Pressure control valve for e.g. automatic vehicle transmission system, has slide valve cylinder accommodated in cylinder housing and driven by stepper motor for connection or separation of inlet, outlet and control channel

摘要

The valve has an inlet (72), an outlet (74) and a control channel (54) that flow into a cylinder housing (70), where the inlet, the outlet and the control channel controls an inlet pressure, an outlet pressure and a control pressure, respectively. A slide valve cylinder (87) is accommodated in the housing and is driven by a stepper motor for connection or separation of the inlet, the outlet and the control channel. A two-dimensional rotary slide valve segment (84) is formed at the periphery of the cylinder (87).