CN109630229A - A kind of high compact rocker arm switching device of engine - Google Patents
A kind of high compact rocker arm switching device of engine Download PDFInfo
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- CN109630229A CN109630229A CN201811279704.1A CN201811279704A CN109630229A CN 109630229 A CN109630229 A CN 109630229A CN 201811279704 A CN201811279704 A CN 201811279704A CN 109630229 A CN109630229 A CN 109630229A
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- Prior art keywords
- rocker arm
- molded line
- movable
- oil duct
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a kind of high compact rocker arm switching devices of engine, including cam, tappet, rocker arm body and valve assembly；Cam outer face is equipped with the first molded line and the second molded line；Rocker arm body includes rocker arm ontology, the first movable rocker arm that can cooperate with the first molded line and the second movable rocker arm that can cooperate with the second molded line; rocker arm body interior is equipped with the hydraulic actuating mechanism that can cooperate with the upper and lower end parts of above-mentioned two movable rocker arm; by controlling hydraulic actuating mechanism; can switch rocker arm; changes the cooperation rule between movable rocker arm and cam profile, realizes that two or four strokes are variable.The present invention only needs a hydraulic actuating mechanism, does not need to operate control mechanism under each working cycles, but needs just to be adjusted under the operating condition changed in stroke, and structure and control are simple, are conducive to the engineering application of changeable air valve technology.
Description
Technical field
The invention belongs to engine variable-valve technical fields, more particularly, to a kind of high compact rocker arm switching dress of engine
It sets.
Background technique
Internal combustion engine is still that thermal efficiency highest, unit volume and the maximum prime mover of power-weight ratio, application are non-so far
Often extensively, however as the gradually shortage and the continuous deterioration of environmental resource of world energy sources, it would be desirable to which internal combustion engine meets more
Stringent emission regulation and economic index.Traditional combustion engine takes the camshaft actuated valve of fixed molded line, this makes internal combustion
The discharge and oil consumption of machine can not reach most preferably in all operating points, and therefore, most internal combustion engine all uses changeable air valve
Technical controlling discharge, reduces oil consumption.
Changeable air valve technology is broadly divided into variable gas distribution technology based on camshaft and at present without cam distribution technology.The former
It is main to change mechanical structure, therefore structure is simple, fast response time, but because remaining cam, valve is only opposite can
Become, can not arbitrarily can be changed.And it then can arbitrarily change valve timing, lift and duration without cam distribution technology.With regard to driving
Flowing mode divides, and no cam distribution technology is divided into the modes such as electromagnetic drive, electrically driven, motor driven, electro-hydraulic driving.Relative to
The disadvantages of energy consumption is high for electromagnetic drive, and electrically driven response speed is low and unstable, motor-driven system complex, electro-hydraulic drive
It is dynamic it is relatively easy without cam distribution technical pattern, response speed is very fast.However it also have the shortcomings that it is inevitable: under high revolving speed
Flow rate of hydraulic system is inadequate, and valve, which reaches at maximum lift and takes a seat, locates that speed is fast, impact force is big.Therefore it is mainly used for diesel engine
On this lower engine of revolving speed, in addition to this, it is necessary to be using expensive electrohydraulic servo system and relative complex control
Technology processed avoids impact of taking a seat to be accurately controlled valve stroke, considerably increases the cost of engine.Therefore, it is necessary to for hair
The specific purposes of motivation uses suitable changeable air valve technology.
Variable valve actuator for air volume in the prior art is larger, is unfavorable for compact Layout, it is necessary to innovative improvement is carried out,
To realize efficiently high compact rocker arm switch operating.
Summary of the invention
In view of this, the present invention is directed to propose a kind of high compact rocker arm switching device of engine, passes through two cams of change
The matching relationship of molded line and rocker arm may be implemented two or four strokes and exchange function.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of high compact rocker arm switching device of engine, including cam, tappet, rocker arm body and valve assembly；
The cam outer face is equipped with the first molded line and the second molded line；
The rocker arm body includes rocker arm ontology, and is respectively at the first movable rocker arm and second of rocker arm ontology two sides
Movable rocker arm；First movable rocker arm one end and second movable rocker arm one end all pass through rocker arm shaft and the rocker arm ontology
Hingedly；
First movable rocker arm can be engaged with first molded line；Second movable rocker arm can be with described second
Molded line is engaged；
The valve assembly includes valve, valve spring and valve seating；
Cooperate at the top of rocker arm body bottom portion one end and the valve；
The rocker arm body interior is equipped with hydraulic actuating mechanism, is shaken by control hydraulic actuating mechanism with first activity
The cooperation rule of the upper and lower side of arm upper and lower side and second movable rocker arm, in first movable rocker arm and first type
Switching mutually is realized between line cooperation and second movable rocker arm and second molded line cooperation.
Further, the first oil duct and the second oil duct are equipped with inside the tappet；The hydraulic actuating mechanism include piston,
Third oil duct and the 4th oil duct；
The piston is equipped with First piston bar and second piston bar close to the side of the valve assembly；First activity
Rocker arm and First piston bar cooperate；Second movable rocker arm and the second piston bar cooperate.
The other end of the rocker arm body bottom portion is equipped with half-moon groove, with cooperation at the top of the tappet；First oil duct is logical
It crosses the half-moon groove to communicate with the third oil duct, second oil duct is communicated by the half-moon groove with the 4th oil duct；
The third oil duct and the external three position four-way electromagnetic valve of the 4th oil duct.
Further, first movable rocker arm top and bottom are respectively equipped with the first skewed slot and the first lock groove；It is described
First skewed slot and first lock groove can cooperate with the First piston bar respectively；
Second movable rocker arm top and bottom are respectively equipped with the second skewed slot and the second lock groove；Second skewed slot and
Second lock groove can cooperate with the second piston bar respectively.
Further, rocker arm body bottom portion two sides are equipped with boss；The boss and first movable rocker arm bottom
And spring is equipped between second movable rocker arm bottom.
Further, one end of the rocker arm body bottom portion is equipped with groove, with cooperation at the top of the valve.
Further, for the first molded line tool there are two symmetrical protruding end, second molded line has a protruding end；Institute
The cornerite and height of projection for stating any protruding end in the first molded line will be less than the second molded line.
Further, the cam revolving speed is engine speed half.
Compared with the existing technology, the high compact rocker arm switching device of a kind of engine of the present invention, has the advantage that
The high compact rocker arm switching device of a kind of engine of the present invention, by living in reed time controll hydraulic actuating mechanism
The position of plug changes the cooperation rule between piston rod and movable rocker arm, can switch rocker arm, realizes that two or four strokes are variable.This
Invention only needs a hydraulic actuating mechanism, does not need to operate control mechanism under each working cycles, but
It needs just to be adjusted under the operating condition changed in stroke, structure and control are simple, and when a movable rocker arm and cam engagement, separately
One movable rocker arm is contactless with cam, reduces abrasion, is conducive to the engineering application of changeable air valve technology.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is main view (the first molded line 101 and second when the embodiment of the present invention is in valve-closing under two-stroke mode
When molded line 102 is by protrusion)；
Fig. 2 is the top view of cam in Fig. 1；
Fig. 3 is the main view of tappet in Fig. 1；
Fig. 4 is the main view of valve mechanism in Fig. 1；
Fig. 5 is the main view of rocker arm body in Fig. 1；
Fig. 6 is the rearview of Fig. 5；
Fig. 7 is the top view of Fig. 5；
Fig. 8 is the left view of piston in Fig. 5；
Fig. 9 is the main view when embodiment of the present invention is in valve opening under two-stroke mode；
Figure 10 is the rearview of Fig. 9；
Figure 11 is that (two-stroke turns to four strokes for main view when the embodiment of the present invention is in valve-closing under two-stroke mode
Change starting point, the first molded line 101 i.e. by protrusion and the second molded line 102 is in base circle conditions)；
Figure 12 is that the embodiment of the present invention is in main view (first of the two-stroke into four-stoke mode switching when valve-closing
101 protrusion of molded line, the second molded line 102 are in base circle conditions)；
Figure 13 be when the embodiment of the present invention is in valve-closing under four-stoke mode main view (101 protrusion of the first molded line,
Second molded line 102 is in base circle conditions)；
Figure 14 is the main view when embodiment of the present invention is in valve opening under four-stoke mode；
Figure 15 is that (four strokes are to two-stroke rotary for main view when the embodiment of the present invention is in valve-closing under four-stoke mode
Starting point is changed, the first molded line 101 and the second molded line 102 i.e. will be raised)；
Figure 16 is that the embodiment of the present invention is in main view (second of four strokes into two-stroke mode switching when valve-closing
Molded line 102 is prior to 101 protrusion of the first molded line)；
Figure 17 is the rearview of Figure 16.
Description of symbols:
1. cam, 2. tappets, 3. rocker arm bodies, 4. valve assemblies, 101. first molded line, 102. second molded line 201. first
Oil duct, 202. second oil ducts, 301. rocker arm ontologies, 302. boss, 303. grooves, 304. springs, 305. rocker arm shafts, 306. first
Movable rocker arm, 307. first lock grooves, 308. first skewed slots, 309. hydraulic actuating mechanisms, 310. pistons, 311. third oil ducts,
312. half-moon grooves, 313. the 4th oil ducts, 314. second movable rocker arms, 315. second skewed slots, 316. second lock grooves, 317. first
Piston rod, 318. second piston bars, 401. valves, 402. valve spring, 403. valve seatings.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 to 11, the present invention includes cam 1, tappet 2, rocker arm body 3 and valve assembly 4；The cam 1
Outer surface is equipped with the first molded line 101 and the second molded line 102；The first oil duct 201 and the second oil duct 202 are equipped with inside the tappet 2；
The rocker arm body 3 includes rocker arm ontology 301, and is respectively at the first movable rocker arm 306 and the of 301 two sides of rocker arm ontology
Two movable rocker arms 314；The valve assembly 4 includes valve 401, valve spring 402 and valve seating 403；
Hydraulic actuating mechanism 309 is equipped with inside the rocker arm ontology 301, the hydraulic actuating mechanism 309 includes piston
310, third oil duct 311 and the 4th oil duct 313；The piston 310 is equipped with First piston bar close to the side of the valve assembly 4
317 and second piston bar 318；
Described first movable rocker arm, 306 one end and described second movable rocker arm, 314 one end all pass through rocker arm shaft 305 with it is described
Rocker arm ontology 301 is hinged；
301 two sides of the bottom of rocker arm ontology are equipped with boss 302；The boss 302 and 306 bottom of the first movable rocker arm
Spring 304 is equipped between portion and 314 bottom of the second movable rocker arm；
First movable rocker arm 306 can be engaged with first molded line 101；Second movable rocker arm 306 can
It is engaged with second molded line 102；
First movable rocker arm, 306 top and bottom are respectively equipped with the first skewed slot 308 and the first lock groove 307；It is described
First skewed slot 308 and first lock groove 307 can cooperate with the First piston bar 317 respectively；
Second movable rocker arm, 314 top and bottom are respectively equipped with the second skewed slot 315 and the second lock groove 316；It is described
Second skewed slot 315 and second lock groove 316 can cooperate with the second piston bar 318 respectively；
By controlling hydraulic actuating mechanism 309, can match in first movable rocker arm 306 and first molded line 101
Mutual handoff functionality is realized between conjunction and the cooperation of second movable rocker arm 306 and second molded line 102.
One end of 301 bottom of rocker arm ontology, which is equipped at the top of groove 303, with the valve 401, to be cooperated；
The other end of 301 bottom of rocker arm ontology, which is equipped at the top of half-moon groove 312, with the tappet 2, to be cooperated；
First oil duct 201 is communicated by the half-moon groove 312 with the third oil duct 311, second oil duct 202
It is communicated by the half-moon groove 312 with the 4th oil duct 313；
The third oil duct 311 and the external three position four-way electromagnetic valve of the 4th oil duct 313；
For the tool of first molded line 101 there are two symmetrical protruding end, second molded line 102 has a protruding end；
The cornerite and height of projection of any protruding end in first molded line 101 will be less than the second molded line 102；
1 revolving speed of cam is engine speed half.
The course of work of the invention is as follows:
First by taking two stroke operation mode as an example, as shown in FIG. 1 to FIG. 8, the first of 306 lower end of the first movable rocker arm at this time
Lock groove 307 is engaged with First piston bar 317, the second skewed slot 315 and second piston bar of 314 upper end of the second movable rocker arm
318 are engaged, and the cam 1 is in base circle conditions, and cam 1 is not to first movable rocker arm 306 and the second movable rocker arm
314 apply downward effect, and valve 401 is adjacent to the valve seating 403, the gas under the active force of the valve spring 402
Door 401 is in close state.
When the cam 1 continues rotation (by taking front view is clockwise as an example), the first molded line 101 and the second molded line in cam 1
102 all in raised position when, as shown in Figure 9 and Figure 10, due to 306 lower end of the first movable rocker arm the first lock groove 307 with
The First piston bar 317 is engaged, and first movable rocker arm 306 is in locking state, the first type in the cam 1
Line 101 will apply downward active force to first movable rocker arm 306, overcome valve by the lever principle of the tappet 2
402 active force of spring, the valve 401 are in the open state.Since 1 revolving speed of cam is engine speed half, and the first type
Line 101 is double peach tip shapes, therefore every turn of engine primary, and the first molded line 101 in the cam 1 is to the first movable rocker arm
306 drivings are primary, and engine working mode is two-stroke.Due to the second skewed slot 315 and second of 314 upper end of the second movable rocker arm
Piston rod 318 is engaged, therefore during engine two stroke operation mode operation, the second movable rocker arm 314 with it is described
Second molded line 102 is contactless always.
When engine need to be changed to four-stoke mode from two-stroke rotary, engine is made to run to valve-closing state first,
And continue to rotate clockwise when cam 1, the first molded line 101 i.e. the second molded line 102 when being in base circle conditions, such as Figure 11 by protrusion
It is shown, external three position four-way electromagnetic valve is utilized at this time, by controlling the first oil duct 201, the second oil duct 202, third oil duct 311
And the 4th hydraulic fluid direction in oil duct 313, adjust the position of piston 310 in hydraulic actuating mechanism 309, to Figure 11 on the right side of
It is mobile, so that First piston bar 317 is detached from the first lock groove 307, while second piston bar 318 being made to be detached from the second skewed slot 315, then the
Two movable rocker arms 314 move up under the action of spring 304, until the basic circle location contacts with the second molded line 102.
When cam 1 continues to be rotated clockwise to the position Figure 12, the first molded line 101 is in the second molded line of raised position 102
In base circle conditions, the first movable rocker arm 306 is rotated clockwise under the drive of the first molded line 101 around rocker arm shaft 305, sharp at this time
With external three position four-way electromagnetic valve, pass through the first oil duct 201 of control, the second oil duct 202, third oil duct 311 and the 4th oil
Hydraulic fluid direction in road 313 adjusts the position of piston 310 in hydraulic actuating mechanism 309, mobile to the left side Figure 12, and first
First skewed slot 308 of 306 upper end of movable rocker arm is engaged with the First piston bar 317, and when piston 310 further to the left
When side is mobile, the first movable rocker arm 306 is rotated clockwise under the action of the first skewed slot 308 further around rocker arm shaft 305, and
It is gradually disengaged with first molded line 101, as shown in figure 13, the movement of the first molded line 101 at this time will be no longer living to first
Shake 306 generation of arm effect.Simultaneously because piston 310 is to close to the movement of 401 direction of valve, second piston bar 318 will be with second
Second lock groove 316 of 314 lower end of movable rocker arm is engaged, and the second movable rocker arm 314 is in locking state.
When continuing to be rotated clockwise to the position Figure 14 with cam, the first molded line 101 and the second molded line 102 are all in protrusion
State, the second molded line 102 will apply downward active force to second movable rocker arm 314, former by the lever of the tappet 2
Reason overcomes 402 active force of valve spring, and the valve 401 is in the open state.Since 1 revolving speed of cam is engine speed one
Half, and the second molded line 102 is single peach tip shape, therefore every turn of engine is primary, the second molded line 102 in the cam 1 will be right
Second movable rocker arm 314 drives once, and engine working mode is four strokes.Due to the first of 306 upper end of the first movable rocker arm
Skewed slot 308 is engaged with First piston bar 317, therefore during four stroke operation mode operation of engine, the first activity
Rocker arm 306 and first molded line 101 are contactless always.
When engine need to be converted to two-stroke mode from four strokes, engine is made to run to valve-closing state first,
And when cam 1 continues to rotate clockwise, the first molded line 101 and the second molded line 102 will all be in raised position, as shown in figure 15,
At this time utilize external three position four-way electromagnetic valve, by control the first oil duct 201, the second oil duct 202, third oil duct 311 and
Hydraulic fluid direction in 4th oil duct 313 adjusts the position of piston 310 in hydraulic actuating mechanism 309, moves to the right side Figure 15
It is dynamic, so that First piston bar 317 is detached from the first skewed slot 308, then the first movable rocker arm 306 moves up under the action of spring 304,
Until the basic circle location contacts with the first molded line 101.Second piston bar 318 is set to be detached from the second lock groove 316 simultaneously.
Due to any protruding end in the first molded line 101 cornerite and height of projection will less than the second molded line 102, because
This necessarily will appear 102 to the first molded line 101 of second type line and be introduced into raised position, such as when cam 1 continues to rotate clockwise
Shown in Figure 16 and Figure 17, at this time utilize external three position four-way electromagnetic valve, by control the first oil duct 201, the second oil duct 202,
Hydraulic fluid direction in third oil duct 311 and the 4th oil duct 313 adjusts the position of piston 310 in hydraulic actuating mechanism 309
It sets, mobile to the left side Figure 16, then First piston bar 317 is engaged with the first lock groove 307, and the first movable rocker arm 306 is in
Locking state, while second piston bar 318 is engaged with the second skewed slot 315.When cam 1 continues to rotate clockwise, then such as
Shown in Fig. 9 and Figure 10.As a result, in cycles.
To sum up, by the position of piston in reed time controll hydraulic actuating mechanism, change between piston rod and movable rocker arm
Cooperation rule, can switch rocker arm, realize that two or four strokes are variable.The present invention only needs a hydraulic actuating mechanism, does not need
Control mechanism is operated under each working cycles, but needs just to be adjusted under the operating condition changed in stroke, is controlled
System is simple, and when a movable rocker arm and cam engagement, another movable rocker arm is contactless with cam, reduces abrasion, favorably
In the engineering application of changeable air valve technology.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of high compact rocker arm switching device of engine, it is characterised in that: including cam (1), tappet (2), rocker arm body (3)
With valve assembly (4)；
Cam (1) outer surface is equipped with the first molded line (101) and the second molded line (102)；
The rocker arm body (3) includes rocker arm ontology (301), and is respectively at first activity of rocker arm ontology (301) two sides
Rocker arm (306) and the second movable rocker arm (314)；Described first movable rocker arm (306) one end and second movable rocker arm (314)
One end all passes through rocker arm shaft (305) and the rocker arm ontology (301) is hinged；
First movable rocker arm (306) can be engaged with first molded line (101)；Second movable rocker arm (314)
It can be engaged with second molded line (102)；
The valve assembly (4) includes valve (401), valve spring (402) and valve seating (403)；
Cooperate at the top of rocker arm ontology (301) bottom end and the valve (401)；
Hydraulic actuating mechanism (309) are equipped with inside the rocker arm ontology (301), pass through control hydraulic actuating mechanism (309) and institute
The cooperation rule for stating the upper and lower side of the first movable rocker arm (306) upper and lower side and second movable rocker arm (314), described the
One movable rocker arm (306) and first molded line (101) cooperation and second movable rocker arm (314) and second molded line
(102) switching mutually is realized between cooperation.
2. the high compact rocker arm switching device of engine according to claim 1, it is characterised in that: the tappet (2) is internal
Equipped with the first oil duct (201) and the second oil duct (202)；The hydraulic actuating mechanism (309) includes piston (310), third oil duct
(311) and the 4th oil duct (313)；
The piston (310) is equipped with First piston bar (317) and second piston bar close to the side of the valve assembly (4)
(318)；First movable rocker arm (306) and First piston bar (317) cooperate；Second movable rocker arm (314) with it is described
Second piston bar (318) cooperation.
The other end of rocker arm ontology (301) bottom is equipped with half-moon groove (312), cooperates at the top of the tappet (2)；Described
One oil duct (201) is communicated by the half-moon groove (312) with the third oil duct (311), and second oil duct (202) passes through institute
Half-moon groove (312) is stated to communicate with the 4th oil duct (313)；
The third oil duct (311) and the external three position four-way electromagnetic valve of the 4th oil duct (313).
3. the high compact rocker arm switching device of engine according to claim 2, it is characterised in that: first movable rocker arm
(306) top and bottom are respectively equipped with the first skewed slot (308) and the first lock groove (307)；First skewed slot (308) and described
First lock groove (307) can cooperate with the First piston bar (317) respectively；
Second movable rocker arm (314) top and bottom are respectively equipped with the second skewed slot (315) and the second lock groove (316)；Institute
Stating the second skewed slot (315) and second lock groove (316) can cooperate with the second piston bar (318) respectively.
4. the high compact rocker arm switching device of engine according to claim 1, it is characterised in that: the rocker arm ontology
(301) two sides of the bottom are equipped with boss (302)；The boss (302) and the first movable rocker arm (306) bottom and described the
Spring (304) are equipped between two movable rocker arms (314) bottom.
5. the high compact rocker arm switching device of engine according to claim 1, it is characterised in that: the rocker arm ontology
(301) one end of bottom is equipped with groove (303), cooperates at the top of the valve (401).
6. the high compact rocker arm switching device of engine according to claim 1, it is characterised in that: first molded line
(101) there are two symmetrical protruding ends, second molded line (102) to have a protruding end for tool；In first molded line (101)
The cornerite and height of projection of any protruding end will be less than the second molded line (102).
7. the high compact rocker arm switching device of engine according to claim 1, it is characterised in that: cam (1) revolving speed
For engine speed half.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811279704.1A CN109630229B (en) | 2018-10-30 | 2018-10-30 | High-compact rocker arm switching device of engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811279704.1A CN109630229B (en) | 2018-10-30 | 2018-10-30 | High-compact rocker arm switching device of engine |
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| CN109630229A true CN109630229A (en) | 2019-04-16 |
| CN109630229B CN109630229B (en) | 2020-05-26 |
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