Robert Boschgmbh

Daniel Konrad

Jens Schrader

Bertram Bauer

Wolfgang Paessler

The invention relates to a pneumatic open- and closed-loop control apparatus () for flows of pressure fluid, having one inlet conduit (), two outlet conduits (), and one venting conduit (), and also having a valve piston () mediating between these conduits and mounted in a valve chamber (), and to a method for open- and closed-loop control of flows of pressure fluid. It is proposed that by means of a pneumatically driven valve piston (), with a predeterminable time constant, one outlet conduit () each of the pneumatic open- and closed-loop control apparatus () is connected to the single inlet conduit (), while the other outlet conduit is simultaneously connected to the venting conduit ().

Device and method for the pneumatic control, and regulation of hydraulic fluid flows

The invention creates a vehicle pneumatics overpressure regulating circuit of a supply device of a pneumatic consumer in a vehicle with an operating pressure. The overpressure circuit has a compressed air source , which furnishes compressed air for the consumer ; a pressure switch , by means of which the compressed air source is turned on and/or off to supply the consumer with compressed air; and a supply line , by way of which compressed air can be carried from the compressed air source to the consumer . The pressure switch can be subjected to a measured pressure via a pneumatic measurement line , which is separate from the supply line, and this measured pressure characterizes a state of the operating pressure of the consumer. As a result, extremely precise regulation of the requisite operating pressure is successfully achieved.

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Karlsruhe, Germany

Daniel Konrad