Integration of the Three-Way Functionality into the Gasoline Particulate Filter – A New Technology for the Closed-Coupled Exhaust Aftertreatment

Authors

Dr.-Ing. S. Kunert, Dipl.-Ing. W. Müller, Dr.-Ing. S. Musa, Dr. S. Spiess, Umicore AG & Co. KG, Hanau-Wolfgang; Dipl.-Ing. L. Hentschel, Dipl.-Ing. L. Schlüter, Dipl.-Ing. M. Thiele, Volkswagen AG, Wolfsburg

Year

2018

Print Info

Fortschritt-Berichte VDI, Series 12, No 807

Summary

New global legislations necessitate the reduction of particulate emissions even in gasoline engines. The gasoline particulate filter is a potential exhaust gas cleaning concept for such a reduction. When a catalytically active gasoline particulate filter is used, the traditional gaseous pollutants like HC, CO and NOx are also converted apart from the particles.
This article will discuss the special challenges that arise in the development of a gasoline particulate filter with catalytic activity for installation at a position close to the engine. The field, in which the specially developed catalytic converter technology is used, ranges between the high three-way activity, high thermal load, high filtration output and the lowest possible dynamic pressure.
An innovative exhaust gas after-treatment system or serial production was developed in close cooperation; it is used in the new four-cylinder TSI engine family of Volkswagen in different vehicles for the EU6 AG legislation.