CN110344909A - A kind of electrodynamic type engine braking apparatus - Google Patents

A kind of electrodynamic type engine braking apparatus Download PDF

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Publication number
CN110344909A
CN110344909A CN201910758421.3A CN201910758421A CN110344909A CN 110344909 A CN110344909 A CN 110344909A CN 201910758421 A CN201910758421 A CN 201910758421A CN 110344909 A CN110344909 A CN 110344909A
Authority
CN
China
Prior art keywords
plunger
cross
drilled hole
slide plate
rocker arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910758421.3A
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Chinese (zh)
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CN110344909B (en
Inventor
俞黎明
俞振寰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Liming Zhizhuang Co Ltd
Original Assignee
Zhejiang Liming Zhizhuang Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Liming Zhizhuang Co Ltd filed Critical Zhejiang Liming Zhizhuang Co Ltd
Priority to CN201910758421.3A priority Critical patent/CN110344909B/en
Priority to PCT/CN2019/103248 priority patent/WO2021031230A1/en
Priority to EP19908081.3A priority patent/EP3800332B1/en
Publication of CN110344909A publication Critical patent/CN110344909A/en
Application granted granted Critical
Publication of CN110344909B publication Critical patent/CN110344909B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type
    • 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
    • F01L1/181—Centre pivot rocking arms
    • 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
    • F01L1/267—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 with means for varying the timing or the lift of the valves
    • 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
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L2001/467—Lost motion springs
    • 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
    • F01L2013/10—Auxiliary actuators for variable valve timing
    • F01L2013/103—Electric motors
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • 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
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/05—Timing control under consideration of oil condition
    • 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
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/06—Timing or lift different for valves of same cylinder
    • 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
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/10—Providing exhaust gas recirculation [EGR]
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/01—Absolute values
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

A kind of electrodynamic type engine braking apparatus.It is characterized by comprising control mechanisms and electric driving mechanism, control mechanism includes shell, execute plunger, slide assemblies, slide assemblies include sliding block, first elastic component, transmit plunger, second elastic component, transmitting plunger has the second position that the first position being disposed entirely in sliding block and stretching sliding block link into an integrated entity sliding block and shell, electric driving mechanism includes actuating motor, slide plate frame, slide plate, contact leaf spring, actuating motor can push slide plate to slide along slide plate frame, it drives contact leaf spring to push and executes plunger sliding, it drives transmitting plunger mobile and keeps it in the second position.It the advantage is that setting electric driving mechanism and control mechanism, by actuating motor control action, existing use machine oil is substituted as work or drive control medium, eliminate machine oil bring security risk, increase engine braking using area, it reduces engine braking and enters into and exits from the time, reduce fuel consumption, refine engine braking performance classification more.

Description

A kind of electrodynamic type engine braking apparatus
Technical field
The present invention relates to a kind of medium and heavy diesel oil and natural gas engines, and in particular to a kind of electrodynamic type engine braking dress It sets.
Background technique
China mountain range is numerous, and mountain area area is vast, accounts for about the 69% of territory total area, heavy goods vehicle is in the long downhill path in mountain area Section, driver frequently use service brake, and large energy can be absorbed in running brake in a short time, but with braking time Increase, surface of friction pair temperature between brake drum and shoe brake increases, and coefficient of friction reduces, and ultimately causes brake efficiency The decline even unsafe condition of brake failure cause major traffic accidents.In order to improve the driving safety of heavy type commercial automobile, It needs to increase auxiliary braking system on the basis of service brake, to guarantee vehicle during descending with sustained Brake force.
Automobile-used auxiliary braking system is broadly divided into two classes: retarder and engine braking system.Engine braking system by It is used widely the advantages that its structure is simple, easy for installation, cheap.
Engine braking technology refers to that driver lifts accelerator pedal in vehicle traveling process, loosens the clutch, and utilizes hair Generated resistance to compression pression and intake and exhaust resistance and frictional force are formed by braking masterpiece to driving wheel in motivation compression travel With being allowed to brake automobile.Engine braking technology is divided into Compression Engine braking, deflation type engine braking and portion Divide three kinds of deflation type engine braking.Compression Engine braking is to open exhaust valve or auxiliary gas near Door；Deflation type engine braking is to open exhaust valve in entire cycle of engine；Part deflation type engine braking is to start Most of stroke of machine circulation opens exhaust valve.The application of engine braking technology efficiently reduces using frequently for running brake Rate, vehicle, using engine braking, can use braking at precipitous road surfaces such as lower long slope, rugged hill paths to avoid because of long-time Device causes the temperature of brake bush to increase, and declines brake force or even ineffective.
Engine braking apparatus is capable of providing one or multiple auxiliary valve lifts, for realizing engine braking function Energy.Have multiple patents of invention at present and be related to the application of technique, it includes additional one that major technique, which is outside the main lift of cam, A or several auxiliary lifts can also increase a cam dedicated for braking according to the needs of engine operation and start mechanism Dynamic device makes auxiliary lifts work and (realize engine braking function) or it is made not work.
Patent CN200980158946.8 is the dedicated rocker arm h type engine h system of Jacobs Vehicle Systems Inc.'s application Dynamic device, a kind of system for driving engine exhaust port of the disclosure of the invention, the system comprises rocker arm shafts, have control fluid Supply passageway and exhaust rocker arm, are pivotably mounted on rocker arm shaft.Brake rocker arm of engine can include central opening, The hydraulic path that central opening is connect with control valve, and the fluid passage that control valve is connect with action piston assembly.
Patent CN201080019296.1 is Jacobs Vehicle Systems Inc.'s application for engine braking and exhaust The lost motion variable valve actuation system opened in advance, the system may include the first cam, and first cam has compression Release projection part and prerelease door open convex portion, and the prerelease door is opened convex portion and is connected to first On the hydraulic lost motion system of rocker arm.The piston of hydraulic way actuating can selectively extend from the hydraulic lost motion system, with Compression release actuating is provided to the exhaust valve or prerelease door opens actuating.The piston of hydraulic way actuating can be used as Relay piston in MS master-slave piston circuit is arranged in fixed shell, or alternatively as hydraulic piston slideably cloth It sets in rocker arm.
Patent CN200910140026.5 is the single with valve auxiliary control of Man Nutzfahrzeuge AG's application First engine braking apparatus and the method for engine braking, the exhaust valve of the brake apparatus include one by means of one The mechanical bindiny mechanism of hydraulic valve Auxiliary Control Element is connected with camshaft.Hydraulic valve Auxiliary Control Element will be vented Valve is maintained on the position temporarily opened.Hydraulic valve Auxiliary Control Element can be by means of the main oil time relative to internal combustion engine The auxiliary oil return line of the additional setting in road is switched on and off.
Engine braking patent described above is all the medium using engine motor oil as transmitting valve motion rule, braking The characteristics of motion of valve is largely dependent upon some characteristics of machine oil, when as excessively high such as machine oil void fraction, braking valve lift It can lose, to influence braking ability.In addition, when engine oil viscosity is excessively high, also will affect engine braking when oil temperature is too low Normal work.Therefore, when the above engine braking technology requires that oil temperature is higher than some limit value (such as 40 DEG C), engine Braking could intervene, thus it is so also can limit value engine braking applying working condition.For another example mechanism is started using machine oil driving Dynamic, the time that engine braking is intervened and exited is generally longer (> 0.4s), turns in this way to engine braking and fired state The process of changing has an impact, and causes engine transient conversion process unstable.
Summary of the invention
In order to overcome the shortcomings of that background technique, the present invention provide a kind of electrodynamic type engine braking apparatus.
The technical solution adopted in the present invention: a kind of electrodynamic type engine braking apparatus, including
Rocker arm shaft；
Camshaft is arranged in parallel with rocker arm shaft, and has the exhaust cam and auxiliary cam being adjacently positioned；
Exhaust valve comprising first row valve, second row valve and cross at first row valve and the laterostigmatal gas of second row The raft of pontoons；
Exhaust rocker arm is rotatably installed on rocker arm shaft, front end with air valve bridge is corresponding contacts, its rear end and exhaust cam Corresponding contact；
Auxiliary rocker arm is rotatably installed on rocker arm shaft, and is disposed adjacent with exhaust rocker arm, its rear end and auxiliary cam phase It is corresponding；
Auxiliary rocker arm can be pushed down and is kept in contact with auxiliary cam by elastic element；
Sliding pin is arranged in air valve bridge, and one end and first row valve contacts, the other end are pierced by air valve bridge；
Control mechanism, setting is in auxiliary rocker arm front end and corresponding with sliding pin comprising and shell executes plunger, slide assemblies, It is formed with the first cross-drilled hole and longitudinal groove on the shell, the longitudinal groove lower ending opening, upper end passes through the first cross-drilled hole and the The intersection setting of one cross-drilled hole, the execution plunger are slidably arranged in the first cross-drilled hole, and the slide assemblies are slidably arranged in longitudinal recessed In slot, the execution plunger at one end is extended to outside the first cross-drilled hole, and the other end offsets with slide assemblies, and the slide assemblies include sliding Circumferentially the axial sliding of limit cooperates for block, the first elastic component, transmitting plunger, the second elastic component, the sliding block and longitudinal groove, described Sliding block lower end extends downward into outside longitudinal groove, and the second cross-drilled hole corresponding with the first cross-drilled hole is additionally provided on the sliding block, described First elastic component can drive sliding block to move down and the second cross-drilled hole is made to coincide with the first cross-drilled hole, the transmitting plunger sliding setting In the second cross-drilled hole, and the length for transmitting plunger is less than or equal to the length of the second cross-drilled hole, and second elastic component can drive biography Plunger is passed towards one end movement for executing plunger and the end end face is made to be flush with the second cross-drilled hole end face, the transmitting plunger has It is disposed entirely within the first position in the second cross-drilled hole, and the opposite plunger other end that executes of transmitting plunger stretches out the second cross-drilled hole and shell The locked second position of body；
Electric driving mechanism comprising actuating motor, slide plate frame, slide plate, contact leaf spring, the slide plate frame are arranged in auxiliary rocker arm Top, the slide plate and rocker arm shaft be arranged in parallel and be slidably arranged on slide plate frame, and the contact leaf spring is mounted on slide plate, And with execute that plunger is corresponding contacts, output end and the slide plate of the actuating motor are linked, and slide plate can be pushed along slide plate frame cunning It moves.
The longitudinal groove upper end is equipped with spring groove, and the longitudinal groove lower end is equipped with the first stop collar, and the sliding block is in "convex" shaped, lower end, which passes through the first stop collar and limits with the first stop collar, to be cooperated, and first elastic component is spring, and is set It sets in spring groove, both ends offset with shell, sliding block respectively.
Second cross-drilled hole is ladder type hole, successively includes macropore, mesoporous, aperture, and the aperture is identical as the first cross-drilled hole； The transmitting plunger is adapted with aperture, and outer ring is formed with the first annular boss being adapted to mesoporous, is in " ten " font, described Second stop collar is installed in macropore, limits and cooperates with the first annular boss of transmitting plunger, second elastic component is spring, And it is set in transfer column beyond the Great Wall, both ends offset with sliding block, first annular boss respectively.
The execution plunger outer ring is formed with the second annular convex platform, and whole is in " ten " font, and first cross-drilled hole end is set Have a third stop collar, the execution plunger passes through third stop collar and extends to outside the first cross-drilled hole, and by the second annular convex platform with The limit cooperation of third stop collar.
The auxiliary rocker arm front end is equipped with longitudinal hole, is formed with longitudinally guiding slot, the longitudinal direction on the longitudinal hole side wall The upper end in hole is equipped with adjustment bolt, and the longitudinal hole lower end is equipped with the 4th stop collar；The shell is slidably arranged in longitudinal hole, The execution plunger passes through longitudinally guiding slot and extends to outside auxiliary rocker arm, and the sliding block extends downward into vertical across the 4th stop collar Below to hole；Be additionally provided with third elastic component between 4th stop collar and shell, the third elastic component can drive shell with Adjustment bolt is kept in contact.
There are two the longitudinally guiding slot is set, and it is symmetricly set on longitudinal hole side wall；There are two the shell two sides are set Guide ledges, whole is in " ten " font；The guide ledges are correspondingly arranged in longitudinally guiding slot, and first cross-drilled hole passes through Two guide ledges settings.
The actuating motor is rotating electric machine, and the output shaft of the actuating motor is equipped with the execution of perpendicular setting Bar, the slide plate are equipped with execution hole compatible with bar is executed, and the execution bar, which passes through, executes hole.
The actuating motor is linear motor, and the slide plate is equipped with guiding corresponding with the output end of actuating motor Frame；Return springs are additionally provided between the slide plate frame and contact leaf spring.
The course of work of above-mentioned engine braking apparatus:
When engine work, actuating motor does not work, and transmits plunger and is in first under the action of the second elastic component It sets, sliding block and shell are in the state not being locked up, and when the rotation of auxiliary cam lift actuation auxiliary rocker arm, sliding pin connects with sliding block Touching, the elastic force for driving sliding block to overcome the first elastic component move up, and the elastic force of the first elastic component is not enough to drive sliding pin real It is now vented, does not influence the movement of exhaust valve, guarantee engine work.
When engine braking operation, actuating motor work pushes by slide plate, contact leaf spring and executes plunger action, holds Row plunger pushes transfer column to enter into the second cross-drilled hole, while transmitting plunger and overcoming the elastic force of the second elastic component mobile, stretches Second cross-drilled hole out is in the second position, so that sliding block and shell are in lockup state, when auxiliary cam lift actuation assists When rocker arm rotates, sliding block is contacted with sliding pin, and sliding pin is driven to realize that first row valve motion is opened, to realize engine braking Purpose.
When engine is restored to normal work, actuating motor work, slide plate and contact leaf spring reset, and transmitting plunger is the It is restored to first position under the action of two elastic components, while being released plunger is executed from the second cross-drilled hole, sliding block is in shell The state not being locked up, when the rotation of auxiliary cam lift actuation auxiliary rocker arm, sliding pin and shoe contact drive sliding block to overcome the The elastic force of one elastic component moves up, and the elastic force of the first elastic component is not enough to that sliding pin is driven to realize exhaust, does not influence to be vented The movement of door guarantees engine work.
The beneficial effects of the present invention are: 1, elimination uses machine oil bring security risk: engine braking apparatus uses Electric control mechanism driving, when eliminating engine start, due to engine oil viscosity is high, engine oil pressure greatly caused by braking function open by mistake It opens and bring unstable idle speed and emits white cigarette problem；
2, increase engine braking using area: current fluid pressure type or solid chain type engine braking are due to using machine oil as work Make medium, oil temperature and engine oil pressure there are certain requirements, engine braking just can be with when such as requiring 40 °C of oil temperature > Intervention uses engine braking when just starting which limit vehicle, and uses electric control mechanism driving will not be by these Part limitation can use any time after vehicle starting；
3, engine braking enters into and exits from the time and is obviously shortened: traditional fluid pressure type or solid chain type engine braking are due to using Machine oil as working media or drive control medium, engine braking to enter into and exit from the time longer, generally require 0.2s~ 0.4s, and engine braking apparatus can revolve turn around interior completion positive work and negative work in camshaft using electric control mechanism driving Switching promotes engine braking and enters into and exits from 4~5 times of speed.
4, it reduces engine fuel consumption: machine oil is not needed as driving medium, engine using electric control mechanism Machine oil demand and lubricating oil pump supply capability can be reduced suitably, therefore facilitate the reduction of fuel consumption.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of engine braking apparatus of the embodiment of the present invention.
Fig. 2 is the sectional perspective structural schematic diagram of engine braking apparatus of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of auxiliary rocker arm of the embodiment of the present invention and control mechanism.
Fig. 4 is cross-sectional view when control mechanism of the embodiment of the present invention is in first position.
Fig. 5 is cross-sectional view when control mechanism of the embodiment of the present invention is in the second position.
Fig. 6 is section view when control mechanism of the embodiment of the present invention is in first position after the first elastic component of the mobile compression of sliding block Figure.
Fig. 7 is the structural schematic diagram of auxiliary rocker arm of the embodiment of the present invention.
Fig. 8 is the cross-sectional view of shell of the embodiment of the present invention.
Fig. 9 is the bottom view of shell of the embodiment of the present invention.
Figure 10 is the cross-sectional view of sliding block of the embodiment of the present invention.
Figure 11 is the bottom view of sliding block of the embodiment of the present invention.
Figure 12 is the structural schematic diagram that the embodiment of the present invention transmits plunger.
Figure 13 is the cross-sectional view that the embodiment of the present invention executes plunger.
Figure 14 is the structural schematic diagram of actuating motor of the embodiment of the present invention.
Figure 15 is the structural schematic diagram of slide plate of embodiment of the present invention frame.
Figure 16 is the structural schematic diagram of slide plate of the embodiment of the present invention.
Figure 17 is the structural schematic diagram that the embodiment of the present invention contacts leaf spring.
Figure 18 is the structural schematic diagram of another embodiment of the present invention motor-driven mechanism.
Figure 19 is the structural schematic diagram of another embodiment of the present invention motor cabinet.
Figure 20 is the structural schematic diagram of another embodiment of the present invention slide plate frame.
Figure 21 is the structural schematic diagram of another embodiment of the present invention slide plate.
Figure 22 is the structural schematic diagram of another embodiment of the present invention leading truck.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing:
As shown in Figs. 1-2, a kind of engine braking apparatus, including rocker arm shaft 1, camshaft 2, exhaust valve 3, exhaust rocker arm 4, auxiliary Rocker arm 5, elastic element 6, sliding pin 7, control mechanism 8, electric driving mechanism 9.
The rocker arm shaft 1 is arranged in parallel with camshaft 2, have on the camshaft 2 exhaust cam 21 that is adjacently positioned with Auxiliary cam 22,2 rotational energy of camshaft drive exhaust cam 21 and auxiliary cam 22 to rotate simultaneously.
The exhaust valve 3 is including first row valve 31, second row valve 32 and crosses at first row valve 31 and second Air valve bridge 33 on exhaust valve 32, first row valve 31 and second row valve 32 are all made of mushroom valve, for controlling engine The flowing of gas between inner combustion chamber and intake and exhaust manifold.
The exhaust rocker arm 4 is rotatably installed on rocker arm shaft 1, and the front end of the exhaust rocker arm 4 and air valve bridge 33 are right It should contact, rear end is contacted with the correspondence of exhaust cam 21, therefore with the rotation of camshaft 2, exhaust rocker arm 4 can be in exhaust cam 21 under the collective effect of exhaust valve 3 around 1 rotary oscillation of rocker arm shaft, to can be realized by exhaust cam 21, exhaust rocker arm 4 The exhaust stroke of exhaust valve 3.
Wherein, the first idler wheel 41, first idler wheel 41 and row are installed by the first roller shaft in 4 rear end of exhaust rocker arm Gas cam 21 is in contact, and rolls cooperation due to being formed between exhaust cam 21 and the first idler wheel 41, greatly reduces exhaust Frictional force between cam 21 and exhaust rocker arm 4 reduces abrasion, improves service life.
4 front end of exhaust rocker arm, which is additionally provided with, adjusts bolt 43, image angle 42, fastening nut 44, and the image angle 42 passes through special The lower end for adjusting bolt 43 is fitted in tool, and image angle 42 can be freely rotated in certain corner, on the adjusting bolt 43 End is prominent from the top of 4 front end of exhaust rocker arm, and is locked by fastening nut 44, connect it is stronger reliable, it is described as Angle 42 is in contact with air valve bridge 33, since the freedom degree of image angle 42 is higher, with the wobbling action of exhaust rocker arm 4, and guarantee and gas The contact effect of the raft of pontoons 33 guarantees the operation is stable.
The auxiliary rocker arm 5 is rotatably installed on rocker arm shaft 1, is disposed adjacent with exhaust rocker arm 4, the auxiliary rocker arm 5 rear end is corresponding with auxiliary cam 22, and is pushed down by elastic element 6 and be in contact with auxiliary cam 22, therefore camshaft 2 revolves When turning, auxiliary cam 22 is able to drive auxiliary rocker arm 5 along 1 rotary oscillation of rocker arm shaft.
Likewise, the second idler wheel 57, second rolling can be installed by the second roller shaft in 5 rear end of auxiliary rocker arm Wheel 57 is contacted with auxiliary cam 22, is formed between auxiliary cam 22 and the second idler wheel 57 and is rolled cooperation, and it is convex to greatly reduce auxiliary Frictional force between wheel 22 and auxiliary rocker arm 5 reduces abrasion, improves service life.
Wherein, the auxiliary cam 22 includes being arranged two in basic circle and one or two peaches, such as the present embodiment A peach respectively includes a braking peach and an EGR peach or a BGR peach, and braking peach is for providing One braking lift, optional EGR peach can provide an EGR lift when engine makees positive work, and optional BGR peach can be One BGR lift is provided when engine braking.
In addition, elastic element 6 also has many selectable modes, in the present embodiment, elastic component 6 uses spring, one End is fixed on the rear end of auxiliary rocker arm 5, and the other end is fixed on spring(-supported) mount (being not drawn on figure), and spring(-supported) mount is fixed on engine cylinder On lid or other components fixed, in engine working process, there is elastic element 6 enough spring forces assist engine Rocker arm 5 is in contact with auxiliary cam 22 always.
Certainly, in engine working process, auxiliary rocker arm 5 can by the other modes such as such as leaf spring, torsional spring keep with The contact of auxiliary cam 22.
The sliding pin 7 is arranged in air valve bridge 33, and one end is contacted with first row valve 31, and the other end is pierced by air valve bridge 33, when the active force sufficiently large by one of sliding pin 7, first row valve 31 will be pushed to act, realize first row valve 31 Exhaust stroke.
As shown in Fig. 3-13, the control mechanism 8 is arranged in 5 front end of auxiliary rocker arm and, the control corresponding with sliding pin 7 Mechanism 8 includes shell 81, executes plunger 82, slide assemblies.
It is formed with the first cross-drilled hole 811 and longitudinal groove 812 on the shell 81,812 lower ending opening of longitudinal groove, on Intersect setting with the first cross-drilled hole 811 across the first cross-drilled hole 811 in end.
82 outer ring of execution plunger is formed with the second annular convex platform 821, and whole is in " ten " font, first cross-drilled hole 811 end is equipped with third stop collar 89, and the execution plunger 82 is slidably arranged in the first cross-drilled hole 811, and one end passes through It extends to after third stop collar 89 outside first cross-drilled hole 811, and is matched by the second annular convex platform 821 and the limit of third stop collar 89 It closes.
The slide assemblies are slidably arranged in longitudinal groove 812 comprising sliding block 83, the first elastic component 84, transfer column Fill in the 85, second elastic component 86.
It is formed between the sliding block 83 and longitudinal groove 812 and circumferentially limits the matching relationship axially slid, it is straight by 4 The cooperation of edged surface realizes that sliding block 83 groove 812 can only slide without being able to rotate along longitudinal direction.
812 upper end of longitudinal groove is equipped with spring groove 813, and 812 lower end of longitudinal groove is equipped with the first stop collar 87, The sliding block 83 is in the shape of a " convex ", and lower end, which passes through the first stop collar 87 and limits with the first stop collar 87, to be cooperated, wherein described First elastic component 84 is spring, and is arranged in spring groove 813, and both ends offset with shell 81, sliding block 83 respectively, can drive cunning The sliding downwards of block 83 keeps limit to contact with the first stop collar 87.
Second cross-drilled hole 831 corresponding with the first cross-drilled hole 811 is additionally provided on the sliding block 83, when sliding block 83 is in the first elasticity Under the action of part 84, be maintained at contacted with the first stop collar 87 limit position when, the second cross-drilled hole 831 just with the first cross-drilled hole 811 coincide.
Wherein, second cross-drilled hole 831 is ladder type hole, includes successively macropore 8311, mesoporous 8312, aperture 8313, leans on Nearly one end for executing plunger 82 is macropore 8311, and the aperture 8313 is consistent with the first cross-drilled hole 811.
The length that the transmitting plunger 85 slides is less than or equal to the length of the second cross-drilled hole 831, and the transmitting plunger 85 is set It sets in the second cross-drilled hole 831, is adapted with aperture 8313, transmitting 85 outer ring of plunger, which is then formed with, to be adapted to mesoporous 8312 First annular boss 851, whole is in " ten " font, and the second stop collar 88, second elasticity are equipped in the macropore 8311 Part 86 is spring, and is set in outside transmitting plunger 85, and both ends offset with sliding block 83, first annular boss 851 respectively, can drive Transmitting plunger 85 slides to 88 direction of the second stop collar and first annular boss 851 is made to keep limit to connect with the second stop collar 88 Touching.
When transmitting plunger 85 under the action of the second elastic component 86, it is maintained at the position that limit is contacted with the second stop collar 88 When, transmitting plunger 85 is disposed entirely in the second cross-drilled hole 831, and transmits one end and the end face phase of the second cross-drilled hole 831 of plunger 85 It flushes.
When executing plunger 82 by external force movement, transmitting plunger 85 can be pushed mobile, when execution plunger 82 is not by it When his external force, transmitting plunger 85 can reset under the action of the second elastic component 86, while pushing and executing the reset of plunger 82, therefore passing Passing plunger 85 has the first position being disposed entirely in the second cross-drilled hole 831, and the opposite execution plunger 82 of transmitting plunger 85 is separately The second position that the second cross-drilled hole 831 is locked with shell 81 is stretched out in one end.
In addition, 5 front end of auxiliary rocker arm is equipped with longitudinal hole 51, longitudinally guiding slot is formed on 51 side wall of longitudinal hole 52, the upper end of the longitudinal hole 51 is equipped with adjustment bolt 53, and adjustment bolt 53 passes through the fixed locking of locking nut 56.
51 lower end of longitudinal hole is additionally provided with the 4th stop collar 54；The shell 81 is slidably arranged in longitudinal hole 51, institute It states execution plunger 82 to extend to outside auxiliary rocker arm 5 across longitudinally guiding slot 52, the sliding block 83 passes through the 4th stop collar 54 downwards Extend to 51 lower section of longitudinal hole.
Third elastic component 55 is additionally provided between 4th stop collar 54 and shell 81, the third elastic component 55 is usually Spring, both ends offset with shell 81 and the 4th stop collar 54 respectively, and shell 81 can be driven to be kept in contact with adjustment bolt 53.
It is directly anchored to 5 front end of auxiliary rocker arm compared to by shell 81, above structure enables shell 81 to float up and down, It drives control mechanism 8 is whole to float up and down, by adjusting bolt 53, cooperates third elastic component 55, control mechanism 8 can be carried out Fine position realizes that the spacing between sliding block 83 and sliding pin 7 adjusts.
Wherein, it there are two the longitudinally guiding slot 52 is set, and is symmetricly set on 51 side wall of longitudinal hole, 81 liang of the shell Side is correspondingly provided with two guide ledges 814, and whole shell 81 is in " ten " font；The guide ledges 814 are correspondingly arranged at longitudinal direction In guide groove 52, and first cross-drilled hole 811 passes through two guide ledges 814 and is arranged.
As shown in Figure 1, Figure 2 and shown in Figure 14-17, the electric driving mechanism 9 includes actuating motor 91, slide plate frame 92, slide plate 93, leaf spring 94 is contacted.
The slide plate frame 92 is fixedly mounted on the cylinder cap or other retaining elements of engine comprising mounting plate 921, Successively spaced several sliding slots 922, the setting of mounting plate 921 are assisting along its length for the side of mounting plate 921 The top of Rocker arm 5 and its length direction is arranged in parallel with rocker arm shaft 1.
The elongated structure of the slide plate 93, passes through sliding slot 922 and the sliding of sliding slot 922 cooperates, and sets on the slide plate 93 There are an execution hole 931 and several card slots 932.
The actuating motor 91 is fixedly mounted on the cylinder cap or other retaining elements of engine by motor cabinet 95, described to hold Row motor 91 uses rotating electric machine, and output shaft is equipped with the execution bar 911 of perpendicular setting, and the execution bar 911 passes through It executes hole 931 to be arranged, when actuating motor 91 rotates, can drive and execute the rotation of bar 911, so as to stir slide plate 93 along the chute 922 slidings.
The contact leaf spring 94 is in 7 " character form structures, and the slide plate 93 is equipped with card slot compatible with contact leaf spring 94 932,94 upper end of contact leaf spring passes through card slot 932, and bends and cooperate with the limit of slide plate 93, installs more convenient.
When engine braking or EGR work, actuating motor 91 rotates, and slide plate 93 can be driven to slide by executing bar 911, Slide plate band 94 synchronizing moving of moving contacting plate spring, so that contact leaf spring 94, which is in contact and pushes with execution plunger 82, executes plunger 82, It is mobile to execute the elastic force that plunger 82 can push transmitting plunger 85 to overcome the second elastic component 86, it is made to slide onto the second position.
When engine restores to work normally, the reversion of actuating motor 91 resets, and slide plate 93 can be driven sliding by executing bar 911 It moves and resets, slide plate 93 is mobile with moving contacting plate spring 94, makes to contact leaf spring 94 and separates with plunger 84 is executed, and transmitting plunger 85 can be the It is resetted under the action of two elastic components 86 and slides onto first position, while pushed and executing the reset of plunger 82.
It contacts leaf spring 94 and executes 841 face contact of enforcement division of plunger 84, so that auxiliary rocker arm 5 is when rotated, it also can be true Protect the contact between contact leaf spring 94 and enforcement division 841, it is ensured that execute plunger 84 and be maintained at first position, and use contact chip When the structure of spring 94 and the enforcement division 841 for executing plunger 84 contact, using the elastic property of contact leaf spring 94 itself, so that contact In the process, there is certain overrun distance, guarantee that cooperation is stablized.
In addition, multiple contact chips spring 94 is arranged in slide plate 93, each 94 arranged for interval of contact leaf spring can start with each group respectively Machine braking device is corresponding, and synchronization action between each cylinder, not only structure is more compact, but also brakes fast and stable.
It is the another embodiment of the electric driving mechanism 9 comprising actuating motor 91, slide plate frame such as Figure 18-22 92, slide plate 93, contact leaf spring 94.
The slide plate frame 92 include several spaced apart mounting bases 923, and be fixedly mounted on engine cylinder cap or On the other retaining elements of person, it is correspondingly arranged on sliding slot 922 in the mounting base 923, wherein in one end a mounting base 923 also Equipped with a spring groove 924.
The elongated structure of the slide plate 93, passes through sliding slot 922 and the sliding of sliding slot 922 cooperates, and the slide plate 93 is corresponding One end of spring groove 924 is bent to form spring base 933.
Between the spring base 933 and spring groove 924 be equipped with return springs 96, the return springs be spring, two End offsets with spring base 933 and spring groove 924 respectively.
The actuating motor 91 is fixedly mounted on the cylinder cap or other retaining elements of engine by motor cabinet 95, institute Stating actuating motor 91 is linear motor, and the slide plate 93 is equipped with leading truck 97 corresponding with the output end of actuating motor 91.
In order to further ensure action stability, the motor cabinet 95 is equipped with second sliding slot corresponding with sliding slot 922 951, for slide plate 93 also cross second sliding slot 951, the motor cabinet 95 is equipped with guiding axis 98, and leading truck 97 is equipped with suitable with it The pilot hole 971 matched, guiding axis 98 are arranged across pilot hole 971, so that stable action when leading truck 97 translates.
When engine braking or EGR work, actuating motor 91 rotates, and output end pushes leading truck 97 to translate, guiding Frame 97 drives slide plate 93 to slide, and slide plate 93 is with 94 synchronizing moving of moving contacting plate spring, so that contact leaf spring 94 and execution 82 phase of plunger It contacts and pushes and execute plunger 82, executing plunger 82 can push transmitting plunger 85 that the elastic force of the second elastic component 86 is overcome to move It is dynamic, so that it is slid onto the second position.
When engine restores to work normally, actuating motor 91 is reversely rotated, and output end is withdrawn, and slide plate 93 is resetting bullet Property part 96 reset, and with moving contacting plate spring 94, leading truck 97 reset, transmitting plunger 85 then can be under the action of the second elastic component 86 Reset slides onto first position, while pushing and executing the reset of plunger 82.
The course of work of above-mentioned engine braking apparatus:
When engine work, actuating motor 91 does not work, and transmits plunger 85 under the action of the second elastic component 86, is in First position, sliding block 83 is not locked up at this time, when the rotation of 22 lift actuation auxiliary rocker arm 5 of auxiliary cam, sliding pin 7 and sliding block 83, drive biography sliding block 83 that the elastic force of the first elastic component 84 is overcome to move up, the elastic force of the first elastic component 84 is not enough to drive Dynamic sliding pin 7 realizes exhaust, does not influence the movement of exhaust valve, guarantees engine work.
When engine braking operation, actuating motor 91 works, and pushes by slide plate 93, contact leaf spring 94 and executes plunger 82 It is mobile, the elastic force movement that plunger 82 can push transmitting plunger 85 to overcome the second elastic component 86 is executed, it is made to slide onto second Position, sliding block 83 is combined into one with shell 81 at this time, when the rotation of 22 lift actuation auxiliary rocker arm 5 of auxiliary cam, sliding block 83 It is contacted with sliding pin 7, and sliding pin 7 is driven to realize that first row valve motion is opened, to realize the purpose of engine braking.
When engine is restored to normal work, actuating motor 91 works, and slide plate 93 and contact leaf spring 94 reset, transfer column Plug 85 can then reset under the action of the second elastic component 86 slides onto first position, while will execute plunger 82 from the second cross-drilled hole It releases, at this time sliding block 83 and shell 81 not locking, when the rotation of 22 lift actuation auxiliary rocker arm 5 of auxiliary cam, sliding pin 7 and sliding block 83 contacts, the elastic force that sliding block 83 can be driven to overcome the first elastic component 84 move up, and do not influence the movement of exhaust valve, guarantee hair Motivation works normally.
Above-mentioned electrodynamic type engine braking apparatus and existing the starting using machine oil as transmitting valve motion rule medium Machine braking device is compared, and there are following advantages:
1, eliminate and use machine oil bring security risk: engine braking apparatus is driven using actuating motor, and passes through pure machine The linkage structure of tool formula cooperates, when eliminating engine start, due to engine oil viscosity is high, engine oil pressure greatly caused by braking work It can open by mistake and open and bring unstable idle speed and emit white cigarette problem；
2, increase engine braking using area: current fluid pressure type or solid chain type engine braking are due to using machine oil as work Make medium, oil temperature and engine oil pressure there are certain requirements, engine braking just can be with when such as requiring 40 °C of oil temperature > Intervention uses engine braking when just starting which limit vehicle, and is driven using actuating motor, and pass through Purely mechanical Linkage structure cooperation, will not be limited by these conditions, can be used any time after vehicle starting；
3, engine braking enters into and exits from the time and is obviously shortened: traditional fluid pressure type or solid chain type engine braking are due to using Machine oil as working media or drive control medium, engine braking to enter into and exit from the time longer, generally require 0.2s~ 0.4s, and engine braking apparatus is driven using actuating motor, and can be in camshaft by the cooperation of the linkage structure of Purely mechanical The switching for revolving turn around interior completion positive work and negative work, promotes engine braking and enters into and exits from 4~5 times of speed.
4, it reduces engine fuel consumption: being driven using actuating motor, and cooperated by mechanical linkage structure, do not needed As driving medium, engine motor oil demand and lubricating oil pump supply capability can be reduced suitably machine oil, therefore facilitate fuel oil The reduction of consumption.
In the description of the present invention, it should be noted 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 " are used for description purposes only, it is not understood to indicate or imply opposite Importance.
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 at this with concrete condition Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two More than.
Every technical staff's notice: of the invention although the present invention is described according to above-mentioned specific embodiment Invention thought be not limited in the invention, any repacking with inventive concept will all be included in this patent protection of the patent right In range.

Claims (8)

1. a kind of electrodynamic type engine braking apparatus, including
Rocker arm shaft (1)；
Camshaft (2) is arranged in parallel with rocker arm shaft (1), and has the exhaust cam (21) and auxiliary cam being adjacently positioned (22)；
Exhaust valve (3) comprising first row valve (31), second row valve (32) and cross at first row valve (31) and the Air valve bridge (33) on two exhaust valves (32)；
Exhaust rocker arm (4) is rotatably installed on rocker arm shaft (1), and front end is contacted with air valve bridge (33) correspondence, its rear end It is contacted with exhaust cam (21) correspondence；
Auxiliary rocker arm (5) is rotatably installed on rocker arm shaft (1), and is disposed adjacent with exhaust rocker arm (4), its rear end with Auxiliary cam (22) is corresponding；
Auxiliary rocker arm (5) can be pushed down and be kept in contact with auxiliary cam (22) by elastic element (6)；
Sliding pin (7), setting is in air valve bridge (33), and one end is contacted with first row valve (31), and the other end is pierced by air valve bridge (33)；
It is characterized by also including
Control mechanism (8), setting is in auxiliary rocker arm (5) front end and corresponding with sliding pin (7) comprising shell (81) executes Plunger (82), slide assemblies are formed with the first cross-drilled hole (811) and longitudinal groove (812) on the shell (81), and the longitudinal direction is recessed Slot (812) lower ending opening, upper end pass through the first cross-drilled hole (811) and intersect setting, the execution plunger (82) with the first cross-drilled hole (811) It is slidably arranged in the first cross-drilled hole (811), the slide assemblies are slidably arranged in longitudinal groove (812), the execution plunger (82) one end extends to the first cross-drilled hole (811) outside, and the other end offsets with slide assemblies, the slide assemblies include sliding block (83), First elastic component (84), transmitting plunger (85), the second elastic component (86), the sliding block (83) and longitudinal groove (812) circumferentially limit The axial sliding cooperation in position, sliding block (83) lower end extends downward into longitudinal groove (812) outside, is additionally provided on the sliding block (83) The second cross-drilled hole (831) corresponding with the first cross-drilled hole (811), first elastic component (84) can drive sliding block (83) to move down And the second cross-drilled hole (831) is made to coincide with the first cross-drilled hole (811), the transmitting plunger (85) is slidably arranged in the second cross-drilled hole (831) in, and the length for transmitting plunger (85) is less than or equal to the length of the second cross-drilled hole (831), second elastic component (86) Transmitting plunger (85) can be driven mobile towards the one end for executing plunger (82) and make the end end face and the second cross-drilled hole (831) end face phase It flushes, transmitting plunger (85) has the first position being disposed entirely in the second cross-drilled hole (831), and transmitting plunger (85) Opposite plunger (82) other end that executes stretches out the second position that the second cross-drilled hole (831) and shell (81) lock；
Electric driving mechanism (9) comprising actuating motor (91), slide plate frame (92), slide plate (93), contact leaf spring (94), it is described Slide plate frame (92) is arranged in the top of auxiliary rocker arm (5), and the slide plate (93) is arranged in parallel and is slidably arranged in rocker arm shaft (1) On slide plate frame (92), the contact leaf spring (94) is mounted on slide plate (93), and is contacted with plunger (82) correspondence is executed, described to hold The output end of row motor (91) is linked with slide plate (93), and slide plate (93) can be pushed to slide along slide plate frame (92).
2. electrodynamic type engine braking apparatus according to claim 1, it is characterised in that: on the longitudinal groove (812) End is equipped with spring groove (813), and longitudinal groove (812) lower end is equipped with the first stop collar (87), and the sliding block (83) is in " convex " Font, lower end, which passes through the first stop collar (87) and limits with the first stop collar (87), to be cooperated, and first elastic component (84) is Spring, and be arranged in spring groove (813), both ends offset with shell (81), sliding block (83) respectively.
3. electrodynamic type engine braking apparatus according to claim 1, it is characterised in that: second cross-drilled hole (831) is Ladder type hole successively includes macropore (8311), mesoporous (8312), aperture (8313), the aperture (8313) and the first cross-drilled hole (811) identical；
The transmitting plunger (85) is adapted with aperture (8313), outer ring be formed be adapted to mesoporous (8312) it is first annular Boss (851) is in " ten " font, is equipped with the second stop collar (88) in the macropore (8311), the with transmitting plunger (85) One annular convex platform (851) limit cooperation, second elastic component (86) is spring, and is set in transmitting plunger (85) outside, two End offsets with sliding block (83), first annular boss (851) respectively.
4. electrodynamic type engine braking apparatus according to claim 1, it is characterised in that: execution plunger (82) outer ring It is formed with the second annular convex platform (821), whole is in " ten " font, and the first cross-drilled hole (811) end is equipped with third stop collar (89), the execution plunger (82) passes through third stop collar (89) and extends to the first cross-drilled hole (811) outside, and passes through the second convex annular Platform (821) and third stop collar (89) limit cooperate.
5. electrodynamic type engine braking apparatus according to claim 1, it is characterised in that: auxiliary rocker arm (5) front end Equipped with longitudinal hole (51), it is formed with longitudinally guiding slot (52) on longitudinal hole (51) side wall, the upper end of the longitudinal hole (51) Equipped with adjustment bolt (53), longitudinal hole (51) lower end is equipped with the 4th stop collar (54)；
The shell (81) is slidably arranged in longitudinal hole (51), and the execution plunger (82) extends across longitudinally guiding slot (52) Outside to auxiliary rocker arm (5), the sliding block (83) passes through the 4th stop collar (54) and extends downward into below longitudinal hole (51)；
It is additionally provided with third elastic component (55) between 4th stop collar (54) and shell (81), third elastic component (55) energy Shell (81) is driven to be kept in contact with adjustment bolt (53).
6. electrodynamic type engine braking apparatus according to claim 5, it is characterised in that: the longitudinally guiding slot (52) sets There are two, and be symmetricly set on longitudinal hole (51) side wall；Shell (81) two sides are set there are two guide ledges (814), whole Body is in " ten " font；The guide ledges (814) are correspondingly arranged in longitudinally guiding slot (52), and first cross-drilled hole (811) It is arranged across two guide ledges (814).
7. electrodynamic type engine braking apparatus according to claim 1, it is characterised in that: the actuating motor (91) is rotation Rotating motor, the output shaft of the actuating motor (91) are equipped with the execution bar (911) of perpendicular setting, on the slide plate (93) Equipped with execution hole (931) compatible with execution bar (911), the execution bar (911), which passes through, executes hole (93).
8. electrodynamic type engine braking apparatus according to claim 1, it is characterised in that: the actuating motor (91) is straight Line motor, the slide plate (93) are equipped with leading truck (97) corresponding with the output end of actuating motor (91)；The slide plate frame (92) return springs (96) are additionally provided between contact leaf spring (94).
CN201910758421.3A 2019-08-16 2019-08-16 Electric engine braking device Active CN110344909B (en)

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PCT/CN2019/103248 WO2021031230A1 (en) 2019-08-16 2019-08-29 Electric engine braking device
EP19908081.3A EP3800332B1 (en) 2019-08-16 2019-08-29 Electric engine braking device

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EP3800332B1 (en) 2022-08-17
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CN110344909B (en) 2024-04-26

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Denomination of invention: An electric engine braking device

Granted publication date: 20240426

Pledgee: Industrial Commercial Bank of China Ltd. Dinghai sub branch Zhoushan

Pledgor: ZHEJIANG LIMING ZHIZAO Co.,Ltd.

Registration number: Y2024330001600