To reduce the particulate emissions significantly PSA Peugeot Citroen has developed a particulate filter system, which is in production since June 2000. The first vehicle on the market with this fuel additive based particulate filter system is the Peugeot 607 with the 2.2 l HDI engine. PSA Peugeot Citroen intends to apply this system to most of their vehicle platforms. The system is working with a Cerium-based additive which decreases the minimum soot oxidation temperature. To perform a reliable regeneration of the particulate filter under all driving conditions it is necessary to increase the exhaust gas temperature up to the minimum soot oxidation temperature. A third (post) injection during the expansion phase leads to an increase of engine out exhaust gas temperature. Furthermore the exhaust gas temperature can be increased by a catalytic, exothermic conversion of HC and CO, which are produced by the post injection. To ensure a sufficient temperature level for regeneration also at low ambient air temperatures an additional heat exchanger in the intake system is used. Besides the overview of the particulate filter system this paper shows the kind and amount of works to apply this particulate system to different engines and vehicle platforms. The optimization of the post injection parameters to increase the exhaust gas temperature during regeneration of the particulate filter and the calibration of the regeneration manager which decides when a regeneration is necessary, will be described.
Serial application of an active particulate filter system for passenger cars
Serienapplikation eines aktiven Partikelfiltersystems für Diesel-Pkw
2001
15 Seiten, 11 Bilder, 3 Quellen
Conference paper
English
Serial application of an active particulate filter system for passenger cars
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