WO2015144155A1 - Antriebskoppelbarer aktor mit verstellpumpe - Google Patents
Antriebskoppelbarer aktor mit verstellpumpe Download PDFInfo
- Publication number
- WO2015144155A1 WO2015144155A1 PCT/DE2015/200106 DE2015200106W WO2015144155A1 WO 2015144155 A1 WO2015144155 A1 WO 2015144155A1 DE 2015200106 W DE2015200106 W DE 2015200106W WO 2015144155 A1 WO2015144155 A1 WO 2015144155A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- actuating
- clutch
- pressure line
- fluid
- 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.)
- Ceased
Links
Classifications
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- 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
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- 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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- 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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
-
- 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
-
- 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
- F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
- F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
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- 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
- F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
- F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
- F16D2048/0236—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation with multiple independent pumps, e.g. one per clutch, or for supplying fluid to different systems
- F16D2048/0239—One fluid source supplying fluid at high pressure and one fluid source supplying fluid at low pressure
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- 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
- F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
- F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
- F16D2048/0245—Electrically driven rotary pumps
- F16D2048/0248—Reversible rotary pumps, i.e. pumps that can be rotated in the two directions
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- 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
- F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
- F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
- F16D2048/0251—Electric motor driving a piston, e.g. for actuating the primary cylinder
Definitions
- the invention relates to an actuator / actuator for actuating a clutch and / or a transmission of a motor vehicle, such as a car, truck, bus or agricultural utility vehicle, having a two fluid connections pump and with a displaceable, fluidly connected to a first fluid port of the pump actuator wherein the pump is adapted to, in a first pump position in which it is driven in a first direction of rotation, for extending the actuating element, a pressurized fluid in a first conveying direction from a second fluid port to the first fluid port promotes out.
- the invention comprises a clutch with such an actuator and a gear assembly (such as a dual-clutch transmission) with such an actuator.
- DE 10 2005 014 633 A1 discloses a clutch and a clutch actuator as well as a method for actuating at least one clutch in a drive train of a vehicle.
- the clutch actuator comprises an electromotive actuator and a disengagement assembly, with which a rotational movement of the actuator is translated into a translational disengagement of a releaser for moving the clutch, wherein the release (disengagement assembly) consists of a belt transmission having an outer part and an inner part and the actuator is formed for the releaser of an electric motor, wherein the outer part of the belt transmission with the crankshaft of the internal combustion engine and the inner part of the belt transmission is coupled to the rotor of the electric motor.
- a clutch system is disclosed in EP 1 236 918 B1, which has a clutch device, in particular for the arrangement in a drive train between a drive unit and a transmission.
- the clutch system also comprises an actuating device for actuating the clutch device hydraulically by means of at least one hydraulic slave cylinder of the clutch device, the actuating device having a hydraulic medium supply device for providing hydraulic medium on an adjustable pressure level determining the actuation state of the clutch device via the slave cylinder.
- the hydraulic medium supply device furthermore has a hydraulic medium which can be influenced with regard to a delivery pressure and / or a delivery rate and / or a delivery direction.
- Pump arrangement wherein the hydraulic medium pump arrangement is arranged and arranged for that by influencing the hydraulic medium pump assembly, the pressure level and thus the operating state is adjustable.
- the known electromotive systems therefore have the disadvantage that usually several electric motors are needed and must be controlled.
- the engines are expensive, require space and are subject to strong price fluctuations.
- the pump is designed as a reversible in terms of their direction of adjustment, wherein the variable displacement pump is such that it is driven by adjustment in a second pump position in which it is driven by the rotating in the first direction of rotation pump drive shaft Engaging the actuator tion piston, a pressurized fluid in a, the first conveying direction opposite, second conveying direction from the first fluid port to the second fluid port promotes out.
- a drive unit wherein the actuation energy for clutch actuation can be removed directly from the drive train / internal combustion engine without an intermediate conversion into another form of energy, for example into electrical energy.
- the variable displacement pump / variable-displacement pump whose delivery volume is adjusted by a force-controlled actuator and one or more (in particular, when used in the later arrangements differential pressure sensor piston) sensor piston, directly coupled to the drive, so that the pressure is proportional adjusts to the desired signal.
- the necessary energy conversion in electrical systems and the associated conversion losses are avoided.
- the efficiency of the clutch operation is significantly increased.
- the energy for the clutch actuation is absorbed by the pump as directly as possible directly from the drive train and fed to the actuating piston.
- these advantages in the use of this pump (s) for actuating clutch and / or transmissions of an automatic transmission (ASG) or parallel-shift transmission (PSG) are further enhanced.
- a first high-pressure line is present, which fluidly connects the first fluid port to the (first) actuating element and / or a low-pressure line is present, which fluidically connects the first fluid port and / or the second fluid port to a restraint system , about a reservoir, connects.
- a preferably force-controlled actuator is provided.
- the actuator is arranged so that, depending on the voltage applied to it, preferably electronically generated adjusting force, the pump between the first pump position and the second pump position is switched back and forth. This allows a particularly efficient adjustment of the pump. As a result, the delivery volume of the pump per revolution is adjustable / adjusted.
- the first high-pressure line is fluidically connected to a first sensor piston which automatically resets the pump to a neutral position at a specific pressure value, the pump being set in the neutral position so that a pressure value in the first high-pressure line is kept constant ,
- the neutral position is preferably carried out as the zero position of the pump, in which the pump is set so that it does not convey pressurized fluid, neither in the first conveying direction nor in the second conveying direction.
- a force-adjusting actuator (adjusting the volume flow and pressure of the pump) in the pump position of the pump is provided which acts on the pump in an adjusting manner together with the first sensor piston and / or with the second sensor piston the pump position of, by the actuator, the first sensor piston and / or the second sensor piston, acting on the adjusting force acting on the pump is dependent.
- a simple adjustment and reversal of the variable is possible by a force acting by the actuator operating force must be simply increased or decreased depending on the desired pump position.
- the respective sensor piston or both sensor pistons then act in accordance with a mechanical P-controller on the first caused by the change in the actuation force of the actuator pump adjustment.
- this adjusting force acts on the pump in such a manner that this adjusting force (of the respective sensor piston) attempts to set the respective other pump position and thus the other conveying direction.
- the neutral position is doing at a
- a second high-pressure line which fluidly connects the second fluid connection with a further, second actuating element
- two actuators can be controlled by the one pump.
- double clutches, clutch-gear units or dual-clutch transmission can be actuated by an actuating device with a pump and the functionality of the actuating device is further improved.
- the second high pressure line is fluidically connected to a, the pump at a certain pressure value automatically resetting in a neutral position, the second sensor piston, wherein the pump is set in the neutral position so that a pressure value in the second High pressure line is kept constant.
- the neutral position is preferably carried out again as the zero position of the pump, in which the pump is set so that it does not convey pressurized fluid, neither in the first conveying direction nor in the second conveying direction.
- the actuating element connected to the first fluid connection of the pump for actuating a clutch and the second actuating element for actuating a transmission are provided and / or configured.
- the installation space occupied by the actuating device can be utilized particularly effectively and can be integrated into a partial transmission of a dual-clutch transmission in a space-saving manner.
- a two-pressure valve wherein a first input of the two-pressure valve with the first high-pressure line, a second input of the two-pressure valve with the second high-pressure line and an outlet of the two-pressure valve are fluidically connected to the low pressure line.
- the pump drive shaft can be driven in an operating state by means of a motor shaft by means of a mechanical connection, such as a gear pair, a chain drive or a belt drive, the actuating device can be driven directly, whereby the efficiency is further improved.
- a mechanical connection such as a gear pair, a chain drive or a belt drive
- a coupling is equipped with an actuating device according to one of the embodiments listed above, wherein the actuating element connected to the first fluid port of the pump for coupling and disengaging the clutch is provided.
- the coupling / coupling device can be designed as a double clutch, wherein preferably each sub-coupling a separate pump is provided, which pumps are in turn designed as the above-mentioned variable displacement.
- the clutch may alternatively be configured as a single clutch.
- gear assembly / clutch-gear unit which is preferably designed as a dual-clutch transmission, equipped with an actuator according to one of the embodiments listed above.
- Each partial transmission is preferably a variable displacement pump is provided, which in turn is provided with two actuators, wherein the first actuator provided for engagement and disengagement of a clutch is and the second actuator is provided for engaging and disengaging a translation stage.
- an actuator / an actuator with reversible pump (variable displacement) is proposed.
- the reversible pump can be connected directly to the drive train. It is necessary that it is adjustable by a delivery volume of "0" (zero position)
- two reversible pumps / variable displacement pumps can be used.Also the actuator with reversing pump can be used for the actuation of both the clutch and the gearbox ,
- FIG. 1 is a schematic representation of a drive train of a motor vehicle comprising an actuating device according to the invention according to a first embodiment, wherein the actuating device is provided for engagement and disengagement of a clutch,
- FIG. 2 is a schematic representation of a drive train of a motor vehicle comprising an actuating device according to the invention according to a second embodiment, wherein the actuating device is provided for engagement and disengagement of a clutch and for actuating a transmission,
- Fig. 3 is a schematic representation of a drive train of a motor vehicle comprising an actuating device according to the invention according to a third embodiment, wherein the actuating device comprises two pumps and each pump for engagement and disengagement of a clutch / a partial clutch of a double clutch and for actuating a partial transmission is provided, and
- Fig. 4 is a schematic representation of a drive train of a motor vehicle comprising an actuating device according to the invention according to a fourth embodiment, wherein the actuating device is designed similar to the actuator shown in Fig. 3 and also has two pumps, but not as in Fig. 3 in axial Direction at the same height and along the Circumference offset from each other, but are arranged side by side in the axial direction.
- FIGs 1 to 4 four embodiments of the actuator 1 according to the invention in a drive train 2 of a motor vehicle, such as a car, truck, bus or agricultural utility vehicle, shown.
- the actuating device 1 is generally provided for actuating a clutch 3, a transmission 4 or both the clutch 3 and the transmission 4.
- the actuator 1 therefore serves as a control which controls the clutch 3, i. a separable connection device for selectively transmitting a torque from an engine shaft / crankshaft 5 of an internal combustion engine 6 (diesel or gasoline engine) to the transmission 4, which transmission 4 is motion-coupled to a wheel 7 or several wheels 7 of the motor vehicle, and / or the transmission 4 adjusted to change the speed and torque conversion.
- an internal combustion engine 6 diesel or gasoline engine
- the actuating device 1 comprises a pump 10a, 10b having two fluid connections 8, 9 and a displaceable (first) actuating element 11 associated with a first fluid connection 8 of the pump 10a, 10b, the pump 10a, 10b being designed to be in a first pump position, in which is driven in a first rotational direction, for extending the actuating element 1 1, a pressurized fluid in a first conveying direction from a second fluid port 9 to the first fluid port 8 promotes out.
- the pump 10a, 10b is configured as a variable displacement pump 10a, 10b with respect to its conveying direction, wherein the variable displacement pump 10a, 10b is adapted to retract after adjustment to a second pumping position in which it is driven in the first direction of rotation of the actuating element 1 1, a pressurized fluid in a, the first conveying direction opposite, second conveying direction of the first fluid port 8 to the second fluid port 9 promotes out.
- the actuating device 1 is configured so that they on a (first) as actuating piston 1 1 ausgestaltetes actuator 1 1 for engagement and disengagement of the (normally disengaged) single clutch designed clutch 3 back and acts herverschiebend.
- actuating piston 1 1 ausgestaltetes actuator 1 1 for engagement and disengagement of the (normally disengaged) single clutch designed clutch 3 back and acts herverschiebend.
- the first fluid connection 8 is fluidic, namely hydraulically with a cylinder housing 14 of the slave cylinder. 13 connected.
- actuating piston 1 The actuating element 1 1, hereinafter referred to as actuating piston 1 1, is slidably mounted in the cylinder housing 14 in the axial direction (along the coupling axis of rotation) and is depending on the pressure value in the cylinder housing 14 in an extended position in which the clutch 3 is closed / engaged , or in a retracted position (as shown in Fig. 1), in which the clutch 3 is opened / disengaged spent.
- a (first) high-pressure line 15 is provided, which is connected to the first fluid connection 8 and to the slave cylinder 13.
- the second fluid connection 9 is connected in this embodiment to a low pressure line 16, which in turn is hydraulically connected to a restraint system 17.
- the restraint system 17 is designed as a separate reservoir, but may alternatively also, for example in embodiment of the clutch 3 as a wet-running clutch 3, be formed directly through the fluid receiving space within a clutch housing / the clutch bell of the clutch 3.
- a (first) actuator 18 which switches the pump 10a between the first pump position and the second pump position.
- the pump 10a which is preferably designed as an adjustable axial piston pump, has an adjusting element 19 (shown here schematically by an arrow), by means of which the pump position is adjustable.
- the adjusting element 19 is designed as a swash plate 19.
- the adjusting member 19 is pivotally mounted relative to the pump 10a (in particular with respect to the pump housing of the pump 10a). In a region of the adjusting element 19, the actuator 18 again engages in order to influence the inclination of the adjusting element 19.
- the adjusting element 19 is pivoted so in the illustrated first pump position due to a first adjusting force generated by the actuator, that the pressure value in the high-pressure line 15 at this time by the conveying of the pressurized fluid in the first conveying direction steadily increases.
- a (first) sensor piston 20 acts on a further region of the adjusting element 19. This first sensor piston 20 is hydraulically connected to the high-pressure line 15 and serves as a control element corresponding to a mechanical P-controller, as a function of the pressure value in the high-pressure line 15.
- the first sensor piston 20 is designed so that it is on reaching a certain pressure value in the high pressure line 15, which is higher than the pressure value in the retracted position of the actuating piston 1 1, with a (second, from the pressure value in the high pressure line 15 dependent) adjusting force resetting acts on the adjusting element 19.
- the sensor piston 20 acts at each pressure greater than zero in the return direction.
- the second adjusting force of the first sensor piston 20 in this case counteracts the first adjusting force of the actuator 18 and thus the adjusting element 19 in the direction of the second conveying direction, that the adjusting element 19 is moved back in the direction of the neutral position after reaching the specific pressure value in the high pressure line.
- this neutral position corresponds to a zero position of the pump 10a, in which the pump 10a is set so that neither in the first nor in the second conveying direction, a pressure fluid flow flows / a pressurized fluid is conveyed.
- a pump drive shaft 12 can be driven in at least one operating state of the actuating device 1 by the motor shaft 5, wherein the pump drive shaft 12 by means of a mechanical connection 21 with the motor shaft 5 is connectable.
- the mechanical connection 21 has a ratio (i), thereby causing a speed and torque conversion between the motor shaft 5 and the pump drive shaft 12.
- the mechanical connection 21 can be designed as a gear pairing, as a belt drive, or as a chain drive.
- the pump drive shaft 12 is preferably permanently connected to the motor shaft 5 rotatably and drives the pump 10 a permanently.
- the pump drive shaft 12 is driven in a predetermined (by the mechanical connection 21) (first) direction of rotation, which means that the pump 10a is driven in this first direction of rotation.
- the drive train 2 is configured approximately as a hybrid drive train, the internal combustion engine 6 may also be switched off during an electric operation of the vehicle, whereby then a drive of the pump drive shaft 12 through the motor shaft 5 is not directly possible. In this electric mode, however, the pump 10a is then rotated in such a way relative to the (stationary) pump drive shaft 12 that nevertheless a drive of the pump 10a in the first direction of rotation is made possible.
- the actuator 18 is adjusted by a reduction of the first adjusting so that the pressurized fluid in the second conveying direction, is fed back into the restraint system 17, and the pressure in the high-pressure line 15 decreases until a minimum pressure value is established, which is lower than the particular pressure value and the actuating piston 1 1 is brought into the retracted position.
- variable displacement pump 10a is designed as an adjustable pump 10a, whose conveying direction is reversible, wherein the fluid pressure influencing the displacement position of the actuating piston 1 1 is controllable in dependence on the pump position.
- the conveying direction of the pump 10 a influencing the pump position can be changed by the actuator 18.
- the sensor piston 20 is configured and connected to the pressure line 43, that, if after a corresponding movement of a plunger of the actuator 18 (by a change in the excitation force of the actuator 18) of the pressure value in the high-pressure line 15 increases, the sensor piston 20 due to Pressure increase extends (first pump position).
- the sensor piston 20 is connected via a branch / a side channel 23 to the high-pressure line 15.
- this branch 23 between the high-pressure line 15 and the sensor piston 38 preferably one (not shown here for clarity) throttle / integrated, which serves as a damping element for the generated during operation by the pump piston of the pump 10 a pressure fluctuations.
- the actuator 18 is preferably designed as an electromotive actuator, which is driven by an inductive coil system.
- a pump-near receiver coil and a pump remote transmitter coil may be provided, wherein the transmitter coil drives the receiver coil via an inductive field.
- the actuator 18 via a voice coil, similar the drive of hard drive arms, drivable.
- the drive may then consist of a stationary part and a moving part, wherein the moving part is in turn made integral with the swash plate 19.
- at least one of the two parts is a coil set, the other then one or more magnets or also a coil set.
- actuating device 1 essentially corresponds to the actuating device 1 according to FIG. 1, which is why the technical features mentioned for the first embodiment also apply in principle to the second embodiment.
- the pump 10 a is now so connected to two high-pressure lines 15, 24 that they can actuate / adjust both the clutch 3 and the transmission 4 in the two pump positions.
- the first high pressure line 15 is, as in the first embodiment, provided for actuating the clutch 3.
- the high pressure line 15 is also hydraulically connected to a first input 25 of a two-pressure valve 26.
- a second high-pressure line 24 is connected, which hydraulically connects the second fluid connection 9 to a second actuating element (not shown here for reasons of clarity), for example as an actuating piston.
- the second actuating element serves as an actuating element for the transmission 4 in order to select and / or insert about a translation stage.
- the second actuating element therefore serves for "gear change" and is supplied with energy via the second high-pressure line 24. Behind the second actuating element, valve logics can also be inserted.
- the second high-pressure line 24 is hydraulically connected to a sensor piston 27, hereinafter referred to as the second sensor piston 27, respectively.
- the second sensor piston 27 is acting on the adjusting element 19 and acts at a certain pressure value in the second high pressure line 24 in a sliding manner on the adjusting element 19 a.
- the second high pressure line 24 is hydraulically connected to a second input 28 of the two-pressure valve 26.
- To an output 32 of the two-pressure valve 26 is again around the low pressure line 17 hydraulically connected to connect the two inputs 25, 28 of the two-pressure valve 26 alternately with the restraint system 17.
- Fig. 2 the first pump position is shown, in which the adjusting / the swash plate 19 is adjusted by the actuator 18 in its inclination that a pressurized fluid from the second high-pressure line 24 via the second fluid port 9 and the first fluid port 8 in the first High-pressure line 15 is pumped. Since the pressure value initially in the second high-pressure line 24 is still greater than the pressure value in the first high-pressure line 15, first of all pressure fluid is withdrawn from the second high-pressure line 24.
- the two-pressure valve 26 is adjusted so that the connection between the low-pressure line 16 and the first high-pressure line 15 is separated and the pressurized fluid thereby via the second high-pressure line 24 is promoted from the restraint system 17.
- the second sensor piston 27 When the pressure value in the first high-pressure line 15 increases, the second sensor piston 27 is retracted and the first sensor piston 20 is extended, so that in turn the adjustment element 19 is restored. Both the second sensor piston 27 and the first sensor piston 20 each generate at a pressure greater than zero an adjusting force, which acts on the adjusting element 19. Finally, at a certain pressure value, the adjusting element 19 or the pump 10a again is forced into the neutral position. As a result, the adjusting element 19 is moved into a neutral position after reaching the predetermined pressure value, in which neutral position the pressure value in the first high-pressure line 15 is kept constant.
- the first sensor piston 20 and the second sensor piston 27 are in this case acting on the adjusting element 19 such that the (second) adjusting force generated by the first sensor piston 20 basically urges the adjusting element 19 in the direction of the second conveying direction and the pressure generated by the second sensor piston 20 (FIG. third) adjusting force basically urges the adjustment member 19 in the direction of the first conveying direction. Since the high pressure line 15 and the slave cylinder 13 in this embodiment has no or a negligible low leakage, this neutral position corresponds to a zero position of the pump 10a, in which the pump 10a is set so that neither in the first nor in the second conveying direction, a pressure fluid flow flows / a pressurized fluid is conveyed.
- the neutral position of the swash plate 19 is preferably supported by a return spring 29, wherein the return spring 29 acts on the swash plate 19 so that the wobble disc 34 is supported with a certain spring force at least when the actuator 18 in the neutral position.
- the pump 10 a is then returned to the second pump position by pivoting the adjusting element 19.
- the actuator 18 is adjusted so that the adjusting / the swash plate 19 is moved in its inclination in the second position 22.
- the pressure fluid from the first high-pressure line 15 is pumped via the first fluid port 8 and the second fluid port 9 into the second high-pressure line 24. Since the pressure value in the first high-pressure line 15 is initially greater than the pressure value in the second high-pressure line 24, pressure fluid is first withdrawn from the first high-pressure line 15.
- the two-pressure valve 26 is adjusted so that the connection between the low-pressure line 16 and the second high-pressure line 24 is disconnected and the pressurized fluid thereby via the first high-pressure line 15 is promoted from the restraint system 17.
- the first sensor piston 20 When the pressure value in the second high-pressure line 15 increases, the first sensor piston 20 is retracted and the second sensor piston 27 is extended, so that in turn the adjustment element 19 is restored. At a certain pressure value, it eventually comes about that the neutral position of the adjusting element 19 or the pump 10a is reached again. As a result, the adjusting element 19 is brought into a neutral position upon reaching the predetermined pressure value, in which neutral position the pressure value in the second high-pressure line 24 is kept constant.
- the actuating device 1 can also be designed as an actuating device for a dual-clutch transmission (PSG or ASG) and can be integrated into such a dual-clutch transmission.
- PSG dual-clutch transmission
- ASG dual-clutch transmission
- the third embodiment of the actuating device 1 has, in addition to the pump 10a, a further, second pump 10b, which is designed and connected like the first pump 10a and how it works. Consequently, both pumps 10a and 10b respectively via the already mentioned high and low pressure lines 15, 16 and 24 for actuating two actuating piston 1 1 configured.
- the two pumps 10a and 10b along the circumference of the motor shaft 5 are arranged offset to one another.
- the first high-pressure line 15 of the first pump 10a is connected to an actuating piston in a first partial clutch 30 and the second high-pressure line 24 of the first pump 10a is connected to an actuating piston within the transmission 4.
- the first high pressure line 15 of the second pump 10b is connected to an actuating piston in a second partial clutch 31 and the second high pressure line 24 of the second pump 10b is connected to an actuating piston within the transmission 4.
- the mechanical connection 21 is also designed as a gear pair, wherein in each case a first helical gear with the motor shaft 5 is rotatably connected and a second, meshing with the first gear second helical gear with the pump drive shaft 12 is rotatably connected.
- gears such as straight toothing on the two gears are possible.
- the clutch / clutch device 3 and the respective partial clutches 30 and 31 each have a pressure plate displaceable in the axial direction of the clutch device 1 (axial direction corresponds to the direction along the clutch rotational axis / rotational axis of the clutch).
- the pressure plate is in the usual manner with the actuating piston 1 1 of the actuator 1 cooperatively / motion coupled.
- the pressure plate is between an engaged position, in which position the pressure plate 7 is non-rotatably connected to a clutch disc and a counter-pressure plate of the coupling device 1, and an unactuated position, i. the disengaged position, in which the pressure plate is not rotatably connected, but spaced from the clutch disc and the counter-pressure plate is arranged and no torque between the clutch disc and the reaction plate / pressure plate is transmitted, reciprocated.
- a clutch actuation with a variable-displacement pump (variable displacement pump 10a and 10b) connected to the drive is made possible by the example of a single clutch with CSC ("central slave cylinder")
- Motor shaft 15 is connected with optional transmission via a mechanical connection 21.
- This connection and transmission can take place, for example, as gears, belts, chains or other connections, likewise pump 10a, 10b can sit directly on motor shaft 15.
- the pump 10a, 10b is designed as an adjustment reversing pump 10a, 10b, the delivery volume is adjusted via a force input by an actuator 18 and a sensor piston 20, 27 on the pressure side.
- a reservoir 17 is connected in a first embodiment.
- the high pressure side is connected to a slave cylinder 13 of a clutch 3.
- Variable reversing pump 10a, 10b means that the pump 10a, 10b can adjust their delivery volume by "0" / "zero” and thus can reverse the conveying direction with the same direction of rotation of the drive.
- the magnitude and sign of the delivery flow as a function of actuator 18 and sensor pistons 20, 27 are established.
- the actuation of a partial transmission is still possible, consisting of clutch 3 and 4 gear with a variable-displacement pump 10a, 10b.
- the clutch 3 can be designed analogous to the clutch 3 of the first embodiment, the transmission operation can be analogous to a hydraulic valves, or designed according to "LuK HGA principle".
- the pump 10a, 10b is again connected to the motor shaft 5 via gears.
- the gears are shown angled, but may also be straight, or as a belt drive, etc.
- the pump 10 a, 10 b can now build pressure in two directions to actuate either the transmission 4 or the clutch 4.
- the logic for this is controlled by the two-pressure valve 26. Since there are now two print pages, the pump requires two sensor pistons 20, 27, one for each print direction.
- the operating principle is analogous to the first embodiment.
- a return spring 29 may be used to pull the pump 10a, 10b to neutral when the actuator 18 is off.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/127,572 US20170138417A1 (en) | 2014-03-24 | 2015-02-26 | Actuator which can be drive-coupled and has a variable displacement pump |
| DE112015001387.3T DE112015001387A5 (de) | 2014-03-24 | 2015-02-26 | Antriebskoppelbarer Aktor mit Verstellpumpe |
| CN201580015823.4A CN106104055B (zh) | 2014-03-24 | 2015-02-26 | 具有移位泵的能够驱动耦合的促动器 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014205439.7 | 2014-03-24 | ||
| DE102014205439 | 2014-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015144155A1 true WO2015144155A1 (de) | 2015-10-01 |
Family
ID=52810920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2015/200106 Ceased WO2015144155A1 (de) | 2014-03-24 | 2015-02-26 | Antriebskoppelbarer aktor mit verstellpumpe |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20170138417A1 (de) |
| CN (1) | CN106104055B (de) |
| DE (1) | DE112015001387A5 (de) |
| WO (1) | WO2015144155A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016207134B3 (de) * | 2016-04-27 | 2017-09-07 | Schaeffler Technologies AG & Co. KG | Fluidanordnung zum fluidischen Betätigen von Kraftfahrzeugkomponenten |
| DE102016223386A1 (de) * | 2016-11-25 | 2018-05-30 | Zf Friedrichshafen Ag | Pumpensystem, Automatikgetriebe und Kraftfahrzeug |
| DE102017002380A1 (de) | 2017-03-11 | 2018-09-13 | Daimler Ag | Automatisches Fahrzeuggetriebe für ein Hybrid- oder Elektrofahrzeug |
| FR3080660A1 (fr) * | 2018-04-30 | 2019-11-01 | Poclain Hydraulics Industrie | <P>ENGAGEMENT ET DESENGAGEMENT PROGRESSIF D'UN DISPOSITIF D'EMBRAYAGE POUR VEHICULE</P> |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018007459A1 (de) * | 2018-09-21 | 2020-03-26 | Fte Automotive Gmbh | Vorrichtung zur hydraulischen Kupplungsbetätigung und Getriebeschmierung für ein Kraftfahrzeug |
| DE102020101912A1 (de) * | 2020-01-28 | 2021-07-29 | Schaeffler Technologies AG & Co. KG | Kupplungssteuerventil für eine Reibkupplung |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1065379A2 (de) * | 1999-07-02 | 2001-01-03 | DaimlerChrysler AG | Elektrohydraulische Druckversorgung mit verstellbarer Pumpe und regelbarem elektrischem Antrieb |
| EP1236918B1 (de) | 2001-02-22 | 2003-10-15 | ZF Sachs AG | Kupplungssystem mit einer unter Vermittlung einer Hydraulik-Pumpenanordnung betätigbaren Kupplungseinrichtung |
| DE102005014633A1 (de) | 2004-04-16 | 2005-11-03 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Kupplungsaktorik und Verfahren zum Betätigen zumindest einer Kupplung in einem Antriebsstrang eines Fahrzeugs |
| DE102009015319A1 (de) * | 2008-04-01 | 2009-10-15 | GM Global Technology Operations, Inc., Detroit | Variable Hydraulikpumpe für ein Getriebe und Verfahren für den Betrieb |
| US20130341152A1 (en) * | 2012-06-25 | 2013-12-26 | GM Global Technology Operations LLC | Latching clutch valve control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE441792T1 (de) * | 2005-04-25 | 2009-09-15 | Hoerbiger & Co | Betätigungssteuereinrichtung für die lamellen einer hydraulischen doppelkupplung |
| EP2557336B1 (de) * | 2010-07-21 | 2018-11-07 | hofer mechatronik GmbH | Getriebehydraulik eines Doppelkupplungsgetriebes und Steuerungsverfahren mit hydraulischen Ventilen für ein Doppelkupplungsgetriebe |
-
2015
- 2015-02-26 WO PCT/DE2015/200106 patent/WO2015144155A1/de not_active Ceased
- 2015-02-26 CN CN201580015823.4A patent/CN106104055B/zh not_active Expired - Fee Related
- 2015-02-26 DE DE112015001387.3T patent/DE112015001387A5/de not_active Withdrawn
- 2015-02-26 US US15/127,572 patent/US20170138417A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1065379A2 (de) * | 1999-07-02 | 2001-01-03 | DaimlerChrysler AG | Elektrohydraulische Druckversorgung mit verstellbarer Pumpe und regelbarem elektrischem Antrieb |
| EP1236918B1 (de) | 2001-02-22 | 2003-10-15 | ZF Sachs AG | Kupplungssystem mit einer unter Vermittlung einer Hydraulik-Pumpenanordnung betätigbaren Kupplungseinrichtung |
| DE102005014633A1 (de) | 2004-04-16 | 2005-11-03 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Kupplungsaktorik und Verfahren zum Betätigen zumindest einer Kupplung in einem Antriebsstrang eines Fahrzeugs |
| DE102009015319A1 (de) * | 2008-04-01 | 2009-10-15 | GM Global Technology Operations, Inc., Detroit | Variable Hydraulikpumpe für ein Getriebe und Verfahren für den Betrieb |
| US20130341152A1 (en) * | 2012-06-25 | 2013-12-26 | GM Global Technology Operations LLC | Latching clutch valve control system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016207134B3 (de) * | 2016-04-27 | 2017-09-07 | Schaeffler Technologies AG & Co. KG | Fluidanordnung zum fluidischen Betätigen von Kraftfahrzeugkomponenten |
| DE102016223386A1 (de) * | 2016-11-25 | 2018-05-30 | Zf Friedrichshafen Ag | Pumpensystem, Automatikgetriebe und Kraftfahrzeug |
| DE102017002380A1 (de) | 2017-03-11 | 2018-09-13 | Daimler Ag | Automatisches Fahrzeuggetriebe für ein Hybrid- oder Elektrofahrzeug |
| FR3080660A1 (fr) * | 2018-04-30 | 2019-11-01 | Poclain Hydraulics Industrie | <P>ENGAGEMENT ET DESENGAGEMENT PROGRESSIF D'UN DISPOSITIF D'EMBRAYAGE POUR VEHICULE</P> |
| WO2019211289A1 (fr) * | 2018-04-30 | 2019-11-07 | Poclain Hydraulics Industrie | Engagement et désengagement progressif d'un dispositif d'embrayage pour véhicule |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106104055B (zh) | 2019-06-11 |
| DE112015001387A5 (de) | 2016-12-08 |
| CN106104055A (zh) | 2016-11-09 |
| US20170138417A1 (en) | 2017-05-18 |
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