CN106930798A - Drive timing oil control method and the mechanism of engine brake - Google Patents
Drive timing oil control method and the mechanism of engine brake Download PDFInfo
- Publication number
- CN106930798A CN106930798A CN201710166614.0A CN201710166614A CN106930798A CN 106930798 A CN106930798 A CN 106930798A CN 201710166614 A CN201710166614 A CN 201710166614A CN 106930798 A CN106930798 A CN 106930798A
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- Prior art keywords
- timing
- rocking arm
- oil
- engine brake
- valve
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
A kind of timing oil control method of driving engine brake, including a supply time or the timing oil-control process of emptying time using timing oil-control mechanism control engine brake, timing oil-control mechanism includes timing oil circuit and timing valve system, with timing valve system be connected the braking delivery valve of engine brake by timing oil circuit, timing valve system controls engine brake oil-filled or emptying time or phase, timing oil-control process comprises the steps, first, connect braking delivery valve, secondly, one section of scheduled time or phase in engine cycle connect timing valve system, finally, engine brake is oil-filled or emptying.The present invention provides timing fuel feeding or emptying for engine brake, eliminates the randomness that conventional engine brake device is turned on and off, and increased arrestment mechanism and engine reliability and durability in itself.
Description
Technical field:
It is particularly a kind of to drive engine brake the present invention relates to mechanical field, more particularly to engine braking technology
Timing oil control method and mechanism.
Background technology:
The applicant drapes over one's shoulders in the application for a patent for invention on October 15 in 2014 (authorizing the B of publication No. CN 104314633)
A kind of group of engine variable-valve drive mechanism of roller is revealed.Roller driving mechanism is by roller shift fork by cam roller in rolling
Changed between first axial location and second axial location on wheel shaft, cam roller is connected from different cams, produced
The different engine valve event of life.Roller driving mechanism includes piston and spring, and piston is connected with one end of roller shift fork, rolls
The other end for taking turns shift fork is provided with two separate pilot holes, and two separate pilot holes are enclosed within roller shaft and by cam roller
It is clipped in the middle, the motion of piston passes to cam roller by roller shift fork.This group of engine variable-valve of roller drives
Mechanism can be used for engine close cylinder, engine braking, engine discard recycling and engine startup with close etc..
Afterwards, the applicant is at the application for a patent for invention on March 25 in 2016 (A of application publication number CN 105715323)
In disclose it is a kind of by roller driving mechanism be placed in roller shaft dial idler wheel mechanism.Because roller driving mechanism is not in rocking arm
In (roller axle box), the oil supply mechanism of roller driving mechanism just has more spaces, increases in rocking arm (roller axle box)
Add commutation valve system and store oil machine structure.The lubricating oil of the reversing piston control engine of commutation valve system enters or draws off roller
Drive mechanism, and reversing piston motion in itself is the brake oil control of origin self-retention delivery valve.That is, reversal valve is
Controlled by brake oil, but roller (before having reversal valve, is rolled by what the lubricating oil from oil pump for engine directly drove
Wheel is that the brake oil of origin self-retention delivery valve drives).
Although the invention of the A of application publication number CN 105715323 is accelerated using the lubricating oil direct drive roller of engine
The actuating speed of roller, reduces roller and is transformed into the transit time of another cam from a cam, but do not solve still
The problem that certainly roller is slipped.(braking fuel feeding when due to the braking fuel feeding (and emptying) from braking delivery valve being random, anon-normal
The unlatching of valve is random, and oil can lead to roller driving mechanism in any position of cam), roller is on roller shaft from one
When axial location moves to another axial location, it is possible to can produce across two highly different cam (cams
In a high position, another cam be in low level, rather than two cams be in sustained height) transient condition, produce roller from
Slippage from high-order cam to low level cam and impact.
The content of the invention：
It is an object of the invention to provide the timing fuel feeding side that one kind drives engine brake (including dialling idler wheel mechanism)
Method and mechanism, described timing oil supply mechanism and method will be solved in the prior art due to roller driving mechanism fuel feeding or emptying
The technical problem that roller is slipped and impacted from high-order cam to low level cam caused by randomness.
The timing oil control method of driving engine brake of the invention, an including use timing oil-control mechanism controls hair
The supply time of motivation brake or the timing oil-control process of emptying time, described engine brake include system during anon-normal
Dynamic delivery valve, described timing oil-control mechanism includes timing oil circuit and timing valve system, and described timing oil circuit will brake fuel feeding
Valve is connected with timing valve system, and described timing valve system controls engine brake oil-filled or emptying time or phase, its
It is characterised by：Described timing oil-control process comprises the steps, first, connects and brake delivery valve, secondly, in engine cycle
One section of interior scheduled time or phase connect timing valve system, and finally, engine brake is oil-filled or emptying.
Further, described engine includes cam and rocking arm, and timing oil circuit and timing valve system are mounted with rocking arm,
Described timing valve system includes reversal valve, timing piston and timing piston stop mechanism, when cam is in interior base circle position,
Timing piston in rocking arm is positioned at a precalculated position by timing piston stop mechanism, and in described precalculated position, timing is lived
Plug closes the timing oil circuit towards reversal valve；When actuated by cams rocker arms roll, timing piston is performed relative motion in rocking arm, institute
Relative motion of the timing piston in rocking arm is stated more than after a preset distance, the timing oil circuit towards reversal valve is opened, sent out
Motivation brake is oil-filled or emptying.
Further, described engine includes cam, rocker arm shaft and the first rocking arm being disposed side by side on above rocker arm shaft
With the second rocking arm, described timing oil circuit and timing valve system be arranged in the first rocking arm and the second rocking arm, described timing valve
System includes reversal valve, and described reversal valve and engine brake is all disposed within the first rocking arm, when cam is in interior basic circle
During position, the timing oil circuit in the timing oil circuit and the first rocking arm in the second rocking arm disconnects, and reversal valve is in the first rocking arm
The state of geo-stationary；When actuated by cams rocker arms roll, the timing oil in the timing oil circuit and the first rocking arm in the second rocking arm
Road is close to each other, after the relative pan of two rocking arms is more than a predetermined angular, the timing oil circuit and first in the second rocking arm
Timing oil circuit in rocking arm is connected, and opens the timing oil circuit towards reversal valve, and engine brake is oil-filled or emptying.
The timing oil-control mechanism of driving engine brake of the invention, including timing oil circuit and timing valve system, it is described
Timing oil circuit be connected delivery valve is braked with timing valve system, described timing valve system control engine brake it is oil-filled or
The time of emptying or phase, it is characterised in that：Described timing valve system includes reversal valve, and described reversal valve is located at engine
A rocking arm in, when the cam of engine is in interior base circle position, described timing oil circuit breaks with the reversal valve in rocking arm
Open；After actuated by cams rocker arms roll a to predetermined angular, timing oil circuit is connected with the reversal valve in rocking arm, starts mechanism
Dynamic device is oil-filled or emptying.
Further, described timing valve system also includes timing piston and timing piston stop mechanism, described timing
Piston and reversal valve are located in same rocking arm, and when cam is in interior base circle position, timing piston is by timing piston stop bit machine
Structure is positioned at a precalculated position in rocking arm, and in described precalculated position, timing piston closes the timing oil towards reversal valve
Road；After actuated by cams rocker arms roll a to predetermined angular, relative motion of the timing piston in rocking arm is opened to lead to and changed
To the timing oil circuit of valve, engine brake is oil-filled or emptying.
Operation principle of the invention is：When braking delivery valve opens fuel feeding or closes emptying, engine brake is not
Necessarily open or close immediately, but a scheduled time or phase (such as the rocking arm of engine in engine cycle
Shake is in a predetermined angular range) when, the timing valve system of timing oil-control mechanism is open-minded, to engine brake fuel feeding, makes
Engine brake timing (in the scheduled time or phase) is obtained to open.
The present invention is compared with prior art, and its effect is positive and obvious.Such as, the present invention passes through timing oil-control machine
Structure fuel feeding drives axial location of the timing shifting roller on roller shaft so that roller moves to another from a cam position
The transition period of cam position does not have slippage and impacts, and increased reliability, stability and the durability for dialling idler wheel mechanism.
Brief description of the drawings：
Fig. 1 is timing valve system in the timing oil control method of driving engine brake of the invention and the embodiment 1 of mechanism
The schematic diagram that system is off.
Fig. 2 is timing valve system in the timing oil control method of driving engine brake of the invention and the embodiment 1 of mechanism
System schematic diagram in an ON state.
Fig. 3 is the schematic diagram of the embodiment 2 of the timing oil control method and mechanism of driving engine brake of the invention.
Fig. 4 is two timings in the timing oil control method of driving engine brake of the invention and the embodiment 2 of mechanism
The schematic diagram of oil duct interface relationship.
Specific embodiment：
Embodiment 1：
Fig. 1 and Fig. 2 is used for describing the timing oil control method of driving engine brake of the invention and the embodiment of mechanism
1.The timing valve system 600 of timing oil-control mechanism is integrated in the rocking arm of engine (exhaust rocker arm or intake rocker) 210, and it is wrapped
Include timing piston 672, timing piston stop mechanism 700 and reversing piston 660.When the cam of engine is in interior base circle position
When, rocking arm 210 remains static.Timing piston 672 in rocking arm is by fixing timing piston stop mechanism on the engine
700 (by adjusting screw 701 and locking nuts 705) are positioned at precalculated position as described in Figure 1.
When engine braking is desired, delivery valve 50 (delivery valve conventional, without timing function, the switch of valve are braked
It is random) opening, by timing oil duct 213 to the fuel feeding of timing piston 672.But now timing piston 672 is due to timing piston
The stop bit of stop mechanism 700 and remain stationary as so that the timing oil circuit 214 towards reversal valve 660 is remained turned-off, reversal valve 660
The bottom of piston hole 690 is pressed against by spring 656, the oil supply gallery 113 of access to engine brake 100 is closed.Work as engine
Actuated by cams rocking arm 210 shake when, rocking arm 210 and timing piston 672 are separated with timing piston stop mechanism 700, timing work
The oil pressure that plug 672 is carried out self-retention delivery valve 50 in timing oil duct 213 in rocking arm compels motion upwards.When timing piston 672 exists
When relative motion in rocking arm is more than a preset distance, the timing oil circuit 214 towards reversal valve 660 is opened (Fig. 2).Oil pressure
Overcome the active force of spring 656, reversal valve 660 be moved to the left, the annular groove 662 above reversal valve aligns with oil supply gallery 113,
Machine oil from oil pump for engine 10 flows to engine brake 100, opens engine brake 100.
When engine braking is not needed, braking delivery valve 50 (open by delivery valve conventional, without timing function, valve
Pass is random) closing, in Fig. 2 commutate valve opening 690 in oil by timing oil duct 214 and 213 to braking delivery valve 50 draw off.
Reversal valve 660 loses the effect of oil pressure, is moved to bottom hole (the right) in the presence of spring 656, closes access to engine braking
The oil supply gallery 113 of device 100, while opening the emptying passage 114 (Fig. 1) of engine brake 100, engine brake 100
Closed after emptying.
Embodiment 2：
Fig. 3 and Fig. 4 is used for describing the timing oil control method of driving engine brake of the invention and the embodiment of mechanism
2.The present embodiment is that timing valve system 600 is arranged in two rocking arms of engine with the main distinction of above-described embodiment 1, and
There is no timing piston and timing piston stop mechanism.The side 226 of the rocking arm 220 of side 225 and second of the first rocking arm 210 is tight
The sealing surface (the first rocking arm and the second rocking arm can also be separate, but intermediate demand increases transition piece, transmit machine oil) of patch.When
When the cam of engine is in interior base circle position, rocking arm remains static.Timing oil circuit 213 in second rocking arm 220 is in side
The outlet 216 of timing oil circuit 214 in outlet 215 on face 226 and the first rocking arm 210 on side 225 is to stagger or disconnect
(in Fig. 4 dashed circle be outlet 215 projection on side 225).
When engine braking is desired, delivery valve 50 (delivery valve conventional, without timing function, the switch of valve are braked
It is random) opening, by the oil duct 211 in rocker arm shaft 205 to the fuel feeding of timing oil duct 213 in the second rocking arm 220.But now
The outlet 216 of the timing oil circuit 214 in the rocking arm 210 of outlet 215 and first of the timing oil circuit 213 in the second rocking arm 220 is wrong
(Fig. 4) for opening, the timing oil circuit 214 towards reversal valve 660 is remained turned-off, and reversal valve 660 is pressed against piston hole by spring 656
690 bottom, the oil supply gallery 113 of engine brake 100 is closed, and the emptying passage 114 of engine brake 100 is opened
(Fig. 3), engine brake 100 cannot be opened.Only when the actuated by cams rocker arms roll of engine, such as, second shakes
(Fig. 4), the timing oil circuit in the second rocking arm 220 when arm 220 rotates clockwise a predetermined angle with respect to the first rocking arm 210
213 outlet 215 will intersect and overlap with the outlet 216 of the timing oil circuit 214 in the first rocking arm 210, timing oil circuit 213 with
214 connect, and be moved to the left for reversal valve 660 by the active force of oil pressure counter spring 656, annular groove 662 and fuel feeding above reversal valve
Passage 113 aligns, and the machine oil from oil pump for engine 10 flows to engine brake 100, at the same time, engine brake
100 emptying passage 114 is closed, and engine brake 100 starts.
When engine braking is not needed, braking delivery valve 50 (open by delivery valve conventional, without timing function, valve
Pass is random) closing emptying, but only when the rocking arm 210 of outlet 215 and first of the timing oil circuit 213 in the second rocking arm 220
When the outlet 216 of interior timing oil circuit 214 will intersect or overlap, timing oil circuit 213 and 214 is connected, commutation valve opening 660 is driven
Oil could from the oil duct 211 in timing oil duct 214 and 213 and rocking arm 205 to braking delivery valve 50 draw off.Now reversal valve
660 effects for losing oil pressure, move in the presence of spring 656 to the bottom (the right) in hole 690, close access to engine braking
The oil supply gallery 113 of device 100, while opening the emptying passage 114 (Fig. 3) of engine brake 100, engine brake 100
Closed after emptying.
Generally speaking, after having a timing oil-control mechanism of the invention, engine brake 100 is turned on and off not
It is certain to occur when braking delivery valve 50 and being turned on and off, but by the timing valve system of timing oil-control mechanism open when
Between or phase determine.
Described above contains different specific embodiments, and this should not be construed so as to limit the scope of the present, and
It is that used as representing some specific illustrations of the invention, many other differentiation are likely to therefrom produce.For example, show here
Driving engine brake timing oil control method and mechanism, may not only be applied to overhead cam engine, it can also be used to push away
Bar/pushing type engine；Not only can be used to drive exhaust valve, it is also possible to drive inlet valve；Can be used not only for engine
The valve motion of braking, it can also be used to waste gas recycling, cold start-up, close cylinder and other engine variable-valves motion.
It is its shape, big additionally, many mechanisms for showing here, such as timing valve system, commutation valve system and rocker arm body
Small, position and mounting means etc., can be different.
Further, engine brake here not only includes dialling idler wheel mechanism, the braking of two strokes or the braking of one point five stroke,
Also include engine braking mechanism and the method for other forms.
Therefore, the scope of the present invention should not determine by above-mentioned specific illustration, but by affiliated claim and
Its law suitable power is determined.
Claims (5)
1. it is a kind of drive engine brake timing oil control method, including one using timing oil-control mechanism control start mechanism
The supply time or the timing oil-control process of emptying time of dynamic device, described engine brake include braking fuel feeding during anon-normal
Valve, described timing oil-control mechanism includes timing oil circuit and timing valve system, described timing oil circuit will brake delivery valve with just
When valve system be connected, described timing valve system control engine brake is oil-filled or time of emptying or phase, and its feature exists
In：Described timing oil-control process comprises the steps that first, delivery valve, secondly, in engine cycle one are braked in connection
The section scheduled time or phase connect timing valve system, finally, or emptying oil-filled to engine brake.
2. the timing oil control method of engine brake is driven as claimed in claim 1, it is characterised in that：Described engine
It is mounted with timing oil circuit and timing valve system including cam and rocking arm, in rocking arm, described timing valve system includes reversal valve, just
When piston and timing piston stop mechanism, when cam is in interior base circle position, the timing piston in rocking arm is stopped by timing piston
Position mechanism is positioned at a precalculated position, and in described precalculated position, timing piston closes the timing oil circuit towards reversal valve；When
During actuated by cams rocker arms roll, timing piston is performed relative motion in rocking arm, relative motion of the timing piston in rocking arm
After a preset distance, the timing oil circuit towards reversal valve is opened, engine brake is oil-filled or emptying.
3. the timing oil control method of engine brake is driven as claimed in claim 1, it is characterised in that：Described engine
Including cam, rocker arm shaft and the first rocking arm and the second rocking arm that are disposed side by side on above rocker arm shaft, described timing oil circuit and just
When valve system be arranged in the first rocking arm and the second rocking arm, described timing valve system includes reversal valve, described reversal valve and
Engine brake is all disposed within the first rocking arm, when cam is in interior base circle position, timing oil circuit in the second rocking arm with
Timing oil circuit in first rocking arm disconnects, reversal valve state in geo-stationary in the first rocking arm；When actuated by cams rocking arm
During shake, timing oil circuit in the second rocking arm is close to each other with timing oil circuit in the first rocking arm, when the relative pan of two rocking arms
After more than a predetermined angular, the timing oil circuit in the timing oil circuit and the first rocking arm in the second rocking arm is connected, and opening is led to
The timing oil circuit of reversal valve, engine brake is oil-filled or emptying.
4. a kind of timing oil-control mechanism for driving engine brake, described engine brake includes a system during anon-normal
Dynamic delivery valve, described timing oil-control mechanism includes timing oil circuit and timing valve system, and described timing oil circuit will brake fuel feeding
Valve is connected with timing valve system, and described timing valve system controls engine brake oil-filled or emptying time or phase, its
It is characterised by：Described timing valve system includes reversal valve, and described reversal valve is located in a rocking arm of engine, when starting
When the cam of machine is in interior base circle position, described timing oil circuit disconnects with the reversal valve in rocking arm；When actuated by cams rocking arm shakes
Move to after a predetermined angular, the reversal valve in timing oil circuit and rocking arm is connected, engine brake is oil-filled or emptying.
5. the timing oil-control mechanism of engine brake is driven as claimed in claim 4, it is characterised in that：Described timing valve
System also includes timing piston and timing piston stop mechanism, and described timing piston and reversal valve are located in same rocking arm,
When cam is in interior base circle position, timing piston is positioned at a precalculated position in rocking arm by timing piston stop mechanism,
In described precalculated position, timing piston closes the timing oil circuit towards reversal valve；When actuated by cams rocker arms roll is pre- to one
Determine after angle, the timing oil circuit towards reversal valve is opened in relative motion of the timing piston in rocking arm, engine brake fills
Oil or emptying.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166614.0A CN106930798B (en) | 2017-03-20 | 2017-03-20 | Drive the timing oil control method and mechanism of engine brake |
| PCT/CN2017/077783 WO2017162182A1 (en) | 2016-03-25 | 2017-03-23 | Multifunctional engine brake |
| US16/086,379 US10550740B2 (en) | 2016-03-25 | 2017-03-23 | Multifunctional engine brake |
| EP17769459.3A EP3434870B1 (en) | 2016-03-25 | 2017-03-23 | Multifunctional engine brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166614.0A CN106930798B (en) | 2017-03-20 | 2017-03-20 | Drive the timing oil control method and mechanism of engine brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106930798A true CN106930798A (en) | 2017-07-07 |
| CN106930798B CN106930798B (en) | 2019-08-16 |
Family
ID=59433372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710166614.0A Active CN106930798B (en) | 2016-03-25 | 2017-03-20 | Drive the timing oil control method and mechanism of engine brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930798B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5758620A (en) * | 1997-03-21 | 1998-06-02 | Detroit Diesel Corporation | Engine compression brake system |
| JP2006514192A (en) * | 2003-01-30 | 2006-04-27 | ダイムラークライスラー・アクチェンゲゼルシャフト | Hydraulic rocker arm |
| US20110073068A1 (en) * | 2009-09-25 | 2011-03-31 | Hyundai Motor Company | Engine brake unit having combined oil passage |
| CN102787919A (en) * | 2011-05-18 | 2012-11-21 | 上海尤顺汽车部件有限公司 | Method and device for braking reset rocking arm |
| CN104411925A (en) * | 2012-04-20 | 2015-03-11 | 伊顿公司 | Variable valve lift systems, methods, and devices |
| CN104712397A (en) * | 2015-03-05 | 2015-06-17 | 上海尤顺汽车部件有限公司 | Combined rocker engine braking device |
| CN204851359U (en) * | 2015-07-21 | 2015-12-09 | 浙江康和机械科技有限公司 | Integrated engine brake's rocking arm |
| CN105715323A (en) * | 2016-03-25 | 2016-06-29 | 上海尤顺汽车部件有限公司 | Engine valve movement switching mechanism |
-
2017
- 2017-03-20 CN CN201710166614.0A patent/CN106930798B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5758620A (en) * | 1997-03-21 | 1998-06-02 | Detroit Diesel Corporation | Engine compression brake system |
| JP2006514192A (en) * | 2003-01-30 | 2006-04-27 | ダイムラークライスラー・アクチェンゲゼルシャフト | Hydraulic rocker arm |
| US20110073068A1 (en) * | 2009-09-25 | 2011-03-31 | Hyundai Motor Company | Engine brake unit having combined oil passage |
| CN102787919A (en) * | 2011-05-18 | 2012-11-21 | 上海尤顺汽车部件有限公司 | Method and device for braking reset rocking arm |
| CN104411925A (en) * | 2012-04-20 | 2015-03-11 | 伊顿公司 | Variable valve lift systems, methods, and devices |
| CN104712397A (en) * | 2015-03-05 | 2015-06-17 | 上海尤顺汽车部件有限公司 | Combined rocker engine braking device |
| CN204851359U (en) * | 2015-07-21 | 2015-12-09 | 浙江康和机械科技有限公司 | Integrated engine brake's rocking arm |
| CN105715323A (en) * | 2016-03-25 | 2016-06-29 | 上海尤顺汽车部件有限公司 | Engine valve movement switching mechanism |
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| Publication number | Publication date |
|---|---|
| CN106930798B (en) | 2019-08-16 |
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Address after: 1133 Juting Road, Zhuangxing Town, Fengxian District, Shanghai, 201415 Patentee after: Shanghai Youshun Automobile Technology Co.,Ltd. Address before: 1133 Juting Road, Zhuangxing Town, Fengxian District, Shanghai, 201415 Patentee before: Shanghai Universoon Autoparts Co.,Ltd. |