Drive train cooling arrangement and method for operating same
AssigneeGETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
InventorsGünter Rühle, Alexander Kiehlneker
Life of this patent
Estimating the term…
Abstract
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.
Claims12
A drive train cooling arrangement for motor vehicles, having a first cooling circuit and a second cooling circuit and having a pump arrangement, by means of which coolant can be fed to the first and the second cooling circuit, wherein 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, wherein the first pump port is connected to the first cooling circuit, wherein the second pump port is connected to the second cooling circuit and wherein 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.
A method for operating a drive train cooling arrangement having a bidirectional pump and having a pump electric motor which drives the pump, wherein the direction of rotation of the pump electric motor is changed at a frequency in a range of from 0.1 Hz to 7 Hz.
Dependencies are inferred from the claim text.