Patent ID: 9683561
Date: 2017-06-20
CPC Classifications: F01P,F04B,F16D,F16H

Claim:
1. A drive train cooling arrangement for cooling a first subassembly of a drivetrain of a motor vehicle and for cooling a second subassembly of the drivetrain, comprising: a first cooling circuit by which the first subassembly is cooled, a second cooling circuit by which the second subassembly is cooled, and a pump arrangement, by means of which coolant for cooling the first and second subassemblies can be fed to the first and second cooling circuits, 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, the second pump port is connected to the second cooling circuit, a first coolant volume flow is supplied to the first cooling circuit when the bidirectional pump is driven in a first direction of rotation, and a second coolant volume flow is supplied to the second cooling circuit when the bidirectional pump is driven in a second direction of rotation, wherein the first and second coolant volume flows can be adjusted by changing the rotational speed of the pump electric motor, and wherein one of the first and second pump ports is connected to a low-pressure section via a respective suction valve, so that one of the first and second pump ports is configured as a suction port, depending on the direction of rotation, and coolant can be drawn from the low-pressure section via the respective suction valve.