at corresponding side described two spacing block sets two ends between, the spacing block set is suitable to
Spacing projection described in backstop is to limit the maximum angle of relatively described first rocker arm assembly of second rocker arm assembly；
First roller is the both sides that two and described two first rollers are located at the intermediate link arm portion respectively, described two
It is connected between individual first roller and the intermediate link arm portion by the first bearing pin；
Second roller is pivotally arranged between described two side plates by the second bearing pin；
Camshaft, the camshaft includes interior axle and the outer shaft being coaxially disposed, and the interior axle has with the interior axle synchronous rotary
Interior axis cam, the outer shaft has the outer shaft cam with the outer shaft synchronous rotary, and the outer shaft cam is against described first
Roller, the second roller described in the interior axle cam abutment；
Supporting structure for supporting the camshaft, the supporting structure is located at the both sides of the rocker arm assembly；And
Phase-regulating mechanism for adjusting the interior axle and the outer shaft relative phase；
Wherein, the valve actuating mechanism also includes three rollers, and the three rollers are pivotally arranged on the rocker arm assembly, institute
State and circular arc camber is also configured with supporting structure, the three rollers are rollably close on the circular arc camber；Or
The valve actuating mechanism also includes spacer pin, and the spacer pin is located on the rocker arm assembly, and structure is gone back on the supporting structure
Sliding groove is made, the spacer pin is slidably fit into the sliding groove.
2. the valve actuating mechanism according to claim 1 for engine, it is characterised in that the two ends of the 3rd bearing pin point
Do not extend to both sides and beyond described two rocking arm portions, the three rollers are respectively provided at the two ends of the 3rd bearing pin.
3. the valve actuating mechanism according to claim 1 for engine, it is characterised in that the two ends of second bearing pin point
Do not extend to both sides and beyond the side plate；
The valve actuating mechanism also includes：Two elastic components, described two elastic components are respectively provided at the two of second rocker arm assembly
Side, one end of each elastic component is bent into the circular arc being adapted to beyond the part of the side plate with second bearing pin
Hook portion, each elastic component is around the circle of described two spacing block sets at least one of corresponding side and the other end of each elastic component
The shape being adapted to described two spacing block sets is bent into clip outside described two spacing block sets.
4. the valve actuating mechanism according to claim 1 for engine, it is characterised in that the outer shaft cam interference fit
On the outer shaft, the interior axle cam clearance coordinates on the outer shaft, and stopper slot, the interior axle are formed with the outer shaft
Cam is connected by wearing the backing pin of the interior axis cam, the stopper slot and the interior axle.
5. the valve actuating mechanism according to claim 1 for engine, it is characterised in that the supporting structure is formed respectively
There are upper recess and lower concave part, the top surface of supporting structure described in the upward insertion of upper recess, described in the downward insertion of lower concave part
The bottom surface of supporting structure, wherein the camshaft supporting is in the upper recess and the three rollers are accommodated in the lower concave part
Interior, the top surface of the lower concave part constitutes the circular arc camber.
6. the valve actuating mechanism according to claim 1 for engine, it is characterised in that
The phase-regulating mechanism is phaser；
The valve actuating mechanism also includes：Valve rocker roller, institute are provided with valve rocker and hydraulic tappet, the valve rocker
The top of valve and the one end fits of the valve rocker are stated, the other end of the hydraulic tappet and the valve rocker coordinates,
The driving face is resisted against on the valve rocker roller.
7. a kind of vehicle, it is characterised in that including the gazogene for engine according to any one of claim 1-6
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035974.3A CN103775153B (en) | 2014-01-23 | 2014-01-23 | For the valve actuating mechanism of engine and the vehicle with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035974.3A CN103775153B (en) | 2014-01-23 | 2014-01-23 | For the valve actuating mechanism of engine and the vehicle with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775153A CN103775153A (en) | 2014-05-07 |
| CN103775153B true CN103775153B (en) | 2017-09-29 |
Family
ID=50567839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410035974.3A Expired - Fee Related CN103775153B (en) | 2014-01-23 | 2014-01-23 | For the valve actuating mechanism of engine and the vehicle with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103775153B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457665A (en) * | 2007-12-14 | 2009-06-17 | 现代自动车株式会社 | Continuous variable valve lift system |
| CN203097983U (en) * | 2012-12-31 | 2013-07-31 | 长城汽车股份有限公司 | Fully variable valve stroke device |
| CN103758605A (en) * | 2014-01-23 | 2014-04-30 | 长城汽车股份有限公司 | Gas distributing mechanism for engine and car with same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2378729A (en) * | 2001-08-18 | 2003-02-19 | Mechadyne Plc | Adjustable engine valve control system |
| US20080078345A1 (en) * | 2006-09-28 | 2008-04-03 | Knauf Michael B | Phaser-actuated continuously variable valve actuation system with lost motion capability |
| GB2473250A (en) * | 2009-09-07 | 2011-03-09 | Mechadyne Plc | Variable valve actuating system for i.c. engines |
| GB2480638A (en) * | 2010-05-26 | 2011-11-30 | Mechadyne Plc | Assembly of a valve operating system incorporating a cam summation mechanism |
-
2014
- 2014-01-23 CN CN201410035974.3A patent/CN103775153B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457665A (en) * | 2007-12-14 | 2009-06-17 | 现代自动车株式会社 | Continuous variable valve lift system |
| CN203097983U (en) * | 2012-12-31 | 2013-07-31 | 长城汽车股份有限公司 | Fully variable valve stroke device |
| CN103758605A (en) * | 2014-01-23 | 2014-04-30 | 长城汽车股份有限公司 | Gas distributing mechanism for engine and car with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103775153A (en) | 2014-05-07 |
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Granted publication date: 20170929 |