Robert Boschgmbh

Ulrich Meingast

Rainer Haeberer

Wolfgang Ripper

Johannes Schaller

Wolfgang Klenk

Markus Buerglin

Martin Kiontke

Achim Knittel

Hartmut Lueders

Dirk Heilig

Dirk Von Meduna

Tobias Hoeffken

Ulf-Peter Schmeling

Goetz Flender

Johannes Dehn

Torsten Eggert

Felix Birkhold

Max Leonhard

James Patchett

Andreas Kerst

Julian Lillich

Helko Klinger

Elvis Spahic

A medium supply system of an exhaust gas cleaning device for treating the exhaust gas of an internal combustion engine comprising a storage tank and a supply line which is connected to the storage tank for supplying the medium to a dosing unit connected to an exhaust pipe and to a recycling line for recycling the medium to the storage tank. The supply line and/or the recycling line are provided with at least one conduit area comprising at least one first and second parallel partial channels for the medium circulation, wherein said partial channels exhibit different insulation properties. An exhaust gas cleaning device comprising the inventive supply system and a method for the operation thereof are also disclosed.

Supply system for a medium for treating exhaust gases of an internal combustion engine; exhaust gas cleaning device; and a method for operating a supply system

The invention relates to a metering system for injecting pollutant reducing medium into an exhaust system includes a metering pump, and at least one self-opening nozzle for injecting fluidic media into the exhaust gas system. The nozzle is self-opening with a needle chamber, a nozzle needle and a spring chamber with a spring element. The needle chamber and spring chamber are separated by a flexible membrane which prevents fluidic media from escaping from the needle chamber into the spring chamber, and also permits an excess pressure to prevail in the needle chamber in relation to the spring chamber, causing the nozzle needle to be displaced in opposition to a spring force, thus releasing a nozzle opening. The inventive metering system is cost-effective, robust and can also be used at low operating temperatures.

Metering system for reducing pollutants in motor vehicle exhaust gases

A method of and an apparatus for posttreatment of an exhaust gas from an internal combustion engine, in which a substance to be mixed with the exhaust gas is sprayed in metered quantities into an exhaust gas line through which the exhaust gas flows. The substance is sprayed onto an impact plate disposed inside the exhaust gas line.

Method and apparatus for posttreatment of an exhaust gas from an internal combustion engine

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Stuttgart, Germany

Ulrich Meingast