New Approaches and Development Methods to Minimize NO x - Emissions of Diesel Engines

Authors

Prof. Dr. Bernhard Geringer, Dipl.-Phys. Simon Fischer, Assoc. Prof. Dr. Peter Hofmann, Dr. Thomas Lauer, Dipl.-Ing. (FH) Lukas Möltner, Dipl.-Ing. Bernhard Schneeweiss, Dipl.-Ing. Philipp Teiner

Year

2010

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 716

Summary

A more and more restrictive emission legislation for Diesel engines will require a significant decrease of nitric oxide (NO x ) emissions for Diesel powered vehicles in the future. At the Institute for Powertrains and Automotive Technology (IFA) of the Vienna University of Technology various methods are being investigated that have the potential to enable the required improvements. • For the Selective Catalytic Reduction an optimal preparation of ammonium in the exhaust system is a significant criteria for an efficient decrease of NO x emissions. Investigations were carried out with most recent measurement techniques, i.e. spray analyses with laser diffraction, wall wetting with infrared thermal imaging and the uniformity with FTIR-spectroscopy. Parallel the ammonia preparation was predicted by means of numerical CFD-simulations.

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