2020 | OriginalPaper | Buchkapitel
CatVap® – a new heating measure for exhaust aftertreatment system
verfasst von : Robert Szolak, Bernd Danckert, Alexander Susdorf, Paul Beutel, Katharina Pautsch, Christian Ewert, Florian Rümmele, Anand Kakadiya, Achim Schaadt
Erschienen in: Heavy-Duty-, On- und Off-Highway-Motoren 2019
Verlag: Springer Fachmedien Wiesbaden
Today’s challenge is to almost comply with the emission limits 100% in Real Drive Emission (RDE) behavior, especially in the cold season, the so-called “cold city rides”, which are characterized by the fact that during the stop and go rides in the city at no time a sufficient temperature for an efficient exhaust aftertreatment is reached. The future Euro6+ or certainly the expected new Euro7 limit values will therefore only be achieved with suitable effective thermal heating, heat retention as well as regeneration measures for the exhaust aftertreatment (EAT) system.CatVap® is an easily scalable system for both diesel and gasoline engines that provides highly efficient thermal energy, simply from fuel (diesel, gasoline, synthetic fuels), coupled into the exhaust system and thus provides the thermal energy required for exhaust gas conversion. It is fast, highly dynamically controllable, can be used as a catalytic burner for rapid heating during a cold start of the engine system. Furthermore, CatVap® can then be used as a light-off accelerator (by fuel tailoring to synthesis gas (syngas) and shorter alkenes) for the Diesel Oxidation Catalyst (DOC) and the Selective Catalytic Reduction (SCR) catalyst. CatVap can also be used for the diesel particulate filter, for its effective active regeneration or temperature control for continuous regeneration.The CatVap system is an important key enabler for near zero-emission internal combustion (IC) engines that can be demonstrated in the near future.