| 摘要 |
The invention relates to a hydraulic control device (101) for controlling a plurality of torque-transmitting switching elements (K_A, K_B, K_C) of an automatic transmission, wherein each switching element has at least one hydraulic actuator (4A, 4B, 4C), which comprises an actuating pressure chamber (7A, 7B, 7C). Said hydraulic control device has at least one shut-off valve (110) and at least one hydraulic switching unit (8) having several pressure control devices (23A, 23B, 23C) dedicated to the various switching elements. The shut-off valve is hereby configured and arranged such that the actuators of at least two switching elements can be hydraulically connected to the pressure control devices by way of a common shut-off valve, wherein in a first switching position of the shut-off valve, all actuating pressure chambers of the at least two switching elements are tightly closed by way of the shut-off valve. In a second switching position of the shut-off valve, all actuating pressure chambers of the at least two switching elements are connected to the pressure control device dedicated to the respective switching element by way of the shut-off valve. |
