HYDRAULIC DEVICE FOR TRANSMISSION LUBRICATION AND CLUTCH COOLING FOR A MOTOR VEHICLE

A hydraulic device (H, H') for transmission lubrication and clutch cooling comprises a reversing pump (P) in which, depending on the rotation direction of the pump, one of two pump ports (P1, P2) lies on the suction side and the other pump port lies on the pressure side, with a suction inlet (S) for drawing in a hydraulic fluid from a storage container (B), a first outlet (A1) for hydraulic fluid for transmission lubrication, and a second outlet (A2) for hydraulic fluid for clutch cooling. To conduct the hydraulic fluid from the suction inlet to the outlets, a valve arrangement (V) is provided with at least four check valves (R1, R2, R3, R4) which are arranged between the pump ports, the suction inlet and the outlets such that hydraulic fluid can only be drawn in via the suction inlet on the suction side and can only be output on the pressure side in the direction of the outlets. Furthermore, the outlets are hydraulically connected by means of a connecting portion (C) having a diaphragm (D1) and a check valve (R5) which blocks in the direction of the second outlet, so that depending on the rotation direction of the pump, transmission lubrication or combined clutch cooling and transmission lubrication takes place.