Robert Boschgmbh

Frank Ilgner

Marc Bareis

Michael Nau

Horst Harndorf

Manfred Ruoff

Nikolaus Benninger

Norbert Breuer

Markus Gloeckle

Peter Riegger

Andreas Genssle

Thorsten Raatz

Ralf Wegst

Nils Steinbach

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

A dosing mechanism for fuels, particularly for the input into a chemical reformer to obtain hydrogen, has a metering-in device for metering fuel into a supply line, which opens out at at least one dosing aperture into a transporting line transporting a tempered material flow. A holding device for accommodating the metering-in device has an insulating body which thermally insulates the metering-in device from the transporting line that transports the tempered material flow.

Dosing device

The invention relates to a procedure for controlling the reducing agent in an exhaust gas post-processing system of a combustion machine with an exhaust gas duct, in which an SCR catalytic converter is provided in the direction of flow of the exhaust, wherein a reducing agent generation system has an NOand CO/Hgeneration unit,, an oxidation catalytic converter and a combined NOstorage / ammonia generation unit in the standard gas route of the reducing agent generation system, and, in order to reduce nitrogen oxide, ammonia is added as a reducing agent in front of the SCR catalytic converter by the reducing agent generation system, wherein source materials for the generation of ammonia are at least intermittently added to the NOand CO/Hgeneration unit via a fuel supply line and via an air supply line, wherein during the fat phase the air/fuel composition is changed in front of the oxidation catalytic converter in the form of a lambda modulation for a lambda value. It can thus be achieved that, in pulse mode, a high H/CO yield can be achieved with a simultaneously low HC slip and the higher HC penetrations associated with the natural aging of the catalytic converter and the decreasing H/CO yields are compensated. Influences resulting from the reactor geometry of the oxidation catalytic converter can be influences or compensated with the procedure in terms of its drive-away characteristic.

Procedure for controlling the reducing agent in an exhaust gas post-processing system

An atomization system for fuels, particularly for charging a chemical reformer for obtaining hydrogen, features at least one metering device, accommodated in a supporting device, for metering fuel into a temperature-adjusted substance stream, which introduces the fuel directly into the temperature-adjusted substance stream without the interpolation of a supply line.

Atomizer device

An arrangement for supplying liquid media to consumers of a fuel cell system having a feed pump is suggested which is less complex compared to known arrangements. This is achieved in that controllable metering valves () are provided between the feed pump () and the respective consumers.

Device for supplying the consumers of a fuel cell system with liquid media

Atomizing nozzle for introducing a gas/liquid mixture into a chemical reformer to produce hydrogen, having at least one gas supply line () for a gas stream (), at least one liquid supply line () and at least one outlet () for the atomized gas/liquid mixture as well as a first chamber () into which the liquid supply line () empties, with the chamber () having a chamber wall () that forms a lip () at the outlet end, on both sides of which a separate gas flow () is supplied.

Atomizing nozzle

An apparatus for delivering at least two liquid media to consumers of a fuel cell system, with a feed pump is made less complicated than known apparatuses in that at least one pressure transmission unit between the at least two media is provided with at least one pressure transmission element, which has at least two pressure faces for pressure imposition that communicate with the liquid media.

Device for supplying at least two liquid media to consumers of a fuel cell system

A metering unit for metering liquid and/or gaseous educts by means of a feed pump for a fuel cell system, including at least one lead line for delivering an educt flow, at least one control piston, and a differential pressure valve for regulating the educt flow; the differential pressure valve has a regulatable throttling cross section, which is variable automatically, as a function of a flow pressure dictated by the control piston, in order to regulate the educt flow. The lead line leads to the control piston, and between the control piston and the differential pressure valve a first and a second connecting line are provided.

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Stuttgart, Germany

Frank Ilgner