CONTROL DEVICE AND CONTROL SYSTEM OF A HYDRAULICALLY ACTUATED DEVICE FOR PARKING AND/OR EMERGENCY BRAKE UNIT OF A VEHICLE USABLE IN AGRICULTURE OR CIVIL ENGINEERING

摘要

a control system for a hydraulically operated, with a federspeicherbremszylinder (2) as bremszuspanneinrichtung (caps lock and / or notbremseinrichtung (1)preferably, a country or bauwirtschaftlich usable tractor or systemfahrzeuges provided.the control unit serves to control the pressure in a surge chamber (4) of the federspeicherbremszylinders (2)with this, and a sleeve (9) is arranged and a wegeventil trainedelectronically, in two different schaltstellungen aktuierbares bremsbetätigungsventil (16) contains.however, the bremsbetätigungsventil (16) of an electronic control unit (20) is actuated.the design of the bremsbetätigungsventils (16) such that the control valves without rastmittel, in addition to the stelleinrichtung must be providedin the last schaltstellung collected will be kept to a stelleinrichtung (18) of the bremsbetätigungsventils (16) so as to be trainedthat the bremsbetätigungsventil (16) at least in one of his schaltstellungen eigenstabil holdsso that the control valves without further bestromung the stelleinrichtung (18) in a previously set schaltstellung remains.