EP2516860A2 - Hydraulic control - Google Patents

Hydraulic control

Info

Publication number
EP2516860A2
EP2516860A2 EP10808974A EP10808974A EP2516860A2 EP 2516860 A2 EP2516860 A2 EP 2516860A2 EP 10808974 A EP10808974 A EP 10808974A EP 10808974 A EP10808974 A EP 10808974A EP 2516860 A2 EP2516860 A2 EP 2516860A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
pump
control
pumps
control plate
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.)
Granted
Application number
EP10808974A
Other languages
German (de)
French (fr)
Other versions
EP2516860B1 (en
Inventor
Uwe Bastian
Marco Grethel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2516860A2 publication Critical patent/EP2516860A2/en
Application granted granted Critical
Publication of EP2516860B1 publication Critical patent/EP2516860B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • F04C14/065—Capacity control using a multiplicity of units or pumping capacities, e.g. multiple chambers, individually switchable or controllable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member

Definitions

  • the invention relates to a hydraulic control with a control plate assembly and with a hydraulic conveyor for conveying a hydraulic medium.
  • an oil supply (usually pump with pump drive) is necessary.
  • the pump drive is a mechanical pump drive, which is coupled to the combustion engine.
  • the object of the invention is to provide a simple way of supplying different supply areas with hydraulic medium.
  • the object is achieved in a hydraulic control with a control plate assembly and with a hydraulic conveyor for conveying a hydraulic medium, characterized in that the hydraulic conveyor is integrated in the control plate assembly.
  • the control plate assembly includes at least one control plate, which includes, for example, hydraulic channels and hydraulic connections for hydraulic valves.
  • the inventive placement of the hydraulic conveyor in the control plate assembly of the available space can be used optimally, since otherwise required hydraulic connections between the hydraulic control and the hydraulic conveyor can be omitted.
  • a preferred embodiment of the hydraulic control is characterized in that a first hydraulic pump is integrated in a first control plate of the control plate assembly.
  • the first hydraulic pump is used, for example, to supply an actuator system of a parallel shift transmission with hydraulic oil.
  • the actuator system is preferably equipped with a pressure accumulator which is filled or charged with the aid of the first hydraulic pump.
  • the first hydraulic pump preferably delivers a relatively low hydraulic medium volume flow, but with a relatively high pressure.
  • a second hydraulic pump is integrated in a second control plate of the control plate assembly.
  • the second hydraulic pump is used, for example, to supply a wet clutch with cooling medium, in particular cooling oil.
  • the second hydraulic pump provides a relatively large hydraulic medium flow rate, but with a relatively low pressure.
  • the two hydraulic pumps are driven by a single electric motor.
  • An otherwise required second electric motor for driving the second hydraulic pump can be omitted.
  • the electric motor is preferably mounted on the outside of the first control plate.
  • the two hydraulic pumps are preferably arranged completely in the two control plates of the control plate arrangement. Thus, no additional space, especially no housing needed for the hydraulic pumps.
  • the two hydraulic pumps are connected in series.
  • the two hydraulic pumps are preferably arranged adjacent to one another in the two control plates.
  • the hydraulic pumps are preferably arranged so that they have a common have same drive axis of rotation, which coincides with the drive axis of rotation of the electric motor.
  • the two hydraulic pumps are drivingly coupled to each other via a switchable coupling. Due to the switchable coupling, the two hydraulic pumps can be coupled to the electric motor so that they are simultaneously driven by the electric motor. If required, one of the hydraulic pumps can be decoupled from the electric motor by means of the switchable clutch. Then only one of the hydraulic pumps is driven by the electric motor. When the electric motor is switched off, then none of the hydraulic pumps is driven.
  • control plates are pump housings for the hydraulic pumps.
  • the two hydraulic pumps are designed as gear pumps, in particular external gear pumps. All pump gears of the two gear pumps are arranged in the control plates. The storage of the pump gears is also integrated in the control plates.
  • the two hydraulic pumps are driven by a common pump shaft.
  • the common pump shaft is, preferably via an Oldham coupling, coupled to the common electric motor, that is drivingly connected.
  • the Oldham coupling is preferably located at one end of the common pump shaft.
  • the shiftable clutch is preferably arranged at the other end of the common pump shaft.
  • the plummer block includes, for example, a plummer block sleeve which is fixedly connected to the first control plate, for example, is pressed into this, and in a receiving space for the second hydraulic pump protrudes, which is recessed in the second control plate.
  • Figure 1 shows a representation of a first section through a hydraulic control according to the invention with actuated clutch
  • FIG 3 shows the same section as in Figure 1 with non-actuated clutch.
  • a hydraulic control system 1 for a parallel shift transmission of a motor vehicle is shown in various sectional views and states.
  • the hydraulic control 1 comprises a control plate assembly 10 having a first control plate 11 and a second control plate 12. Between the two control plates 11 and 12, an intermediate plate 13 is arranged.
  • a hydraulic conveyor 14 is integrated, which includes a first hydraulic pump 15 and a second hydraulic pump 16.
  • the two hydraulic pumps 15, 16 are both driven by a single electric motor 18.
  • the electric motor 18 is attached to the side facing away from the second control plate 12 of the first control plate 11.
  • a receiving space for the hydraulic conveyor 14 in the two control plates 11, 12 is closed hydraulically sealed by a cover 19 with a corresponding seal.
  • the two hydraulic pumps 15, 16 are both driven by a common pump shaft 20 by the electric motor 18.
  • the common pump shaft 20 extends in the two control plates 11 and 12 through the intermediate plate 13 therethrough.
  • One end of the pump shaft 20 is rotatably connected via a Oldham- uptake 22 with a drive shaft of the electric motor 18.
  • Both hydraulic pumps 15, 16 are designed as external gear pumps, in which
  • Hydraulic medium in particular hydraulic oil, taken in tooth gaps and is conveyed along a Steuerplatteninnenwandung of a suction chamber to a pressure chamber.
  • the engagement of gear teeth prevents unwanted backflow of the hydraulic medium.
  • a negative pressure is created on one suction side and an overpressure on one pressure side.
  • the common pump shaft 20 is rotatably connected via a transverse pin 23 with a pump gear 24 of the first hydraulic pump 15.
  • the pump gear 24 driven by the pump shaft 20 meshes with another pump gear 28 of the first hydraulic pump 15.
  • the further pump gear 28 of the first hydraulic pump 15 is connected in a rotationally fixed manner to a pump shaft 30 by a further transverse pin 29.
  • the pump shaft 30, as well as the pump shaft 20, rotatably mounted in two bearing glasses 25, 26.
  • the two pump gears 24, 28 are mounted with the aid of the bearing glasses 25, 26 in the first control plate 11.
  • the two bearing glasses 25, 26 provide axial contact surfaces for the pump gears 24, 28 available.
  • For gap compensation at least one sealing ring is provided.
  • the second hydraulic pump 16 has a significantly lower pressure level than the first hydraulic pump 15 and is installed without bearing glasses directly between the intermediate plate 13 and the second control plate 12.
  • a pillow block 34 For storage of the second hydraulic pump 16 is a pillow block 34 which includes a plummer block sleeve which is fixed with one end in the first control plate 11.
  • the plummer block sleeve is preferably pressed into the control plate 11 and protrudes into a receiving space for the second hydraulic pump 16 in the second control plate 12.
  • a clutch 35 is provided, which via a toothing 36 at the end of the pump shaft 20 rotatably connected to the pump shaft 20 is connected.
  • the clutch 35 is by positive engagement, for example by two lugs, permanently rotatably connected to a pump gear 32 of the second hydraulic pump 16, even when not actuated clutch 35.
  • This has the advantage that at a non-actuation of the Clutch 35, so when the pump gear 32, and the clutch 35 and an associated sealing ring 37, which serves to seal a pressure chamber, no rotational movement and thus produces no power losses.
  • the clutch 35 does not need to be threaded into the pump gear 32 during each shift.
  • the pump gear 32 of the second hydraulic pump 16 meshes with another
  • the pillow block 39 comprises a plummer block sleeve, which is pressed with one end into the first control plate 11 and projects with the other end into the second control plate 12.
  • the clutch 35 is shown in the actuated state in which the pump shaft 20 via the transverse pin 23 drivingly connected to the pump gear 24 of the first hydraulic pump 15 and the actuated clutch 35 is drivingly connected to the pump gear 32 of the second hydraulic pump 16 ,
  • the clutch 35 is actuated via a hydraulic switching signal, which is transmitted via a hydraulic channel 40 hydraulically to the clutch 35.
  • the design of the two hydraulic pumps 15, 16 as external gear pumps provides advantages especially at low temperatures, since the external gear pumps then have lower power losses in comparison to other pump concepts.
  • the use of the Oldham coupling 22 provides the advantage that axial and radial misalignment between the drive shaft of the electric motor 18 and the pump shaft 20 can be compensated. Due to the complete integration of the two hydraulic pumps 16 and 15 in the control panel tenanowski 10 additional pump housing and otherwise required hydraulic lines can be completely eliminated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Transmission Device (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Jigs For Machine Tools (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention relates to a hydraulic control comprising a control plate assembly and a hydraulic transport device for transporting a hydraulic medium. The invention is characterised in that said hydraulic transport device is integrated into the control plate assembly.

Description

Hvdrauliksteuerung  Hvdrauliksteuerung
Die Erfindung betrifft eine Hydrauliksteuerung mit einer Steuerplattenanordnung und mit einer hydraulischen Fördereinrichtung zum Fördern eines Hydraulikmediums. The invention relates to a hydraulic control with a control plate assembly and with a hydraulic conveyor for conveying a hydraulic medium.
Bei Automatikgetrieben, wie beispielsweise Stufenautomaten, CVT-Getrieben oder Doppelkupplungsgetrieben, mit hydraulischer Steuerung, das heißt Aktoransteuerung, wie Kupplungsaktor- oder Schaltaktor-Steuerung, und Kühl-/ Schmierölversorgung ist eine Ölversorgung (zumeist Pumpe mit Pumpenantrieb) notwendig. Meist handelt es sich beim Pumpenantrieb um einen mechanischen Pumpenantrieb, der an den Verbrennungsmotor gekoppelt ist. In automatic transmissions, such as step machines, CVT transmissions or dual clutch transmissions, with hydraulic control, ie actuator control, such as clutch actuator or switch actuator control, and cooling / lubricating oil supply an oil supply (usually pump with pump drive) is necessary. In most cases, the pump drive is a mechanical pump drive, which is coupled to the combustion engine.
Bei modernen Getrieben kann dieser mechanische Pumpenantrieb um eine E-Pumpenanord- nung (das heißt Elektromotor mit Pumpe) ergänzt sein. In modern transmissions this mechanical pump drive can be supplemented by an E-pump arrangement (ie electric motor with pump).
Weiterhin sind Ölversorgungen bekannt, die für die Getriebe- und Kupplungsaktorik ohne mechanisch angetriebene Pumpe auskommen. Hier gibt es allerdings aufgrund der Bauart der Kupplung als Trockenkupplung keinen Kühlölbedarf. Furthermore, oil supplies are known that do not require a mechanically driven pump for the gear and Kupplungsaktorik. However, due to the design of the clutch as a dry clutch, there is no need for cooling oil here.
Soll auf einen mechanischen Antrieb gerade bei nass laufenden Kupplungen verzichtet werden, so muss bei den bekannten Systemen die hierfür erforderliche hydraulische Leistung komplett von der elektrisch angetriebenen Pumpe bereitgestellt werden. Die dabei auftretenden Betriebszustände sind aber sehr unterschiedlich. So sind sowohl Situationen mit hohem Volumenstrom- und geringem Druckbedarf als auch Situationen mit hohem Druck- und geringem Volumenstrombedarf gegeben. Diese vollständig verschiedenen Randbedingungen erfordern bei einer konventionellen E-Motor / Pumpen - Anordnung (drehzahlgeregelter Antrieb) sehr große E-Motoren (Kosten, Gewicht, Bordnetzbelastung), um die unterschiedlichen Betriebszustände in einem Ölversorgungssystem darzustellen. If a mechanical drive is to be dispensed with, in particular with wet-running clutches, the hydraulic power required for this purpose must be provided completely by the electrically driven pump in the known systems. However, the operating conditions occurring are very different. Thus, situations with high volume flow and low pressure requirements as well as situations with high pressure and low volume flow requirements are given. These completely different boundary conditions require in a conventional E-motor / pump arrangement (variable speed drive) very large electric motors (cost, weight, vehicle electrical system load) to represent the different operating conditions in an oil supply system.
Aufgabe der Erfindung ist es, auf einfache Art und Weise eine Versorgung von verschiedenen Versorgungsbereichen mit Hydraulikmedium zu ermöglichen. The object of the invention is to provide a simple way of supplying different supply areas with hydraulic medium.
Die Aufgabe ist bei einer Hydrauliksteuerung mit einer Steuerplattenanordnung und mit einer hydraulischen Fördereinrichtung zum Fördern eines Hydraulikmediums, dadurch gelöst, dass die hydraulische Fördereinrichtung in die Steuerplattenanordnung integriert ist. Die Steuerplattenanordnung umfasst mindestens eine Steuerplatte, die zum Beispiel Hydraulikkanäle und Hydraulikanschlüsse für Hydraulikventile umfasst. Durch die erfindungsgemäße Unterbringung der Hydraulischen Fördereinrichtung in der Steuerplattenanordnung kann der zur Verfügung stehende Bauraum optimal genutzt werden, da ansonsten erforderliche Hydraulikverbindungen zwischen der Hydrauliksteuerung und der hydraulischen Fördereinrichtung entfallen können. The object is achieved in a hydraulic control with a control plate assembly and with a hydraulic conveyor for conveying a hydraulic medium, characterized in that the hydraulic conveyor is integrated in the control plate assembly. The control plate assembly includes at least one control plate, which includes, for example, hydraulic channels and hydraulic connections for hydraulic valves. The inventive placement of the hydraulic conveyor in the control plate assembly of the available space can be used optimally, since otherwise required hydraulic connections between the hydraulic control and the hydraulic conveyor can be omitted.
Ein bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch gekennzeichnet, dass eine erste Hydraulikpumpe in eine erste Steuerplatte der Steuerplattenanordnung integriert ist. Die erste Hydraulikpumpe dient zum Beispiel zur Versorgung eines Aktorsystems eines Parallelschaltgetriebes mit Hydrauliköl. Das Aktorsystem ist vorzugsweise mit einem Druckspeicher ausgestattet, der mit Hilfe der ersten Hydraulikpumpe befüllt beziehungsweise aufgeladen wird. Die erste Hydraulikpumpe liefert vorzugsweise einen relativ geringen Hydraulikmediumvolumenstrom, allerdings mit einem relativ hohen Druck. A preferred embodiment of the hydraulic control is characterized in that a first hydraulic pump is integrated in a first control plate of the control plate assembly. The first hydraulic pump is used, for example, to supply an actuator system of a parallel shift transmission with hydraulic oil. The actuator system is preferably equipped with a pressure accumulator which is filled or charged with the aid of the first hydraulic pump. The first hydraulic pump preferably delivers a relatively low hydraulic medium volume flow, but with a relatively high pressure.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass eine zweite Hydraulikpumpe in eine zweite Steuerplatte der Steuerplattenanordnung integriert ist. Die zweite Hydraulikpumpe dient zum Beispiel zur Versorgung einer Nasskupplung mit Kühlmedium, insbesondere Kühlöl. -Die zweite Hydraulikpumpe liefert einen relativ großen Hydraulikmediumvolumenstrom, allerdings mit einem relativ geringen Druck. characterized in that a second hydraulic pump is integrated in a second control plate of the control plate assembly. The second hydraulic pump is used, for example, to supply a wet clutch with cooling medium, in particular cooling oil. -The second hydraulic pump provides a relatively large hydraulic medium flow rate, but with a relatively low pressure.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass die beiden Hydraulikpumpen durch einen einzigen Elektromotor angetrieben sind. Ein ansonsten erforderlicher zweiter Elektromotor zum Antrieb der zweiten Hydraulikpumpe kann entfallen. DerElektromotor ist vorzugsweise außen an die erste Steuerplatte angebaut. Die beiden Hydraulikpumpen sind vorzugsweise komplett in den beiden Steüer- platten der Steuerplattenanordnung angeordnet. Somit wird für die Hydraulikpumpen kein zusätzlicher Bauraum, insbesondere kein Gehäuse, benötigt. characterized in that the two hydraulic pumps are driven by a single electric motor. An otherwise required second electric motor for driving the second hydraulic pump can be omitted. The electric motor is preferably mounted on the outside of the first control plate. The two hydraulic pumps are preferably arranged completely in the two control plates of the control plate arrangement. Thus, no additional space, especially no housing needed for the hydraulic pumps.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass die beiden Hydraulikpumpen in Reihe geschaltet sind. Die beiden Hydraulikpumpen sind in den beiden Steuerplatten vorzugsweise benachbart zueinander angeordnet. Dabei sind die Hydraulikpumpen vorzugsweise so angeordnet, dass sie eine gemein- same Antriebsdrehachse aufweisen, die mit der Antriebsdrehachse des Elektromotors zusammenfällt. characterized in that the two hydraulic pumps are connected in series. The two hydraulic pumps are preferably arranged adjacent to one another in the two control plates. The hydraulic pumps are preferably arranged so that they have a common have same drive axis of rotation, which coincides with the drive axis of rotation of the electric motor.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass die beiden Hydraulikpumpen antriebsmäßig über eine schaltbare Kupplung miteinander koppelbar sind. Durch die schaltbare Kupplung können die beiden Hydraulikpumpen so mit dem Elektromotor gekoppelt werden, dass sie gleichzeitig durch den Elektromotor angetrieben werden. Bei Bedarf kann eine der Hydraulikpumpen mit Hilfe der schaltbaren Kupplung antriebsmäßig von dem Elektromotor abgekoppelt werden. Dann wird nur noch eine der Hydraulikpumpen durch den Elektromotor angetrieben. Wenn der Elektromotor abgeschaltet wird, dann wird keine der Hydraulikpumpen angetrieben. characterized in that the two hydraulic pumps are drivingly coupled to each other via a switchable coupling. Due to the switchable coupling, the two hydraulic pumps can be coupled to the electric motor so that they are simultaneously driven by the electric motor. If required, one of the hydraulic pumps can be decoupled from the electric motor by means of the switchable clutch. Then only one of the hydraulic pumps is driven by the electric motor. When the electric motor is switched off, then none of the hydraulic pumps is driven.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass die Steuerplatten Pumpengehäuse für die Hydraulikpumpen darstellen. Dadurch kann der zur Verfügung stehende Bauraum optimal genutzt werden. characterized in that the control plates are pump housings for the hydraulic pumps. As a result, the available space can be used optimally.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass die beiden Hydraulikpumpen als Zahnradpumpen, insbesondere Au- ßenzahnradpumpen, ausgeführt sind. Sämtliche Pumpenzahnräder der beiden Zahnradpumpen sind in den Steuerplatten angeordnet. Die Lagerung der Pumpenzahnräder ist ebenfalls in die Steuerplatten integriert. in that the two hydraulic pumps are designed as gear pumps, in particular external gear pumps. All pump gears of the two gear pumps are arranged in the control plates. The storage of the pump gears is also integrated in the control plates.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass die beiden Hydraulikpumpen durch eine gemeinsame Pumpenwelle angetrieben sind. Die gemeinsame Pumpenwelle ist, vorzugsweise über eine Oldham- Kupplung, mit dem gemeinsamen Elektromotor gekoppelt, das heißt antriebsmäßig verbunden. Die Oldham-Kupplung ist vorzugsweise an einem Ende der gemeinsamen Pumpenwelle angeordnet. An dem anderen Ende der gemeinsamen Pumpenwelle ist vorzugsweise die schaltbare Kupplung angeordnet. characterized in that the two hydraulic pumps are driven by a common pump shaft. The common pump shaft is, preferably via an Oldham coupling, coupled to the common electric motor, that is drivingly connected. The Oldham coupling is preferably located at one end of the common pump shaft. At the other end of the common pump shaft, the shiftable clutch is preferably arranged.
Ein weiteres bevorzugtes Ausführungsbeispiel der Hydrauliksteuerung ist dadurch Another preferred embodiment of the hydraulic control is characterized
gekennzeichnet, dass zwischen den beiden Steuerplatten ein Zwischenblech angeordnet ist, durch das sich ein Stehlager von der ersten in die zweite Steuerplatte erstreckt. Das Stehlager umfasst zum Beispiel eine Stehlagerhülse, die fest mit der ersten Steuerplatte verbunden ist, zum Beispiel in diese eingepresst ist, und in einen Aufnahmeraum für die zweite Hydraulikpumpe ragt, der in der zweiten Steuerplatte ausgespart ist. in that an intermediate plate is arranged between the two control plates, through which a pillow block extends from the first to the second control plate. The plummer block includes, for example, a plummer block sleeve which is fixedly connected to the first control plate, for example, is pressed into this, and in a receiving space for the second hydraulic pump protrudes, which is recessed in the second control plate.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein Ausführungsbeispiel im Einzelnen beschrieben ist. Es zeigen: Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, an embodiment is described in detail. Show it:
Figur 1 die Darstellung eines ersten Schnitts durch eine erfindungsgemäße Hydrauliksteuerung bei betätigter Schaltkupplung; Figure 1 shows a representation of a first section through a hydraulic control according to the invention with actuated clutch;
Figur 2die Darstellung eines zweiten Schnitts durch die Hydrauliksteuerung aus Figur 1 bei betätigter Schaltkupplung und 2 shows the representation of a second section through the hydraulic control of Figure 1 with actuated clutch and
Figur 3 den gleichen Schnitt wie in Figur 1 bei nicht betätigter Schaltkupplung. Figure 3 shows the same section as in Figure 1 with non-actuated clutch.
In den Figuren 1 bis 3 ist eine Hydrauliksteuerung 1 für ein Parallelschaltgetriebe eines Kraftfahrzeugs in verschiedenen Schnittansichten und Zuständen dargestellt. Die Hydrauliksteuerung 1 umfasst eine Steuerplattenanordnung 10 mit einer ersten Steuerplatte 11 und einer zweiten Steuerplatte 12. Zwischen den beiden Steuerplatten 11 und 12 ist ein Zwischenblech 13 angeordnet. In Figures 1 to 3, a hydraulic control system 1 for a parallel shift transmission of a motor vehicle is shown in various sectional views and states. The hydraulic control 1 comprises a control plate assembly 10 having a first control plate 11 and a second control plate 12. Between the two control plates 11 and 12, an intermediate plate 13 is arranged.
In die Steuerplattenanordnung 10 ist eine hydraulische Fördereinrichtung 14 integriert, die eine erste Hydraulikpumpe 15 und eine zweite Hydraulikpumpe 16 umfasst. Die beiden Hydraulikpumpen 15, 16 sind beide durch einen einzigen Elektromotor 18 angetrieben. In the control plate assembly 10, a hydraulic conveyor 14 is integrated, which includes a first hydraulic pump 15 and a second hydraulic pump 16. The two hydraulic pumps 15, 16 are both driven by a single electric motor 18.
Der Elektromotor 18 ist an die der zweiten Steuerplatte 12 abgewandte Seite der ersten Steuerplatte 11 angebaut. Auf der der ersten Steuerplatte 11 abgewandten Seite der zweiten Steuerplatte 12 ist ein Aufnahmeraum für die hydraulische Fördereinrichtung 14 in den beiden Steuerplatten 11 , 12 durch einen Abschlussdeckel 19 mit einer entsprechenden Dichtung hydraulikdicht abgeschlossen. The electric motor 18 is attached to the side facing away from the second control plate 12 of the first control plate 11. On the side facing away from the first control plate 11 side of the second control plate 12, a receiving space for the hydraulic conveyor 14 in the two control plates 11, 12 is closed hydraulically sealed by a cover 19 with a corresponding seal.
Die beiden Hydraulikpumpen 15, 16 sind beide über eine gemeinsame Pumpenwelle 20 durch den Elektromotor 18 antreibbar. Die gemeinsame Pumpenwelle 20 erstreckt sich in den beiden Steuerplatten 11 und 12 durch das Zwischenblech 13 hindurch. Ein Ende der Pumpen- welle 20 ist über eine Oldham- upplung 22 mit einer Antriebswelle des Elektromotors 18 drehfest verbunden. The two hydraulic pumps 15, 16 are both driven by a common pump shaft 20 by the electric motor 18. The common pump shaft 20 extends in the two control plates 11 and 12 through the intermediate plate 13 therethrough. One end of the pump shaft 20 is rotatably connected via a Oldham- uptake 22 with a drive shaft of the electric motor 18.
Beide Hydraulikpumpen 15, 16 sind als Außenzahnradpumpen ausgeführt, bei denen Both hydraulic pumps 15, 16 are designed as external gear pumps, in which
Hydraulikmedium, insbesondere Hydrauliköl, in Zahnlücken mitgenommen und entlang einer Steuerplatteninnenwandung von einem Saugraum zu einem Druckraum gefördert wird. Durch den Eingriff von Zahnradzähnen wird ein unerwünschtes Zurückströmen des Hydraulikmediums verhindert. Im Betrieb der Außenzahnradpumpen entsteht auf einer Saugseite ein Unterdruck und auf einer Druckseite ein Überdruck. Hydraulic medium, in particular hydraulic oil, taken in tooth gaps and is conveyed along a Steuerplatteninnenwandung of a suction chamber to a pressure chamber. The engagement of gear teeth prevents unwanted backflow of the hydraulic medium. During operation of the external gear pumps, a negative pressure is created on one suction side and an overpressure on one pressure side.
Die gemeinsame Pumpenwelle 20 ist über einen Querstift 23 drehfest mit einem Pumpenzahnrad 24 der ersten Hydraulikpumpe 15 verbunden. Das durch die Pumpenwelle 20 angetriebene Pumpenzahnrad 24 kämmt mit einem weiteren Pumpenzahnrad 28 der ersten Hydraulikpumpe 15. Das weitere Pumpenzahnrad 28 der ersten Hydraulikpumpe 15 ist durch einen weiteren Querstift 29 drehfest mit einer Pumpenachse 30 verbunden. Die Pumpenachse 30 ist, ebenso wie die Pumpenwelle 20, drehbar in zwei Lagerbrillen 25, 26 gelagert. The common pump shaft 20 is rotatably connected via a transverse pin 23 with a pump gear 24 of the first hydraulic pump 15. The pump gear 24 driven by the pump shaft 20 meshes with another pump gear 28 of the first hydraulic pump 15. The further pump gear 28 of the first hydraulic pump 15 is connected in a rotationally fixed manner to a pump shaft 30 by a further transverse pin 29. The pump shaft 30, as well as the pump shaft 20, rotatably mounted in two bearing glasses 25, 26.
Die beiden Pumpenzahnräder 24, 28 sind mit Hilfe der Lagerbrillen 25, 26 in der ersten Steuerplatte 11 gelagert. Die beiden Lagerbrillen 25, 26 stellen axiale Anlaufflächen für die Pumpenzahnräder 24, 28 zur Verfügung. Zur Spaltkompensation ist mindestens ein Dichtring vorgesehen. Die zweite Hydraulikpumpe 16 verfügt über ein deutlich geringeres Druckniveau als die erste Hydraulikpumpe 15 und ist ohne Lagerbrillen direkt zwischen dem Zwischenblech 13 und der zweiten Steuerplatte 12 eingebaut. The two pump gears 24, 28 are mounted with the aid of the bearing glasses 25, 26 in the first control plate 11. The two bearing glasses 25, 26 provide axial contact surfaces for the pump gears 24, 28 available. For gap compensation at least one sealing ring is provided. The second hydraulic pump 16 has a significantly lower pressure level than the first hydraulic pump 15 and is installed without bearing glasses directly between the intermediate plate 13 and the second control plate 12.
Zur Lagerung der zweiten Hydraulikpumpe 16 dient ein Stehlager 34, das eine Stehlagerhülse umfasst, die mit einem Ende in der ersten Steuerplatte 11 befestigt ist. Die Stehlagerhülse ist vorzugsweise in die Steuerplatte 11 eingepresst und ragt in einen Aufnahmeraum für die zweite Hydraulikpumpe 16 in der zweiten Steuerplatte 12. An dem dem Elektromotor 18 abgewandten Ende der Pumpenwelle 20 ist eine Schaltkupplung 35 vorgesehen, die über eine Verzahnung 36 am Ende der Pumpenwelle 20 drehfest mit der Pumpenwelle 20 verbindbar ist. For storage of the second hydraulic pump 16 is a pillow block 34 which includes a plummer block sleeve which is fixed with one end in the first control plate 11. The plummer block sleeve is preferably pressed into the control plate 11 and protrudes into a receiving space for the second hydraulic pump 16 in the second control plate 12. At the end of the pump shaft 20 facing away from the electric motor 18, a clutch 35 is provided, which via a toothing 36 at the end of the pump shaft 20 rotatably connected to the pump shaft 20 is connected.
Die Schaltkupplung 35 ist durch Formschluss, zum Beispiel durch zwei Nasen, permanent drehfest mit einem Pumpenzahnrad 32 der zweiten Hydraulikpumpe 16 verbunden, und zwar auch bei nicht betätigter Kupplung 35. Das hat den Vorteil, dass bei einer Nichtbetätigung der Schaltkupplung 35, also bei stehendem Pumpenzahnrad 32, auch die Schaltkupplung 35 und ein zugehöriger Dichtring 37, der zur Abdichtung eines Druckraums dient, keine Drehbewegung ausführt und somit keine Leistungsverluste erzeugt. Darüber hinaus muss durch den permanenten Formschluss zwischen der Schaltkupplung 35 und dem Pumpenzahnrad 32 die Schaltkupplung 35 nicht bei jedem Schaltvorgang in das Pumpenzahnrad 32 eingefädelt werden. The clutch 35 is by positive engagement, for example by two lugs, permanently rotatably connected to a pump gear 32 of the second hydraulic pump 16, even when not actuated clutch 35. This has the advantage that at a non-actuation of the Clutch 35, so when the pump gear 32, and the clutch 35 and an associated sealing ring 37, which serves to seal a pressure chamber, no rotational movement and thus produces no power losses. In addition, due to the permanent positive connection between the clutch 35 and the pump gear 32, the clutch 35 does not need to be threaded into the pump gear 32 during each shift.
Das Pumpenzahnrad 32 der zweiten Hydraulikpumpe 16 kämmt mit einem weiteren The pump gear 32 of the second hydraulic pump 16 meshes with another
Pumpenzahnrad 38, das mit Hilfe eines weiteren Stehlagers 39 drehbar in der zweiten Steuerplatte 12 gelagert ist. Das Stehlager 39 umfasst eine Stehlagerhülse, die mit einem Ende in die erste Steuerplatte 11 eingepresst ist und mit dem anderen Ende in die zweite Steuerplatte 12 ragt. Pump gear 38, which is rotatably supported in the second control plate 12 by means of another pillow block 39. The pillow block 39 comprises a plummer block sleeve, which is pressed with one end into the first control plate 11 and projects with the other end into the second control plate 12.
In den Figuren 1 und 2 ist die Schaltkupplung 35 im betätigten Zustand dargestellt, in welchem die Pumpenwelle 20 über den Querstift 23 antriebsmäßig mit dem Pumpenzahnrad 24 der ersten Hydraulikpumpe 15 und über die betätigte Schaltkupplung 35 antriebsmäßig mit dem Pumpenzahnrad 32 der zweiten Hydraulikpumpe 16 verbunden ist. Die Schaltkupplung 35 wird über ein hydraulisches Schaltsignal betätigt, das über einen Hydraulikkanal 40 hydraulisch an die Schaltkupplung 35 übermittelt wird. In Figures 1 and 2, the clutch 35 is shown in the actuated state in which the pump shaft 20 via the transverse pin 23 drivingly connected to the pump gear 24 of the first hydraulic pump 15 and the actuated clutch 35 is drivingly connected to the pump gear 32 of the second hydraulic pump 16 , The clutch 35 is actuated via a hydraulic switching signal, which is transmitted via a hydraulic channel 40 hydraulically to the clutch 35.
Wenn die Schaltkupplung 35 nicht hydraulisch betätigt ist, dann ist, wie man in Figur 3 sieht, die drehfeste Verbindung zwischen der Verzahnung 36 am Ende der Pumpenwelle 20 und einer komplementär ausgebildeten Verzahnung 42 der Schaltkupplung 35 unterbrochen. Im un- betätigten Zustand der Schaltkupplung 35 ist das Pumpenzahnrad 32 der zweiten Hydraulikpumpe 16 nicht angetrieben. Somit wird nur die erste Hydraulikpumpe 15 durch den Elektromotor 18 angetrieben. Wenn der Elektromotor 18 abgeschaltet wird, dann sind beide Hydraulikpumpen 15 und 16 nicht angetrieben. If the clutch 35 is not actuated hydraulically, then, as can be seen in Figure 3, the rotationally fixed connection between the teeth 36 at the end of the pump shaft 20 and a complementary toothing 42 of the clutch 35 is interrupted. In the non-actuated state of the clutch 35, the pump gear 32 of the second hydraulic pump 16 is not driven. Thus, only the first hydraulic pump 15 is driven by the electric motor 18. When the electric motor 18 is turned off, then both hydraulic pumps 15 and 16 are not driven.
Die Ausführung der beiden Hydraulikpumpen 15, 16 als Außenzahnradpumpen liefert vor allem bei niedrigen Temperaturen Vorteile, da die Außenzahnradpumpen dann geringere Leistungsverluste im Vergleich zu anderen Pumpenkonzepten aufweisen. Die Verwendung der Oldham-Kupplung 22 liefert den Vorteil, dass axialer und radialer Versatz zwischen der Antriebswelle des Elektromotors 18 und der Pumpenwelle 20 ausgeglichen werden können. Durch die vollständige Integration der beiden Hydraulikpumpen 16 und 15 in die Steuerplat- tenanordnung 10 können zusätzliche Pumpengehäuse und ansonsten erforderliche Hydraulikleitungen komplett entfallen. The design of the two hydraulic pumps 15, 16 as external gear pumps provides advantages especially at low temperatures, since the external gear pumps then have lower power losses in comparison to other pump concepts. The use of the Oldham coupling 22 provides the advantage that axial and radial misalignment between the drive shaft of the electric motor 18 and the pump shaft 20 can be compensated. Due to the complete integration of the two hydraulic pumps 16 and 15 in the control panel tenanordnung 10 additional pump housing and otherwise required hydraulic lines can be completely eliminated.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
I Hydrauliksteuerung I hydraulic control
10 Steuerplattenanordnung  10 control plate assembly
I I Steuerplatte  I I control plate
12 Steuerplatte  12 control plate
13 Zwischenblech  13 intermediate sheet
14 Fördereinrichtung  14 conveyor
15 erste Hydraulikpumpe  15 first hydraulic pump
16 zweite Hydraulikpumpe  16 second hydraulic pump
18 Elektromotor  18 electric motor
19 Abschlussdeckel  19 end cover
20 Pumpenwelle  20 pump shaft
22 Oldham-Kupplung  22 Oldham clutch
23 Querstift  23 cross pin
24 Pumpenzahnrad  24 pump gear
25 Lagerbrille  25 bearing glasses
26 Lagerbrille  26 bearing glasses
28 Pumpenzahnrad  28 pump gear
29 Querstift  29 cross pin
30 Pumpenachse  30 pump axis
32 Pumpenzahnrad 32 pump gear
34 Stehlager  34 pillow block
35 Schaltkupplung  35 clutch
36 Verzahnung  36 toothing
37 Dichtring  37 sealing ring
38 Pumpenzahnrad  38 pump gear
39 Stehlager  39 pillow block
40 Kanal  40 channel
42 Verzahnung  42 toothing

Claims

Patentansprüche claims
1. Hydrauliksteuerung mit einer Steuerplattenanordnung (10) und mit einer hydraulischen Fördereinrichtung (14) zum Fördern eines Hydraulikmediums, dadurch gekennzeichnet, dass die hydraulische Fördereinrichtung (14) in die Steuerplattenanordnung (10) integriert ist. Hydraulic control with a control plate assembly (10) and with a hydraulic conveyor (14) for conveying a hydraulic medium, characterized in that the hydraulic conveyor (14) in the control plate assembly (10) is integrated.
2. Hydrauliksteuerung nach Anspruch 1 , dadurch gekennzeichnet, dass eine erste Hydraulikpumpe (15) in eine erste Steuerplatte (11 ) der Steuerplattenanordnung (10) integriert ist. 2. Hydraulic controller according to claim 1, characterized in that a first hydraulic pump (15) in a first control plate (11) of the control plate assembly (10) is integrated.
3. Hydrauliksteuerung nach Anspruch 2, dadurch gekennzeichnet, dass eine zweite Hydraulikpumpe (16) in eine zweite Steuerplatte (12) der Steuerplattenanordnung (10) integriert ist. 3. Hydraulic control according to claim 2, characterized in that a second hydraulic pump (16) in a second control plate (12) of the control plate assembly (10) is integrated.
4. Hydrauliksteuerung nach Anspruch 3, dadurch gekennzeichnet, dass die beiden Hydraulikpumpen (15,16) durch einen gemeinsamen Elektromotor (18) angetrieben sind. 4. Hydraulic control according to claim 3, characterized in that the two hydraulic pumps (15,16) are driven by a common electric motor (18).
5. Hydrauiiksteuerung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die beiden Hydraulikpumpen (15,16) in Reihe geschaltet sind. 5. Hydrauiiksteuerung according to claim 3 or 4, characterized in that the two hydraulic pumps (15,16) are connected in series.
6. Hydrauliksteuerung nach einem der vorhergehenden Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die beiden Hydraulikpumpen (15,16) antriebsmäßig über eine schaltbare Kupplung (35) miteinander koppelbar sind. 6. Hydraulic control according to one of the preceding claims 3 to 5, characterized in that the two hydraulic pumps (15,16) are drivingly coupled via a switchable coupling (35) with each other.
7. Hydrauliksteuerung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die Steuerplatten (11 ,12) Pumpengehäuse für die Hydraulikpumpen (15,16) darstellen. 7. Hydraulic controller according to one of claims 3 to 6, characterized in that the control plates (11, 12) pump housing for the hydraulic pumps (15,16) represent.
8. Hydrauliksteuerung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass die beiden Hydraulikpumpen (15,16) als Zahnradpumpen, insbesondere Außenzahn- radpumpen, ausgeführt sind. 8. Hydraulic control according to one of claims 3 to 7, characterized in that the two hydraulic pumps (15,16) as gear pumps, in particular external gear wheel pumps, are executed.
9. Hydrauliksteuerung nach einem der Ansprüche 3 bis 8, dadurch gekennzeichnet, dass die beiden Hydraulikpumpen (15,16) durch eine gemeinsame Pumpenwelle (20) angetrieben sind. 9. Hydraulic control according to one of claims 3 to 8, characterized in that the two hydraulic pumps (15,16) are driven by a common pump shaft (20).
10. Hydrauliksteuerung nach Anspruch 9, dadurch gekennzeichnet, dass zwischen den beiden Steuerplatten (11 ,12) ein Zwischenblech (13) angeordnet ist, durch das sich ein Stehlager (34) von der ersten (11 ) in die zweite (12) Steuerplatte erstreckt. 10. Hydraulic controller according to claim 9, characterized in that between the two control plates (11, 12) an intermediate plate (13) is arranged, through which a plummer bearing (34) from the first (11) in the second (12) control plate extends ,
EP10808974.9A 2009-12-21 2010-12-13 Hydraulic control Not-in-force EP2516860B1 (en)

Applications Claiming Priority (2)

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DE102009059747 2009-12-21
PCT/DE2010/001456 WO2011076172A2 (en) 2009-12-21 2010-12-13 Hydraulic control

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DE102012216122A1 (en) 2011-10-10 2013-04-11 Schaeffler Technologies AG & Co. KG Fluid conveying device e.g. double external low pressure gear pump for conveying hydraulic oil, has pair of gears exhibiting same axle distance and different gear geometries to provide different pressures and/or volumetric flows
DE102013203255A1 (en) 2012-03-12 2013-09-12 Schaeffler Technologies AG & Co. KG Fluid control assembly used in hydraulically operated automatic transmission, has jet pump which is partially integrated in control plate arrangement, and drive unit of jet pump is mounted in control plate arrangement
DE102017223675B4 (en) 2017-12-22 2023-01-26 Eckerle Technologies GmbH fluid delivery device
DE102019107961A1 (en) * 2019-03-28 2020-10-01 Schaeffler Technologies AG & Co. KG External gear pump
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WO2022111757A1 (en) * 2020-11-24 2022-06-02 Schaeffler Technologies AG & Co. KG Gear pump
DE102021110892B3 (en) 2021-04-28 2022-09-01 Schaeffler Technologies AG & Co. KG Electric motor driven hydraulic pump actuator
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DE102010054250A1 (en) 2011-06-22
WO2011076172A3 (en) 2012-08-02
EP2516860B1 (en) 2014-03-12
CN102713296A (en) 2012-10-03
WO2011076172A2 (en) 2011-06-30
CN102713296B (en) 2015-11-25

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