WO2011072639A1 - Hydraulic arrangement - Google Patents
Hydraulic arrangement Download PDFInfo
- Publication number
- WO2011072639A1 WO2011072639A1 PCT/DE2010/001409 DE2010001409W WO2011072639A1 WO 2011072639 A1 WO2011072639 A1 WO 2011072639A1 DE 2010001409 W DE2010001409 W DE 2010001409W WO 2011072639 A1 WO2011072639 A1 WO 2011072639A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic
- valve
- conveyor
- supply
- arrangement according
- Prior art date
Links
Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30585—Assemblies of multiple valves having a single valve for multiple output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
- F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using valves
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/61—Secondary circuits
- F15B2211/611—Diverting circuits, e.g. for cooling or filtering
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Definitions
- the invention relates to a hydraulic system comprising: a hydraulic conveyor for conveying a hydraulic medium; a Hubverstell insightful for varying the delivery stroke of the hydraulic conveyor; a drive motor for the hydraulic conveyor; at least one valve device, which is connected between a first and a second supply area.
- a vane pump with adjustable delivery volume and with at least one actuating means is known, through which the delivery volume is temperature-dependent adjustable.
- the adjusting means can be represented by the speed of the electric motor which drives the vane pump.
- the object of the invention is to improve the supply of the two service areas in a hydraulic system according to the preamble of claim 1, in particular with regard to the power consumption and / or the manufacturing costs.
- the object is in a hydraulic system comprising: a hydraulic conveyor for conveying a hydraulic medium; a Hubverstell Nur for varying the delivery stroke of the hydraulic conveyor; a drive motor for the hydraulic conveyor; at least one valve device, which is connected between a first and a second supply region, achieved in that the Hubverstell Marie comprises a hydraulic active surface which is acted upon by the output pressure of the hydraulic conveyor to the delivery stroke of the hydraulic conveyor in dependence on the output pressure of the hydraulic conveyor to regulate.
- the delivery stroke is hydraulically coupled to the load pressure of the pump.
- a preferred embodiment of the hydraulic system is characterized in that the hydraulic active surface is designed and supplied with the output pressure of the hydraulic conveyor that the delivery stroke with increasing output pressure gets smaller.
- the reduction of the delivery stroke can take place continuously, abruptly or with a so-called offset.
- a further preferred embodiment of the hydraulic arrangement is characterized in that the first service area is acted upon by a relatively high hydraulic pressure and the second service area is subjected to a relatively low hydraulic pressure.
- the first supply area includes, for example, an actuator of a clutch with a rather small delivery volume, which is, however, subjected to a high pressure or high pressure.
- the second service area includes, for example, at least one clutch cooling and possibly a transmission sump cooling. For the cooling function, a rather large delivery volume with a low pressure is needed.
- valve device comprises a supply valve which is designed as a 3/3-way valve or as a 4/3-way valve with a connection for the hydraulic conveyor.
- the supply valve possibly with the interposition of other valves, connected to the supply areas.
- a further preferred embodiment of the hydraulic system is characterized in that the supply valve is connected between the hydraulic delivery device and a storage charging valve for a hydraulic accumulator in the first supply region.
- the hydraulic accumulator can be filled with hydraulic medium, which acts on the relatively high hydraulic pressure. From the hydraulic accumulator can be supplied with hydraulic medium at least one consumer in the first supply area, for example, the previously mentioned actuators for the clutch, which is acted upon by the high hydraulic pressure.
- a further preferred embodiment of the hydraulic arrangement is characterized in that the supply valve is connected between the hydraulic conveyor and the second supply area.
- the hydraulic conveyor is permanently connected to the accumulator charging valve.
- a further preferred embodiment of the hydraulic arrangement is characterized in that a prioritization valve between the supply valve and the second is switched supply range.
- the prioritization valve is designed, for example, as a 3/2-way valve, via the two different consumers, for example, two different clutch cooling, in the second supply area depending on demand different amounts of cooling oil can be supplied.
- Another preferred embodiment of the hydraulic system is characterized in that the prioritization valve is controlled by a hydraulic signal of a clutch. This can be ensured in a simple manner that, for example, a closed clutch more cooling oil is supplied as an open clutch.
- a further preferred embodiment of the hydraulic system is characterized in that the drive motor for the hydraulic conveyor is designed as a speed-controlled electric motor. By the load pressure-dependent control of the delivery stroke of the hydraulic conveyor, the load of the drive motor can be reduced during operation.
- a further preferred embodiment of the hydraulic arrangement is characterized in that the hydraulic conveyor is designed as a wing row pump with an adjustable cam ring.
- the vane pump includes a rotor having at least one vane rotatably disposed within the adjustable cam ring. By adjusting the cam ring relative to the rotor, the delivery stroke of the vane pump can be varied.
- FIG. 1 to 4 different embodiments of a hydraulic system according to the invention in the form of a hydraulic circuit diagram.
- FIGS. 1 to 4 show a hydraulic arrangement according to the invention in the form of a hydraulic circuit diagram in four different exemplary embodiments.
- the hydraulic system comprises a tank 1 from which hydraulic medium is drawn in through a hydraulic conveyor 5 with the interposition of a filter 2 and a cooler 3.
- the hydraulic conveying device 5 is designed, for example, as a vane pump and is replaced by a NEN drive motor 4 driven.
- the drive motor 4 is a variable-speed electric motor, as indicated by an arrow through an electric motor symbol.
- the stroke volume or delivery volume of the hydraulic conveyor 5 can be varied or adjusted by a Hubverstell listening 8.
- the Hubverstell sexual 8 includes, for example, an adjustable cam ring, within which a rotor is rotatably arranged with at least one wing. Via a hydraulic line 7, the Hubverstell listening 8 is acted upon by the output pressure of the hydraulic conveyor 5. This output pressure is also referred to as a load pressure and acts on a hydraulic active surface 10 of a piston 9 Hubverstell listening 8.
- the delivery stroke of the hydraulic conveyor 5 can be adjusted, as indicated by an arrow, extending through the pump symbol of the hydraulic conveyor 5 extends therethrough.
- the hydraulic arrangement illustrated in FIGS. 1 to 4 comprises a first supply area 11 and a second supply area 12.
- the first supply area 11 is supplied with hydraulic medium via a storage charging valve 14, which is subjected to a relatively high hydraulic pressure.
- a hydraulic accumulator 15 in the first supply area 11 can be supplied with hydraulic medium, which is acted on by the high hydraulic pressure.
- an actuator 16 of a clutch arrangement can be activated or actuated, which comprises, for example, two clutches.
- the second supply region 12 comprises a first clutch cooling 18 and a second clutch cooling 19.
- the second supply region 12 further comprises a transmission sump cooling 20, which, like the two clutch coolers 18, 19, is indicated only by an arrow .
- a transmission sump cooling 20 which, like the two clutch coolers 18, 19, is indicated only by an arrow .
- the hydraulic medium used in the hydraulic arrangement according to the invention is, for example, oil.
- the delivery volume or displacement may be rather small, for example for the high-pressure tion of the first supply area 11 with a low delivery volume, or rather be large, in particular for the cooling function in the second supply area 12 with low pressure.
- the hydraulic medium conveyed by the hydraulic conveying device 5, in particular oil, is supplied via a supply valve 25 to either the first supply region 11 or the second supply region 12.
- the supply valve 25 is designed as a 3/3-way valve, which is biased by a spring 26 in its illustrated in Figures 1 and 2 position.
- the first clutch cooling 18 is connected via the supply valve 25 to the output of the hydraulic conveyor 5 in connection.
- the second clutch cooling 19 of the second supply area 12 and the first supply area 11 are not connected to the hydraulic conveyor 5 in connection.
- the transmission sump cooling 20 is connected via the supply valve 25 to the output of the hydraulic conveyor 5 in combination.
- the two clutch coolers 18, 19 of the second supply area 12 and the first supply area 11 are not connected to the hydraulic conveyor 5 in connection.
- the supply valve 25 can be switched against the biasing force of the spring 26 in one of its two other positions.
- the control of the supply valve 25 can be effected by an electromagnet or via a hydraulic pilot circuit.
- a prioritization valve 30 with the hydraulic conveyor 5 in combination.
- the third switching position arranged on the left in FIGS. 1 and 2, only the first supply region 11 is in communication with the hydraulic conveying device 5 via the supply valve 25.
- both supply regions 11 and 12 are supplied with hydraulic medium via the supply valve 25.
- the transmission sump cooling 20 is connected to a connection of the supply valve 25.
- the transmission sump cooling 20 communicates with the hydraulic delivery device 5.
- the prioritization valve 30 connected as 3/2 Directional valve is executed. By arrows in different strength is indicated that the clutch cooling 18, 19 via the prioritization valve 30 different sized hydraulic medium flow rates can be supplied.
- the prioritization valve 30 is biased by a spring 31 into a switching position, in which the first clutch cooling 18, a larger hydraulic medium flow is supplied as the second clutch cooling 19.
- a larger hydraulic medium flow is supplied as the second clutch cooling 19.
- the actuation of the prioritization valve 30 takes place, for example, hydraulically via a hydraulic control line, which starts from the actuator 16 or one of the clutches.
- a supply valve 35 is connected between the hydraulic delivery device 5 or the accumulator charge valve 14 and the second supply region 14.
- the accumulator charging valve 14 is directly connected to the output of the hydraulic conveyor 5 in connection.
- the supply valve 35 is designed as a 3/3-way valve and biased by a spring 36 in its switching position shown in Figures 3 and 4.
- the switching of the supply valve 35 can, as indicated by an arrow 37, hydraulically via a control pressure line of one of the clutches or the actuators 16 done.
- a prioritization valve 30, which corresponds to the prioritization valve 30 in FIG. 2, is connected between the two clutch coolers 18, 19 and the supply valve 35. Identical parts will be the same Reference numeral used. To avoid repetition, reference is made to the description of the prioritization valve 30 to the above description of Figure 2.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010004790T DE112010004790A5 (en) | 2009-12-14 | 2010-12-02 | HYDRAULIC ARRANGEMENT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009058252 | 2009-12-14 | ||
DE102009058252.5 | 2009-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011072639A1 true WO2011072639A1 (en) | 2011-06-23 |
Family
ID=43805641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2010/001409 WO2011072639A1 (en) | 2009-12-14 | 2010-12-02 | Hydraulic arrangement |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE112010004790A5 (en) |
WO (1) | WO2011072639A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015086009A1 (en) | 2013-12-09 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Hydraulic arrangement for a dual clutch and method for actuating or cooling the dual clutch |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015219872A1 (en) * | 2015-10-14 | 2017-04-20 | Bayerische Motoren Werke Aktiengesellschaft | Device for conveying a hydraulic fluid |
DE102017217552A1 (en) * | 2017-10-02 | 2019-04-04 | Deere & Company | Hydraulic arrangement |
DE102018210471B3 (en) * | 2018-06-27 | 2019-09-05 | Robert Bosch Gmbh | Hoist suspension and hoist |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19848310A1 (en) * | 1997-10-15 | 1999-04-29 | Komatsu Mfg Co Ltd | Displacement volume control method for hydraulic pump in construction machine |
DE10223466A1 (en) | 2001-05-31 | 2002-12-05 | Luk Automobiltech Gmbh & Co Kg | Pump especially for lubricating oil of internal combustion engines has means by which output volume is adjustable dependent upon temperature |
DE10234621A1 (en) * | 2002-07-29 | 2004-02-19 | Zf Lenksysteme Gmbh | Regulator for variable vane cell pump for use in vehicle power steering systems, has pressure limiting for pressure side supply connection integrated into pump actuator control to reduced transport quantity depending on limiting pressure |
FR2890421A1 (en) * | 2005-09-06 | 2007-03-09 | Peugeot Citroen Automobiles Sa | Pressurized hydraulic fluid supply device for motor vehicle, has restriction disposed between intake point and check valve to limit fluid flow in branch, where restriction is calibrated such that rate in branch is lesser than preset value |
DE102007051525A1 (en) * | 2007-10-29 | 2009-04-30 | Sauer-Danfoss Gmbh & Co Ohg | Hydraulic supply system with a variable displacement pump device |
-
2010
- 2010-12-02 WO PCT/DE2010/001409 patent/WO2011072639A1/en active Application Filing
- 2010-12-02 DE DE112010004790T patent/DE112010004790A5/en not_active Withdrawn
- 2010-12-02 DE DE102010053258A patent/DE102010053258A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19848310A1 (en) * | 1997-10-15 | 1999-04-29 | Komatsu Mfg Co Ltd | Displacement volume control method for hydraulic pump in construction machine |
DE10223466A1 (en) | 2001-05-31 | 2002-12-05 | Luk Automobiltech Gmbh & Co Kg | Pump especially for lubricating oil of internal combustion engines has means by which output volume is adjustable dependent upon temperature |
DE10234621A1 (en) * | 2002-07-29 | 2004-02-19 | Zf Lenksysteme Gmbh | Regulator for variable vane cell pump for use in vehicle power steering systems, has pressure limiting for pressure side supply connection integrated into pump actuator control to reduced transport quantity depending on limiting pressure |
FR2890421A1 (en) * | 2005-09-06 | 2007-03-09 | Peugeot Citroen Automobiles Sa | Pressurized hydraulic fluid supply device for motor vehicle, has restriction disposed between intake point and check valve to limit fluid flow in branch, where restriction is calibrated such that rate in branch is lesser than preset value |
DE102007051525A1 (en) * | 2007-10-29 | 2009-04-30 | Sauer-Danfoss Gmbh & Co Ohg | Hydraulic supply system with a variable displacement pump device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015086009A1 (en) | 2013-12-09 | 2015-06-18 | Schaeffler Technologies AG & Co. KG | Hydraulic arrangement for a dual clutch and method for actuating or cooling the dual clutch |
Also Published As
Publication number | Publication date |
---|---|
DE112010004790A5 (en) | 2012-09-20 |
DE102010053258A1 (en) | 2011-06-16 |
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