CN209053652U - It can be changed electro-hydraulic valve mechanism entirely - Google Patents
It can be changed electro-hydraulic valve mechanism entirely Download PDFInfo
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- CN209053652U CN209053652U CN201821899226.XU CN201821899226U CN209053652U CN 209053652 U CN209053652 U CN 209053652U CN 201821899226 U CN201821899226 U CN 201821899226U CN 209053652 U CN209053652 U CN 209053652U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 14
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- 125000006850 spacer group Chemical group 0.000 claims description 11
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 5
- 239000010720 hydraulic oil Substances 0.000 description 9
- 230000008676 import Effects 0.000 description 6
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- 238000000034 method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
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Abstract
It can be changed electro-hydraulic valve mechanism entirely the utility model discloses a kind of, comprising: camshaft and valve component；Sliding axle, sliding sleeve, piston and sliding axle reset spring, the sliding axle and the piston are slidably and sealingly connected with the sliding sleeve respectively, the sliding axle is controlled by the cam surface of the camshaft, the piston abuts against the valve by spring capping, in the sliding sleeve, space between the sliding axle and the piston forms the hydraulic cavities of sealing, and the sliding axle reset spring clamps between the sliding axle and the piston；The sliding sleeve offers oil-through-hole, is provided with electromagnetic switch valve between the oil-through-hole and the low pressure oil pocket of engine.The function of fully variable valve actuator for air can be realized by the control to the electromagnetic switch valve opening and closing moment in the utility model.Electromagnetic switch valve uses hydraulic big flow high-speed figure valve open in usual, and structure is simple, and at low cost, spool stress balance, the resistance of motion is small, and big flow, quick response may be implemented.
Description
Technical field
The utility model relates to engine air valve device technical fields, more particularly to one kind to be joined by solenoid valve and camshaft
That closes control valve motion can be changed electro-hydraulic valve mechanism entirely.
Background technique
Fully variable valve actuator for air (Fully Variable Valve System, abbreviation FVVS) can be achieved valve and most rise higher
Journey, valve duration angle and port timing three continuous variable, be of great significance to the energy-saving and emission-reduction of engine.FVVS
It can control in such a way that inlet valve early closes (EIVC) into the working medium quantity in cylinder, thus cancel air throttle, this nothing
Pumping loss will be greatly reduced in air throttle gasoline engine, reduce fuel oil consumption when middle Smaller load by 10-15%.Full changeable air valve
Mechanism is matched with charge inter cooling, the high problem of the detonation and thermic load after can solve engine booster, flat increasing substantially
Low-temperature burning is realized under the premise of equal effective pressure, improves engine thermal efficiency and reduces the discharge of pernicious gas；Therefore FVVS
Technology has become one of the important development direction of internal combustion engine new technology.
Currently, external relatively advanced fully variable valve actuator for air is the MultiAir of Schaeffler and Fiat's joint research and development
(also known as UniAir) system, system that employs the electro-hydraulic valve mechanisms of camshaft actuated formula, are combined by camshaft with solenoid valve
Control valve motion rule.The working principle of the system is as follows: hydraulic piston is pushed by cam, hydraulic piston by hydraulic cavities with
Piston is driven to be connected, and hydraulic cavities are then by a switching regulator solenoid valve control.It is hydraulic when solenoid valve is in the completely closed state
Piston pushes driving piston by fluid pressure, and the hydraulic pressure that cam rotation generates is passed to valve；Inlet valve is complete at this time
It is controlled entirely by cam, it is in the open state.When solenoid valve is in fully open state, fluid pressure can not transmit driving force,
Hydraulic piston can not push driving piston, and inlet valve is no longer controlled by cam and is in falling or closed state.By to electromagnetism
Valve is opened and closed the control at moment, and a variety of different valve motion rules can be realized, realize the function of fully variable valve actuator for air.But
It is that electromagnetic valve structure is complicated, it is expensive, limit the popularization and application of the technology.
In order to substitute above-mentioned solenoid valve, Chinese invention patent CN100410513C discloses a kind of valve timing continuous variable
Valve System of Internal Combustion Engine, including valve assembly, hydraulic pressure cylinder assembly, hydraulic cylinder exit port control device, hydraulic cylinder import barrier dress
It sets and camshaft drive component.The system during hydraulic cylinder is discharged in oil liquid, that there are pressure oscillations is big for hydraulic low-pressure system,
Lead to the jiggly problem of work, during internal combustion engine stops working, there are lubricating oil leakage, what is admitted air into asks hydraulic system
Topic, causes the system to be difficult to promote and apply.
To solve the above-mentioned problems, 103334805 B of Chinese invention patent CN discloses a kind of internal combustion engine again can be changed liquid entirely
It calms the anger the oil-controlling device of door system, which is actually a kind of rotor valve of adjustable outlet, is set to hydraulic-driven dress
It sets between low-pressure system, has the function of switch valve, opening and closing moment (phase angle) can be any in a certain range
Adjustment, also has the function of accumulation of energy and sealing, and manufacture craft is simple.But the device rotor valve is with engine cylinder number
Increase, length is increase accordingly, and structure is complicated, and manufacture is difficult, and can only control the close moment for changing valve, and start-up time cannot
Control, affects its popularization and application.
Utility model content
For the above-mentioned deficiency of the prior art, the utility model provide it is a kind of can be changed electro-hydraulic valve mechanism entirely, pass through cam
Axis and solenoid valve jointly control valve motion, not only fast response time, but also easy to control.
In order to solve the above technical problems, the following technical solution of the utility model:
It is a kind of to can be changed electro-hydraulic valve mechanism entirely, comprising: camshaft and valve component, the valve assembly include valve, gas
Door reset spring and spring capping；Sliding axle, sliding sleeve, piston and sliding axle reset spring, the sliding axle and the piston point
It is not slidably and sealingly connected with the sliding sleeve, the sliding axle is controlled by the cam surface of the camshaft, and the piston abuts against institute
Valve is stated, in the sliding sleeve, the space between the sliding axle and the piston forms the hydraulic cavities of sealing, the sliding axle
Reset spring clamps between the sliding axle and the piston；The sliding sleeve offers oil-through-hole, the oil-through-hole with start
Electromagnetic switch valve is provided between the low pressure oil pocket of machine；The electromagnetic switch valve is that the hydraulic big flow of conical surface seal type open in usual is high
Speed digital valve, the hydraulic big flow high-speed figure valve of conical surface seal type open in usual include valve body and are slidably mounted on the valve body
Interior spool, the spool are column structure, and the rear end cap of the spool is equipped with columned moving armature, the moving armature rear
Valve body in be equipped with and determine armature, it is described to determine to be equipped with spool return spring, the center of the spool between armature and the spool
Equipped with pre-and post perforative through-hole, the valve body is equipped with inlet and liquid outlet, and the inlet is arranged around the spool, institute
It states liquid outlet and is located at one end of valve body, on the axis of the spool, the inlet is connected to oil-through-hole, the liquid outlet
It is connected to the low pressure oil pocket of the engine, the valve body includes front valve shell, rear valve body and is arranged in front valve shell and rear valve body
Between spacer, the front valve shell and rear valve body be made of permeability magnetic material, and the spacer is made of magnetic separator；It is described to determine armature
It is located at the overlay area of spacer with the interface of the moving armature；Separately there is annulus assembly set to be mounted in the outside of the valve body,
The spacer is located in the inner cavity of coil block, and the front end of the rear end of the front valve shell and the rear valve body is plugged on institute respectively
State the both ends of coil block cavity；The rear valve body is both ends open, rear end with externally threaded tubular structure, the rear valve body
Rear end be connected through a screw thread end cap, positioning ring of the rear end for determining armature with protrusion, the positioning ring and rear valve body
Between be equipped with adjustment gasket；The valve pocket around the spool is equipped in the inner cavity of the front valve shell, the front end of the valve pocket is equipped with
The inner conical surface of inner chamfer shape, the spool are equipped with the dashpot of the annular of connection inlet, and the front end of the dashpot is equipped with
The male cone (strobilus masculinus) of the inner conical surface is matched, the inclination angle of the inner conical surface is greater than the inclination angle of male cone (strobilus masculinus).
Wherein, gap is equipped between the moving armature and the inner wall of the valve body, the spool is equipped with pressure compensation opening,
The pressure compensation opening is connected to the gap between the inner cavity and the moving armature and the valve body of the spool.
Wherein, the front end for determining armature is equipped with spring mounting hole, and the spool return spring is set to the spring peace
It fills in hole.
The utility model after adopting the above technical scheme, its technical effect is that:
1, electromagnetic switch valve and camshaft jointly control valve motion, by being opened and closed the control at moment to electromagnetic switch valve,
The function of fully variable valve actuator for air can be realized.
2, the hydraulic big flow high-speed figure valve arrangement of conical surface seal type open in usual is simple, spool stress balance, the resistance of motion
It is small, big flow, quick response may be implemented, and electromagnetic coil is located at the middle section of valve body, overall structure is more compact；Electromagnetic efficiency
It is high.
3, since the conicoid inclination angle of spool and valve body junction is differed, so that sealing surface realizes line contact sealing, it is close
Envelope band area not will cause the imbalance of hydraulic pressure close to zero, therefore the valve is not only able to achieve import high pressure, exports low pressure
The control of hydraulic oil can be used for import high pressure, export the control of the hydraulic oil of high pressure, while also improve sealing effect, keep away
Exempt from leakage caused by sealing surface uneven wear.
Detailed description of the invention
Fig. 1 is the structure sectional view that the utility model can be changed electro-hydraulic valve mechanism embodiment entirely；
Fig. 2 is the structural schematic diagram of switch electromagnetic valve in Fig. 1；
Fig. 3 is the portion D enlarged drawing in Fig. 2；
Fig. 4 is the port timing structural schematic diagram in cam of camshaft face in Fig. 1；
Fig. 5 is that embodiment illustrated in fig. 1 closes electromagnetic switch valve song obtained in the different angle of the ascent stage of cam
Shaft angle/valve lift diagram；
Fig. 6 is that embodiment illustrated in fig. 1 opens electromagnetic switch valve song obtained in the different angle of the lower liter section of cam
Shaft angle/valve lift diagram；
Fig. 7 is curve shown in Fig. 6 to be applied to the control of inlet valve and curve graph that exhaust valve is controlled only with camshaft；
Fig. 8 is curve shown in Fig. 5 to be applied to the control of inlet valve and curve graph that exhaust valve is controlled only with camshaft；
In figure, 101- camshaft, the 101A- ascent stage, 101B- descending branch, 102- sliding axle, 103- sliding sleeve, 104- sliding
Axis reset spring, 105- piston, 106- valve return springs, 107- valve, 108- electromagnetic switch valve, 109- low pressure oil pocket,
110- oil-through-hole；111- spring capping；
1- front valve shell, 11- rear valve body, 12- spacer, 2- spool, 3- inlet, 4- liquid outlet, 5- spool return spring, 6-
Determine armature, 7- coil block, 8- end cap, 9- valve pocket, 16- adjusts gasket, 21- through-hole, 22- moving armature, 23- pressure compensation opening,
25- male cone (strobilus masculinus), 31- dashpot, the wear-resisting steel loop of 33-, 34- inner conical surface, the inclination angle H-, the inclination angle G-；
β-entire ascent stage corresponding cam angle degree, the corresponding cam angle degree in a certain position in the β x- ascent stage；σ-is entire
The corresponding cam angle degree of descending branch, the corresponding cam angle degree in a certain position in σ x- descending branch；A- exhaust valve controlling curve, B-
Inlet valve controlling curve, C- valve overlap.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of can be changed electro-hydraulic valve mechanism entirely, sliding axle 102 and piston 105 are slided with sliding sleeve 103 respectively
It is tightly connected, sliding axle 102 is controlled by the cam surface of camshaft 101, and piston 105 abuts against valve 107, valve return springs
106 are set between the body of engine and spring capping 111, and valve 107, valve return springs 106 and spring capping 111 are total
It is same to constitute valve assembly.
In sliding sleeve 103, the space between sliding axle 102 and piston 105 forms the hydraulic cavities of sealing, and sliding axle resets bullet
Spring 104 clamps between sliding axle 102 and piston 105.Sliding sleeve 103 offers oil-through-hole 110, oil-through-hole 110 and engine
Electromagnetic switch valve 108 is provided between low pressure oil pocket 109.
As Fig. 2 and Fig. 3 jointly shown in, electromagnetic switch valve 108 is the hydraulic big flow high-speed figure of conical surface seal type open in usual
Valve, including valve body and it is slidably mounted on the intracorporal spool 2 of the valve, the spool 2 is column structure, and the rear end of spool 2 is set with
Have columned moving armature 22, be equipped in the valve body at 22 rear of moving armature and determine armature 6, it is described determine armature 6 and spool 2 it
Between be equipped with spool return spring 5, the center of spool 2 is equipped with pre-and post perforative through-hole 21, and the valve body is equipped with inlet 3 and goes out
Liquid mouth 4, the inlet 3 are arranged around spool 2, and the liquid outlet 4 is located at one end of valve body, on the axis of spool 2, institute
It states inlet 3 to be connected to oil-through-hole 110, the liquid outlet 4 is connected to the low pressure oil pocket 109 of the engine.What valve was opened
When, liquid enters the inner cavity of valve body by inlet 3, then is discharged by liquid outlet 4, and through-hole 21 can be by 2 front end of spool
Liquid imports in the cavity of 2 rear end of spool, makes 2 stress balance of spool, reduces its running resistance, improves response speed.
The valve body includes front valve shell 1, rear valve body 11 and the spacer 12 being arranged between front valve shell 1 and rear valve body 11,
The front valve shell 1 and rear valve body 11 are made of permeability magnetic material, and the spacer 12 is made of magnetic separator, using welding or bonding
Three is connected as one by technique；The interface for determining armature 6 and moving armature 22 is located at the overlay area of spacer 12；Separately have
Annulus component 7 is sleeved on the outside of valve body, and the spacer 12 is located in the inner cavity of coil block 7, the rear end of front valve shell 1 with
And the front end of rear valve body 11 is plugged on the both ends of 7 cavity of coil block respectively.The rear valve body 11 is both ends open, rear end has
Externally threaded tubular structure, the rear end of rear valve body 11 have been connected through a screw thread end cap 8, and the rear end for determining armature 6 is with protrusion
Positioning ring, between the positioning ring and rear valve body 11 be equipped with adjustment gasket 16.The middle section of spool is arranged in not only in coil block 7
Integrally-built length is reduced, keeps structure more compact, also concedes the space for determining armature rear end, can finely tune and determine armature 6
Position makes its work in optimum state so as to adjust the working clearance of fixed and moving armature.In the present embodiment, end cap 8 is screwed off
The working clearance of fixed and moving armature can be adjusted in adjustment gasket 16 by increasing different-thickness.
Gap is equipped between the moving armature 22 and the inner wall of valve body, the spool 2 is equipped with pressure compensation opening 23, described
Pressure compensation opening 23 is connected to the gap between the inner cavity and moving armature 22 and valve body of spool 2.When valve is opened, liquid can
To enter the gap between moving armature 22 and valve body by the through-hole 21 at 2 center of spool and pressure compensation opening 23, make 2 stress of spool
Balance reduces the resistance that spool 2 moves, and is conducive to the response speed for improving spool.
As Fig. 2 and Fig. 3 jointly shown in, in the inner cavity of the front valve shell 1 be equipped with around spool 2 valve pocket 9, the valve pocket 9
Front end be equipped with inner chamfer shape inner conical surface 34, the spool 2 be equipped with connection inlet 3 annular dashpot 31.It is described
The front end of dashpot 31 is equipped with the male cone (strobilus masculinus) 25 of matching inner conical surface 34, and the inclination angle G of the inner conical surface 34 is greater than inclining for male cone (strobilus masculinus) 25
Angle H.The present embodiment be open type valve, spool 2 move to rear end, valve close when, male cone (strobilus masculinus) 25 with inner conical surface 34
It is sealed with being formed, since the inclination angle of two conical surfaces is differed, sealing herein is resisted against male cone (strobilus masculinus) by the innermost dog-ear of inner conical surface 34
It is formed on 25, is the sealing that toroid and tapered surface are formed, has the characteristics that the processing is simple, sealing effect is good, due to sealing surface
Using line contact sealing, band area not will cause the imbalance of hydraulic pressure close to zero, thus the valve be not only able to achieve into
Mouth high pressure, exports the control of the hydraulic oil of low pressure, can be used for import high pressure, export the control of the hydraulic oil of high pressure.
In addition, being the variation for causing running parameter after avoiding moving armature 22 from wearing, the present embodiment is in the front end of moving armature 22
Wear-resisting steel loop 33 is fixedly mounted, wear-resisting steel loop 33 is made of high-intensitive, high abrasion material.Valve is opened, moving armature 22 drives
During spool 2 moves ahead, wear-resisting steel loop 33 collides the rear end of valve pocket 9, plays the role of limit.
In order to illustrate the working principle of the utility model, the port timing structure that Fig. 4 shows 101 cam surface of camshaft is shown
It is intended to, in cam surface, the part that compression valve is opened, referred to as ascent stage 101A, the part of valve-closing, referred to as descending branch
The corresponding cam angle degree of 101B, ascent stage 101A is β x, maximum angle β；The corresponding cam angle degree of descending branch 10B is σ x, most
Wide-angle is σ.
The utility model jointly controls valve motion by camshaft and switch electromagnetic valve, and working principle is as follows:
As Fig. 4 and Fig. 5 jointly shown in, when switch electromagnetic valve 108 cam angle more than or equal to β circumferential section be powered
It closes, when the circumferential section more than or equal to σ is opened, since the hydraulic oil in sliding sleeve 103 is not forced out, sliding axle/sliding sleeve/
There is no variation, the movement travel curves and cam surface of valve to correspond for the positional relationship of piston three, and there is no becoming
Change, sees the beta curve in Fig. 5, i.e. range line.
It is closed when switch electromagnetic valve 108 is powered in cam portion (such as β x) of the ascent stage 101A cam angle less than β,
When descending branch is greater than or equal to β x circumferential section opening, rising x sections of β-β, 102 downlink of sliding axle, at this moment due to switching electromagnetism
Valve 108 is in the open state, and hydraulic oil flows out sliding sleeve inner cavity by oil-through-hole 110, and piston 105 and valve 107 do not move.It arrives
β x point, control switch solenoid valve 108 are closed, and hydraulic oil no longer flows out, and sliding axle 102 starts to push hydraulic oil, and pushes piston
105 movements.Before cam persistent movement to the β x of descending branch 101B, since switch electromagnetic valve 108 is not turned on, in sliding sleeve 103
Hydraulic oil does not flow, therefore the motion profile of the valve of this section is corresponded with cam completely.
When cam goes to descending branch β x angle, valve-closing, cam is continued to rotate, convex at this moment if not opening solenoid valve
Wheel shaft 101 will be separated with sliding axle 102, but the opening travel curve of valve 107 will no longer change.
The control moment may be selected to open solenoid valve later in cam descending branch β x angle.The size of control adjustment β x, can shape
At different valve opening curves.Choose: 4 > β of β > β 1 > β, 2 > β, 3 > β 5, for simplicity, we are β corresponding curve respectively
Curve, 1 curve of β, 2 curve of β, 3 curve of β, 4 curve of β, 5 curve of β, as shown in Figure 5.
Based on above-mentioned analysis, selection switch electromagnetic valve is closed at different times, and different curves can be obtained.It is corresponding certain
Valve close moment β x and different curves can be respectively obtained if the opening moment σ x (σ x < β x) of the different valve of selection, such as
Shown in Fig. 6.
Within the engine, in order to guarantee its performance, be generally designed the process of scavenging, that is, require before exhaust valve closing and
Before inlet valve is opened, at the time of thering is one section of import/exhaust door to open jointly, it is called valve overlap C.
It is exhaust valve controlling curve referring to Fig. 7, A, B is inlet valve controlling curve, and exhaust valve only controls gas by cam stroke
Door stroke, and inlet valve is using beta curve (maximum curve) control in Fig. 6.It is greater than or equal to the angle of β in the cam ascent stage
Solenoid valve is closed, is controlled in cam descending branch angle σ x (σ x < β) and opens solenoid valve, so that the unlatching size of valve is controlled, it is special
Point is that the corresponding crank angle of the start-up time of valve is constant, and close moment changes.This scheme can guarantee the guarantor of engine
Valve overlap C is stayed, realizes scavenging process.
To some engines, in order to reduce discharge, using the scheme of internal exhaust gas recirculation (abbreviation EGR).Such as Fig. 8 institute
Show, A is exhaust valve controlling curve, and B is inlet valve controlling curve, and exhaust valve only controls valve stroke by cam stroke, and air inlet
Door is using the curve controlled in Fig. 5.By way of at different operating condition reduction valve scavenging angles, make pre- in cylinder after being vented
Stay a part of exhaust gas.
The utility model is not limited to the above embodiment, all design, principle, structure and methods based on the utility model
Made various improvement, fall within the protection scope of the utility model.
Claims (3)
1. a kind of can be changed electro-hydraulic valve mechanism entirely, comprising:
Camshaft and valve component, the valve assembly include valve, valve return springs and spring capping；
Sliding axle, sliding sleeve, piston and sliding axle reset spring, the sliding axle and the piston slide with the sliding sleeve close respectively
Envelope connection, the sliding axle are controlled by the cam surface of the camshaft, and the piston abuts against the valve, in the sliding sleeve
Interior, the space between the sliding axle and the piston forms the hydraulic cavities of sealing, and the sliding axle reset spring is clamped in institute
It states between sliding axle and the piston；
The sliding sleeve offers oil-through-hole, is provided with electromagnetic switch valve between the oil-through-hole and the low pressure oil pocket of engine,
It is characterized in that,
The electromagnetic switch valve is the hydraulic big flow high-speed figure valve of conical surface seal type open in usual, the conical surface seal type open in usual
Hydraulic big flow high-speed figure valve includes valve body and is slidably mounted on the intracorporal spool of the valve, and the spool is column structure,
The rear end cap of the spool is equipped with columned moving armature, is equipped in the valve body at the moving armature rear and determines armature, described fixed
Spool return spring is equipped between armature and the spool, the center of the spool is equipped with pre-and post perforative through-hole, the valve body
It is equipped with inlet and liquid outlet, the inlet is arranged around the spool, and the liquid outlet is located at one end of valve body, is located at
On the axis of the spool, the inlet is connected to oil-through-hole, and the liquid outlet is connected to the low pressure oil pocket of the engine,
The valve body includes front valve shell, rear valve body and the spacer being arranged between front valve shell and rear valve body, the front valve shell and rear valve
Body is made of permeability magnetic material, and the spacer is made of magnetic separator；The interface for determining armature and the moving armature be located at every
The overlay area of set；Separately there is annulus assembly set to be mounted in the outside of the valve body, the spacer is located at the inner cavity of coil block
In, the front end of the rear end of the front valve shell and the rear valve body is plugged on the both ends of the coil block cavity respectively；It is described
Rear valve body is both ends open, rear end with externally threaded tubular structure, and the rear end of the rear valve body has been connected through a screw thread end cap,
Positioning ring of the rear end for determining armature with protrusion is equipped with adjustment gasket between the positioning ring and rear valve body；The preceding valve
The valve pocket around the spool is equipped in the inner cavity of body, the front end of the valve pocket is equipped with the inner conical surface of inner chamfer shape, the spool
It is equipped with the dashpot of the annular of connection inlet, the front end of the dashpot is equipped with the male cone (strobilus masculinus) for matching the inner conical surface, institute
The inclination angle for stating inner conical surface is greater than the inclination angle of male cone (strobilus masculinus).
2. can be changed electro-hydraulic valve mechanism entirely as described in claim 1, which is characterized in that the moving armature is interior with the valve body
Between wall be equipped with gap, the spool be equipped with pressure compensation opening, the pressure compensation opening be connected to the spool inner cavity and
Gap between the moving armature and the valve body.
3. can be changed electro-hydraulic valve mechanism entirely as described in claim 1, which is characterized in that the front end for determining armature is equipped with spring
Mounting hole, the spool return spring are set in the spring mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821899226.XU CN209053652U (en) | 2018-11-16 | 2018-11-16 | It can be changed electro-hydraulic valve mechanism entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821899226.XU CN209053652U (en) | 2018-11-16 | 2018-11-16 | It can be changed electro-hydraulic valve mechanism entirely |
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| Publication Number | Publication Date |
|---|---|
| CN209053652U true CN209053652U (en) | 2019-07-02 |
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| CN201821899226.XU Active CN209053652U (en) | 2018-11-16 | 2018-11-16 | It can be changed electro-hydraulic valve mechanism entirely |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486110A (en) * | 2019-09-12 | 2019-11-22 | 潍坊力创电子科技有限公司 | It can be changed electro-hydraulic valve mechanism entirely with pooling feature |
| CN110566315A (en) * | 2019-10-21 | 2019-12-13 | 潍坊力创电子科技有限公司 | Compression release type in-cylinder brake device for engine |
| CN110566310A (en) * | 2019-10-19 | 2019-12-13 | 潍坊力创电子科技有限公司 | compression release type in-cylinder brake device for engine |
| CN110985155A (en) * | 2020-01-04 | 2020-04-10 | 潍坊力创电子科技有限公司 | Fully variable electro-hydraulic valve system |
| CN111060319A (en) * | 2019-12-20 | 2020-04-24 | 大连理工大学 | Device and method for applying gas force to engine motion mechanism |
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2018
- 2018-11-16 CN CN201821899226.XU patent/CN209053652U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486110A (en) * | 2019-09-12 | 2019-11-22 | 潍坊力创电子科技有限公司 | It can be changed electro-hydraulic valve mechanism entirely with pooling feature |
| CN110566310A (en) * | 2019-10-19 | 2019-12-13 | 潍坊力创电子科技有限公司 | compression release type in-cylinder brake device for engine |
| CN110566315A (en) * | 2019-10-21 | 2019-12-13 | 潍坊力创电子科技有限公司 | Compression release type in-cylinder brake device for engine |
| CN111060319A (en) * | 2019-12-20 | 2020-04-24 | 大连理工大学 | Device and method for applying gas force to engine motion mechanism |
| CN110985155A (en) * | 2020-01-04 | 2020-04-10 | 潍坊力创电子科技有限公司 | Fully variable electro-hydraulic valve system |
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