Pneumatic central locking and antitheft system for motor vehicle - has pressure generator, pressure line, and regulating element for locking and protection per locking place with pressure sensor with control unit

摘要

The adjusting elements for the central locking (ZV) and the theft protection (DS) are controlled over the same pressure line system (2). The control pressure (P1) for the central locking circuit is set lower than the control pressure (P2) for the switch position of the theft protection circuit. A unit (5, 6, 7) is provided, which responds in the event of a disturbance, by preventing an increase of the control pressure to the higher level of the pressure (P2), if the switching position for the theft protection circuit (DS) is not switched on. A blow-off valve (5) is pref. used as the disturbance unit, which opens if the pressure in the pressure line system (2) exceeds the pressure (P1) by an adjustable amount, which yet does not respond, if the switch position (DS) is switched on. ADVANTAGE - System takes precautions which ensures that pressure in control system only can rise above that set for central locking, if theft protection is switched on.