Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg

Magna Pt B.v. & Co. Kg

Getrag B.v. & Co. Kg

Alexander Kiehlneker

Martin Seufert

Guenter Ruehle

Christian Anzt

Günter Rühle

Stefan Rothvoss

Thorsten Stepper

Elisabet Wagner

Jacques Prost

Pawel Loskot

Moritz Wendt

Mathias Filp

Ingo Keck

Method for determining the temperature of a fluid in a hydraulic arrangement for a motor vehicle. The hydraulic arrangement has a pump arrangement, which is driven by means of a drive motor, and a pressure sensor, which is connected to a discharge port of the pump arrangement and is used to measure the pressure of the fluid. The pump arrangement is connected to a tank via a leakage point. The temperature of the fluid is determined on the basis of a relationship between a state variable of the drive motor and the temperature of the fluid at a predetermined pressure of the fluid, said relationship being specific to the hydraulic arrangement.

Temperature detection method in a hydraulic arrangement

A drive train cooling arrangement for motor vehicles has a first cooling circuit and a second cooling circuit and has a pump arrangement, by means of which coolant can be fed to the first and the second cooling circuit. The pump arrangement has a bidirectional pump, which has a first pump port and a second pump port and which can be driven by a pump electric motor. The first pump port is connected to the first cooling circuit, wherein the second pump port is connected to the second cooling circuit. A coolant volume flow which is provided for at least one of the first and the second cooling circuit can be adjusted by changing the rotational speed of the pump electric motor.

Drive train cooling arrangement and method for operating same

Actuator arrangement for a drive train, which has at least one friction clutch for transmitting drive torque and has a transmission. The friction clutch can be actuated by means of a hydraulic clutch cylinder, which is connected directly to a pump port of a pump driven by an electric motor in order to actuate the friction clutch, such that the friction clutch can be actuated by varying the speed of the pump. The actuator arrangement has a parking lock actuator device for actuating a parking lock arrangement of the drive train. The parking lock actuator device has at least one hydraulic parking lock cylinder, which can be connected to the pump, such that the parking lock arrangement can be actuated by varying at least one of the direction of rotation or the speed of the pump.

Actuator arrangement for a motor vehicle drive train

Nozzle arrangement for fluid applications, in particular for a hydraulic circuit of a motor vehicle drive train. A nozzle body has a first longitudinal end and a second longitudinal end. The nozzle body has a first longitudinal section having a cylindrical outer circumference, which has a first outside diameter. The nozzle body has a blind hole starting from the first longitudinal end. In the region of the second longitudinal end, the nozzle body has a second longitudinal section having a second outside diameter, which is smaller than the first outside diameter. A third longitudinal section is formed between the first longitudinal section and the second longitudinal section. A substantially radially aligned nozzle bore connects the outer circumference of the third longitudinal section to the blind hole. The outer circumference of the first longitudinal section is designed as a press-fitting surface, allowing the nozzle body to be pressed into a bore and allowing the second longitudinal section to form an annular gap with an inner circumference of the bore.

Nozzle arrangement and motor vehicle drive train

Actuator arrangement for a drive train. The actuator arrangement has an actuator pump driven by electric motor, and a clutch actuator, which is designed for actuation of a friction clutch of the drive train and which is connected to a discharge port of the actuator pump. The actuator arrangement has a parking lock actuator, which is designed for actuation of a parking lock arrangement of the drive train. The parking lock actuator has an open position, in which the parking lock arrangement is released, and a closed position, in which the parking lock arrangement is closed. The parking lock actuator is likewise connected to the discharge port of the actuator pump. The parking lock arrangement can be retained in at least one of the open position and the closed position by means of a retaining device.

Actuator arrangement for a drive train

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Flein, Germany

Alexander Kiehlneker