Control system for adjustable parts pref. for motor vehicles with at least one adjusting element

摘要

A switching unit (12,12a) is provided in the line connection from the pump (10) to the pilot valve (7,7a). Which with the standstill of the adjustable part (1,2), interrupts the line connection from the pump (10) in a sudden manner. Pump motor (25) is switched off if steering wheel is still.The switching unit (12,12a) can be adjusted in a passage allowing position under the hydraulic medium pressure. A unit (33) building up the pressure in the hydraulic medium is provided in a feedback line (19), from the adjusting element (2) to the tank (11).