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Selective Catalytic Reduction: Exhaust aftertreatment for reducing nitrogen oxide emissions

Posted on August 01, 2011 by Dr. Holger Sinzenich, Klaus Wehler, Ralf Müller

The term Selective Catalytic Reduction (or SCR) is used to describe a chemical reaction in which harmful nitrogen oxides (NOX) in exhaust gas are converted into water (H2O) and nitrogen (N2). In combination with internal engine technologies, such as exhaust gas recirculation (EGR), extremely low nitrogen oxide emissions can be achieved with low fuel consumption.

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Selective Catalytic Reduction: Exhaust aftertreatment for reducing nitrogen oxide emissions

Engine technology

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Authors:

Dr. Holger Sinzenich
Team Leader, Systems Integration Exhaust Aftertreatment

Klaus Wehler
Team Leader, Design Exhaust Aftertreatment

Ralf Müller
Research and Technology Development, Exhaust Aftertreatment