CN109538325A - A kind of integrated engine braking device - Google Patents
A kind of integrated engine braking device Download PDFInfo
- Publication number
- CN109538325A CN109538325A CN201811577858.9A CN201811577858A CN109538325A CN 109538325 A CN109538325 A CN 109538325A CN 201811577858 A CN201811577858 A CN 201811577858A CN 109538325 A CN109538325 A CN 109538325A
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- China
- Prior art keywords
- rocker arm
- oil circuit
- connect
- rocker
- sufficient
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 description 31
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000010721 machine oil Substances 0.000 description 6
- 230000002146 bilateral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a kind of integrated engine braking devices, including rocker arm, biasing spring piece, rocker arm shaft, rocker shaft bed, cam and exhaust gear, the cam is contacted with the rocker arm, the rocker arm and the rocker arm axis connection, the rocker arm shaft is connect with the rocker shaft bed, the rocker arm is also connect with the exhaust gear, it include as sufficient mechanism in the rocker arm, oil circuit one, oil circuit two, triple valve, execute piston, idler wheel and roller pin, the rocker arm shaft is connect with the oil circuit one, the oil circuit one is connect with the triple valve, the triple valve is connect with the oil circuit two, the oil circuit two is connect with the execution piston, the biasing spring piece is fixed on the engine, and it is contacted with the rocker arm.Rocker arm internal structure in the integrated engine braking device is fairly simple not to need blank compensation apparatus, using biasing spring piece and as sufficient mechanism can be realized as the backlash compensation problem generated during braking and being vented main stroke switching, makes features simple structure.
Description
Technical field
The present invention relates to a kind of integrated engine braking devices.
Technical background
The compression-release braking of engine is to open exhaust valve in engine piston compresses end of stroke.Compression-release system
One precedent of dynamic device is disclosed in nineteen sixty-five in U.S. Patent number 3220392 by comings, and braking system passes through hydraulic circuit
Mechanical input is transmitted to open exhaust valve.The main work moved back and forth in master piston bore is typically included on hydraulic circuit
Plug, the reciprocating motion from engine mechanical input, such as the movement of engine injection cam or adjacent exhaust protrusion
Movement.The movement of main piston is transmitted to the auxiliary piston on hydraulic circuit by hydraulic fluid, keeps it reciprocal in slave piston bore
Movement, auxiliary piston directly or indirectly act on exhaust valve, generate the valve motion of engine braking running.
The discouraged type braking of engine is exhaust valve other than normally opening, and keeps a small amount of permanent also in partial periodicity
It opens, or keeps a small amount of perseverances to open within the period of non-exhaust stroke.The discouraged braking of partial periodicity is main with complete period discouraged braking
Difference is that the former does not open exhaust valve in most induction stroke.
The compression-release of engine is braked and the difference of discouraged type braking mainly has two o'clock.First main distinction is system
The open phase of dynamic exhaust valve is different.The complete period braking exhaust valve of discouraged type braking is opened always, therefore is not involved
Opening time.Partial periodicity lose heart type braking braking exhaust valve opening time be engine induction stroke it is later half
Phase；And the opening time of the braking exhaust valve of compression-release braking is in the latter half of the compression stroke of engine, than part
Period lose heart type braking braking exhaust valve opening time want it is late very much.Second main distinction is to brake the unlatching of exhaust valve
Height is different.In general, compression-release engine braking has bigger braking power than the braking of discouraged type, but simultaneously
Bigger brake load is generated, load cell is easily caused and there is deformation, reliability is undesirable, while also increasing engine
Weight.
Summary of the invention
In view of the above disadvantage of the existing technology, the purpose of the present invention is to provide a kind of brakings of integrated engine to fill
It sets, which, which will solve rocker arm in the prior art, will undertake the problems such as pressure is larger, internal structure is complicated.
A kind of integrated engine braking device of the invention, including rocker arm, biasing spring piece, rocker arm shaft, rocker shaft bed,
Cam and exhaust gear, the cam are contacted with the rocker arm, the rocker arm and the rocker arm axis connection, the rocker arm shaft and institute
Rocker shaft bed connection is stated, the rocker arm is also connect with the exhaust gear, and the rocker arm includes as sufficient mechanism, oil circuit one, oil circuit
Two, triple valve, execution piston, idler wheel and roller pin, it is described to be contacted as sufficient mechanism with the exhaust gear, it is described as sufficient mechanism uses
In assisting the integrated engine braking device to complete different work, the rocker arm shaft is connect with the oil circuit one, the oil
The connection of triple valve described in Lu Yiyu, the triple valve are connect with the oil circuit two, and the oil circuit two is connect with the execution piston,
The oil circuit one and the oil circuit two control the execution piston and take exercises for flowing through machine oil, and the triple valve is used
In the flow direction of control machine oil.
Preferably, the rocker arm further includes idler wheel, roller pin and rocker shaft hole, the idler wheel and the idler wheel pin connection,
For the idler wheel for transmitting the cam to the active force of the rocker arm, the roller pin is located at one end of the rocker arm ontology,
For the roller pin for fixing the idler wheel, the rocker shaft hole is located at the middle section of the rocker arm ontology.
Preferably, it is described as sufficient mechanism include as sufficient bolt, as foot pad and as sufficient spring, it is described as foot pad and described as foot
Be bolted, it is described as foot pad is for increasing the contact area as between sufficient bolt and the air valve bridge, reduce it is described as
Pressure between sufficient bolt and the air valve bridge, it is described as sufficient spring pocket it is described as sufficient bolt outside, it is described as sufficient spring is used for
Make it is described restore to the original state as sufficient bolt and after the contact as foot pad, it is described as sufficient bolt can be described as fortune up and down in foot pad
It is dynamic.
It preferably, further include air valve bridge, the air valve bridge is connect with the exhaust gear, and the air valve bridge is for directly pushing away
Exhaust gear exhaust is moved, the air valve bridge, which is equipped with, executes pin hole, and the execution pins position is described in the execution pin hole
Pin hole is executed to be used to provide space for execution pin movement.
Preferably, the cam is equipped with exhaust protrusion, and the exhaust protrusion is for driving the engine to be exhausted
Process, while it being provided with one or two detent bumps, the detent bumps are for driving the engine to carry out braking process.
Preferably, the biasing spring piece leans against on rocker arm on one side, and another side is installed on the engine, the biasing spring
Piece does not increase engine height using biasing spring piece for preventing the non-default bounce of the rocker arm, can make the collection
Accepted way of doing sth engine is integrated in well in engine cylinder body.
Under normal circumstances, there are gaps between execution piston and execution pin, when engine brake, which is braked, to be opened, brake
It is opened for solenoid (not shown), by the oil supply pipe of oil supply mechanism to triple valve fuel feeding, machine oil enters oil circuit one and oil
Road two, at this moment execute piston stretch out, compensate for execute piston and execute pin between gap, and with the execution pin joint on air valve bridge
Touching, and push to execute to sell and be moved downward with unilateral exhaust valve；It is moved in as foot pad as sufficient bolt simultaneously, as sufficient mechanism does not push
Air valve bridge movement, detent bumps molded line just passes through rocker arm and is transmitted to unilateral exhaust valve at this time.When cam turns to exhaust protrusion,
As sufficient mechanism urges air valve bridge moves downward, it is vented raised molded line at this time just passes through rocker arm and be transmitted to bilateral exhaust valve and complete positive work
Exhaust stroke；When engine braking is closed, oil passage to rocker shaft is cut off, and triple valve is opened, and oil is released from triple valve, is executed
Piston retraction.It executes piston and is contacted with pin 2 is executed, rocker arm only transmits the raised molded line of exhaust to bilateral exhaust valve at this time, completes just
The exhaust stroke of function.
In conclusion having the advantages that the integrated form starts the present invention overcomes many disadvantages of the prior art
Brake rocker arm and exhaust rocker arm are integrated in a rocker arm by brake, realize the two different effects of single rocker arm, greatly
The weight in engine is alleviated greatly；Under the premise of not influencing to have started brake operation, the internal junction of engine is simplified
Structure reduces the installation procedure of engine, reduces because engine installs unqualified bring product problem；Bias flat spring collection
At in engine cylinder body, not only without the height of increase engine, the non-default meter bounce for preventing integrated rocker arm is also acted,
Increase the stability and safety of engine operation.
Detailed description of the invention
Fig. 1 is the two dimension view of integrated engine braking device.
Fig. 2 is the cross-sectional view of integrated engine braking device.
Fig. 3 is the oil channel structures schematic diagram of integrated engine braking device.
Fig. 4 is the structural schematic diagram as sufficient mechanism.
Fig. 5 is air valve bridge sectional view, for showing air valve bridge and executing the discrete state of pin.
1, rocker arm；2, biasing spring piece；3, rocker arm shaft；4, rocker shaft bed；5, cam；6, exhaust gear；7, as sufficient mechanism；
8, oil circuit one；9, oil circuit two；10, triple valve；11, piston is executed；14, exhaust valve；15, idler wheel；16, roller pin；17, rocker arm shaft
Hole；18, rocker arm ontology；19, as sufficient bolt；20, as foot pad；21, as sufficient spring；22, air valve bridge；23, pin hole is executed；24, it holds
Marketing；25, exhaust protrusion；26, detent bumps.
Specific embodiment
There is particular specific embodiment to illustrate a specific embodiment of the invention below, the personage for being familiar with this operation all may be used
There is content disclosed by this specification easily to understand other advantages and efficacy of the present invention.
Fig. 1 is please referred to Fig. 5.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 5, a kind of integrated engine braking device of the invention, including rocker arm 1, biasing spring piece
2, rocker arm shaft 3, rocker shaft bed 4, cam 5 and exhaust gear 6, the cam 5 are contacted with the rocker arm 1, the rocker arm 1 with it is described
Rocker arm shaft 3 connects, and the rocker arm shaft 3 is connect with the rocker shaft bed 4, and the rocker arm 1 is also connect with the exhaust gear 6, institute
Rocker arm 1 is stated to include as sufficient mechanism 7, oil circuit 1, oil circuit 29, triple valve 10, execute piston 11, idler wheel 15 and roller pin 16, institute
It states and is contacted as sufficient mechanism 7 with the exhaust gear 6, it is described as sufficient mechanism 7 is for assisting the integrated engine braking device complete
At different work, the rocker arm shaft 3 is connect with the oil circuit 1, and the oil circuit 1 is connect with the triple valve 10, described
Triple valve 10 is connect with the oil circuit 29, and the oil circuit 29 is connect with the execution piston 11, the oil circuit 1 and the oil
Road 29 controls the execution piston 11 and takes exercises for flowing through machine oil, and the triple valve 10 is for controlling machine oil
Flow direction, the exhaust gear 6 further includes exhaust valve 14, and the exhaust valve 14 is used for engine exhaust.
In the present embodiment, the rocker arm 1 further includes rocker arm ontology 18, idler wheel 15, roller pin 16 and rocker shaft hole 17, institute
It states idler wheel 15 to connect with the roller pin 16, the idler wheel 15 is for transmitting the cam 5 to the active force of the rocker arm 1, institute
One end that roller pin 16 is located at the rocker arm ontology 18 is stated, the roller pin 16 is for fixing the idler wheel 15, the rocker arm shaft
Hole 17 is located at the middle section of the rocker arm ontology 18.
In the present embodiment, it is described as sufficient mechanism 7 include as sufficient bolt 19, as foot pad 20 and as sufficient spring 21, it is described as
Foot pad 20 with described as sufficient bolt 19 is connect, it is described described as sufficient bolt 19 and the air valve bridge 22 for increasing as foot pad 20
Between contact area, reduce the pressure as between sufficient bolt 19 and the air valve bridge 22, it is described as 21 sets of sufficient spring exists
It is described as sufficient bolt 19 outside, it is described as sufficient spring 21 for make it is described as sufficient bolt 19 and it is described contacted as foot pad 20 after restore former
Shape, it is described as sufficient bolt 19 can be described as moving up and down in foot pad 20.
It in the present embodiment, further include air valve bridge 22, the air valve bridge 22 is connect with the exhaust gear 6, the valve
Bridge 22 is vented for pushing directly on the exhaust gear 6, and the air valve bridge 22, which is equipped with, to be executed pin 24 and execute pin hole 23, described
It executes pin 24 to be located in the execution pin hole 23, the execution pin hole 23 is used to provide space for the execution pin 24 movement.
In the present embodiment, the cam 5 is equipped with exhaust protrusion 25, and the exhaust protrusion 25 is for driving described start
Process is exhausted in machine, while being provided with one or two detent bumps 26, and the detent bumps 26 are for driving described start
Machine carries out braking process.
In the present embodiment, the biasing spring piece 2 is leaned against on one side on the rocker arm 1, and another side is installed on the engine,
The biasing spring piece 2 does not increase engine using biasing spring piece 2 for preventing the non-default bounce of the rocker arm 1
Highly, the integrated engine can be made to be integrated in engine cylinder body well.
Under normal circumstances, there are gaps between execution piston 11 and execution pin 24, when engine brake, which is braked, to be opened,
Braking is opened for solenoid (not shown), and by the oil supply pipe of oil supply mechanism to 10 fuel feeding of triple valve, machine oil enters oil circuit
One 8 and oil circuit 29, at this moment execute piston 11 and stretch out, compensate for and execute piston 11 and execute the gap between pin 24, and with gas
Execution pin 24 on the raft of pontoons 22 contacts, and execution pin 24 and unilateral exhaust valve 14 is pushed to move downward；Simultaneously as sufficient bolt 19 exists
As moving in foot pad 20, as sufficient mechanism 7 does not push air valve bridge to move, 26 molded line of detent bumps just passes through rocker arm 1 and is transmitted at this time
Unilateral exhaust valve 14.When cam 5 turn to exhaust protrusion 25 when, as sufficient mechanism 7 push air valve bridge 22 move downward, be vented at this time
Raised 25 molded line just pass through rocker arm 1 and are transmitted to the exhaust stroke that bilateral exhaust valve 14 completes positive work；When engine braking is closed,
3 oil circuit of rocker arm shaft is cut off, and triple valve 10 is opened, and oil is released from triple valve 10, is executed piston 11 and is shunk.It executes piston 11 and holds
Marketing 24 does not contact, and 1 transmitting of rocker arm at this time is vented raised 25 molded line to bilateral exhaust valve 14, completes the exhaust stroke of positive work.
As described above, having the advantages that the integrated form starts the present invention overcomes many disadvantages of the prior art
Brake rocker arm and exhaust rocker arm are integrated in a rocker arm by brake, realize the two different effects of single rocker arm, greatly
The weight in engine is alleviated greatly；Under the premise of not influencing to have started brake operation, the internal junction of engine is simplified
Structure reduces the installation procedure of engine, reduces because engine installs unqualified bring product problem；Bias flat spring collection
At in engine cylinder body, not only without the height of increase engine, the non-default meter bounce for preventing integrated rocker arm is also acted,
Increase the stability and safety of engine operation.So there is height the present invention overcomes the various shortcoming of the prior art
Value of industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (6)
1. a kind of integrated engine braking device, it is characterised in that: including rocker arm, biasing spring piece, rocker arm shaft, rocker arm shaft
Seat, cam and exhaust gear, the cam are contacted with the rocker arm, the rocker arm and the rocker arm axis connection, the rocker arm shaft
Connect with the rocker shaft bed, the rocker arm is also connect with the exhaust gear, the rocker arm include as sufficient mechanism, oil circuit one,
Oil circuit two, triple valve, execution piston, idler wheel and roller pin, the rocker arm shaft are connect with the oil circuit one, the oil circuit one and institute
Triple valve connection is stated, the triple valve is connect with the oil circuit two, and the oil circuit two is connect with the execution piston.
2. a kind of integrated engine braking device according to claim 1, it is characterised in that: the rocker arm further includes rocker arm
Ontology, idler wheel, roller pin and rocker shaft hole, the idler wheel and the idler wheel pin connection, the roller pin are located at the rocker arm sheet
One end of body, the rocker shaft hole are located at rocker arm ontology middle position.
3. a kind of integrated engine braking device according to claim 1, it is characterised in that: it is described as sufficient mechanism include as
Sufficient bolt, as foot pad and as sufficient spring, it is described as foot pad with described as foot is bolted, it is described as sufficient spring pocket described as foot
It is described as sufficient bolt can be described as moving up and down in foot pad outside bolt.
4. a kind of integrated engine braking device according to claim 1, it is characterised in that: it further include air valve bridge, it is described
Air valve bridge is connect with the exhaust gear, and the air valve bridge, which is equipped with, executes pin hole, and the execution pins position is in the execution pin hole
It is interior.
5. a kind of integrated engine braking device according to claim 1, it is characterised in that: the cam is equipped with exhaust
Protrusion, while being provided with one or two detent bumps.
6. a kind of integrated engine braking device according to claim 1, it is characterised in that: the biasing spring piece is on one side
It is contacted with the rocker arm, another side is installed on the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577858.9A CN109538325A (en) | 2018-12-20 | 2018-12-20 | A kind of integrated engine braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577858.9A CN109538325A (en) | 2018-12-20 | 2018-12-20 | A kind of integrated engine braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109538325A true CN109538325A (en) | 2019-03-29 |
Family
ID=65856712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577858.9A Pending CN109538325A (en) | 2018-12-20 | 2018-12-20 | A kind of integrated engine braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653765A (en) * | 2022-10-31 | 2023-01-31 | 东风商用车有限公司 | High-power brake control method and system for engine |
| CN118375501A (en) * | 2024-04-30 | 2024-07-23 | 江苏卓联精密机械有限公司 | Engine rocker arm brake device and engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4676203A (en) * | 1984-01-13 | 1987-06-30 | Toyota Jidosha Kabushiki Kaisha | Rocker arm spring for a valve actuating mechanism of an internal combustion engine |
| CN202140128U (en) * | 2011-02-25 | 2012-02-08 | 奚勇 | Integrated air-leakage type engine brake device |
| CN104975898A (en) * | 2015-07-21 | 2015-10-14 | 浙江康和机械科技有限公司 | Integrated rocker arm used for achieving engine braking |
| CN204961000U (en) * | 2012-09-24 | 2016-01-13 | 雅各布斯车辆系统公司 | Integrated dynamic formula rocking arm stopper system of losing with automatic re -setting |
| CN209413958U (en) * | 2018-12-20 | 2019-09-20 | 皆可博(苏州)车辆控制系统有限公司 | A kind of integrated engine braking device |
-
2018
- 2018-12-20 CN CN201811577858.9A patent/CN109538325A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4676203A (en) * | 1984-01-13 | 1987-06-30 | Toyota Jidosha Kabushiki Kaisha | Rocker arm spring for a valve actuating mechanism of an internal combustion engine |
| CN202140128U (en) * | 2011-02-25 | 2012-02-08 | 奚勇 | Integrated air-leakage type engine brake device |
| CN204961000U (en) * | 2012-09-24 | 2016-01-13 | 雅各布斯车辆系统公司 | Integrated dynamic formula rocking arm stopper system of losing with automatic re -setting |
| CN104975898A (en) * | 2015-07-21 | 2015-10-14 | 浙江康和机械科技有限公司 | Integrated rocker arm used for achieving engine braking |
| CN209413958U (en) * | 2018-12-20 | 2019-09-20 | 皆可博(苏州)车辆控制系统有限公司 | A kind of integrated engine braking device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653765A (en) * | 2022-10-31 | 2023-01-31 | 东风商用车有限公司 | High-power brake control method and system for engine |
| CN115653765B (en) * | 2022-10-31 | 2024-07-26 | 东风商用车有限公司 | High-power braking control method and system for engine |
| CN118375501A (en) * | 2024-04-30 | 2024-07-23 | 江苏卓联精密机械有限公司 | Engine rocker arm brake device and engine |
| CN118375501B (en) * | 2024-04-30 | 2024-10-29 | 江苏卓联精密机械有限公司 | Engine rocker arm braking device and engine |
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