CN103925032B - A kind of variable valve lift driving device - Google Patents
A kind of variable valve lift driving device Download PDFInfo
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- CN103925032B CN103925032B CN201310014477.0A CN201310014477A CN103925032B CN 103925032 B CN103925032 B CN 103925032B CN 201310014477 A CN201310014477 A CN 201310014477A CN 103925032 B CN103925032 B CN 103925032B
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Abstract
The invention discloses a kind of variable valve lift driving device, relate to engine components, be used for improving the service life of parts, reduce processing cost and the fuel consumption of electromotor.This variable valve lift driving device includes the first valve and duaspiracle, the first valve rocker and duaspiracle rocking arm, camshaft, the first swing arm and the first swing arm adjusting bracket, the second swing arm and the second swing arm adjusting bracket；Drive the first swing arm to swing to realize opening or closing of the first valve around the first center of rotation during cam axle, and during cam axle, drive the second swing arm to realize opening or closing of duaspiracle around the 3rd center of rotation swing；First swing arm adjusting bracket rotates to drive the first drive division to regulate the position of the first center of rotation around the first axle rotation around the first axle of self simultaneously, and the second swing arm adjusting bracket rotates to drive the second drive division to rotate the position of regulation the 3rd center of rotation simultaneously around the second axle around the second axle of self.
Description
Technical field
The present invention relates to engine components, particularly relate to a kind of variable valve lift driving device.
Background technology
Valve is a vitals in electromotor, the waste gas after inputting fuel in electromotor and discharging burning.In engine art, valve stroke refers to valve from being just opened to fully open moved height, the namely Lift of valve.The cam profile of the camshaft used in electromotor is different, and the valve stroke obtained is the most different.The valve stroke of conventional engines is changeless, the i.e. cam profile of its camshaft only one, the design of its lift is to select electromotor balance under full working scope, therefore this lift can not make electromotor all obtain good response in high velocity and low regime, result is that electromotor both can not get optimal high speed efficiency, also can not get optimal low speed torque, simply obtain the performance more balanced under full working scope.
Lift range variable technology (VVL, variablevalvelift) its valve stroke can be changed according to the different operating modes of electromotor, make electromotor can obtain good response in high velocity and low regime, thus improve high-speed power and the low speed torque of electromotor.Existing lift range variable technology controls effect according to it can be divided into section variable valve stroke and continuously variable valve lift.Compared with section variable valve stroke, continuously variable valve lift can preferably coordinate the combustion system of electromotor, has certain superiority.
In existing variable valve lift driving device, it is to obtain different valve strokes by the cam profile of change camshaft mostly.Concrete way is to use knockdown camshaft, and this assembled camshaft is provided with multiple cam with different molded line, drives valve connecting rod to move back and forth by the different cam profiles on this assembled camshaft, so that variable valve lift.
But during using this variable valve lift driving device conversion valve stroke, the related components such as camshaft, valve connecting rod all bears shock loading in various degree, reduces the service life of parts.And knockdown camshaft is more complicated than traditional camshaft structure, quality big, adds processing cost and the fuel consumption of electromotor.
Summary of the invention
The embodiment of the present invention provides a kind of variable valve lift driving device, to improve the service life of parts, reduces processing cost and the fuel consumption of electromotor.
For reaching above-mentioned purpose, the embodiment of the present invention adopts the following technical scheme that
Embodiments provide a kind of variable valve lift driving device, it includes the first valve and duaspiracle, the the first valve connecting rod being connected with the first valve and the duaspiracle connecting rod being connected with duaspiracle, the first valve rocker being connected with the first valve connecting rod and the duaspiracle rocking arm being connected with duaspiracle connecting rod, and the camshaft that driving the first valve and duaspiracle are opened or closed, the first swing arm and the first swing arm adjusting bracket it is provided with between the first valve rocker and camshaft, the second swing arm and the second swing arm adjusting bracket it is provided with between duaspiracle rocking arm and camshaft；Described first swing arm is provided with the first center of rotation and the second center of rotation, described second swing arm is provided with the 3rd center of rotation and the 4th center of rotation, described first swing arm adjusting bracket is provided with the first drive division being flexibly connected with described first center of rotation, and described second swing arm adjusting bracket is provided with the second drive division being flexibly connected with described 3rd center of rotation；Drive the first swing arm to swing to drive the first valve link linear reciprocating motion to realize opening or closing of the first valve around the first center of rotation during cam axle, and during cam axle, drive the second swing arm to swing to drive the reciprocating motion of duaspiracle link linear to realize opening or closing of duaspiracle around the 3rd center of rotation；First swing arm adjusting bracket rotates to drive the first drive division to regulate the position of the first center of rotation around the first axle rotation around the first axle of self simultaneously, and the second swing arm adjusting bracket rotates to drive the second drive division to rotate the position of regulation the 3rd center of rotation simultaneously around the second axle around the second axle of self.
Specifically, described first axle is coaxially disposed with described second center of rotation；Described second axle is coaxially disposed with described 4th center of rotation.
In order to make the weight capacity of camshaft more preferably, the position of the first axle and the second axle fixes, described variable valve lift driving device, also include the bearing block between described camshaft, the first swing arm adjusting bracket and the second swing arm adjusting bracket, described bearing block has connecting portion, described first axle and described second axle and is jointly flexibly connected with described connecting portion.
In order to drive the first swing arm adjusting bracket and the second swing arm adjusting bracket to rotate, described variable valve lift driving device, also include power-driven mechanism, described power-driven mechanism, for driving the first swing arm adjusting bracket to rotate to drive the first drive division to regulate the position of the first center of rotation around the first axle rotation around the first axle of self simultaneously, is additionally operable to the position driving the second swing arm adjusting bracket simultaneously to regulate the 3rd center of rotation around the second axle to drive the second drive division to rotate around the second axle rotation of self.
Specifically, described first swing arm adjusting bracket is provided with the first gap, and described second swing arm adjusting bracket is provided with the second gap, and described first gap and the second gap are used for connecting power-driven mechanism.
For ease of processing, the surface configuration of described first gap and described second gap is U-shaped.
In order to realize the different opening of the first valve and duaspiracle, the surface configuration of described first gap differs with the surface configuration of described second gap.
Wherein, for making power transmission process energy loss less, transmission efficiency is higher, and described power-driven mechanism includes crank shaft and the servomotor driving described crank shaft to rotate；Described crank shaft includes two line parts being coaxially disposed and between two line parts and the fixing crank throw portion connecting two line parts, the axis of said two line part parallel with the axis in described crank throw portion and between there is crank throw portion described in the distance specified, described first gap and the equal clamping of the second gap.
In order to guarantee the difficulty that the first drive shaft is coaxial with the first center of rotation, the second drive shaft is coaxial with the second center of rotation when reducing assembling, described first drive division includes the first through hole being located on described first swing arm adjusting bracket and is located at the first drive shaft in described first through hole, and described first drive shaft is flexibly connected with described first center of rotation；Described second drive division includes the second through hole being located on described second swing arm adjusting bracket and is located at the second drive shaft in described second through hole, and described second drive shaft is flexibly connected with described 3rd center of rotation.
Specifically, the second center of rotation is the third through-hole being located at the first swing arm, and the 4th center of rotation is the fourth hole being located at the second swing arm；Being provided with the first swing arm roller in third through-hole, described first swing arm roller contacts with the first cam on described camshaft；Being provided with the second swing arm roller in fourth hole, described second swing arm roller contacts with the second cam on described camshaft.
For the variable valve lift driving device that the embodiment of the present invention provides, a kind of valve stroke can be realized when the first center of rotation is positioned at a position, another kind of different valve stroke can be realized when adjusting the first center of rotation and being located at another various location, a kind of valve stroke can be realized when the 3rd center of rotation is positioned at a position, another kind of different valve stroke can be realized when adjusting the 3rd center of rotation and being located at another various location.The valve stroke of the first valve can be identical or different with the valve stroke of duaspiracle.Therefore according to the different applying working conditions of electromotor, the valve stroke of the first valve and duaspiracle can be changed.
The mode realizing lift range variable in the embodiment of the present invention is different from the mode that use assembled camshaft in prior art realizes lift range variable, will not have the cam of different molded line to drive each valve link motion that the parts such as camshaft, each valve connecting rod are produced percussion due to change, extend the service life of the related components such as camshaft, each valve connecting rod；And owing to multiple cam with different molded line will not be arranged on camshaft, therefore with each swing arm in the embodiment of the present invention with the use of camshaft structure simple, quality is little, reduces processing cost and the fuel consumption of electromotor.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below.
The STRUCTURE DECOMPOSITION schematic diagram of a kind of variable valve lift driving device that Fig. 1 provides for the embodiment of the present invention；
The STRUCTURE DECOMPOSITION schematic diagram of the another kind of variable valve lift driving device that Fig. 2 provides for the embodiment of the present invention；
The structural representation of a kind of power-driven mechanism that Fig. 3 provides for the embodiment of the present invention；
The structural representation of a kind of first swing arm adjusting bracket that Fig. 4 provides for the embodiment of the present invention；
The structural representation of a kind of second swing arm adjusting bracket that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is explicitly described.
The STRUCTURE DECOMPOSITION schematic diagram of the variable valve lift driving device that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, this variable valve lift driving device, including: the first valve 11 and duaspiracle 11 ＇, the the first valve connecting rod 12 being connected with the first valve 11 and duaspiracle connecting rod 12 ＇ being connected with duaspiracle 11 ＇, the first valve rocker 13 being connected with the first valve connecting rod 12 and duaspiracle rocking arm 13 ＇ being connected with duaspiracle connecting rod 12 ＇, and the camshaft 14 that driving the first valve 11 and duaspiracle 11 ＇ open or close, the first swing arm 15 and the first swing arm adjusting bracket 16 it is provided with between the first valve rocker 13 and camshaft 14, the second swing arm 15 ＇ and the second swing arm adjusting bracket 16 ＇ it is provided with between duaspiracle rocking arm 13 ＇ and camshaft 14；First swing arm 15 is provided with the first center of rotation 151 and the second center of rotation 152, second swing arm 15 ＇ is provided with the 3rd center of rotation 151 ＇ and the 4th center of rotation 152 ＇, first swing arm adjusting bracket 16 is provided with the first drive division 162 being flexibly connected with the first center of rotation 151, and the second swing arm adjusting bracket 16 ＇ is provided with the second drive division 162 ＇ being flexibly connected with the 3rd center of rotation 151 ＇.
Camshaft 14 drives the first swing arm 15 to swing to drive the first valve connecting rod 12 straight reciprocating motion to realize opening or closing of the first valve 11 around the first center of rotation 151 when rotating, and drives the second swing arm 15 ＇ to swing to drive duaspiracle connecting rod 12 ＇ straight reciprocating motion to realize opening or closing of duaspiracle 11 ＇ around the 3rd center of rotation 151 ＇ when camshaft 14 rotates.
First swing arm adjusting bracket 16 rotates to drive the first drive division 162 to rotate around the first axle 161 around self the first axle 161 and regulates the position of the first center of rotation 151 simultaneously, and the second swing arm adjusting bracket 16 ＇ rotates the position simultaneously regulating the 3rd center of rotation 151 ＇ around the second axle 161 ＇ to drive the second drive division 162 ＇ to rotate around self the second axle 161 ＇.
A kind of valve stroke so can be realized when the first center of rotation is positioned at a position, another kind of different valve stroke can be realized when adjusting the first center of rotation and being located at another various location, a kind of valve stroke can be realized when the 3rd center of rotation is positioned at a position, another kind of different valve stroke can be realized when adjusting the 3rd center of rotation and being located at another various location.The valve stroke of the first valve can be identical or different with the valve stroke of duaspiracle.Therefore according to the different applying working conditions of electromotor, the valve stroke of the first valve and duaspiracle can be changed.
The mode realizing lift range variable in the embodiment of the present invention is different from the mode that use assembled camshaft in prior art realizes lift range variable, will not have the cam of different molded line to drive each valve link motion that the parts such as camshaft, each valve connecting rod are produced percussion due to change, extend the service life of the related components such as camshaft, each valve connecting rod；And owing to multiple cam with different molded line will not be arranged on camshaft, therefore with each swing arm in the embodiment of the present invention with the use of camshaft structure simple, quality is little, reduces processing cost and the fuel consumption of electromotor.
In the variable valve lift driving device that above-described embodiment provides, first swing arm adjusting bracket 16 is hinged on the parts that the position of electromotor is fixing, such as it is hinged on the lid of electromotor, first swing arm adjusting bracket 16 can rotate around hinged place, therefore the center of the first axle 161 is this hinged place, and this center maintains static.When the first center of rotation 151 is positioned at primary importance, make the first swing arm adjusting bracket 16 around a certain angle of rotation of the first axle 161 so that the first center of rotation 151 is positioned at another second position being different from primary importance.
Second center of rotation 152 can be coaxially disposed with the first axle 161 of the first swing arm adjusting bracket 16, so, if know the first center of rotation 151 from primary importance to the second position during, the angle value that first swing arm adjusting bracket 16 is turned over around the first axle 161, the most just can learn the angle value that the first swing arm 15 is turned over around the second center of rotation 152.Certainly, if knowing the angle value that the first swing arm 15 is turned over around the second center of rotation 152, the angle value that the first swing arm adjusting bracket 16 is turned over can the most just be learnt around the first axle 161.
In the variable valve lift driving device that above-described embodiment provides, second swing arm adjusting bracket 16 ＇ is hinged on the parts that the position of electromotor is fixing, such as it is hinged on the lid of electromotor, second swing arm adjusting bracket 16 ＇ can rotate around hinged place, therefore the center of the second axle 161 ＇ is this hinged place, and this center maintains static.When the 3rd center of rotation 151 ＇ is positioned at primary importance, make the second swing arm adjusting bracket 16 ＇ around a certain angle of rotation of the second axle 161 ＇ so that the 3rd center of rotation 151 ＇ is positioned at another second position being different from primary importance.
4th center of rotation 152 ＇ can be coaxially disposed with second axle 161 ＇ of the second swing arm adjusting bracket 16 ＇, so, if know the 3rd center of rotation 151 ＇ from primary importance to the second position during, the angle value that second swing arm adjusting bracket 16 ＇ is turned over around the second axle 161 ＇, the most just can learn the angle value that the second swing arm 15 ＇ is turned over around the 4th center of rotation 152 ＇.Certainly, if knowing the angle value that the second swing arm 15 ＇ is turned over around the 4th center of rotation 152 ＇, the angle value that the second swing arm adjusting bracket 16 ＇ is turned over can the most just be learnt around the second axle 161 ＇.
As shown in Figure 2, in the variable valve lift driving device that above-described embodiment provides, the bearing block 21 between camshaft the 14, first swing arm adjusting bracket 16 and the second swing arm adjusting bracket 16 ＇ can also be included, bearing block 21 has connecting portion 211, and the first axle 161 and the second axle 161 ＇ is flexibly connected with connecting portion 211 jointly.
Camshaft 14 can be played supporting role by so bearing block 21 so that the weight capacity of camshaft is more preferable.Simultaneously, bearing block is connected on engine cylinder lid, the first axle 161 being flexibly connected with connecting portion on it 211 and the second axle 161 ＇ position are fixed, so that the position of the first swing arm adjusting bracket 16 and the second swing arm adjusting bracket 16 ＇ is fixed so that the structure of above-mentioned variable valve lift driving device is simpler, compact.
In the variable valve lift driving device that above-described embodiment provides, refer again to Fig. 2, power-driven mechanism 17 can also be included, power-driven mechanism 17 can drive the first swing arm adjusting bracket 16 to rotate to drive the first drive division 162 to rotate around the first axle 161 around self the first axle 161 and regulate the position of the first center of rotation 151 simultaneously, the second swing arm adjusting bracket 16 ＇ can also be driven to rotate to drive the second drive division 162 ＇ to rotate the position of regulation the 3rd center of rotation 151 ＇ simultaneously around the second axle 161 ＇ around the second axle 161 ＇ of self, make the first swing arm adjusting bracket 16, second swing arm adjusting bracket 16 ＇ rotating effect is more preferable.
In the variable valve lift driving device that above-described embodiment provides, first swing arm adjusting bracket 16 is provided with the first gap 163, second swing arm adjusting bracket 16 ＇ is provided with the second gap 163 ＇, first gap 163 and the second gap 163 ＇ is used for connecting power-driven mechanism 17, thus the parts in drive mechanism 17 can be contained in the first gap 163 and the second gap 163 ＇, save space so that the structure of variable valve lift driving device is compacter.
In the variable valve lift driving device that above-described embodiment provides, the surface configuration of the first gap 163 and the second gap 163 ＇ can be all U-shaped.U-shaped gap is prone to processing, also allows for card and sets drive mechanism 17.Certainly, the surface configuration of the first gap 163 and the second gap 163 ＇ is not limited to U-shaped, it is also possible to be prone to the shape of processing for other.
In the variable valve lift driving device that above-described embodiment provides, the surface configuration of the first gap 163 can differ with the surface configuration of the second gap 163 ＇.Owing to the surface configuration of the first gap 163 with the second gap 163 ＇ differs, the surface of i.e. first gap the 163, second gap 163 ＇ is the most different from power-driven mechanism contact point, then the position of the first drive division 162 and the second drive division 162 ＇ on the first swing arm adjusting bracket 16 and the second swing arm adjusting bracket 16 ＇ also just different from so that make the first valve 11 different from the valve stroke of duaspiracle 11 ＇.That is the first valve 11 and the different opening of duaspiracle 11 ＇ it are capable of.
Therefore, variable valve lift driving device in the application embodiment of the present invention, the electromotor the first valve under different operating modes in same cylinder can be made different with duaspiracle lift, the aperture being capable of under certain operating mode regulating two valves inconsistent improves electromotor efficiency of combustion of fuel under this operating mode, thus provides the dynamic property of electromotor, economy and idle stability.It is also possible to reduce the discharge capacity of motor exhaust.
In the variable valve lift driving device that above-described embodiment provides, as it is shown on figure 3, power-driven mechanism 17 includes crank shaft 31 and the servomotor (not shown) driving crank shaft 31 to rotate；Crank shaft 31 includes two line parts 311 being coaxially disposed and between two line parts 311 and the fixing crank throw portion 312 connecting two line parts, the axis of two line parts 311 parallel with the axis in crank throw portion 312 and between there is the distance specified, the first gap 163 and the second gap 163 ＇ equal clamping crank throw portion 312.
If crank throw portion 312 rotates relative to the first gap 163 or the second gap 163 ＇, part energy will be lost, transmit the inefficient of power.In the present embodiment, the first gap 163 and the second gap 163 ＇ all with crank throw portion 312 clamping on crank shaft 31.I.e. all without relative motion between crank throw portion 312 and the first gap 163 or the second gap 163 ＇, so that crank throw portion 312 directly can pass to the first swing arm adjusting bracket 16 and the second swing arm adjusting bracket 16 ＇ power, energy loss is less, and transmission efficiency is higher.
In the variable valve lift driving device that above-described embodiment provides, see Fig. 4 and Fig. 5, first drive division 162 can also include the first through hole 41 being located on the first swing arm adjusting bracket 16 and the first drive shaft 42 being located in the first through hole 41, and the first drive shaft 42 is flexibly connected with the first center of rotation 151；Second drive division 162 ＇ includes the second through hole 51 being located on the second swing arm adjusting bracket 16 ＇ and the second drive shaft 52 being located in the second through hole 51, and the second drive shaft 52 is flexibly connected with the 3rd center of rotation 151 ＇.
Such first swing arm 15 can rotate around the first drive shaft 42, and the first drive shaft 42 and the first center of rotation 151 share an axle, guarantee the difficulty that the first drive shaft 42 is coaxial with the first center of rotation 151 when greatly reducing assembling.Similarly, the second swing arm 15 ＇ can rotate around the second drive shaft 52, and the second drive shaft 52 and the 3rd center of rotation 151 ＇ shares an axle, guarantees the second drive shaft 52 and the 3rd difficulty coaxial for center of rotation 151 ＇ when greatly reducing assembling.
Additionally, the power on the first swing arm adjusting bracket 16 directly can be passed to the first swing arm 15 with its active link by the first drive shaft 42, and without arranging the part of other transmission power again.Being not difficult to find out, the second drive shaft 52 is also as a same reason.
In the variable valve lift driving device that above-described embodiment provides, referring again to Fig. 2 the second center of rotation 152 can be the third through-hole 153 being located at the first swing arm 15, and the 4th center of rotation 152 ＇ can be fourth hole 153 ＇ being located at the second swing arm；Being provided with the first swing arm roller 154 in third through-hole 153, the first swing arm roller 154 contacts with the first cam 141 on camshaft 14；Second swing arm roller 154 ＇, the second swing arm roller 154 ＇ are installed in fourth hole 153 ＇ contact with the second cam 142 on camshaft 14.
The position of the second center of rotation 152 and the 4th center of rotation 152 ＇ can be fixed by such first swing arm roller 154 and the second swing arm roller 154 ＇ dexterously temporarily, to drive the first swing arm 15 to rotate around the second center of rotation 152, and the second swing arm 15 ＇ rotating around the 4th center of rotation 152 ＇.
Being specially to be resisted against on other parts contacted with them the first swing arm roller 154 with the second swing arm roller 154 ＇ makes the first swing arm roller 154 and the second swing arm roller 154 ＇ maintain static.First swing arm roller 154 can contact with the first cam 141 on camshaft 14, and the second swing arm roller 154 ＇ contacts with the second cam 142 on camshaft 14.Then the first swing arm 15 and the second swing arm 15 ＇ is driven to rotate so that the first swing arm 15 can rotate around the second center of rotation 152, the second swing arm 15 ＇ can rotate around the 4th center of rotation 152 ＇.
Rotate around the second center of rotation 152 in the first swing arm 15, the second swing arm 15 ＇ can around the 4th center of rotation 152 ＇ rotate motion complete after, camshaft 14 rotates, holding against the first swing arm roller 154 greatly of the first cam 141 on camshaft 14, holding against the second swing arm roller 154 ＇ greatly of second cam 142, thus the first swing arm roller 154 drives the first swing arm 15 to swing around the first center of rotation 151, the second swing arm 15 ＇ swings around the 3rd center of rotation 151 ＇.
The above; being only the detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; the change that can readily occur in or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (11)
1. a variable valve lift driving device, including: the first valve and duaspiracle, the the first valve connecting rod being connected with the first valve and the duaspiracle connecting rod being connected with duaspiracle, the first valve rocker being connected with the first valve connecting rod and the duaspiracle rocking arm being connected with duaspiracle connecting rod, and the camshaft that driving the first valve and duaspiracle are opened or closed, it is characterized in that, the first swing arm and the first swing arm adjusting bracket it is provided with between the first valve rocker and camshaft, the second swing arm and the second swing arm adjusting bracket it is provided with between duaspiracle rocking arm and camshaft；Described first swing arm is provided with the first center of rotation and the second center of rotation, described second swing arm is provided with the 3rd center of rotation and the 4th center of rotation, described first swing arm adjusting bracket is provided with the first drive division being flexibly connected with described first center of rotation, and described second swing arm adjusting bracket is provided with the second drive division being flexibly connected with described 3rd center of rotation；
Drive the first swing arm to swing to drive the first valve link linear reciprocating motion to realize opening or closing of the first valve around the first center of rotation during cam axle, and during cam axle, drive the second swing arm to swing to drive the reciprocating motion of duaspiracle link linear to realize opening or closing of duaspiracle around the 3rd center of rotation；
First swing arm adjusting bracket rotates to drive the first drive division to regulate the position of the first center of rotation around the first axle rotation around the first axle of self simultaneously, and the second swing arm adjusting bracket rotates to drive the second drive division to rotate the position of regulation the 3rd center of rotation simultaneously around the second axle around the second axle of self.
Variable valve lift driving device the most according to claim 1, it is characterised in that described first axle is coaxially disposed with described second center of rotation.
Variable valve lift driving device the most according to claim 1, it is characterised in that described second axle is coaxially disposed with described 4th center of rotation.
Variable valve lift driving device the most according to claim 1, it is characterized in that, also include the bearing block between described camshaft, the first swing arm adjusting bracket and the second swing arm adjusting bracket, described bearing block has connecting portion, described first axle and described second axle and is jointly flexibly connected with described connecting portion.
5. according to the variable valve lift driving device described in any one of claim 1-4, it is characterized in that, also include power-driven mechanism, described power-driven mechanism, for driving the first swing arm adjusting bracket to rotate to drive the first drive division to regulate the position of the first center of rotation around the first axle rotation around the first axle of self simultaneously, is additionally operable to the position driving the second swing arm adjusting bracket simultaneously to regulate the 3rd center of rotation around the second axle to drive the second drive division to rotate around the second axle rotation of self.
Variable valve lift driving device the most according to claim 5, it is characterized in that, described first swing arm adjusting bracket is provided with the first gap, and described second swing arm adjusting bracket is provided with the second gap, and described first gap and the second gap are used for connecting power-driven mechanism.
Variable valve lift driving device the most according to claim 6, it is characterised in that the surface configuration of described first gap and described second gap is U-shaped.
Variable valve lift driving device the most according to claim 6, it is characterised in that the surface configuration of described first gap differs with the surface configuration of described second gap.
Variable valve lift driving device the most according to claim 6, it is characterised in that described power-driven mechanism includes crank shaft and the servomotor driving described crank shaft to rotate；Described crank shaft includes two line parts being coaxially disposed and between two line parts and the fixing crank throw portion connecting two line parts, the axis of said two line part parallel with the axis in described crank throw portion and between there is crank throw portion described in the distance specified, described first gap and the equal clamping of the second gap.
10. according to the variable valve lift driving device described in any one of claim 1-4, it is characterized in that, described first drive division includes the first through hole being located on described first swing arm adjusting bracket and is located at the first drive shaft in described first through hole, and described first drive shaft is flexibly connected with described first center of rotation；
Described second drive division includes the second through hole being located on described second swing arm adjusting bracket and is located at the second drive shaft in described second through hole, and described second drive shaft is flexibly connected with described 3rd center of rotation.
11. according to the variable valve lift driving device described in any one of claim 1-4, it is characterised in that the second center of rotation is the third through-hole being located at the first swing arm, and the 4th center of rotation is the fourth hole being located at the second swing arm；Being provided with the first swing arm roller in third through-hole, described first swing arm roller contacts with the first cam on described camshaft；Being provided with the second swing arm roller in fourth hole, described second swing arm roller contacts with the second cam on described camshaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310014477.0A CN103925032B (en) | 2013-01-15 | 2013-01-15 | A kind of variable valve lift driving device |
| PCT/CN2013/090809 WO2014110968A1 (en) | 2013-01-15 | 2013-12-28 | Driving apparatus for variable valve lift |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310014477.0A CN103925032B (en) | 2013-01-15 | 2013-01-15 | A kind of variable valve lift driving device |
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| CN103925032A CN103925032A (en) | 2014-07-16 |
| CN103925032B true CN103925032B (en) | 2016-08-03 |
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| CN103925032A (en) | 2014-07-16 |
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