CN108071443A - A kind of change mode continuous variable valve actuator for air - Google Patents
A kind of change mode continuous variable valve actuator for air Download PDFInfo
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- CN108071443A CN108071443A CN201711219781.3A CN201711219781A CN108071443A CN 108071443 A CN108071443 A CN 108071443A CN 201711219781 A CN201711219781 A CN 201711219781A CN 108071443 A CN108071443 A CN 108071443A
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- adjustable
- valve
- air inlet
- rocker arm
- drive
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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
- F01L13/0021—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 by modification of rocker arm ratio
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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
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
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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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
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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
- F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
Abstract
A kind of change mode continuous variable valve actuator for air, belongs to engine valve actuations and auxiliary braking field.It includes being respectively used to four sets of cams of exhaust brake, exhaust gas drive, air inlet braking and air inlet drive pattern, adjustable rocker arm, adjustable cam, track, holddown spring, rocking arm, rocking arm resetting spring, valve assembly etc..By the phase for adjusting aforementioned four adjustable cam, drive pattern is not only realized with braking mode to switch, and realize the continuous variable of valve lift curve under each pattern, this improves the braking safety of engine, it is adjustable to realize braking power, driving power is improved, reduces fuel consumption and exhaust emissions.
Description
Technical field
The present invention relates to a kind of change mode continuous variable valve actuator for air, belong to engine valve actuations and auxiliary braking neck
Domain.
Background technology
GB 7258—2012 《Motor vehicle safe and technical specification》It is required that：Vehicle commander is more than the car of 9m（To special school
Vehicle is more than 8 m for vehicle commander）, lorry of the gross mass more than or equal to 12000 kg and special Operation Van, all Dangerous Goods Transports
Vehicle should equip retarder or other complemental brake systems.There is the retarders such as current vortex, electromagnetism the easily overheat that works long hours to lose
The drawbacks of effect, although engine auxiliary braking maximum brake power is relatively low, work long hours the problem of will not overheating,
And in weight, noise, cost, installation space etc., engine auxiliary braking has absolute predominance.Two-stroke auxiliary braking
Technology can effectively improve gross engine horsepower.It is a with driving mould to realize that two-stroke auxiliary braking must be developed
Formula and two-stroke braking mode, and the change mode variables valve mechanism that can flexibly switch between both of which.
In addition, although the vehicles ownership such as lorry, medium-and-large-sized car is not as good as small passenger car, distance travelled is long,
Fuel consumption and discharge are serious.Under the pressure of increasingly strict oil consumption and emission regulation, major commercial car production firm is numerous and confused
It improves the thermal efficiency of diesel engine using multinomial technologies such as high-pressure injection, changeable air valve, new combustion modes, reduce discharge.Cause
This, following commercial vehicle engine needs the air valve variation mechanism of a achievable continuous variable valve event.
It can realize that the requirement of change pattern and continuous variable valve event will simultaneously without a variable valve actuator for air at this stage
It asks, and meets practical requirement, therefore, the exploitation of a change mode continuous variable valve actuator for air is imperative.
The content of the invention
It is an object of the invention to：By designing a kind of change mode continuous variable valve actuator for air, it is used to implement：（a）In order to
Vehicle safety is improved, it is necessary to which the mechanism is in addition to providing the valve lift curve needed for engine drive mode, it is also necessary to carry
For the valve lift curve needed for engine two-stroke braking mode；（b）In order to improve the performance under engine driving and braking,
The mechanism is needed to realize the valve lift curve of continuous variable.
The technical solution adopted in the present invention is：A kind of change mode continuous variable valve actuator for air, it includes valve assembly, convex
Wheel, adjustable rocker arm, adjustable cam, track, holddown spring, rocking arm, rocking arm resetting spring.Cam includes exhaust brake cam, row
Gas drive moving cam, air inlet brake cam and air inlet driving cam, adjustable rocker arm can including exhaust brake adjustable rocker arm, exhaust gas drive
Rocking arm, air inlet braking adjustable rocker arm and air inlet driving adjustable rocker arm are adjusted, adjustable cam includes exhaust brake adjustable cam, exhaust is driven
Dynamic adjustable cam, air inlet braking adjustable cam and air inlet driving adjustable cam, track include exhaust brake track, exhaust gas drive rail
Road, air inlet braking orbit and air inlet driving track, rocking arm include exhaust brake rocking arm, exhaust gas drive rocking arm, air inlet brake rocker arm
Rocking arm is driven with air inlet, rocking arm resetting spring includes at least exhaust brake rocking arm resetting spring and air inlet brake rocker arm resets bullet
Spring, valve assembly include intake valve assembly and exhaust valve assemblies.Adjustable rocker arm is provided with adjustable end, input terminal and output curved surface.
Simultaneously with exhaust brake adjustable cam and exhaust brake rail contact, exhaust gas drive is adjustable at the adjustable end of exhaust brake adjustable rocker arm
Simultaneously with exhaust gas drive adjustable cam and exhaust gas drive rail contact, air inlet brakes the adjustable end of adjustable rocker arm for the adjustable end of rocking arm
Adjustable cam and air inlet braking orbit is braked with air inlet simultaneously to contact, the adjustable end of air inlet driving adjustable rocker arm simultaneously with into gas drive
Dynamic adjustable cam and air inlet driving rail contact, each holddown spring provide spring force and drive the defeated of exhaust brake adjustable rocker arm respectively
Enter end is contacted with the exhaust brake cam moment, the input terminal of exhaust gas drive adjustable rocker arm is contacted with the exhaust gas drive cam moment, into
The input terminal of gas braking adjustable rocker arm contact with the air inlet brake cam moment, air inlet drives the input terminal of adjustable rocker arm and into gas drive
The moving cam moment contacts, and the output curved surface of exhaust brake adjustable rocker arm drives exhaust valve assemblies, exhaust by exhaust brake rocking arm
The output curved surface of adjustable rocker arm is driven to drive exhaust valve assemblies by exhaust gas drive rocking arm, the output of air inlet braking adjustable rocker arm is bent
Face drives intake valve assembly by air inlet brake rocker arm, and the output curved surface of air inlet driving adjustable rocker arm drives rocking arm to drive by air inlet
Dynamic intake valve assembly, exhaust brake rocking arm resetting spring provide spring force and drive exhaust brake rocking arm and exhaust brake adjustable rocker arm
The contact of output curved surface moment, air inlet brake rocker arm resetting spring provide spring force air inlet brake rocker arm and air inlet is driven to be braked can
Adjust the output curved surface moment contact of rocking arm.The output curved surface of adjustable rocker arm drives rocking arm directly or by very cup, push rod.Rocking arm is straight
It connects or by air valve bridge Component driver valve assembly.
Adjustable cam includes basic circle section and raised section.Under drive pattern, the basic circle section of driving braking adjustable cam with it is corresponding
Adjustable end in contact.Under braking mode, the basic circle section of adjustable cam and corresponding adjustable end in contact are driven.
Valve axle assemble uses the first valve axle assemble, duaspiracle axle assemble, third valve axle assemble or Four valve
Axle assemble.First valve axle assemble includes the first air valve bridge and the first drive link, and the first air valve bridge is passed by boss drive first
Lever, the first air valve bridge include the first driving input terminal and the first air valve bridge output terminal, and it is defeated that the first drive link includes the first braking
Enter end and the first drive link output terminal.Duaspiracle axle assemble includes duaspiracle bridge and driving rocking arm resetting spring, the second gas
It is defeated that the raft of pontoons includes the second braking input terminal, the second driving input terminal, the first output terminal of duaspiracle bridge and duaspiracle bridge second
Outlet.Third valve axle assemble includes third valve bridge and the second drive link, and third valve bridge drives the by hinged and convex shoulder
Two drive links, third valve bridge include the 3rd driving input terminal and third valve bridge output terminal, and the second drive link includes the 3rd system
Dynamic input terminal and the second drive link output terminal.Four valve axle assemble includes driving input terminal, braking input terminal and output terminal.It is right
In exhaust side or air inlet side using the first valve axle assemble, driving rocking arm is in contact with the first driving input terminal, brake rocker arm and
First braking input terminal is in contact, and the first air valve bridge output terminal and the first drive link output terminal connect respectively with two valve assemblies
It touches.For exhaust side or air inlet side using duaspiracle axle assemble, driving rocking arm is in contact with the second driving input terminal, and braking is shaken
Arm is in contact with the second braking input terminal, the first output terminal of duaspiracle bridge and duaspiracle bridge second output terminal respectively with two
Valve assembly is in contact, and driving rocking arm resetting spring provides spring force and drives driving rocking arm with driving the output curved surface of adjustable rocker arm
Moment contacts.For exhaust side or air inlet side using third valve axle assemble, driving rocking arm is in contact with the 3rd driving input terminal,
Brake rocker arm is in contact with the 3rd braking input terminal, third valve bridge output terminal and the second drive link output terminal respectively with two gas
Door attached components touch.For exhaust side or air inlet side using Four valve axle assemble, driving rocking arm is in contact with driving input terminal,
Brake rocker arm is in contact with braking input terminal, and output terminal drives a valve assembly.
When rocking arm directly drives valve assembly, valve assembly includes valve actuation input terminal and valve actuation input terminal.It drives
Shake arm to be in contact with valve actuation input terminal, brake rocker arm is in contact with valve actuation input terminal.
There are two chucks for adjustable end both sides setting.
The beneficial effects of the invention are as follows：This change mode continuous variable valve actuator for air mainly includes being respectively used to exhaust system
Dynamic, exhaust gas drive, four sets of cams of air inlet braking and air inlet drive pattern, adjustable rocker arm, adjustable cam, track, holddown spring,
Rocking arm, rocking arm resetting spring, valve assembly etc..It can be achieved：By adjusting the phase of this four adjustable cams, drive is not only realized
Dynamic model formula switches with braking mode, and realizes valve lift curve continuous variable under each pattern, and which not only improves start
The braking safety of machine, and it is adjustable to realize braking power, improves driving power, reduces fuel consumption and tail gas row
It puts.
Description of the drawings
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the front view that overhead camshaft type becomes mode continuous variable valve actuator for air.
Fig. 2 is the side view that overhead camshaft type becomes mode continuous variable valve actuator for air.
Fig. 3 is that the front view that cam axle type becomes mode continuous variable valve actuator for air is put at bottom.
Fig. 4 is that the side view that cam axle type becomes mode continuous variable valve actuator for air is put at bottom.
Fig. 5 is the schematic diagram of adjustable rocker arm.
Fig. 6 is the schematic diagram of the first valve axle assemble.
Fig. 7 is the schematic diagram of third valve axle assemble.
Fig. 8 is the schematic diagram of duaspiracle axle assemble.
Fig. 9 is the schematic diagram of Four valve axle assemble.
Figure 10 is the schematic diagram of single valve assembly.
Figure 11 is schematic diagram of the tool there are two the holddown spring at movable spring end.
In figure：101st, exhaust valve assemblies；102nd, intake valve assembly；11st, valve actuation input terminal；12nd, valve actuation inputs
End；201st, exhaust side valve axle assemble；202nd, air inlet side valve axle assemble；211st, the first air valve bridge；2111st, the first driving input
End；2112nd, the first air valve bridge output terminal；212nd, the first drive link；2121st, the first braking input terminal；2122nd, the first drive link is defeated
Outlet；221st, duaspiracle bridge；2211st, the second braking input terminal；2212nd, the second driving input terminal；2213rd, duaspiracle bridge
One output terminal；2214th, duaspiracle bridge second output terminal；231st, third valve bridge；2311st, the 3rd driving input terminal；2312nd,
Three valve bridge output terminal；232nd, the second drive link；2321st, the 3rd braking input terminal；2322nd, the second drive link output terminal；2001、
Drive input terminal；2002nd, input terminal is braked；2003rd, output terminal；301st, exhaust brake rocking arm；302nd, exhaust gas drive rocking arm；303、
Air inlet brake rocker arm；304th, air inlet driving rocking arm；401st, exhaust brake cam；402nd, exhaust gas drive cam；403rd, air inlet is braked
Cam；404th, air inlet driving cam；501st, exhaust brake adjustable rocker arm；502nd, exhaust gas drive adjustable rocker arm；503rd, air inlet is braked
Adjustable rocker arm；504th, air inlet driving adjustable rocker arm；51st, adjustable end；52nd, input terminal；53rd, curved surface is exported；54th, chuck；601st, arrange
Gas braking orbit；602nd, exhaust gas drive track；603rd, air inlet braking orbit；604th, air inlet driving track；701st, exhaust brake pressure
Tight spring；702nd, exhaust gas drive holddown spring；703rd, air inlet braking holddown spring；704th, air inlet driving holddown spring；801st, arrange
Gas brakes adjustable cam；802nd, exhaust gas drive adjustable cam；803rd, air inlet braking adjustable cam；804th, air inlet driving adjustable convex
Wheel；901st, exhaust brake rocking arm resetting spring；902nd, air inlet brake rocker arm resetting spring；1001st, exhaust brake endures cup；1002、
Exhaust gas drive endures cup；1003rd, cup is endured in air inlet braking；1004th, cup is endured in air inlet driving；1101st, exhaust brake push rod；1102nd, it is vented
Driving push rod；1103rd, air inlet brake pushrod；1104th, air inlet driving push rod.
Specific embodiment
The present invention relates to a kind of change mode continuous variable valve actuator for air.Fig. 1 and Fig. 2 is that overhead camshaft type becomes pattern respectively
The front view and side view of continuous variable valve mechanism.Fig. 3 and Fig. 4 is that cam axle type change mode continuous changeable air valve is put at bottom respectively
The front view and side view of mechanism.It includes valve assembly, cam, adjustable rocker arm, adjustable cam, track, holddown spring, shakes
Arm, rocking arm resetting spring.Cam includes exhaust brake cam 401, exhaust gas drive cam 402, air inlet brake cam 403 and air inlet
Driving cam 404, adjustable rocker arm includes exhaust brake adjustable rocker arm 501, exhaust gas drive adjustable rocker arm 502, air inlet braking is adjustable
Rocker arm 5 03 and air inlet driving adjustable rocker arm 504, adjustable cam include exhaust brake adjustable cam 801, exhaust gas drive adjustable cam
802nd, air inlet braking adjustable cam 803 and air inlet driving adjustable cam 804, track include exhaust brake track 601, exhaust gas drive
Track 602, air inlet braking orbit 603 and air inlet driving track 604, rocking arm include exhaust brake rocking arm 301, exhaust gas drive rocking arm
302nd, air inlet brake rocker arm 303 and air inlet driving rocking arm 304, rocking arm resetting spring include at least exhaust brake rocking arm resetting spring
901 and air inlet brake rocker arm resetting spring 902, valve assembly includes intake valve assembly and exhaust valve assemblies.Fig. 5 is adjustable rocker arm
Schematic diagram.Adjustable rocker arm is provided with adjustable end 51, input terminal 52 and output curved surface 53.Adjustable end 51 and input terminal 52 can be
Smooth surface or the roller on the adjustable rocker arm, adjustable end 51 and input terminal 52 in Fig. 1 to Fig. 5 are rolling
Son, to reduce friction loss.Adjustable 51 both sides of end are set there are two chuck 54, ensure that adjustable rocker arm is not fallen off.Exhaust system
The adjustable end of dynamic adjustable rocker arm 501 contacts simultaneously with exhaust brake adjustable cam 801 and exhaust brake track 601, exhaust gas drive
The adjustable end of adjustable rocker arm 502 contacts simultaneously with exhaust gas drive adjustable cam 802 and exhaust gas drive track 602, and air inlet braking can
The adjustable end of Rocker arm 5 03 is adjusted to be contacted simultaneously with air inlet braking adjustable cam 803 and air inlet braking orbit 603, air inlet driving is adjustable
The adjustable end of Rocker arm 5 04 drives adjustable cam 804 and air inlet driving track 604 to contact with air inlet simultaneously, each holddown spring difference
There is provided spring force the input terminal of exhaust brake adjustable rocker arm 501 is driven to be contacted with 401 moment of exhaust brake cam, exhaust gas drive can
Adjust Rocker arm 5 02 input terminal contacted with 402 moment of exhaust gas drive cam, air inlet brake adjustable rocker arm 503 input terminal and air inlet
The contact of 403 moment of brake cam, the input terminal of air inlet driving adjustable rocker arm 504 are contacted with 404 moment of air inlet driving cam, are vented
The output curved surface for braking adjustable rocker arm 501 drives exhaust valve assemblies, exhaust gas drive adjustable rocker arm by exhaust brake rocking arm 301
502 output curved surface drives exhaust valve assemblies by exhaust gas drive rocking arm 302, and the output curved surface of adjustable rocker arm 503 is braked in air inlet
Intake valve assembly is driven by air inlet brake rocker arm 303, the output curved surface of air inlet driving adjustable rocker arm 504 is shaken by air inlet driving
Arm 304 drives intake valve assembly, and exhaust brake rocking arm resetting spring 901 provides spring force and drives exhaust brake rocking arm 301 and row
The output curved surface moment contact of gas braking adjustable rocker arm 501, air inlet brake rocker arm resetting spring 902 provide spring force and drive air inlet
Brake rocker arm 303 is contacted with the output curved surface moment of air inlet braking adjustable rocker arm 503.
Fig. 1 to Fig. 4 gives the situation of single camshaft and single eccentric shaft, i.e. exhaust brake cam 401, exhaust gas drive cam
402nd, air inlet brake cam 403 and air inlet driving cam 404 are arranged on a camshaft, and exhaust brake adjustable cam
801st, exhaust gas drive adjustable cam 802, air inlet braking adjustable cam 803 and air inlet driving adjustable cam 804 are arranged in one partially
In mandrel.Exhaust brake cam 401, exhaust gas drive cam 402, air inlet also can be used for different engine models in the present invention
Brake cam 403 and the needs that put in order of air inlet driving cam 404 are adjusted according to type, also can be according to actual conditions using more
The mechanism of root cam, multiple-eccentric shaft.
Fig. 1 to Fig. 4 gives example of a set of mechanism using four holddown springs, i.e., using exhaust brake holddown spring
701st, exhaust gas drive holddown spring 702, air inlet braking holddown spring 703 and air inlet driving holddown spring 704, these holddown springs
It is respectively provided with a movable spring end.In practical applications, the holddown spring with multiple movable spring ends can also be used, is realized
One holddown spring provides the input terminal that multiple spring forces ensure multigroup adjustable rocker arm and is contacted with the corresponding cam moment simultaneously.Figure
11 be schematic diagram of the tool there are two the holddown spring at movable spring end.
The output curved surface of adjustable rocker arm drives rocking arm directly or by very cup, push rod.Fig. 1 and Fig. 2 is the defeated of adjustable rocker arm
Go out the example that curved surface directly drives rocking arm, available for cammer.Fig. 3 and Fig. 4 is that the output of adjustable rocker arm is bent
Face is by enduring cup, push rod drives the example of rocking arm, puts camshaft type engine the bottom of available for, cam axle type is put in also including certainly
Engine.
Directly or by air valve bridge Component driver valve assembly, Fig. 1 to Fig. 4 gives rocking arm and passes through valve axle assemble rocking arm
Drive the example of valve assembly.
Adjustable cam includes basic circle section and raised section.Under drive pattern, brake the basic circle section of adjustable cam with it is corresponding can
Adjust end in contact.Under braking mode, the basic circle section of adjustable cam and corresponding adjustable end in contact are driven.
Fig. 6 to Fig. 9 is the first valve axle assemble, third valve axle assemble, duaspiracle axle assemble and Four valve respectively
The schematic diagram of axle assemble.Valve axle assemble is using the first valve axle assemble, duaspiracle axle assemble, third valve axle assemble or the
Four valve axle assemble.
Such as Fig. 6, the first valve axle assemble includes the first air valve bridge 211 and the first drive link 212, and the first air valve bridge 211 is logical
The first drive link of boss drive 212 is crossed, the first air valve bridge 211 includes the first driving 2111 and first air valve bridge output terminal of input terminal
2112, the first drive link 212 includes the first braking 2121 and first drive link output terminal 2122 of input terminal.For exhaust side or into
Gas side uses the first valve axle assemble, and driving rocking arm is in contact with the first driving input terminal 2111, brake rocker arm and the first braking
Input terminal 2121 is in contact, the first air valve bridge output terminal 2112 and the first drive link output terminal 2122 respectively with two valve assemblies
It is in contact.In the drive mode, two inlet valve synchronous operation, two exhaust valve synchronous operations；In the braking mode, one into
Valve is run, another inlet valve remains closed state, an exhaust valve operation, another exhaust valve remains closing
State.The intake and exhaust side for the exemplary mechanism that Fig. 1 to Fig. 4 is provided uses the first valve axle assemble.
Such as Fig. 8, duaspiracle axle assemble includes duaspiracle bridge 221 and driving rocking arm resetting spring, duaspiracle bridge 221
Input terminal 2212, the first output terminal of duaspiracle bridge 2213 and duaspiracle are driven including the second braking input terminal 2211, second
Bridge second output terminal 2214.For exhaust side or air inlet side using duaspiracle axle assemble, rocking arm and the second driving is driven to input
End 2212 is in contact, and brake rocker arm brakes input terminal 2211 with second and is in contact, the first output terminal of duaspiracle bridge 2213 and the
Two air valve bridge second output terminals 2214 are in contact respectively with two valve assemblies, and driving rocking arm resetting spring provides spring force and drives
Driving rocking arm is with driving the output curved surface moment of adjustable rocker arm to contact.In the drive mode, two inlet valve synchronous operation, two
Exhaust valve is run simultaneously；In the braking mode, two inlet valve synchronous operation, two exhaust valve synchronous operations.
Such as Fig. 7, third valve axle assemble includes 231 and second drive link 232 of third valve bridge, and third valve bridge 231 is logical
It crosses hinged and convex shoulder and drives the second drive link 232, third valve bridge 231 includes the 3rd driving input terminal 2311 and third valve bridge
Output terminal 2312, the second drive link 232 include the 3rd braking 2321 and second drive link output terminal 2322 of input terminal.For exhaust
Side or air inlet side drive input terminal 2311 to be in contact using third valve axle assemble, driving rocking arm with the 3rd, brake rocker arm and the
Three braking input terminals 2321 are in contact, third valve bridge output terminal 2312 and the second drive link output terminal 2322 respectively with two gas
Door attached components touch.In the drive mode, two inlet valve synchronous operation, two exhaust valve synchronous operations；In the braking mode,
Two inlet valve synchronous operations, two exhaust valve synchronous operations.
Such as Fig. 9, Four valve axle assemble includes driving input terminal 2001, braking input terminal 2002 and output terminal 2003.It is right
In exhaust side or air inlet side using Four valve axle assemble, driving rocking arm is in contact with driving input terminal 2001, brake rocker arm and
Braking input terminal 2002 is in contact, and output terminal 2003 drives a valve assembly.
Figure 10 is the schematic diagram of single valve assembly.When rocking arm directly drives valve assembly, valve assembly includes valve actuation
Input terminal 11 and valve actuation input terminal 12.Driving rocking arm is in contact with valve actuation input terminal 11, brake rocker arm and valve system
Dynamic input terminal 12 is in contact.
Claims (6)
1. a kind of change mode continuous variable valve actuator for air, it includes valve assembly, it is characterized in that：It further includes cam, adjustable shakes
Arm, adjustable cam, track, holddown spring, rocking arm, rocking arm resetting spring；The cam includes exhaust brake cam（401）, row
Gas drive moving cam（402）, air inlet brake cam（403）With air inlet driving cam（404）, the adjustable rocker arm include exhaust brake
Adjustable rocker arm（501）, exhaust gas drive adjustable rocker arm（502）, air inlet braking adjustable rocker arm（503）Adjustable rocker arm is driven with air inlet
（504）, the adjustable cam include exhaust brake adjustable cam（801）, exhaust gas drive adjustable cam（802）, air inlet braking can
Adjust cam（803）Adjustable cam is driven with air inlet（804）, the track include exhaust brake track（601）, exhaust gas drive track
（602）, air inlet braking orbit（603）Track is driven with air inlet（604）, the rocking arm include exhaust brake rocking arm（301）, exhaust
Drive rocking arm（302）, air inlet brake rocker arm（303）Rocking arm is driven with air inlet（304）, the rocking arm resetting spring, which includes at least, to be arranged
Gas brake rocker arm resetting spring（901）With air inlet brake rocker arm resetting spring（902）, the valve assembly include intake valve assembly
And exhaust valve assemblies；The adjustable rocker arm is provided with adjustable end（51）, input terminal（52）With output curved surface（53）；Exhaust brake can
Adjust rocking arm（501）Adjustable end simultaneously with exhaust brake adjustable cam（801）With exhaust brake track（601）Contact, exhaust are driven
Dynamic adjustable rocker arm（502）Adjustable end simultaneously with exhaust gas drive adjustable cam（802）With exhaust gas drive track（602）Contact, into
Gas brakes adjustable rocker arm（503）Adjustable end simultaneously with air inlet brake adjustable cam（803）With air inlet braking orbit（603）It connects
It touches, air inlet driving adjustable rocker arm（504）Adjustable end simultaneously with air inlet drive adjustable cam（804）Track is driven with air inlet
（604）Contact, each holddown spring provide spring force and drive exhaust brake adjustable rocker arm respectively（501）Input terminal and exhaust brake
Cam（401）Moment contact, exhaust gas drive adjustable rocker arm（502）Input terminal and exhaust gas drive cam（402）Moment contact, into
Gas brakes adjustable rocker arm（503）Input terminal and air inlet brake cam（403）Moment contact, air inlet driving adjustable rocker arm（504）
Input terminal and air inlet driving cam（404）Moment contacts, exhaust brake adjustable rocker arm（501）Output curved surface pass through be vented system
Shake arm（301）Drive exhaust valve assemblies, exhaust gas drive adjustable rocker arm（502）Output curved surface pass through exhaust gas drive rocking arm
（302）Drive exhaust valve assemblies, air inlet braking adjustable rocker arm（503）Output curved surface pass through air inlet brake rocker arm（303）Driving
Intake valve assembly, air inlet driving adjustable rocker arm（504）Output curved surface rocking arm is driven by air inlet（304）Drive inlet valve group
Part, exhaust brake rocking arm resetting spring（901）Spring force is provided and drives exhaust brake rocking arm（301）With exhaust brake adjustable rocker arm
（501）The output curved surface moment contact, air inlet brake rocker arm resetting spring（902）Spring force is provided and drives air inlet brake rocker arm
（303）Adjustable rocker arm is braked with air inlet（503）The output curved surface moment contact.
2. a kind of change mode continuous variable valve actuator for air according to claim 1, it is characterized in that：The adjustable cam includes
Basic circle section and raised section；Under drive pattern, the basic circle section of adjustable cam and corresponding adjustable end in contact are braked；Under braking mode,
Drive the basic circle section of adjustable cam and corresponding adjustable end in contact.
3. a kind of change mode continuous variable valve actuator for air according to claim 1, it is characterized in that：The valve axle assemble is adopted
With the first valve axle assemble, duaspiracle axle assemble, third valve axle assemble or Four valve axle assemble；First air valve bridge
Component includes the first air valve bridge（211）With the first drive link（212）, the first air valve bridge（211）It is driven by boss drive first
Bar（212）, the first air valve bridge（211）Including the first driving input terminal（2111）With the first air valve bridge output terminal（2112）, first
Drive link（212）Including the first braking input terminal（2121）With the first drive link output terminal（2122）；The duaspiracle bridge group
Part includes duaspiracle bridge（221）With driving rocking arm resetting spring, duaspiracle bridge（221）Including the second braking input terminal
（2211）, second driving input terminal（2212）, the first output terminal of duaspiracle bridge（2213）With duaspiracle bridge second output terminal
（2214）；The third valve axle assemble includes third valve bridge（231）With the second drive link（232）, third valve bridge（231）
Second drive link is driven by hinged and shoulder（232）, third valve bridge（231）Including the 3rd driving input terminal（2311）With
Three valve bridge output terminal（2312）, the second drive link（232）Including the 3rd braking input terminal（2321）It is exported with the second drive link
End（2322）；The Four valve axle assemble includes driving input terminal（2001）, braking input terminal（2002）And output terminal
（2003）；For exhaust side or air inlet side using the first valve axle assemble, rocking arm and the first driving input terminal are driven（2111）Phase
Contact, brake rocker arm and the first braking input terminal（2121）It is in contact, the first air valve bridge output terminal（2112）With the first drive link
Output terminal（2122）It is in contact respectively with two valve assemblies；For exhaust side or air inlet side using duaspiracle axle assemble, drive
Shake arm and the second driving input terminal（2212）It is in contact, brake rocker arm and the second braking input terminal（2211）It is in contact, second
The first output terminal of air valve bridge（2213）With duaspiracle bridge second output terminal（2214）It is in contact, drives with two valve assemblies respectively
Shake arm resetting spring offer spring force to drive driving rocking arm and the output curved surface moment of adjustable rocker arm is driven to contact；For exhaust
Side or air inlet side drive rocking arm and the 3rd driving input terminal using third valve axle assemble（2311）Be in contact, brake rocker arm with
3rd braking input terminal（2321）It is in contact, third valve bridge output terminal（2312）With the second drive link output terminal（2322）Respectively
It is in contact with two valve assemblies；For exhaust side or air inlet side using Four valve axle assemble, driving rocking arm is inputted with driving
End（2001）It is in contact, brake rocker arm and braking input terminal（2002）It is in contact, output terminal（2003）Drive a valve assembly.
4. a kind of change mode continuous variable valve actuator for air according to claim 1, it is characterized in that：Rocking arm directly drives valve
During component, the valve assembly includes valve actuation input terminal（11）With valve actuation input terminal（12）；Drive rocking arm and valve
Drive input terminal（11）It is in contact, brake rocker arm and valve actuation input terminal（12）It is in contact.
5. a kind of change mode continuous variable valve actuator for air according to claim 1, it is characterized in that：The adjustable end（51）Two
There are two chucks for side setting（54）.
6. a kind of change mode continuous variable valve actuator for air according to claim 1, it is characterized in that：The adjustable rocker arm it is defeated
Go out curved surface and drive rocking arm directly or by very cup, push rod；The rocking arm is directly or by air valve bridge Component driver valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711219781.3A CN108071443B (en) | 2017-11-29 | 2017-11-29 | Variable-mode continuously variable valve mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711219781.3A CN108071443B (en) | 2017-11-29 | 2017-11-29 | Variable-mode continuously variable valve mechanism |
Publications (2)
| Publication Number | Publication Date |
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| CN108071443A true CN108071443A (en) | 2018-05-25 |
| CN108071443B CN108071443B (en) | 2020-01-14 |
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| CN201711219781.3A Expired - Fee Related CN108071443B (en) | 2017-11-29 | 2017-11-29 | Variable-mode continuously variable valve mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113829A (en) * | 2018-08-09 | 2019-01-01 | 姬腾飞 | A kind of engine braking apparatus |
Citations (5)
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|---|---|---|---|---|
| DE102005039663A1 (en) * | 2004-08-20 | 2006-03-09 | Hitachi, Ltd. | Cylinder shut-off control device of an internal combustion engine |
| JP2008303773A (en) * | 2007-06-07 | 2008-12-18 | Hitachi Ltd | Variable valve system of internal combustion engine |
| CN107023342A (en) * | 2017-06-07 | 2017-08-08 | 大连理工大学 | A kind of change pattern valve-driving system |
| CN107100686A (en) * | 2017-06-07 | 2017-08-29 | 大连理工大学 | A kind of single camshaft switch fulcrum type becomes pattern valve-driving system |
| CN108071442A (en) * | 2017-11-29 | 2018-05-25 | 大连理工大学 | A kind of change pattern valve mechanism |
-
2017
- 2017-11-29 CN CN201711219781.3A patent/CN108071443B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005039663A1 (en) * | 2004-08-20 | 2006-03-09 | Hitachi, Ltd. | Cylinder shut-off control device of an internal combustion engine |
| JP2008303773A (en) * | 2007-06-07 | 2008-12-18 | Hitachi Ltd | Variable valve system of internal combustion engine |
| CN107023342A (en) * | 2017-06-07 | 2017-08-08 | 大连理工大学 | A kind of change pattern valve-driving system |
| CN107100686A (en) * | 2017-06-07 | 2017-08-29 | 大连理工大学 | A kind of single camshaft switch fulcrum type becomes pattern valve-driving system |
| CN108071442A (en) * | 2017-11-29 | 2018-05-25 | 大连理工大学 | A kind of change pattern valve mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113829A (en) * | 2018-08-09 | 2019-01-01 | 姬腾飞 | A kind of engine braking apparatus |
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|---|---|
| CN108071443B (en) | 2020-01-14 |
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