CN105378298B - Hydraulic system - Google Patents
Hydraulic system Download PDFInfo
- Publication number
- CN105378298B CN105378298B CN201480038144.4A CN201480038144A CN105378298B CN 105378298 B CN105378298 B CN 105378298B CN 201480038144 A CN201480038144 A CN 201480038144A CN 105378298 B CN105378298 B CN 105378298B
- Authority
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- China
- Prior art keywords
- pressure
- valve
- clutch
- hydraulic system
- pressure limiting
- 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.)
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Links
- 230000002706 hydrostatic effect Effects 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 11
- 230000006837 decompression Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 6
- 210000000038 chest Anatomy 0.000 description 10
- 238000007789 sealing Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 241000009298 Trigla lyra Species 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D48/0206—Control by fluid pressure in a system with a plurality of fluid-actuated clutches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0209—Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0221—Valves for clutch control systems; Details thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic system having a pressure-limiting valve with a limiting pressure which can be increased by operation. The invention is characterized in that the pressure limiting valve is combined with means for providing an additional pressure reducing function.
Description
Technical field
The present invention relates to a kind of hydraulic system with pressure limiting valve, the pressure limiting valve has limiting pressure, the limit pressure
Power can be operable to improve.The invention further relates to a kind of method for running this hydraulic system.
Background technology
Become known for determining equipment and the side of motor limitation voltage from the A2 of International publication WO 2007/054051
The clutch actuator of method, wherein automatic shifting transmission keeps not moving.From German laid-open document DE 10 2,012 202
Become known for operating the hydraulic means with motor and hydraulic pump of clutch in 162 A1, wherein in order to which clutch is kept
Valve can be provided with target location, once clutch reaches target location, the valve is with regard to the liquid between canned pump and clutch
Line ball road.A kind of known hydrostatic clutch with gear pump, described from the C2 of Germany Patent document DE 30 04 581
Clutch at least arranges limited valve in order to avoid torque peak.
The content of the invention
The purpose of the present invention is：Improve the runnability and/or response performance of the hydraulic system with pressure limiting valve, the limit
Pressure valve has limiting pressure, and the limiting pressure can be operable to improve.
The purpose is realized in the following way in the hydraulic system with pressure limiting valve：By pressure limiting valve with for provide it is additional
Decompression device combination, wherein the pressure limiting valve has limiting pressure, the limiting pressure can be operable to carry
It is high.When meeting or exceeding limiting pressure, normally open pressure limiting valve.The additional decompression of pressure limiting valve is realized to be less than in pressure
Pressure limiting valve is opened in the case of limiting pressure.Thus in a straightforward manner with method in order to which diagnostic purpose realizes beating for pressure limiting valve
Open.Furthermore it is possible to the system pressure in hydraulic system is rapidly reduced by additional decompression, even if system pressure is less than
It is also such during limiting pressure.
One preferred embodiment of hydraulic system is characterised by：Device for providing additional decompression has
Pressure-reduction outlet.Pressure can be reduced in low pressure range or is reduced to the pressure in reservoir via pressure-reduction outlet.
Another preferred embodiment of hydraulic system is characterised by：Pressure-reduction outlet is set between the two seals.Decompression
Therefore mouth is equally formed with the passage in the clutch master cylinder of routine or is similarly formed therewith.
Another preferred embodiment of hydraulic system is characterised by：Pressure-reduction outlet can be closed by valve piston.Valve piston
Annular chamber is defined in inner radial, the annular chamber is in axial direction by two seal gauges.In radially outer, annular chamber by
Valve chest gauge, the valve chest have pressure-reduction outlet.
Another preferred embodiment of hydraulic system is characterised by：Valve piston is tightened to closing position in advance by closing spring
In, pressure-reduction outlet is closed in the closing position.Closing position limits advantageous by stopper section, and valve piston is in closing position
Middle backstop is on the stopper section.
Another preferred embodiment of hydraulic system is characterised by：Actuator is associated with valve piston, and valve piston passes through institute
Actuator is stated to be maintained in its closing position by additional power.The additional power being applied on valve piston can for example pass through electricity
Or actuator that electronics is hydrostatic apply.
Another preferred embodiment of hydraulic system is characterised by：Valve piston can be in closure stopper section and opening backstop
Moved back and forth between portion, the opening stopper section limits open position, and pressure-reduction outlet is discharged by valve piston in the open position.
The extreme position of the restriction of valve piston can be provided with method in a straightforward manner by the two stopper sections.
Another preferred embodiment of hydraulic system is characterised by：Pressure limiting valve is associated with separating clutch, the separation
Clutch is operated by hydrostatic clutch actuator.Separation clutch is preferably hybrid separation clutch, the mixing
Formula separates clutch and operated by hydrostatic clutch actuator, that is, opens and/or close.In hybrid separation clutch
In, made a distinction sliding to start between (Schlupfstart) and pulse startup (Impulsstart).When pulse starts,
Start internal combustion engine using the rotary pulse (Drehimpuls) of motor.But this needs following feasibility：Separate clutch pole
It is rapidly closed.Herein, it is favourable to be turned out to be according to the pressure limiting valve of the present invention.According to the pressure limiting valve of the present invention simultaneously
It can be opened by hydrostatic clutch actuator is operated, to reduce system pressure more quickly.Thus significantly change
Enter the pulse startability of the separation clutch closed automatically.
Another preferred embodiment of hydraulic system is characterised by：Pressure limiting valve is associated with the clutch system of hydrostatic operation
The hydrostatic circuit of system.The clutch system of hydrostatic operation is preferably the double clutch system of hydrostatic operation, described double
Clutch system has two hydrostatic circuits, two sub- clutch circuits for hydrostatic operation double clutch.Advantageously,
The hydrostatic circuit is equipped with a pressure limiting valve circuit according to the present invention respectively.The sub- clutch of double clutch system is preferred
Directly via hydrostatic line loop operation.For the purpose, the piston of master cylinder can be electrically adjusted.Slave cylinder is via hydrostatic
An operation in circuit.The piston of slave cylinder preferably directly acts on clutch plate herein, by means of the clutch plate
Clamp the clutch plate of sub- clutch and then realize the sub- clutch transmission by torque via closure.When sub- clutch is opened, in advance
Tight spring can overcome the piston effect of slave cylinder and for keeping the minimum fluid pressure in hydrostatic operation system.Sub- clutch
Device generally closes as required, so as to transmit required torque.Pass through electrically operated pressure limiting valve, it is possible to increase pole
Limits pressure so that corresponding hydrostatic circuit sealing is also kept in the case of operating pressure maximum.Thus it is advantageously real
The self-retaining function of the double clutch system of hydrostatic operation is now provided.In the case of electrically operated device failure, such as can
Ensured in a straightforward manner with method by appropriate spring pre-tightening：Corresponding pressure limiting valve or the two pressure limiting valves are trouble-freely beaten
Open.Thereby, it is possible to realized in a straightforward manner with method：One or more pressure limiting valves are only opened in case of a fault.Thus, example
Such as in the case where valve is configured to guiding valve, the undesirable dirt at the valve seat of pressure limiting valve can be avoided.With valve piston
In the embodiment of valve, dirt is not contemplated.It is especially advantageous by the design according to the present invention of one or more pressure limiting valves
Additionally realize diagnostic function.In the state of pressure limiting valve does not operate, preferably in the state of electrically operated pressure limiting valve no power,
Valve piston is advantageous by closing spring consumingly pretension so that valve piston regularly reclines closure stopper section.Pressure-reduction outlet is closed.
When pressure rises, in the state of the do not operate or no power of pressure limiting valve, system pressure is enough to open valve piston through over-subtraction
Mouth is pressed, so as to the extremely rapidly pressure in reduction system.Thereby, it is possible to provide what is automatically opened up with method in a straightforward manner
Clutch system.
The present invention also relates to a kind of method for running above-mentioned hydraulic system.The method according to the invention is with simple side
Formula and method, which realize, provides a kind of clutch system of hydrostatic operation, especially double clutch system, and it has and can diagnosed
Automatic holding function.
Lifted for the superpressure activation threshold value of limiting pressure for example, by electrically operated device so that in normal operation not
Open one or more pressure limiting valves.In normal operation, one or more pressure limiting valves reliably seal for example, by electrically operated device
Firmly.During central power operation device, the pressure limiting valve so sealed is advantageously only opened in case of a fault.Pass through one or more
The diagnostic function described before is especially advantageously realized in the design according to the present invention of pressure limiting valve.
Brief description of the drawings
The present invention other features, advantage and details draw from the following description, the refer to the attached drawing in the description
Describe different embodiments in detail.It shows：
Fig. 1 has the diagram of the extreme facility of the double clutch system of the hydrostatic operation of two hydrostatic circuits, described
Circuit has the pressure limiting valve of two electric control；
Fig. 2 shows the diagram similar with Fig. 1, and two of which pressure limiting valve is controlled by common electric valve actuator；
Fig. 3 shows to have the simplification figure of the pressure limiting valve according to the present invention of the valve piston in closing position, and
Fig. 4 shows to have the pressure limiting valve in Fig. 3 of the valve piston in open position.
Embodiment
The double clutch of hydrostatic operation with two hydrostatic circuits 11,12 is shown extreme facility in fig 1 and 2
System 10.Hydrostatic circuit 11,12 is used for (unshowned) sub- clutch of directly operating dual clutch device.Hydrostatic circuit
11st, 12 a clutch slave cylinder is connected with a clutch master cylinder respectively.
Piston is provided with clutch master cylinder, the piston is electrically adjusted.The regulation fortune of the piston of clutch master cylinder
It is dynamic to be delivered to via hydraulic medium, such as hydraulic oil by underground 11,12 on the affiliated piston of clutch slave cylinder.Clutch
The piston of device slave cylinder is advantageously applied directly on the clutch plate of corresponding sub- clutch.
Every sub- clutch is equipped with clutch plate and clutch plate from the connection of different transmission input shafts.In sub- clutch
When device is opened, piston effect of the preloading spring against corresponding slave cylinder.Ensured by preloading spring：In underground 11,12
Middle holding minimum hydraulic pressure.Sub- clutch by master cylinder motorized adjustment piston advantageously only close as needed, so as to
Required torque can be transmitted.
The motorized adjustment of master cylinder piston realizes via YE, the actuator due to relatively high gearratio and with
Self-sustaining mode is formed.Due to self-sustaining, sub- clutch is not automatically turned in electric part fails.For the reason of safety
By therefore, two hydrostatic circuits are equipped with control device, the control respectively in the double clutch operating system of routine
Equipment includes two processors.Ensured by the two control devices：Even if a YE works as another electronic execution
It can also be opened when device is no longer made a response.Thus, it is possible to prevent the undesirable clamping in speed changer.
It is relatively expensive using two equivalent control devices.In addition, in the double clutch system of routine, even in
The electric actuator system accordingly to work is only also opened in the case of using two equivalent control devices.
The two hydrostatic circuits 11,12 are equipped with a pressure limiting valve 15,16 respectively；25、26.Via pressure limiting valve 15,
16；25th, 26, the superpressure in underground 11,12 can be reduced in bank 17,18 or in bank 28.
Shown in Fig. 1 by the symbol 21,22 for the spring for representing pretension：When more than passing through the default value of initial tension of spring
When, pressure limiting valve 15,16 is opened.By initial tension of spring 21,22 setting limit pressure, when overstepping the extreme limit pressure in failure situation
Lower opening pressure limiting valve 15,16.
Shown by other symbol 23,24：The limiting pressure set by means of spring 21,22 can be performed by electric valve
Device improve into so that in the case that pressure is substantially beyond limiting pressure set by spring 21,22 also keep divide
The hydrostatic circuit 11,12 of dispensing pressure limiting valve 15,16 closes.
Can be by means of electric valve actuator 23,24 with letter by appropriate control strategy (such as when valve is configured to guiding valve)
Single mode is realized：Pressure limiting valve 15,16 is only opened in case of a fault.Thus advantageously avoid：Pollution is configured to the limit of seat valve
The valve seat of pressure valve 15,16.This dirt (pollution) can damage the closure function of pressure limiting valve 15,16.In piston embodiment
In valve, pollution is not contemplated.
Pressure limiting valve 15,16 is configured to pressure override valve, and the pressure override valve is for example in pole set by spring 21,22,4bar
Opened in the case of limits pressure.The limiting pressure corresponds to the system pressure when opening sub- clutch, and the system pressure leads to
Cross the holding of chip type spring prestressing force.
Relatively small limiting pressure realizes the application of the seal of flexible relative.Hereby it is achieved that relatively large tolerance, such as
+/- 1bar tolerance, this corresponds to 25%.Electric valve actuator 23,24 sheet in the case of the relatively low superpressure activation threshold value
Body is not yet powered.When electric valve actuator 23,24 is powered, the superpressure activation threshold value is lifted, until more than maximum system pressure.
Can be advantageously in hydrostatic circuit 11,12 by the control electronic installation with electric actuator 23,24
Pressure limiting valve 15,16 has been operated before pressure rise.Advantageously when the decompression in hydrostatic circuit 11,12, just take again
Disappear the electrically operated of actuator 23,24.It is advantageously carried out by control strategy：Pressure limiting valve 15,16 is normal in double clutch system 10
Never opened in operation.
Shown in fig. 2 by a rectangle represented and two symbols 31,32：Two pressure limiting valves 25,26 can also combine
In common valve gear 27.
Pass through the appropriate of the circuit control piper between the master cylinder and slave cylinder that are connected to each other via hydrostatic circuit 11,12
Guiding, can by for keep valve common valve gear 27 be configured to so that by double clutch sub- clutch this two
The only one valve of individual control piper can be operated.This is provided the advantage that：As shown in Fig. 2 by symbol 31,32, it is only necessary to
Want a spring and an electric valve actuator.In addition, common valve gear 27 is only connected with a bank 28.
According to another aspect of the present invention, electric actuator 23,24；32 are formed for operating pressure limiting valve as piezo actuator
15、16；25th, 26 or 27.Piezo actuator provides the advantage that：It, which merely has to be energized to actuator, is fully in tensile force
Under.
Simplifiedly show in figures 3 and 4 with the apparatus according to the invention 42 for being used to provide additional decompression
Pressure limiting valve 40.Device 42 includes the pressure-reduction outlet 44 in the valve chest 45 of pressure limiting valve 40.
Low pressure into low pressure range or in reduction reservoir can will be depressurized via pressure-reduction outlet 44, the reservoir adds
It is loaded with low pressure or environmental pressure.Valve chest 45 also includes entering opening 46, and system pressure is applied to described enter in opening.System
Pressure is, for example, following pressure, and the pressure is located in the hydrostatic circuit 11, one of 12 of the hydraulic system shown in Fig. 1 and 2.
Valve chest 45 includes accommodating chamber 48, and valve piston 50 accommodates in a manner of energy is reciprocating in the accommodating chamber.With
Similar mode, valve piston 50 are equipped with two seals 51,52 in a manner of similar in the master cylinder with passage.Sealing
Part 51,52 is axially fixed in valve chest 45.
Here, seal 51,52 is configured to annular seal, the annular seal has sealing lip in inner radial, described
Sealing lip reclines valve piston 50 as seen in Figure 3.The in axial direction gauge annular chamber 53 of seal 51,52, the annular
Chamber is in inner radial by the gauge of valve piston 50.In radially outer, annular chamber 53 is by the gauge of valve chest 45.Pressure-reduction outlet 44 starts from described
Annular chamber 53.
Valve piston 50 by closing spring 55 its figure 3 illustrates closing position in pretension.In closing position, valve
For piston 50 with the upper end backstop in its Fig. 3 and 4 on closure stopper section 56, the closure stopper section is formed in valve chest 45
On.Opened here, closing spring 55 is supported on stopper section 58, the opening stopper section is similarly disposed on valve chest 45.Valve
Piston 50 in the axial direction, i.e. can be transported back and forth between the two stopper sections 56 and 58 up and down in figures 3 and 4
It is dynamic.
Figure 3 illustrates closing position in, piston valve 50 close pressure-reduction outlet 44.In Fig. 4, in the open position of valve piston
Valve piston 50 is shown in putting.In the open position, valve piston release is entering the connection between opening 46 and pressure-reduction outlet 44,
Make it possible to reduce pressure via pressure-reduction outlet 44, such as shown in Fig. 4 by arrow 59.
Valve piston 50 is electrically operated by actuator 60.When being powered to actuator 60, by actuator 60 by Fig. 3 and 4
The power pointed up is applied on valve piston 50.The power acts on being additional to the closing force of closing spring 55.
When actuator 60 is accessed in a manner of cold, then actuator 60 is not exerted a force on valve piston 50.
In the state of the no power of actuator 60, valve piston 50 is consumingly tightened in its closing position in advance by closing spring 55 so that valve
Piston 50, which regularly reclines, closure stopper section 56 and closes pressure-reduction outlet 44.
Entering at opening 46 in the case of pressure rising, valve piston 50 must be by the actuator 60 of energization by additional
Power be positively retained in closure stopper section 56 on.When a failure occurs, it is enough to open valve into the system pressure at opening 46
Piston 50 passes through pressure-reduction outlet 44 so that system pressure extremely can rapidly decline.Opening stopper section 58 protects pressure limiting valve 40 to exempt from
Influenceed as follows：Valve piston 50, which moves downwardly to, causes hydraulic medium to be discharged at the seal 52 of bottom.
When being run according to the pressure limiting valve 40 of the present invention, in the case where entering the system pressure height at opening 46 in order to examine
It is disconnected that actuator 60 can be accessed in a manner of cold, to check that whether as desired decline via pressure of pressure opens
Mouth 44 declines.In the case where valve piston 50 is fixed, this can be stored in the fault memorizer of control device and show.
Reference numerals list
10 double clutch systems
11 hydrostatic circuits
12 hydrostatic circuits
15 pressure limiting valves
16 pressure limiting valves
17 banks
18 banks
21 symbols
22 symbols
23 symbols
24 symbols
25 pressure limiting valves
26 pressure limiting valves
27 valve gears
28 banks
31 symbols
32 symbols
40 pressure limiting valves
42 devices
44 pressure-reduction outlets
45 valve chests
46 enter opening
48 accommodating chambers
50 valve pistons
51 seals
52 seals
53 annular chambers
55 closing springs
56 closure stopper sections
58 open stopper section
59 arrows
60 actuators
Claims (7)
1. one kind has the hydraulic system of pressure limiting valve (40), the pressure limiting valve has limiting pressure, and the limiting pressure can lead to
Operation is crossed to improve,
Characterized in that, the pressure limiting valve (40) is combined with the device (42) for providing additional decompression, it is described to be used for
There is provided the device (42) of additional decompression has a pressure-reduction outlet (44), the pressure-reduction outlet (44) be arranged on two seals (51,
52) between, the seal is configured to annular seal, and the annular seal can recline valve piston (50) in inner radial, make
Obtaining the pressure-reduction outlet (44) can be closed by the valve piston (50).
2. hydraulic system according to claim 1, it is characterised in that the valve piston (50) is pre- by closing spring (55)
It is tightened in closing position, the pressure-reduction outlet (44) described in the closing position is closed.
3. hydraulic system according to claim 2, it is characterised in that actuator (60) is associated with the valve piston (50),
The valve piston (50) is maintained in the closing position of valve piston by the actuator by means of additional power.
4. hydraulic system according to claim 1, it is characterised in that the valve piston (50) can be in closure stopper section
(56) moved back and forth between opening stopper section (58), the opening stopper section limits open position, in the open position
The pressure-reduction outlet (44) is discharged by the valve piston (50).
5. hydraulic system according to any one of claim 1 to 4, it is characterised in that the pressure limiting valve (40) is associated with
Clutch is separated, the separation clutch is operated by hydrostatic clutch actuator.
6. hydraulic system according to any one of claim 1 to 4, it is characterised in that the pressure limiting valve (40) is associated with
The hydrostatic circuit of the clutch system of hydrostatic operation.
7. one kind is used for the side for running the hydraulic system according to any one of claim 1 to 6 with pressure limiting valve (40)
Method.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013214428 | 2013-07-24 | ||
| DE102013214428.8 | 2013-07-24 | ||
| PCT/DE2014/200312 WO2015010696A2 (en) | 2013-07-24 | 2014-07-10 | Hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105378298A CN105378298A (en) | 2016-03-02 |
| CN105378298B true CN105378298B (en) | 2017-11-17 |
Family
ID=51392021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480038144.4A Active CN105378298B (en) | 2013-07-24 | 2014-07-10 | Hydraulic system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105378298B (en) |
| DE (2) | DE112014003435B4 (en) |
| WO (1) | WO2015010696A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12011075B2 (en) | 2016-04-08 | 2024-06-18 | L'oreal | Process for manufacturing a false nail |
| DE102016119416A1 (en) * | 2016-10-12 | 2018-04-12 | Linde Hydraulics Gmbh & Co. Kg | Pressure relief valve of a hydrostatic drive system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815697A (en) * | 1988-04-22 | 1989-03-28 | General Electric Company | Depressurization valve |
| DE29807005U1 (en) * | 1998-04-18 | 1998-07-09 | Drägerwerk AG, 23558 Lübeck | Pressure relief valve for flowing media |
| US6234290B1 (en) * | 1998-08-06 | 2001-05-22 | Mannesmann Sachs Ag | Actuating installation for pneumatic clutch actuation with overload protection and/or incorrect-operation protection |
| CN1809697A (en) * | 2003-06-17 | 2006-07-26 | 奥特宁豪斯工厂有限责任公司 | Hydraulic circuit |
| CN201232669Y (en) * | 2008-07-30 | 2009-05-06 | 中江佳通印刷机械有限公司 | Single-single double hydraulic system for paper cutter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3004581A1 (en) * | 1980-02-08 | 1981-08-13 | Klöckner-Humboldt-Deutz AG, 5000 Köln | HYDROSTATIC CLUTCH |
| FI72931C (en) * | 1984-05-22 | 1987-08-10 | Valmet Oy | Damping valve for the clutch in a tractor's PTO shaft. |
| WO2003008828A1 (en) * | 2001-07-19 | 2003-01-30 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | System for controlling a component of a gearbox in a vehicle by taking into account fluid loss |
| EP1948952B1 (en) | 2005-11-11 | 2009-03-25 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Method for the determination of a voltage limit of a clutch actuating motor |
| DE112012000961B4 (en) | 2011-02-23 | 2023-07-20 | Schaeffler Technologies AG & Co. KG | Hydraulic device for actuating a clutch |
-
2014
- 2014-07-10 DE DE112014003435.5T patent/DE112014003435B4/en active Active
- 2014-07-10 WO PCT/DE2014/200312 patent/WO2015010696A2/en active Application Filing
- 2014-07-10 CN CN201480038144.4A patent/CN105378298B/en active Active
- 2014-07-10 DE DE102014213453.6A patent/DE102014213453A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815697A (en) * | 1988-04-22 | 1989-03-28 | General Electric Company | Depressurization valve |
| DE29807005U1 (en) * | 1998-04-18 | 1998-07-09 | Drägerwerk AG, 23558 Lübeck | Pressure relief valve for flowing media |
| US6234290B1 (en) * | 1998-08-06 | 2001-05-22 | Mannesmann Sachs Ag | Actuating installation for pneumatic clutch actuation with overload protection and/or incorrect-operation protection |
| CN1809697A (en) * | 2003-06-17 | 2006-07-26 | 奥特宁豪斯工厂有限责任公司 | Hydraulic circuit |
| CN201232669Y (en) * | 2008-07-30 | 2009-05-06 | 中江佳通印刷机械有限公司 | Single-single double hydraulic system for paper cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112014003435A5 (en) | 2016-04-28 |
| CN105378298A (en) | 2016-03-02 |
| WO2015010696A3 (en) | 2015-03-26 |
| DE102014213453A1 (en) | 2015-01-29 |
| WO2015010696A2 (en) | 2015-01-29 |
| DE112014003435B4 (en) | 2020-06-18 |
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