Downsizing of the EuroVI Exhaust Aftertreatment Components to fit into the EuroIII Silencer

Authors

Dipl.-Ing. A. Döring, Dipl.-Ing. G. Emmerling, Dr.rer.nat. D. Rothe, MAN Truck & Bus AG, Nuremberg

Year

2012

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 735

Summary

Apart from complying with the EuroVI limits it is a major challenge to arrive at a compact, low-cost and robust overall system consisting of the engine and the exhaust gas aftertreatment system. The goal of the examinations, which were carried out at the advanced development department, was to accommodate such a system, comprising an SCR catalytic converter and a particulate filter, in the space available in the MAN TGA silencer for EuroIII, which did not yet contain any equipment for exhaust-gas aftertreatment. This was achieved by several measures: on the one hand the particulate filter was given an SCR-active coating, while on the other the urea decomposition system was realised in the form of a hydrolysis catalyst arranged parallel to the turbocharger and a close coupled NO oxidation catalyst.

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