CN208380655U - A kind of electromagnetic control type engine braking apparatus - Google Patents
A kind of electromagnetic control type engine braking apparatus Download PDFInfo
- Publication number
- CN208380655U CN208380655U CN201821084375.0U CN201821084375U CN208380655U CN 208380655 U CN208380655 U CN 208380655U CN 201821084375 U CN201821084375 U CN 201821084375U CN 208380655 U CN208380655 U CN 208380655U
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- engine braking
- type engine
- control type
- electromagnetic control
- 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.)
- Withdrawn - After Issue
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000009471 action Effects 0.000 claims abstract description 10
- 235000006040 Prunus persica var persica Nutrition 0.000 claims description 18
- 244000144730 Amygdalus persica Species 0.000 claims description 17
- 239000000314 lubricant Substances 0.000 claims description 7
- 239000010721 machine oil Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 239000010705 motor oil Substances 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical group O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 240000005809 Prunus persica Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
A kind of electromagnetic control type engine braking apparatus.It is characterized by comprising rocker arm shaft, camshaft, exhaust rocker arm, auxiliary rocker arm, air valve bridge, elastic component, sliding pin, electromagnetic drive mechanisms, electromagnetic drive mechanism includes at least a mandril that can be moved up and down, and by electromagnetic controller control action, with the second position for keeping the first position of certain interval with sliding pin and being kept in contact with sliding pin, when in first position, auxiliary rocker arm will not act on first row valve generation, when in the second position, auxiliary rocker arm can open first row valve, realize engine braking or internal EGR.The advantage is that: increasing an auxiliary rocker arm, and setting is by the electromagnetic drive mechanism of electromagnetic controller 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
Technical field
The utility model is applied on medium and heavy diesel oil and natural gas engine, and a kind of electromagnetic control type engine is provided
Brake apparatus.
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 utility model patents at present and be related to the application of technique, it includes volume that major technique, which is outside the main lift of cam,
Outer one or several auxiliary lifts, can also increase a cam dedicated for braking and be started according to the needs of engine operation
Machine braking 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, the utility model disclose a kind of system for driving engine exhaust port, and the system comprises rocker arm shafts, have control
Fluid feed passage and exhaust rocker arm, are pivotably mounted on rocker arm shaft.Brake rocker arm of engine can include center
Opening, the hydraulic path that central opening is connect with control valve, and the fluid that control valve is connect with action piston assembly is led to
Road.Patent CN201080019296.1 is opening in advance for engine braking and exhaust for Jacobs Vehicle Systems Inc.'s application
The lost motion changeable air valve braking system opened, the system may include the first cam, and first cam has compression release convex
It plays part and prerelease door opens convex portion, the prerelease door is opened convex portion and is connected to the first rocker arm
On hydraulic lost motion system.The piston of hydraulic way actuating can selectively extend from the hydraulic lost motion system, with to described
Exhaust valve provides compression release braking or prerelease door opens braking.It is living that the piston of hydraulic way actuating can be used as MS master-slave
It gets back into the relay piston in road to be arranged in fixed shell, be shaken alternatively, being slidably disposed at alternatively as hydraulic piston
In arm；Patent CN200910140026.5 is Man Nutzfahrzeuge AG's application with valve additional control unit
Engine braking apparatus and method for engine braking, the exhaust valve of the brake apparatus include one hydraulic by means of one
The mechanical bindiny mechanism of valve additional control unit is connected with camshaft.Hydraulic valve Auxiliary Control Element is by exhaust valve
It is maintained on the position temporarily opened.Hydraulic valve Auxiliary Control Element can by means of one relative to internal combustion engine main oil return line it is attached
The auxiliary oil return line set is added to be 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.
Utility model content
In order to overcome the shortcomings of background technique, the utility model provides a kind of electromagnetic control type engine braking apparatus.
Technical solution adopted by the utility model: a kind of electromagnetic control type engine braking apparatus, including first exhaust
Door, second row valve, further includes:
Rocker arm shaft；
Camshaft, it is parallel with rocker arm shaft, and there is the first cam and the second cam being adjacently positioned；
Exhaust rocker arm is rotatably installed on rocker arm shaft, and its rear end is corresponding with the first cam；
Auxiliary rocker arm is rotatably installed on rocker arm shaft, and adjoining with exhaust rocker arm, its rear end and the second cam phase
It is corresponding；
Air valve bridge is horizontally set on first row valve and second row valve, and is fixedly connected with exhaust rocker arm front end, can will arrange
Gas rocker arm is pressed onto and the first cam contact；
Auxiliary rocker arm can be pressed onto and the second cam contact by elastic component；
Sliding pin is arranged in air valve bridge, and described sliding pin one end and first row valve contacts, the other end are pierced by air valve bridge；
Electromagnetic drive mechanism, setting is corresponding with sliding pin in auxiliary rocker arm front end, and the electromagnetic drive mechanism includes at least
One mandril that can be moved up and down, and by electromagnetic controller control action, the mandril, which has, keeps certain interval with sliding pin
First position and the second position being kept in contact with sliding pin.
The Electromagnetic Control mechanism further includes push rod, sleeve, spring, spring base；The sleeve is fixedly mounted on auxiliary and shakes
Arm front end, inner wall are equipped with the circumferentially uniformly distributed second sliding slot of N group circumferentially uniformly distributed first sliding groove and N group, the first sliding groove
It is spaced apart with second sliding slot, so that positioning convex platform is formed between the first sliding groove and second sliding slot, the positioning convex platform bottom
Portion forms the first bevel structure, wherein the diameter of the first sliding groove is A, is B between second sliding slot, and A > B, N >=3；
The push rod is mounted in sleeve, and the push rod external circumferential is uniformly arranged 2N the first bar shaped boss, and first bar shaped is convex
Platform is respectively embedded into first sliding groove and second sliding slot, can be moved up and down along first sliding groove and second sliding slot, the push rod lower end surface
It is formed with circumferentially uniformly distributed broached-tooth design；The mandril is mounted in sleeve and is located at push rod lower end, the mandril external circumferential
It is uniformly arranged N number of second bar shaped boss, the diameter of second bar shaped boss is C, and A > C > B, second bar shaped boss
It can be embedded in first sliding groove, form the second bevel structure at the top of second bar shaped boss；The spring base is fixed on sleeve bottom
Portion, the spring are set on mandril, and its both ends is inconsistent with spring base and mandril respectively；The electromagnetic controller is mounted on
It above sleeve, and is in contact with push rod upper surface, it is corresponding with sliding pin that the mandril lower end passes through spring base.
The first sliding groove and second sliding slot are equipped with 4 groups, and first bar shaped boss is equipped with 8, second bar shaped
Boss is equipped with 4.
The sleeve is equipped with card slot close to the position of bottom, is equipped with circlip in the card slot, the spring base is mounted on card
On spring.
The auxiliary rocker arm front end is equipped with threaded hole, and the cartridge exterior is formed with external thread structure, and the sleeve passes through
It is threadedly engaged and is fixedly installed in threaded hole.
It protrudes at the top of the sleeve from the top of threaded hole, is locked by the way that fastening nut is fixed.
Second cam includes basic circle and one or more peach.
The peach includes a braking peach and an EGR peach or BGR peach.
The auxiliary rocker arm rear end is equipped with a protrusion to side；The elastic component uses leaf spring, and one end is fixed to press
On rocker arm shaft, the other end is pressed in protrusion, make auxiliary rocker arm always with the second cam contact.
The protrusion is cylindrical.
It is equipped with oil circuit in the rocker arm shaft, is equipped with the lubricant passage way that can be connected to oil circuit, the lubrication in the auxiliary rocker arm
Oil circuit leads to electromagnetic drive mechanism.
The exhaust rocker arm rear end is equipped with the first idler wheel, first idler wheel and the first cam contact.
The auxiliary rocker arm rear end is equipped with the second idler wheel, second idler wheel and the second cam contact.
The exhaust rocker arm front end is fixedly connected with adjustment bolt, and the adjustment bolt lower end passes through image angle and valve bridging
It connects.
The adjustment bolt upper end is prominent from the top of exhaust rocker arm front end, and is locked by locking nut.
The course of work of above-mentioned electromagnetic control type engine braking apparatus:
When engine work, mandril is in first position under the control of electromagnetic controller, keeps one with sliding pin
Fixed gap does not work to first row valve；
When the work of electromagnetic control type engine braking apparatus, mandril is in second under the control of electromagnetic controller
It sets, is contacted with sliding pin, the movement of auxiliary rocker arm can then open first row valve, realize engine braking or internal EGR；
When electromagnetic control type engine braking apparatus does not work, mandril returns to first under the control of electromagnetic controller
It sets, keeps certain interval with sliding pin, do not work to first row valve.
The beneficial effects of the utility model are: 1, elimination uses machine oil bring security risk: engine braking apparatus
Driven using electromagnetic controller, when eliminating engine start, due to engine oil viscosity is high, engine oil pressure greatly caused by braking function 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 to make
For working media, oil temperature and engine oil pressure there are certain requirements, engine braking is just when such as requiring 40 DEG C of oil temperature >
It can intervene, engine braking is used when just starting which limit vehicle, and use electromagnetic controller driving will not be by these
Condition 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 due to
Use 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 can individually be powered strategy according to current camshaft location using single cylinder using electromagnetic controller, it realizes convex
Wheel shaft revolves the switching of turn around interior completion positive work and negative work, promotes engine braking and enters into and exits from speed；
4, engine braking performance classification more refines: conventional engine brake generally uses two solenoid valve control brakings
The disengaging of machine oil in oil circuit, therefore engine braking performance can be divided into two class, and may be implemented often using electromagnetic controller
The electromagnetic controller of cylinder individually controls, and braking ability can be divided into six ranks for six cylinder engine in this way, in this way can be with
The benefit of subdivision in addition to the adaptability to braking ability is more flexible (for example braking ability demand when vehicle zero load can be smaller),
The speed control of the vehicle and reduction of speed of engine has enormous benefits when automatic transmission gear shift when for automatic cruising；
5, it reduces engine fuel consumption: machine oil is not needed as driving medium, engine machine using electromagnetic controller
Oily 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 structural schematic diagram of the utility model embodiment electromagnetic control type engine braking apparatus.
The section view of electromagnetic control type engine braking apparatus when Fig. 2 is the utility model embodiment engine work
Figure.
The section view of electromagnetic control type engine braking apparatus when Fig. 3 is the utility model embodiment engine braking operation
Figure.
Fig. 4 is the explosive decomposition figure of the utility model embodiment auxiliary rocker arm and Electromagnetic Control mechanism.
Fig. 5 is the cross-sectional view of the utility model embodiment Electromagnetic Control mechanism.
Fig. 6 is the top view of the utility model embodiment sleeve.
Fig. 7 is the cross-sectional view of the utility model embodiment sleeve.
Fig. 8 is the top view of the utility model embodiment push rod.
Fig. 9 is the front view of the utility model embodiment push rod.
Figure 10 is the top view of the utility model embodiment mandril.
Figure 11 is the front view of the utility model embodiment mandril.
In figure, 1- rocker arm shaft, 2- camshaft, the first cam of 21-, the second cam of 22-, 3- exhaust rocker arm, the rolling of 31- first
Wheel, 32- adjustment bolt, 33- image angle, 34- locking nut, 4- auxiliary rocker arm, 41- threaded hole, 42- protrusion, 43- lubricant passage way,
The second idler wheel of 44-, 5- air valve bridge, 6- elastic component, 7- sliding pin, 8- electromagnetic drive mechanism, 81- push rod, the first bar shaped boss of 811-,
812- broached-tooth design, 82- mandril, the second bar shaped boss of 821-, the second bevel structure of 822-, 83- sleeve, 831- first sliding groove,
832- second sliding slot, 833- positioning convex platform, the first bevel structure of 834-, 835- card slot, 84- spring, 85- spring base, 86- card
Spring, 87- fastening nut, 9- electromagnetic controller, 10-, 11- first row valve, 12- second row valve.
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing.
In the description of the present invention, it should be noted that the orientation of the instructions such as term "front", "rear", "upper", "lower"
Or positional relationship is the utility model and simplified description for ease of description and defines, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property.
As shown, a kind of electromagnetic control type engine braking apparatus, including first row valve 11, second row valve 12,
Rocker arm shaft 1, camshaft 2, exhaust rocker arm 3, auxiliary rocker arm 4, air valve bridge 5, elastic component 6, sliding pin 7, electromagnetic drive mechanism 8.
The first row valve 11, second row valve 12 use mushroom valve, for control engine inner combustion chamber and into
The flowing of gas between discharge manifold.
The camshaft 2 is arranged in parallel with rocker arm shaft 1, and the camshaft 2 is equipped with 21 He of the first cam being adjacently positioned
Second cam 22；The exhaust rocker arm 3 is adjoining with auxiliary rocker arm 4 and is rotatably installed on rocker arm shaft 1, and the exhaust is shaken
The rear end of arm 3 is corresponding with the first cam 21, and the rear end of the auxiliary rocker arm 4 is corresponding with the second cam 22.
The air valve bridge 5 is horizontally set on first row valve 11 and second row valve 12, and is fixed and connected with 3 front end of exhaust rocker arm
It connects, exhaust rocker arm 3 can be pressed onto and be contacted with the first cam 21, therefore when the rotation of camshaft 2, the first cam 21 is able to drive exhaust
Rocker arm 3 is along 1 rotary oscillation of rocker arm shaft, to can drive first row valve 11 and second row valve 12 simultaneously by air valve bridge 5
Realize exhaust stroke.
Wherein it is possible to install one first idler wheel 31, first rolling by the first roller shaft in 3 rear end of exhaust rocker arm
Wheel 31 is contacted with the first cam 21, is formed between the first cam 21 and the first idler wheel 31 and is rolled cooperation, it is convex to greatly reduce first
Frictional force between wheel 21 and exhaust rocker arm 3 reduces abrasion, improves service life.
It is connected in addition, can be realized between the air valve bridge 5 and exhaust rocker arm 3 by adjusting bolt 32 and image angle 33, institute
It states adjustment bolt 32 and is mounted on 3 front end of exhaust rocker arm, image angle 33 is fitted in the lower end of adjustment bolt 32 by specific purpose tool, and as
Angle 33 can be freely rotated in certain corner.
Further, 32 upper end of adjustment bolt is prominent from the top of 3 front end of exhaust rocker arm, and passes through locking nut 34
It is locked, connects stronger, reliable.
The elastic component 6 is contacted for being pressed onto auxiliary rocker arm 4 with the second cam 22, therefore when the rotation of camshaft 2, and second
Cam 22 is able to drive auxiliary rocker arm 4 along 1 rotary oscillation of rocker arm shaft.
Likewise, the second idler wheel 44, second rolling can be installed by the second roller shaft in 4 rear end of auxiliary rocker arm
Wheel 44 is contacted with the second cam 22, is formed between the second cam 22 and the second idler wheel 44 and is rolled cooperation, it is convex to greatly reduce second
Frictional force between wheel 22 and auxiliary rocker arm 4 reduces abrasion, improves service life.
In addition, elastic component 6 also has many selectable modes, it can be and be equipped in 4 rear end of auxiliary rocker arm to side
One cylindrical protrusion 42；The elastic component 6 is selected as leaf spring, one end is fixed by rocker arm shaft 1, and the other end is pressed in
In protrusion 42, contact auxiliary rocker arm 4 with the second cam 22 always.It is of course also possible to use the other forms such as spring, torsional spring.
The sliding pin 7 is arranged in air valve bridge 5, and described 7 one end of sliding pin is contacted with first row valve 11, and the other end is pierced by gas
The raft of pontoons 5；The setting of electromagnetic drive mechanism 8 is corresponding with sliding pin 7 in 4 front end of auxiliary rocker arm, and the electromagnetic drive mechanism 8 is at least
Including a mandril that can be moved up and down 82, and by 9 control action of electromagnetic controller, the mandril 82 has to be kept with sliding pin 7
The first position of certain interval and the second position being kept in contact with sliding pin 7.
When engine work, mandril 82 is in first position under the control of electromagnetic controller 9, protects with sliding pin 7
Certain interval is held, is not worked to first row valve 11.
When the work of electromagnetic control type engine braking apparatus, mandril 82 is in second under the control of electromagnetic controller 9
Position is contacted with sliding pin 7, and the movement of auxiliary rocker arm 4 can then open first row valve 11, realizes engine braking or internal EGR.
When electromagnetic control type engine braking apparatus does not work, mandril 82 returns under the control of electromagnetic controller 9
One position keeps certain interval with sliding pin 7, does not work to first row valve 11.
Drive control is realized using electromagnetic controller 9, substitutes and is adopted in existing conventional hydraulic formula or solid chain type engine braking
Use machine oil as working media or drive control medium, when eliminating engine start, since engine oil viscosity is high, engine oil pressure draws greatly
The braking function risen, which opens by mistake, to be opened and bring unstable idle speed and emits white cigarette problem, more securely and reliably, and not by oil temperature
And the conditions such as engine oil pressure require limitation, can use any time after vehicle starting, using area range is wider, starts mechanism
It is dynamic to enter into and exit from the time and be also obviously shortened, moreover it is possible to reduce engine fuel consumption.
Wherein, second cam 22 includes basic circle 221 and one or two peaches 222.Such as two peach packets
A braking peach is included, an EGR peach or a BGR peach driving auxiliary rocker arm 4 realize auxiliary valve motion, brake peach
Son provides a braking lift, and optional EGR peach can provide an EGR lift, optional BGR peach when engine makees positive work
Son can provide a BGR lift in engine braking.
As shown, the Electromagnetic Control mechanism 8 further includes push rod 81, sleeve 83, spring 84, spring base 85.
The sleeve 83 is fixedly mounted on the front end of auxiliary rocker arm 4, and inner wall is equipped with 4 groups of circumferentially uniformly distributed first sliding grooves
831 and 4 groups of circumferentially uniformly distributed second sliding slots 832, the first sliding groove 831 are spaced apart with second sliding slot 832, sliding first
The structure of positioning convex platform 833 is formed between slot 831 and second sliding slot 832, the first inclined-plane knot is formed on 833 bottom of positioning convex platform
Structure 834, wherein the diameter of the first sliding groove 831 is A, is B between second sliding slot 832, and A > B.
Certainly, the quantity of the first sliding groove 831 and second sliding slot 832 is not limited to 4 groups, is also possible to 3 groups or 5 groups
Differ.
In addition, 4 front end of auxiliary rocker arm is equipped with threaded hole 41, the sleeve 83 is externally formed with external thread structure, institute
It states sleeve 83 to be fixedly installed in threaded hole 41 by being threadedly engaged, by being threadedly engaged, very convenient, Er Qiean is not only installed
Dress is secured.
Further, 83 top of sleeve is protruded from the top of threaded hole 41, is realized further by fastening nut 87
Fixed locking, connect stronger, reliable.
The push rod 81 is mounted in sleeve 83, and 81 external circumferential of push rod is uniformly arranged 8 the first bar shaped boss
811, first bar shaped boss 811 is respectively embedded into first sliding groove 831 and second sliding slot 832, can be along first sliding groove 831 and the
Two sliding slots 832 move up and down, and 81 lower end surface of push rod is formed with circumferentially uniformly distributed broached-tooth design 812.
Certainly, the quantity of first bar shaped boss 811 is also not limited to 8, and quantity is first sliding groove 831 and second
The summation of sliding slot 832.
The mandril 82 is mounted in sleeve 83 and is located at 81 lower end of push rod, and 82 external circumferential of mandril is uniformly arranged 4
A second bar shaped boss 821, the diameter of second bar shaped boss 821 are C, and A > C > B, second bar shaped boss 821
It can be embedded in first sliding groove 831, and cannot be embedded in the second sliding slot 832, be formed at the top of second bar shaped boss 821
Second bevel structure 822, second bevel structure 822 can be matched with broached-tooth design 812, the first bevel structure 834.
Likewise, the quantity of second bar shaped boss 821 is also not limited to 4, quantity and first sliding groove 831 and the
Two sliding slots 832 are corresponding.
The sleeve 83 is equipped with card slot 835 close to the position of bottom, is equipped with circlip 86, the spring in the card slot 835
Seat 85 is mounted on circlip 86, and the spring 84 is set on mandril 82, and its both ends respectively with 82 phase of spring base 85 and mandril
It contradicts, mandril 82 can be driven to move up.
The electromagnetic controller 9 is mounted on 83 top of sleeve, and is in contact with 81 upper surface of push rod, 82 lower end of mandril
It is corresponding with sliding pin 7 across spring base 85.
When engine work, electromagnetic controller 9 is closed, and the second bar shaped boss 821 of mandril 82 is just embedded in
In first sliding groove 831, while under the action of spring 84, it is maintained at highest position, so that mandril 82 keeps certain with sliding pin 7
The movement in gap, auxiliary rocker arm 4 will not act on 11 generation of first row valve.
When the work of electromagnetic control type engine braking apparatus, electromagnetic controller 9 is opened, and is executed plunger downlink, is held
Row plunger will push push rod 81 and move down, and push rod 81 then will push mandril 82 and move down, until the second bar shaped boss 821 is de-
From first sliding groove 831, at this point, being generated between the second bevel structure 822 on the broached-tooth design 812 and mandril 82 of 81 bottom of push rod
Interaction force make mandril 82 turn over certain angle, then electromagnetic controller 9 close, execute plunger move up resets, top
Bar 82 then moves up under the action of spring 84, at this point, first of the second bevel structure 822 and sleeve 83 on mandril 82 is oblique
The interaction force generated between face structure 834 makes mandril 82 turn over certain angle again and move up slightly, so that the second bar shaped
Boss 821 is corresponding with second sliding slot 832, since the second bar shaped boss 821 can not be embedded in second sliding slot 832, so that mandril
82 can not continue to move up, to be maintained at lower position, so that mandril 82 and reach lock position, 82 lower end of mandril can be with
Sliding pin 7 contacts, and the movement of auxiliary rocker arm 4 can then open first row valve 11, realizes engine braking or internal EGR.
When electromagnetic control type engine braking apparatus does not work, electromagnetic controller 9 is opened, and executes plunger downlink,
Execution plunger will push push rod 81 and move down, and push rod 81 then will push mandril 82 and move down, the second inclined-plane on mandril 82
Structure 822 is separated with the first bevel structure 834 of sleeve 83, while on the broached-tooth design 812 of 81 bottom of push rod and mandril 82
The interaction force generated between second bevel structure 822 makes mandril 82 be again rotated through certain angle, then electromagnetic controller 9
It closes, executes plunger and move up reset, mandril 82 then moves up under the action of spring 84, at this point, second on mandril 82
The interaction force generated between bevel structure 822 and the first bevel structure 834 of sleeve 83 turns over mandril 82 again centainly
Angle, so that the second bar shaped boss 821 is corresponding with first sliding groove 831, then continue to move up under the action of spring 84, the
Two bar shaped boss 821 are embedded in first sliding groove 831, are maintained at highest position, so that mandril 82 and sliding pin 7 keep certain interval,
The movement of auxiliary rocker arm 4 will not act on 11 generation of first row valve.
By an electromagnetic controller 9, individually one Electromagnetic Control mechanism 8 of control driving works, in this way for six cylinder engine
Braking ability can be divided into six ranks, the benefit that can be segmented in this way is in addition to the adaptability to braking ability is more flexible
(for example braking ability demand when vehicle zero load can be smaller), the speed control and fluid drive of vehicle when for automatic cruising
The reduction of speed of engine has enormous benefits when case is shifted gears.
Meanwhile Electromagnetic Control mechanism 8 passes through the structures such as push rod 81, mandril 82, sleeve 83, spring 84, spring base 85, so that
Mandril 82 itself has the lockup state being kept in contact with sliding pin 7 and keeps the not lockup state of spacing with sliding pin 7, therefore,
The power of 82 location status of switching mandril only need to be provided after opening electromagnetic controller 9 every time, when the position of mandril 82
After state completes switching, electromagnetic controller 9 can be closed and be resetted, and not only be worked more stable, but also protect electromagnetic controller
9, service life is provided.
Certainly, Electromagnetic Control mechanism 8 can also directly be protected by the driving force of electromagnetic controller 9 only with the form of mandril
It holds and the contact of sliding pin 7 or separates.
In addition, as Figure 2-3, oil circuit 10 is equipped in the rocker arm shaft 1, oil can be connected to by being equipped in the auxiliary rocker arm 4
The lubricant passage way 43 on road 10, the lubricant passage way 43 lead to threaded hole 42, and machine oil shakes by the oil circuit 10 and auxiliary of rocker arm shaft 1
The lubricant passage way 43 of arm 4 enters in Electromagnetic Control mechanism 8, provides lubricating oil for each components in Electromagnetic Control mechanism 8.
Embodiment is not construed as the limitation to utility model, but any spiritual improvements introduced based on the utility model,
It should all be within the protection scope of the utility model.
Claims (15)
1. a kind of electromagnetic control type engine braking apparatus, including first row valve (11), second row valve (12), feature exists
In: further include
Rocker arm shaft (1)；
Camshaft (2), it is parallel with rocker arm shaft (1), and there is the first cam (21) and the second cam (22) being adjacently positioned；
Exhaust rocker arm (3), is rotatably installed on rocker arm shaft, and its rear end is corresponding with the first cam (21)；
Auxiliary rocker arm (4), is rotatably installed on rocker arm shaft, and adjoining with exhaust rocker arm, its rear end and the second cam
(22) corresponding；
Air valve bridge (5) is horizontally set on first row valve (11) and second row valve (12), and fixes with exhaust rocker arm (3) front end
Exhaust rocker arm (3), can be pressed onto and contact with the first cam (21) by connection；
Auxiliary rocker arm (4) can be pressed onto and contact with the second cam (22) by elastic component (6)；
Sliding pin (7), setting is in air valve bridge (5), and described sliding pin (7) one end is contacted with first row valve (11), and the other end is pierced by
Air valve bridge (5)；
, the electromagnetic drive mechanism (8) corresponding with sliding pin (7) in auxiliary rocker arm (4) front end is arranged in electromagnetic drive mechanism (8)
Including at least a mandril that can be moved up and down (82), and by electromagnetic controller (9) control action, the mandril (82) have with
The second position that sliding pin (7) keeps the first position of certain interval and is kept in contact with sliding pin (7).
2. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: the Electromagnetic Control mechanism
It (8) further include push rod (81), sleeve (83), spring (84), spring base (85)；
The sleeve (83) is fixedly mounted on auxiliary rocker arm (4) front end, and inner wall is equipped with the circumferentially uniformly distributed first sliding groove of N group
(831) and the circumferentially uniformly distributed second sliding slot (832) of N group, the first sliding groove (831) are spaced apart with second sliding slot (832),
So that positioning convex platform (833) are formed between the first sliding groove (831) and second sliding slot (832), positioning convex platform (833) bottom
Portion forms the first bevel structure (834), wherein the diameter of the first sliding groove (831) is A, and second sliding slot is between (832)
B, and A > B, N >=3；
The push rod (81) is mounted in sleeve (83), and push rod (81) external circumferential is uniformly arranged 2N the first bar shaped boss
(811), first bar shaped boss (811) is respectively embedded into first sliding groove (831) and second sliding slot (832), can be sliding along first
Slot (831) and second sliding slot (832) move up and down, and push rod (81) lower end surface is formed with circumferentially uniformly distributed broached-tooth design
(812)；
The mandril (82) is mounted in sleeve (83) and is located at push rod (81) lower end, and mandril (82) external circumferential is uniformly set
Set N number of second bar shaped boss (821), the diameter of second bar shaped boss (821) is C, and A > C > B, second bar shaped
Boss (821) can be embedded in first sliding groove (831), and the second bevel structure is formed at the top of second bar shaped boss (821)
(822)；
The spring base (85) is fixed on sleeve (83) bottom, and the spring (84) is set on mandril (82), and its both ends point
It is not inconsistent with spring base (85) and mandril (82)；
The electromagnetic controller (9) is mounted on above sleeve (83), and is in contact with push rod (81) upper surface, the mandril (82)
It is corresponding with sliding pin (7) that lower end passes through spring base (85).
3. electromagnetic control type engine braking apparatus according to claim 2, it is characterised in that: the first sliding groove
(831) 4 groups are equipped with second sliding slot (832), first bar shaped boss (811) is equipped with 8, second bar shaped boss
(821) 4 are equipped with.
4. electromagnetic control type engine braking apparatus according to claim 2, it is characterised in that: the sleeve (83) is close
The position of bottom is equipped with card slot (835), is equipped with circlip (86) in the card slot (835), and the spring base (85) is mounted on circlip
(86) on.
5. electromagnetic control type engine braking apparatus according to claim 2, it is characterised in that: the auxiliary rocker arm (4)
Front end is equipped with threaded hole (41), and the sleeve (83) is externally formed with external thread structure, and the sleeve (83) is by being threadedly engaged
It is fixedly installed in threaded hole (41).
6. electromagnetic control type engine braking apparatus according to claim 5, it is characterised in that: at the top of the sleeve (83)
It protrudes from the top of threaded hole (41), is locked by the way that fastening nut (87) are fixed.
7. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: second cam (22)
Including basic circle (221) and one or more peach (222).
8. electromagnetic control type engine braking apparatus according to claim 7, it is characterised in that: peach (222) packet
Include a braking peach and an EGR peach or BGR peach.
9. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: the auxiliary rocker arm (4)
Rear end is equipped with a protrusion (42) to side；The elastic component (6) uses leaf spring, and one end is fixed to press on rocker arm shaft (1), separately
One end is pressed on raised (42), contacts auxiliary rocker arm (4) with the second cam (22) always.
10. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: raised (42) are in
It is cylindrical.
11. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: in the rocker arm shaft (1)
Equipped with oil circuit (10), the lubricant passage way (43) that can be connected to oil circuit (10), the lubricant passage way are equipped in the auxiliary rocker arm (4)
(43) lead to electromagnetic drive mechanism (8).
12. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: the exhaust rocker arm (3)
Rear end is equipped with the first idler wheel (31), and first idler wheel (31) contacts with the first cam (21).
13. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: the auxiliary rocker arm (4)
Rear end is equipped with the second idler wheel (44), and second idler wheel (44) contacts with the second cam (22).
14. electromagnetic control type engine braking apparatus according to claim 1, it is characterised in that: the exhaust rocker arm (3)
Front end is fixedly connected with adjustment bolt (32), and adjustment bolt (32) lower end is connect by image angle (33) with air valve bridge (5).
15. electromagnetic control type engine braking apparatus according to claim 14, it is characterised in that: the adjustment bolt
(32) upper end is prominent from the top of exhaust rocker arm (3) front end, and is locked by locking nut (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084375.0U CN208380655U (en) | 2018-07-10 | 2018-07-10 | A kind of electromagnetic control type engine braking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084375.0U CN208380655U (en) | 2018-07-10 | 2018-07-10 | A kind of electromagnetic control type engine braking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380655U true CN208380655U (en) | 2019-01-15 |
Family
ID=64963531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821084375.0U Withdrawn - After Issue CN208380655U (en) | 2018-07-10 | 2018-07-10 | A kind of electromagnetic control type engine braking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380655U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661745A (en) * | 2018-07-10 | 2018-10-16 | 浙江黎明发动机零部件有限公司 | A kind of electromagnetic control type engine braking apparatus |
| CN110374713A (en) * | 2019-08-16 | 2019-10-25 | 浙江黎明智造股份有限公司 | A kind of engine braking apparatus |
| CN110566314A (en) * | 2019-10-19 | 2019-12-13 | 潍坊力创电子科技有限公司 | Electromagnet driven brake device in engine cylinder |
| WO2023019616A1 (en) * | 2021-08-17 | 2023-02-23 | 浙江黎明智造股份有限公司 | Energy-saving and consumption-reducing engine braking device |
-
2018
- 2018-07-10 CN CN201821084375.0U patent/CN208380655U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661745A (en) * | 2018-07-10 | 2018-10-16 | 浙江黎明发动机零部件有限公司 | A kind of electromagnetic control type engine braking apparatus |
| CN108661745B (en) * | 2018-07-10 | 2023-11-21 | 浙江黎明智造股份有限公司 | Electromagnetic control type engine braking device |
| CN110374713A (en) * | 2019-08-16 | 2019-10-25 | 浙江黎明智造股份有限公司 | A kind of engine braking apparatus |
| CN110374713B (en) * | 2019-08-16 | 2024-04-19 | 浙江黎明智造股份有限公司 | Engine braking device |
| CN110566314A (en) * | 2019-10-19 | 2019-12-13 | 潍坊力创电子科技有限公司 | Electromagnet driven brake device in engine cylinder |
| WO2023019616A1 (en) * | 2021-08-17 | 2023-02-23 | 浙江黎明智造股份有限公司 | Energy-saving and consumption-reducing engine braking device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108661745A (en) | A kind of electromagnetic control type engine braking apparatus | |
| CN208380655U (en) | A kind of electromagnetic control type engine braking apparatus | |
| CN109372608A (en) | A kind of electromagnetic control type engine braking apparatus | |
| EP0034681B1 (en) | Engine braking apparatus | |
| US7036465B2 (en) | Two-stroke and four-stroke switching mechanism | |
| US20100170472A1 (en) | Integrated engine brake with mechanical linkage | |
| CN101571075B (en) | General multi-operating mode energy-saving system | |
| CN101490370B (en) | System and method for hydraulic valve actuation | |
| KR20150014429A (en) | Electrohydraulic valve actuator having an alternating cam | |
| JP2010127074A (en) | Vehicle control device | |
| CN110425016A (en) | A kind of engine braking apparatus | |
| CN209163890U (en) | A kind of electromagnetic control type engine braking apparatus | |
| CN208831060U (en) | A kind of electromagnetic control type engine braking apparatus | |
| CN204851355U (en) | A integrated form rocking arm for producing engine brake | |
| CN210317428U (en) | Engine braking device | |
| CN100572776C (en) | A kind of method of automobile energy-conserving | |
| CN1312388C (en) | Arm swinging for combuston engine of changable valve stopping and output volume | |
| CN210622882U (en) | Electric control type engine braking device | |
| EP4074945B1 (en) | System for actuation of an intake valve of an internal combustion engine | |
| CN110529216A (en) | A kind of electric-controlled type engine braking apparatus | |
| CN210396841U (en) | Hydraulic control type engine braking device | |
| KR101610137B1 (en) | CDA device | |
| CN110425015B (en) | Hydraulic control type engine braking device | |
| CN210289866U (en) | Electric engine braking device | |
| CN204283544U (en) | A kind of continuous variable valve stroke mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 316000 Honglu Avenue, Xingang Park, Zhoushan High-tech Industrial Park, Zhejiang Province Patentee after: ZHEJIANG LIMING ZHIZAO Co.,Ltd. Address before: 316000 No. 456 Hongsheng Avenue, Zhoushan City, Zhejiang Province Patentee before: ZHEJIANG LIMING ENGINE PARTS CO.,LTD. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190115 Effective date of abandoning: 20231121 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190115 Effective date of abandoning: 20231121 |