Robert Boschgmbh

Nils Steinbach

Helmut Schneider

Werner Hess

Horst Harndorf

Christof Ott

Marc Bareis

Frank Ilgner

Ianislav Krastev

Ruediger Block

Steffen Strauss

Uwe Kulow

A device is described for controlling a hydraulic accumulator of a hydraulic system, for example a vehicle transmission, having a valve device which may connect and disconnect an accumulator-side port of the device to and from a system-side port, the valve device including at least one first check valve which is situated hydraulically between the accumulator-side port and the system-side port, and which is blocking in the direction of the system-side port, the valve device also including an electrically actuated control valve which is situated between a control port of the first check valve and the accumulator-side port in such a way that the control valve may hydraulically unblock the first check valve, using the pressure prevailing at the accumulator-side port.

Device for controlling a hydraulic accumulator of a hydraulic system

The invention relates to a device and a method for producing an operating medium for a motor vehicle, especially for use in the exhaust gas post-treatment of the motor vehicle. According to said method, an operating medium is produced from an initial product and air using a catalyst device. Said initial product is heated and mixed with air and the heated mixture of initial product/air is fed to the catalyst device. A part of the initial product is converted to the gaseous phase by means of a preheating element and is entrained by a stream of air when leaving the preheating element, said stream of air leading to a combustion chamber. The method allows to efficiently produce an operating medium, especially a reducing agent for regenerating NOstorage catalysts.

Device and method for producing an operating medium for a motor vehicle

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Bietigheim-Bissingen, Germany

Nils Steinbach