Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Florian Rümmele

Robert Szolak

Alexander Susdorf

A method for exhaust gas post treatment is provided, comprising the following steps: a) providing a nitrogen oxide-containing raw exhaust gas, b) introducing the nitrogen oxide-containing raw exhaust gas into a catalytic evaporator (), c) introducing a fuel into the catalytic evaporator (), whereby a converted fuel is obtained, d) mixing urea with the converted fuel, and e) feeding the mixture obtained after step d) into an exhaust gas post treatment system (). Alternatively or in addition, a device may be provided for exhaust gas post treatment.

Device and method for exhaust gas post treatment and use thereof

A method is described for operating a catalytic evaporator (), with the step: feeding fuel and an oxidant to the catalytic evaporator, which method is distinguished by the fact that (a) the feed of the fuel is performed as a pulsed feed, and/or (b) the feed of the oxidant is performed as a pulsed feed.

Method for operating a catalytic evaporator and uses of the method

A method for exhaust gas aftertreatment is provided, the method comprising: a) providing a nitrogen oxide-containing raw exhaust gas, b) introducing the nitrogen oxide-containing raw exhaust gas into a catalytic evaporator (), c) introducing a urea solution and a fuel into the catalytic evaporator (), as a result of which a reducing agent is obtained, and d) supplying the reducing agent to an exhaust gas aftertreatment system (). Alternatively or in addition, a device for producing a reducing agent may be provided, a reducing agent produced with same, and the use of these objects.

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Freiburg, Germany

Florian Rümmele