CN106382140B - A kind of engine braking control oil channel structures - Google Patents
A kind of engine braking control oil channel structures Download PDFInfo
- Publication number
- CN106382140B CN106382140B CN201610918933.8A CN201610918933A CN106382140B CN 106382140 B CN106382140 B CN 106382140B CN 201610918933 A CN201610918933 A CN 201610918933A CN 106382140 B CN106382140 B CN 106382140B
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- CN
- China
- Prior art keywords
- valve core
- rocker arm
- oil circuit
- oil
- working connection
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/06—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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
Abstract
A kind of engine braking control oil channel structures, valve core case（6）Top and oil circuit spool（7）Bottom offset, control valve core（4）Upper end withstand semisphere valve（8）, semisphere valve（8）Spherical surface and oil circuit spool（7）It offsets, semisphere valve（8）Upper end and hemisphere valve seat（9）It offsets, controls oil circuit（15）One end and rocker arm shaft（12）Internal oilhole is connected, and controls oil circuit（15）The other end is arranged in rocker arm（1）Cavity bottom, working connection II（17）One end and rocker arm shaft（12）Internal oilhole is connected, working connection II（17）The other end and rocker arm（1）Cavity top is connected, working connection I（16）One end and rocker arm（1）Cavity top is connected, working connection I（16）The other end and brake actuator（2）Upper end be connected.Simply, grade pressure release can avoid the high brake pressure oil when braking off, and release generates biggish impact and noise suddenly for compact-sized, assembly.
Description
Technical field
The present invention relates to a kind of control oil circuits, control oil channel structures more specifically to a kind of engine braking, belong to
Vehicle engine braking technical field.
Background technique
With the development of diesel technology, realized by engine braking vehicle slow down or the technology of steady descending
It widely applies, this process realizes execution/releasing movement of engine braking mechanism by solenoid valve control machine oil on-off.
Existing oil circuit control structure is usually provided with check valve at executing agency and locks high pressure oil, to guarantee to brake
Executing agency's movement is kept under state；Also repairing can be carried out to executing agency in the case where braking non-loaded situation simultaneously.But it is existing
Some oil circuit control structures are more complicated, while it has high requirements to engine oil pressure and machine oil degree of purity, and brake unlatching/solution
It is not rapid enough except acting.
Summary of the invention
The present invention is more complicated for existing oil circuit control structure structure, braking unlatching/releasing movement is not rapid etc. enough
Problem provides a kind of engine braking control oil channel structures.
To achieve the above object, the technical solution of the invention is as follows：A kind of engine braking control oil channel structures, including
Rocker arm, brake actuator, bulb inlay cylinder, and the rocker arm is nested on rocker arm shaft, and the brake actuator setting is being shaken
The valve end of arm, the bulb edge cylinder are connected with the bulb of brake actuator, further include having control valve core, valve core case, oil
Road spool, semisphere valve, hemisphere valve seat, plug, control oil circuit, working connection I and working connection II, the control valve core, valve core case,
Oil circuit spool, semisphere valve and hemisphere valve seat are arranged in rocker arm cavity, and the bottom of rocker arm cavity is arranged in the control valve core
Portion, the valve core case are fixed in rocker arm cavity, and control spring I, valve are provided between the bottom and control valve core of valve core case
The top of core print seat and the bottom of oil circuit spool offset, and semisphere valve, the semisphere valve spherical surface and oil are withstood in the upper end of control valve core
Road spool offsets, and the hemisphere valve seat is arranged in the inner groovy of oil circuit spool, and semisphere valve upper end offsets with hemisphere valve seat, institute
The plug stated is arranged in rocker arm cavity port and is fixed on rocker arm, and control bullet is provided between the hemisphere valve seat and plug
Spring II, described control oil circuit one end are connected with oilhole inside rocker arm shaft, and the control oil circuit other end is arranged at rocker arm cavity bottom
Portion, described II one end of working connection are connected with oilhole inside rocker arm shaft, and II other end of working connection is connected with rocker arm cavity top
Logical, described I one end of working connection is connected with rocker arm cavity top, the upper end phase of I other end of working connection and brake actuator
Connection.
The control valve core is three-level ladder shaft-like structure, and the middle part ladder of control valve core is nested in valve core case, is controlled
Semisphere valve is withstood on the top ladder top of spool processed, and lower step top surface and the valve of control valve core is arranged in the control spring I
Between the bottom of core print seat.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the top of valve core case and the bottom of oil circuit spool offset in the present invention, and semisphere valve is withstood in the upper end of control valve core,
Semisphere valve spherical surface offsets with oil circuit spool, and semisphere valve upper end offsets with hemisphere valve seat, control oil circuit one end and rocker arm shaft interior oil
Hole is connected, and control oil circuit other end setting oilhole inside rocker arm cavity bottom, I one end of working connection and rocker arm shaft is connected,
I other end of working connection is connected with rocker arm cavity top, and II one end of working connection is connected with rocker arm cavity top, and working connection II is another
One end is connected with the upper end of brake actuator.Control valve core has two sections of strokes to realize that classification is let out during brake release
Pressure, first segment stroke open semisphere valve, high brake pressure oil pressure are made to start to reduce；Second segment stroke opens oil circuit spool, completely
Lay down brake circuit pressure；The classification pressure release can avoid the high brake pressure oil when braking off, and release generates biggish impact suddenly
And noise.
2, semisphere valve is withstood in the upper end of control valve core in the present invention, and semisphere valve spherical surface offsets with oil circuit spool, hemisphere valve seat
It is arranged in the inner groovy of oil circuit spool, and semisphere valve upper end offsets with hemisphere valve seat；Therefore the control valve core of semisphere valve is controlled
There is guide frame with hemisphere valve seat, so that sealed reliable in the course of work.
3, the present invention in control valve core, oil circuit spool, semisphere valve, control spring and control spring structure can modularization,
So as to realize generalization, it can be integrated in exhaust rocker arm, it is compact-sized, assembly is simple, it is suitable for that Special rocking is arm-type, overhead
Formula, rocker arm integrated type or the braking of air valve yoke integrated engine, have wide range of applications.
Detailed description of the invention
Fig. 1 is damped condition schematic diagram of the present invention.
Fig. 2 is the non-brake operating condition schematic diagram of the present invention.
In figure, rocker arm 1, brake actuator 2, bulb edge cylinder 3, control valve core 4, control spring I 5, valve core case 6, oil circuit
Spool 7, semisphere valve 8, hemisphere valve seat 9 control spring II 10, plug 11, rocker arm shaft 12, rocker arm roller 13, roller pin 14, control
Oil circuit 15, working connection I 16, working connection II 17.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 2, a kind of engine braking control oil channel structures are engine braking unlatching/closing control oil
Road, the structure are suitble to all exhaust rocker arms 1 with engine braking；Including rocker arm 1, brake actuator 2, bulb edge cylinder 3,
Control valve core 4, valve core case 6, oil circuit spool 7, semisphere valve 8, hemisphere valve seat 9, plug 11, control 15 working connection I 16 of oil circuit and master
Oil circuit II 17.The rocker arm 1 is nested on rocker arm shaft 12, i.e., rocker arm 1 is supported by rocker arm shaft 12；The brake actuator
2 are arranged in the valve end of rocker arm 1, and the bulb edge cylinder 3 is connected with the bulb of brake actuator 2, organize imaging foot structure.It shakes
The cam end of arm 1 is provided with rocker arm roller 13, is provided with roller pin 14 in 13 inner hole of rocker arm roller.
Referring to Fig. 1 to Fig. 2, the control valve core 4, valve core case 6, oil circuit spool 7, semisphere valve 8 and hemisphere valve seat 9 are all provided with
It sets in 1 cavity of rocker arm, the plug 11 is arranged in 1 cavity port of rocker arm and is fixed on rocker arm 1.The control valve core
4 are arranged in the bottom of 1 cavity of rocker arm, and the valve core case 6 is fixed in 1 cavity of rocker arm, the bottom of valve core case 6 and control valve core
Control spring I 5 is provided between 4；The top of valve core case 6 and the bottom of oil circuit spool 7 offset, and the upper end of control valve core 4 is withstood
Semisphere valve 8.8 spherical surface of semisphere valve offsets with oil circuit spool 7, and the inner groovy of oil circuit spool 7 is arranged in the hemisphere valve seat 9
It is interior, and 8 upper end of semisphere valve offsets with hemisphere valve seat 9；Control spring II is provided between the hemisphere valve seat 9 and plug 11
10。
Referring to Fig. 1 to Fig. 2, described 15 one end of control oil circuit is connected with 12 inside oilhole of rocker arm shaft, controls oil circuit 15
Other end setting controls the movement that oil circuit 15 is used for control valve core 4 in 1 cavity bottom of rocker arm.Described II 17 one end of working connection
It is connected with 12 inside oilhole of rocker arm shaft, II 17 other end of working connection is connected with 1 cavity top of rocker arm；The working connection I
16 one end are connected with 1 cavity top of rocker arm, and I 16 other end of working connection is connected with the upper end of brake actuator 2.
Referring to Fig. 1, under damped condition, control oil circuit 15 is without high pressure oil, active force of the control valve core 4 due to controlling spring I 5
Move control valve core 4 down；Semisphere valve 8 and the support of the spool 4 out of hand of hemisphere valve seat 9 at this time, in control spring II 10
Lower downlink is acted on, thus drive 7 downlink of oil circuit spool that working connection II 17 is blocked to be connected to working connection I 16, oil circuit spool 7 and spool
Seat 6 completely encloses working connection I 16 and 8 upper area of semisphere valve, forms braking.
Referring to fig. 2, under non-brake operating condition, control oil circuit 15 is oil-filled, and control valve core 4 is gone upward under the action of controlling oil pressure
At maximum displacement, semisphere valve 8 and oil circuit spool 7 are opened at this time, and working connection I 16 passes through between oil circuit spool 7 and valve core case 6
Gap is connected to the working connection II 17 in rocker arm 12.In brake release, control oil circuit 15 is oil-filled, and control valve core 4 is in control oil
Uplink under the action of pressure, first control valve core 4 open semisphere valve 8, the high pressure oil and main oil on 8 top of working connection I 16 and semisphere valve
Road II 17 is connected to by the gap between semisphere valve 8 and oil circuit spool 7, and high pressure oil pressure starts to reduce；With control valve core 4 after
Continuous uplink, pushes oil circuit spool 7 open, and working connection I 16 is directly connected to working connection II 17 at this time, high-voltage oil cavity pressure releases, braking
It releases.Therefore, it is to open semisphere valve 8 for the first time, first lays down a part including pressure releases twice during brake release
Pressure；It is the opening of oil circuit spool 7 for the second time, high-voltage oil cavity is connected to working connection I 16 and working connection II 17 completely；Therefore it realizes
Classification pressure release, avoiding the high brake pressure oil when braking off, release generates biggish impact and noise suddenly.
Control valve core 4, oil circuit spool 7, semisphere valve 8, control spring I 5 and control bullet referring to Fig. 1 to Fig. 2, in the present invention
II 10 structure generally applicableization of spring, it is only necessary to do Aided design for different 1 structures of rocker arm；Meanwhile the present invention is guaranteeing distribution
While mechanism contacts, working connection I 16 and working connection II 17 can play the role of being lubricated and braking, can effectively quickly
Releasing braking, and reduce requirement of the braking system to machine oil degree of purity, simplify entire control and brake circuit.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, and above structure all shall be regarded as belonging to
Protection scope of the present invention.
Claims (2)
1. a kind of engine braking controls oil channel structures, including rocker arm（1）, brake actuator（2）, bulb inlay cylinder（3）, described
Rocker arm（1）It is nested in rocker arm shaft（12）On, the brake actuator（2）It is arranged in rocker arm（1）Valve end, the bulb
Inlay cylinder（3）With brake actuator（2）Bulb be connected, it is characterised in that：It further include having control valve core（4）, valve core case
（6）, oil circuit spool（7）, semisphere valve（8）, hemisphere valve seat（9）, plug（11）, control oil circuit（15）, working connection I（16）With main oil
Road II（17）, the control valve core（4）, valve core case（6）, oil circuit spool（7）, semisphere valve（8）With hemisphere valve seat（9）It is respectively provided with
In rocker arm（1）In cavity, the control valve core（4）It is arranged in rocker arm（1）The bottom of cavity, the valve core case（6）It is fixed
In rocker arm（1）In cavity, valve core case（6）Bottom and control valve core（4）Between be provided with control spring I（5）, valve core case（6）
Top and oil circuit spool（7）Bottom offset, control valve core（4）Upper end withstand semisphere valve（8）, the semisphere valve（8）
Spherical surface and oil circuit spool（7）It offsets, the hemisphere valve seat（9）It is arranged in oil circuit spool（7）Inner groovy in, and semisphere valve（8）
Upper end and hemisphere valve seat（9）It offsets, the plug（11）It is arranged in rocker arm（1）Cavity port and it is fixed on rocker arm（1）On, institute
The hemisphere valve seat stated（9）With plug（11）Between be provided with control spring II（10）, the control oil circuit（15）One end with shake
Arm axle（12）Internal oilhole is connected, and controls oil circuit（15）The other end is arranged in rocker arm（1）Cavity bottom, the working connection II
（17）One end and rocker arm shaft（12）Internal oilhole is connected, working connection II（17）The other end and rocker arm（1）Cavity top is connected,
The working connection I（16）One end and rocker arm（1）Cavity top is connected, working connection I（16）The other end and brake actuator
（2）Upper end be connected；
Under damped condition, oil circuit is controlled（15）Without high pressure oil, control valve core（4）Due to controlling spring I（5）Active force make to control
Spool（4）It moves down, at this time semisphere valve（8）And hemisphere valve seat（9）Spool out of hand（4）Support, in control spring II
（10）Under the action of downlink, to drive oil circuit spool（7）Downlink blocks working connection II（17）With working connection I（16）Connection, oil
Road spool（7）With valve core case（6）By working connection I（16）And semisphere valve（8）Upper area is completely enclosed, forms braking；
Under non-brake operating condition, oil circuit is controlled（15）It is oil-filled, control valve core（4）Maximum displacement is gone upward under the action of controlling oil pressure
Locate, at this time semisphere valve（8）And oil circuit spool（7）It opens, working connection I（16）Pass through oil circuit spool（7）With valve core case（6）Between
Gap and rocker arm（1）In working connection II（17）Connection；In brake release, oil circuit is controlled（15）It is oil-filled, control valve core（4）
Uplink, first control valve core under the action of controlling oil pressure（4）Open semisphere valve（8）, working connection I（16）And semisphere valve（8）On
The high pressure oil and working connection II in portion（17）Pass through semisphere valve（8）With oil circuit spool（7）Between gap connection, high pressure oil pressure opens
Begin to reduce；As control valve core 4 continues uplink, oil circuit spool is pushed open（7）, working connection I at this time（16）Directly with working connection II
（17）Connection, high-voltage oil cavity pressure releases, brake release.
2. a kind of engine braking according to claim 1 controls oil channel structures, it is characterised in that：The control valve core
（4）For three-level ladder shaft-like structure, control valve core（4）Middle part ladder be nested in valve core case（6）It is interior, control valve core（4）It is upper
Withstand semisphere valve in ladder top in portion（8）, the control spring I（5）It is arranged in control valve core（4）Lower step top surface and spool
Seat（6）Bottom between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918933.8A CN106382140B (en) | 2016-10-21 | 2016-10-21 | A kind of engine braking control oil channel structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918933.8A CN106382140B (en) | 2016-10-21 | 2016-10-21 | A kind of engine braking control oil channel structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106382140A CN106382140A (en) | 2017-02-08 |
| CN106382140B true CN106382140B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610918933.8A Active CN106382140B (en) | 2016-10-21 | 2016-10-21 | A kind of engine braking control oil channel structures |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110462173B (en) * | 2017-03-27 | 2021-08-27 | 沃尔沃卡车集团 | Rocker arm for internal combustion engine |
| CN106968753B (en) * | 2017-04-20 | 2023-03-24 | 东风商用车有限公司 | Brake actuating mechanism for engine brake oil way and use method thereof |
| CN110284937A (en) * | 2019-07-19 | 2019-09-27 | 浙江康和机械科技有限公司 | A kind of hydraulic auxiliary braking rocker structure directly driven |
| CN110863882A (en) * | 2019-12-20 | 2020-03-06 | 浙江九隆机械有限公司 | Brake |
| CN111894694B (en) * | 2020-06-29 | 2021-10-15 | 东风商用车有限公司 | Lift-controllable hydraulic tappet system |
| CN112065525B (en) * | 2020-09-09 | 2021-11-19 | 潍柴动力股份有限公司 | Rocker arm mechanism and engine assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3809033A (en) * | 1972-07-11 | 1974-05-07 | Jacobs Mfg Co | Rocker arm engine brake system |
| CN101526018B (en) * | 2009-03-11 | 2012-05-30 | 浙江黎明发动机零部件有限公司 | Compression braking device of four-stroke cycle internal combustion engine |
| CN103758606B (en) * | 2013-11-20 | 2016-02-10 | 浙江康和机械科技有限公司 | The integrated form rocker arm brake apparatus of motor |
| CN204386688U (en) * | 2014-12-25 | 2015-06-10 | 浙江康和机械科技有限公司 | The integrated rocker arm brake apparatus of mechanically joined motor reset is risen with valve |
| 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 |
| CN206175016U (en) * | 2016-10-21 | 2017-05-17 | 东风商用车有限公司 | Engine brake control circuit structure |
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2016
- 2016-10-21 CN CN201610918933.8A patent/CN106382140B/en active Active
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