CN104989477B - A kind of self-lubricating type two-stage variable Formula V VL rocking arms - Google Patents
A kind of self-lubricating type two-stage variable Formula V VL rocking arms Download PDFInfo
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- CN104989477B CN104989477B CN201510422785.6A CN201510422785A CN104989477B CN 104989477 B CN104989477 B CN 104989477B CN 201510422785 A CN201510422785 A CN 201510422785A CN 104989477 B CN104989477 B CN 104989477B
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- lock pin
- rocking arm
- feed hole
- fuel feed
- return spring
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Abstract
The present invention provides a kind of self-lubricating type two-stage variable Formula V VL rocking arms, including quiet rocking arm, lock pin and motion rocker arm, the first fuel feed hole and the second oily passage are opened up on quiet rocking arm, first oily passage and lock pin pressing portion are set on lock pin, lock pin shoe cream room is formed between the lock pin pressing portion and lock pin mounting hole, the second fuel feed hole is opened up on return spring holder, first fuel feed hole, first oily passage, second fuel feed hole, return spring holder mounting groove, insertion constitutes rocking arm self-lubricating passage successively between second oily passage, first fuel feed hole is communicated with lock pin shoe cream room simultaneously, described second oily channel outlet contacts the insertion of R faces with valve stem with quiet rocking arm.The present invention can be contacted in the case that R faces additionally need not increase lubricating system in quiet rocking arm with valve stem, remain able to be lubricated the moving component of rocking arm, the frictional dissipation in the rocking arm course of work and contact kinetic energy loss are effectively alleviated, the abrasion durability degree of rocking arm is improved.
Description
Technical field
The present invention relates to a kind of VVL rocking arms, a kind of self-lubricating type two-stage variable Formula V VL of internal combustion engine is especially for
Rocking arm.
Background technology
VVL (English Variable Valve Lift's writes a Chinese character in simplified form, and means lift range variable) use, makes engine exist
High velocity and low regime can be met the valve stroke of demand, so as to improve high engine speeds power and low speed torque.Two
Level lift range variable technology can make engine selectively match high or low valve stroke amount under different rotating speeds, with
Further torque output of the lifting engine in low speed, and power output of the lifting engine in high rotating speed.When starting
Machine is when high rotating speed is run, and the larger valve stroke amount of selection matching can significantly increase inspiratory capacity, so as to improve engine
Power output during high rotating speed；When engine is run in the slow-speed of revolution, the less valve stroke amount of selection matching can improve combustion
The burning velocity of oil, so that torque output when improving low engine speeds.
Two-stage variable Formula V VL rocking arms are the core components of two-stage variable valve lift system, and it is according to engine controller
The control signal sent controls rocking arm lock pin drive mechanism, and controlled by the opening of lock pin, lockup state rocking arm it is high,
Low lift condition, so as to reach the purpose that valve stroke is controlled in the range of two-stage.Existing two-stage variable Formula V VL rocking arms are in work
Following defect is primarily present during work：
First, the roller surface of existing two-stage variable Formula V VL rocking arms is directly contacted with the cam face of camshaft, VVL
System can not lubricate directly to rocker-arm roller, therefore, inevitable that rubbing between the roller of rocking arm and the cam of camshaft
Wipe and contact kinetic energy loss.One layer of coating would generally be set by being contacted in the quiet rocking arm of rocking arm with valve stem on R faces, pass through the coating
It can play a part of reducing friction and improve abrasion durability degree, still, on contact R faces, between quiet rocking arm and valve stem
It is still direct contact, therefore, in the rocking arm course of work, this direct contact can make rocking arm because being impacted and because of friction
Cause kinetic energy loss；Simultaneously as the quiet rocking arms of VVL contact the unlubricated design in R faces with valve stem, so as to cause quiet rocking arm and valve
Bar contact R faces need extraly to increase lubricating system, add design, the difficulty of processing of engine cylinder cover.
Second, in existing two-stage variable Formula V VL rocking arms, the working end diameter of lock pin therein is by lock pin installation end
The influence of diameter and lock pin reset space, it is impossible to the plastic deformation of lock pin is directly solved the problems, such as by increasing diameter, therefore, lock
Pin is easy to cause lock pin to fail because of plastic deformation.
3rd, in existing two-stage variable Formula V VL rocking arms, the resetting means of motion rocker arm typically uses external torsion spring side
Formula, is unfavorable for the arrangement in space, and adds rocking arm quality.Further, since lock pin main body is integrated with lock pin spring seat
Processing and manufacturing, its processing technology is more complicated, and difficulty of processing is larger, causes the processing cost of lock pin higher.
The content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of self-lubricating type two-stage for the problem of existing for prior art
Type variable VVL rocking arms, mitigate the frictional dissipation of rocking arm, reduce the application cost of rocking arm.
The technical problem to be solved in the present invention is realized using following technical scheme：A kind of self-lubricating type two-stage variable formula
VVL rocking arms, including quiet rocking arm, lock pin and motion rocker arm, the lock pin mounting hole on quiet rocking arm are slidably socketed with lock pin, described
Also open up the first fuel feed hole, return spring holder mounting groove and the second oily passage on quiet rocking arm, the return spring holder mounting groove with
Return spring holder is slidably socketed, and back-moving spring is set between return spring holder mounting groove and return spring holder, in back-moving spring
The second fuel feed hole is opened up on seat, the first oily passage and lock pin pressing portion are set on lock pin, the lock pin pressing portion is pacified with lock pin
Fill and lock pin shoe cream room formed between hole, first fuel feed hole, the first oily passage, the second fuel feed hole, return spring holder mounting groove,
Insertion constitutes rocking arm self-lubricating passage successively between second oily passage, and first fuel feed hole is communicated with lock pin shoe cream room simultaneously,
Described second oily channel outlet contacts the insertion of R faces with valve stem with quiet rocking arm.
Preferably, the first described fuel feed hole, the first oily passage, the second fuel feed hole, the second oily passage centerline in
On same plane.
Preferably, described lock pin is fixedly connected into T-shaped structure by lock pin working end and lock pin guide end, and the lock pin is led
It is fixedly connected to end with lock pin spring seat, the lock being socketed with lock pin guide end is installed between lock pin spring seat and lock pin working end
Sell spring, the first described oily passage insertion lock pin working end and lock pin guide end.
Preferably, described lock pin working end, lock pin guide end are cylindrical structure, and the external diameter of lock pin working end is big
In the external diameter of lock pin guide end.
Preferably, set on described lock pin working end into oil ring groove, it is described enter oil ring groove mutually passed through with the first oily passage
It is logical.
Preferably, convex shoulder is set on described return spring holder, and second fuel feed hole is located at convex shoulder and return spring holder
Between bottom lock end, annular groove, the annular groove and first are formed between the return spring holder and quiet rocking arm at convex shoulder
Oily passage is communicated.
Preferably, the second described fuel feed hole is the radial direction through hole communicated with return spring holder inner chamber.
Preferably, the second described fuel feed hole sets several, and the second fuel feed hole is respectively positioned on the same of return spring holder
In sagittal plane.
Compared with prior art, the beneficial effects of the invention are as follows：Due to the first fuel feed hole, the first oily passage, the second oil-feed
Insertion composition rocking arm self-lubricating passage, and the second oily channel outlet successively between hole, return spring holder mounting groove, the second oily passage
The insertion of R faces is contacted with valve stem with quiet rocking arm, therefore, in the rocking arm course of work, is entered from the first fuel feed hole inside rocking arm
Lubricating oil can by the rocking arm self-lubricating passage to cause between return spring holder and quiet rocking arm, quiet rocking arm contacts with valve stem
R faces are lubricated, so as to be contacted in quiet rocking arm with valve stem in the case that R faces additionally need not increase lubricating system, still can
Enough moving components to rocking arm are lubricated, so as to effectively alleviate the frictional dissipation in the rocking arm course of work and contact kinetic energy
Loss, improves the working environment of rocking arm and valve tappet, improves the abrasion durability degree of rocking arm, and reduce engine cylinder cover
Design, difficulty of processing, therefore so that the application cost of rocking arm is effectively reduced.
Brief description of the drawings
Fig. 1 is a kind of unitary construction figure (front view) of self-lubricating type two-stage variable Formula V VL rocking arms of the invention.
Fig. 2 is a kind of unitary construction figure (top view) of self-lubricating type two-stage variable Formula V VL rocking arms of the invention.
Fig. 3 is the structural map of quiet rocking arm in Fig. 1.
Fig. 4 is the structural map of return spring holder in Fig. 1.
Fig. 5 is the structural map of lock pin in Fig. 1.
Marked in figure：1- alignment pins, the quiet rocking arms of 2-, 3- return spring holders, 4- back-moving springs, the quiet rocking arms of 5- connect with valve stem
Touch R faces, 6- rollers, 7- bearing pins, 8- needle rollers, 9- lock pins, 10- motion rocker arms, 11- lock pin shoe cream rooms, 12- lock pin springs, 13- lock pins
Spring base, 14- annular grooves, the fuel feed holes of 21- first, 22- lock pin mounting holes, 23- return spring holder mounting grooves, the oil of 24- second is logical
Road, 31- convex shoulders, the fuel feed holes of 32- second, the oily passages of 91- first, 92- lock pins working end, 93- lock pins stopper section, 94- lock pins are led
Xiang Duan, 95- lock pin pressing portion, 96- enter oil ring groove, 101- motion rocker arm crossbeams.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and specific implementation
The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
A kind of self-lubricating type two-stage variable Formula V VL rocking arms as shown in Figure 1 and Figure 2, mainly including quiet rocking arm 2, back-moving spring
Seat 3, lock pin 9 and motion rocker arm 10, are pivotally connected into by alignment pin 1 and can relatively rotated between quiet rocking arm 2 and motion rocker arm 10 therein
Rocker body, the mutually riveting of the quiet central part of rocking arm 2 and bearing pin 7 fixed, and the bearing pin 7 is collectively constituted with roller 6, needle roller 8
Roll wheel assembly, the needle roller 8 is located between bearing pin 7 and roller 6.It is located at rolling respectively as shown in figure 3, being offered on quiet rocking arm 2
The lock pin mounting hole 22 and return spring holder mounting groove 23 of 6 both sides are taken turns, at the socket arrangement that quiet rocking arm 2 and tappet contact with each other
The first fuel feed hole 21 is opened up, is communicated between first fuel feed hole 21 and lock pin mounting hole 22, second is also opened up on quiet rocking arm 2
Oily passage 24, the described second oily entrance point of passage 24 is communicated with return spring holder mounting groove 23, and the described second oily passage 24 is exported
End contacts the insertion of R faces 5 with valve stem with quiet rocking arm；Described return spring holder mounting groove 23 is slidably socketed with return spring holder 3,
Back-moving spring 4 is set between return spring holder mounting groove 23 and return spring holder 3, back-moving spring is caused by back-moving spring 4
Connection is contacted between 3 blind end of seat and the motion rocker arm crossbeam 101 on motion rocker arm 10.By return spring holder mounting groove 23, reset
Spring base 3 and back-moving spring 4 have collectively constituted the reset assembly of motion rocker arm 10, i.e. when motion rocker arm 10 is clockwise relative to quiet rocking arm 2
During rotation, the compressing return spring holder 3 of motion rocker arm crossbeam 101 simultaneously causes back-moving spring 4 by compression, the reset after compression
Spring 4 will produce the elastic force of opposite direction to motion rocker arm crossbeam 101, to cause motion rocker arm 10 can be with normal reset.Motion rocker arm 10
Resetting means use said structure, traditional external torsion spring mode can be cancelled, so that advantageously in rocking arm overall structure
It is compact, and alleviate the quality of rocking arm.
As shown in figure 4, described return spring holder 3 is in the hollow circular cylinder shape that one end is closed, opened on return spring holder 3
Provided with the second fuel feed hole 32, second fuel feed hole 32 is the radial direction through hole communicated with the inner chamber of return spring holder 3.As shown in figure 5,
Described lock pin 9 connects T-shaped by being the lock pin working end 92 of cylindrical structure, lock pin guide end 94 by integrated molding
Structure, and external diameter of the external diameter more than lock pin guide end 94 of lock pin working end 92；Lock pin 9 and lock pin spring seat 13, lock pin spring
12 collectively constitute the valve stroke switching lock pin component of rocking arm, lock pin working end 92 therein and the slip cap of lock pin mounting hole 22
Connect, be fixedly connected between the lock pin guide end 94 and lock pin spring seat 13 with interference fit or welding manner, in lock
Sell the lock pin spring 12 installed and be socketed with lock pin guide end 94 between spring base 13 and lock pin working end 92.Using this split type
The valve stroke switching lock pin component of structure, not only make it that the processing of lock pin 9 and lock pin spring seat 13 is simpler, processing cost
It is lower, moreover, assembling more facilitates.In addition, being additionally provided with the first oily passage 91 and round table-like lock pin pressing portion on lock pin 9
95, the first oily insertion lock pin working end 92 of passage 91 and lock pin guide end 94.Because the external diameter of lock pin working end 92 is more than
The external diameter of lock pin guide end 94, therefore, it can on the bearing of trend of lock pin guide end 94 directly process lock pin working end 92
Go out the lock pin pressing portion 95 of a conical round table shape, the taper surface of the lock pin pressing portion 95 is the stress of lock pin pressing portion 95
Face, the end face of the relatively small end of the lock pin pressing portion 95 is lock pin stopper section 93, as shown in Figure 5.Lock pin 9 is using such knot
Structure can cause the simple in construction, compact of lock pin 9, and handling ease, processing cost is low.Lock pin pressing portion 95 therein is pacified with lock pin
Formation lock pin shoe cream room 11 between hole 22 is filled, as shown in Figure 1.The described oily passage 91 of first fuel feed hole 21, first, the second oil-feed
Insertion constitutes the self-lubricating passage of rocking arm, described first successively between hole 32, the oily passage 24 of return spring holder mounting groove 23, second
Fuel feed hole 21 is communicated with lock pin shoe cream room 11 simultaneously.
After lubricating oil enters lock pin shoe cream room 11, the oil pressure of lubricating oil acts on lock pin pressing portion 95, if lock pin is pushed away
The axial oil pressure that splenium 95 is born exceedes the elastic force of lock pin spring 12, and lock pin working end 92 will be in the institute of lock pin mounting hole 22
Slided to the right relative to quiet rocking arm 2 in the space of restriction.When the Lubricating Oil pressure drop in lock pin shoe cream room 11 is low, lock pin pressing portion
The 95 axial oil pressures born are also decreased, and lock pin 9 shakes under the Flexible Reset power effect of lock pin spring 12 relative to quiet
Arm 2 is slided to the left, and can be effectively prevented from lock pin pressing portion 95 by lock pin stopper section 93 occurs directly to contact with quiet rocking arm 2
Impact, to ensure the functional reliability of lock pin 9.
The present invention rocking arm in the course of the work, slip cap between lock pin working end 92 therein and lock pin mounting hole 22
Connect, therefore, lock pin component can be moved between locking, unlocked position.When the oil pressure from hydraulic tappet is in low oil pressure shape
During state, lock pin 9 is in released state, now, and the lubricating oil oil pressure in lock pin shoe cream room 11 is not enough to promote lock pin 9 to transport to the right
Dynamic, the first oily passage 91 is connected with the first fuel feed hole 21, and then, the lubricating oil from tappet can pass through the quilt of the first fuel feed hole 21
It is introduced into the first oily passage 91, fuel feeding is carried out to lock pin shoe cream room 11 simultaneously also by the first fuel feed hole 21, it is logical into the first oil
Lubricating oil in road 91 is guided and sprayed to the surface of roller 6 by the first oily passage 91.In order that lubrication of the injection to the surface of roller 6
Oil mass is tried one's best many, and ensures that flow through the lubricating oil on the surface of roller 6 as often as possible can enter back-moving spring from the second fuel feed hole 32
In the inner chamber of seat 3, the diameter of the first oily passage 91 is smaller and unsuitable excessive, to cause in low oil pressure state, by the
The lubricating oil of one oily passage 91 can be injected into the upper surface of roller 6 with larger flow velocity, so that pair roller 6 is moistened
It is sliding.Because the second fuel feed hole 32 is the radial direction through hole that is communicated with the inner chamber of return spring holder 3, therefore, roller 6 can be by above it
A part for lubricating oil is splashed by the second fuel feed hole 32 in the inner chamber of return spring holder 3, meanwhile, also by the lubricating oil above it
Another part splash return spring holder 3 and the quiet relative sliding contact face of rocking arm 2 gap in, with to return spring holder 3 with
Relative sliding contact face between quiet rocking arm 2 is lubricated, so as to alleviate the friction between return spring holder 3 and quiet rocking arm 2
Loss, is conducive to improving the reliability and durability of the reset assembly mechanism of motion rocker arm 10.Profit into the inner chamber of return spring holder 3
Lubricating oil flows out to quiet rocking arm by the second oily slow guiding of passage 24 again and contacted with valve stem on R faces 5, so as to quiet rocking arm and gas
Door rod contact R faces 5 are effectively lubricated, therefore, and the frictional dissipation and contact effectively alleviated in the rocking arm course of work is dynamic
It can be lost, improve the abrasion durability degree of rocking arm, improve the working environment of rocking arm and valve tappet.
It should be noted that, lock pin working end 92 therein is pacified with lock pin due to rocking arm of the invention in the course of the work
Dress is slidably socketed between hole 22, and therefore, lock pin working end 92 may occur in sliding process relative to lock pin mounting hole 22
Rotate, the first oily passage 91 is misplaced with the first fuel feed hole 21, so as to cause the lubricating oil entered in the first oily passage 91
Amount is not enough, influences the lubricant effect of rocking arm.In order to ensure that enough lubricants capacities can enter in the first oily passage 91, it is ensured that shake
The lubrication needs of arm, can be set on lock pin working end 92 into oil ring groove 96, it is described enter the oily passage 91 of oil ring groove 96 and first
It is mutually communicated, as shown in Figure 1, shown in Figure 5.Therefore, one can be collectively forming by entering oil ring groove 96 and the wall of lock pin mounting hole 22
Annular oil suction chamber, can ensure the oil inlet quantity of the first oily passage 91 using the annular oil suction chamber, so that it is guaranteed that rocking arm work when institute
The lubricants capacity needed.
In quiet rocking arm 2, because the second oily passage 24 is provided in the bottom of return spring holder mounting groove 23 and is shaken close to quiet
Arm contacts R faces 5 with valve stem, and the second oily one end of passage 24 has connected the intracavity bottom of return spring holder 3, to ensure back-moving spring
Lubricating oil in 3 inner chambers of seat can be directed out completely, it is to avoid lubricating oil is stored within return spring holder mounting groove 23, should
The second oily other end of passage 24 then connects quiet rocking arm and R faces 5 is contacted with valve stem but R faces are not contacted with valve stem by the quiet rocking arm
5, therefore, the lubricating oil being directed by the second oily passage 24 slowly infiltrates in the presence of gravity and rocking arm oscillating motion
R faces 5 are contacted with valve stem to the quiet rocking arm, so that it is by sufficient lubrication.
When the oil pressure from hydraulic tappet is in high oil pressure state, lubricating oil is directed into after lock pin shoe cream room 11,
The lubricating oil of high oil pressure in lock pin shoe cream room 11 will promote lock pin 9 to move right, and lock pin 9 is in locking shape
State, now, the oil supply gallery between the first oily fuel feed hole 21 of passage 91 and first are cut off, i.e., the entrance quilt of the first oily passage 91
Cut-out, to ensure lock pin 9 will not be influenceed to work the pressure release of lock pin shoe cream room 11.Therefore, the self-lubricating passage quilt of whole rocking arm
Cut-out, the surface of roller 6, return spring holder 3 contact R faces 5 with valve stem not with the quiet relative sliding contact face of rocking arm 2 and quiet rocking arm
More lubricating oil are received again, but rely on the lubricating oil remained before the switch operating of lock pin 9 to keep lubrication.
First the 21, first oily passage 91 of fuel feed hole, the center line of second the 32, second oily passage 24 of fuel feed hole in the present invention
It is preferably on same plane, can so ensures that the flow velocity of lubricating oil in the self-lubricating passage of whole rocking arm is uniform, carry
The lubricant effect of high rocking arm.If it should be noted that do not prevented between return spring holder 3 and return spring holder mounting groove 23
Turn design, in the rocking arm course of work, return spring holder 3 can be installed relative to return spring holder mounting groove 23 around return spring holder
The center line of groove 23 is rotated, and the through hole direction for making the second fuel feed hole 32 is no longer aligned with the direction of roller 6 by this, so as to finally cause quiet shake
Arm is contacted with valve stem can not receive enough lubricating oil on R faces 5, have impact on lubricant effect.Therefore, as shown in figure 4, can be with
Convex shoulder 31 is set on return spring holder 3, second fuel feed hole 32 be located at convex shoulder 31 and the bottom lock end of return spring holder 3 it
Between, annular groove 14, the oil of annular groove 14 and first can be formed between return spring holder 3 and quiet rocking arm 2 at convex shoulder 31
Passage 91 is communicated, as shown in Figure 1；Meanwhile, the second described fuel feed hole 32 sets several, and the second fuel feed hole 32 is respectively positioned on again
In the same sagittal plane of position spring base 3.Using such structure design, lubricating oil can be made finally to be drawn by annular groove 14
It is directed at one or more the second fuel feed hole 32, and is entered by the second fuel feed hole 32 in the inner chamber of return spring holder 3, finally from the
Two oily passages 24 flow out carries out effectively lubricating to contact R faces 5 with valve stem to quiet rocking arm, meanwhile, the profit in annular groove 14
Lubricating oil can also be sufficiently lubricated the relative sliding contact face between return spring holder 3 and quiet rocking arm 2.But it should be noted
, increase the quantity of the second fuel feed hole 32, can make the manufacturing cost of return spring holder 3 increases, while can also reduce reset bullet
The mechanical strength of spring abutment 3.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Any modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (8)
1. a kind of self-lubricating type two-stage variable Formula V VL rocking arms, including quiet rocking arm (2), lock pin (9) and motion rocker arm (10), positioned at quiet
Lock pin mounting hole (22) on rocking arm (2) is slidably socketed with lock pin (9), it is characterised in that：Quiet rocking arm（2）With motion rocker arm（10）It
Between pass through alignment pin（1）The rocker body that can be relatively rotated is pivotally connected into, the first fuel feed hole is also opened up on the quiet rocking arm (2)
(21), return spring holder mounting groove (23) and the second oily passage (24), the return spring holder mounting groove (23) and back-moving spring
Seat (3) is slidably socketed, and back-moving spring (4) is set between return spring holder mounting groove (23) and return spring holder (3), is being resetted
The second fuel feed hole (32) is opened up on spring base (3), the first oily passage (91) and lock pin pressing portion (95) are set on lock pin (9),
Formation lock pin shoe cream room (11) between the lock pin pressing portion (95) and lock pin mounting hole (22), first fuel feed hole (21),
Insertion successively between first oily passage (91), the second fuel feed hole (32), return spring holder mounting groove (23), the second oily passage (24)
Rocking arm self-lubricating passage, first fuel feed hole (21) are constituted while being communicated with lock pin shoe cream room (11), the described second oily passage
(24) outlet contacts R faces (5) insertion with valve stem with quiet rocking arm.
2. self-lubricating type two-stage variable Formula V VL rocking arms according to claim 1, it is characterised in that：The first described oil-feed
Hole (21), the first oily passage (91), the second fuel feed hole (32), the second oily passage (24) center line it is in the same plane.
3. self-lubricating type two-stage variable Formula V VL rocking arms according to claim 1, it is characterised in that：Described lock pin (9) by
Lock pin working end (92) and lock pin guide end (94) are fixedly connected into T-shaped structure, the lock pin guide end (94) and lock pin spring
Seat (13) is fixedly connected, and installs what is be socketed with lock pin guide end (94) between lock pin spring seat (13) and lock pin working end (92)
Lock pin spring (12), the first described oily passage (91) insertion lock pin working end (92) and lock pin guide end (94).
4. self-lubricating type two-stage variable Formula V VL rocking arms according to claim 3, it is characterised in that：Described lock pin work
End (92), lock pin guide end (94) are cylindrical structure, and the external diameter of lock pin working end (92) is more than lock pin guide end (94)
External diameter.
5. the self-lubricating type two-stage variable Formula V VL rocking arms according to claim 3 or 4, it is characterised in that：Described lock pin
Set on working end (92) into oil ring groove (96), it is described enter oil ring groove (96) be mutually communicated with the first oily passage (91).
6. the self-lubricating type two-stage variable Formula V VL rocking arms according to claims 1 or 2, it is characterised in that：Described reset
Convex shoulder (31) is set on spring base (3), and second fuel feed hole (32) is located at convex shoulder (31) and return spring holder (3) bottom lock
Between end, annular groove (14), the annular groove are formed at convex shoulder (31) place between the return spring holder (3) and quiet rocking arm (2)
(14) communicated with the first oily passage (91).
7. self-lubricating type two-stage variable Formula V VL rocking arms according to claim 6, it is characterised in that：The second described oil-feed
Hole (32) is the radial direction through hole communicated with return spring holder (3) inner chamber.
8. self-lubricating type two-stage variable Formula V VL rocking arms according to claim 6, it is characterised in that：The second described oil-feed
Hole (32) sets several, and the second fuel feed hole (32) is respectively positioned in the same sagittal plane of return spring holder (3).
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| CN201510422785.6A CN104989477B (en) | 2015-07-17 | 2015-07-17 | A kind of self-lubricating type two-stage variable Formula V VL rocking arms |
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| CN201510422785.6A CN104989477B (en) | 2015-07-17 | 2015-07-17 | A kind of self-lubricating type two-stage variable Formula V VL rocking arms |
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| CN104989477B true CN104989477B (en) | 2017-09-29 |
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| KR102426808B1 (en) * | 2018-03-07 | 2022-07-27 | 자콥스 비히클 시스템즈, 인코포레이티드. | rocker arm control systems |
| CN109441584A (en) * | 2019-01-10 | 2019-03-08 | 绵阳富临精工机械股份有限公司 | A kind of VVL rocker arm locking structure |
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| CN102330585A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Lubrication mechanism of valve rocker |
| EP2662540A1 (en) * | 2012-05-11 | 2013-11-13 | Otics Corporation | Variable valve mechanism |
| CN204783152U (en) * | 2015-07-17 | 2015-11-18 | 绵阳富临精工机械股份有限公司 | But self -lubricating type two -stage variant VVL rocking arm |
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