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Engine-Independent Exhaust Gas Aftertreatment Using a Burner Heated Catalyst
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 16, 2006 by SAE International in United States
Annotation ability available
Meeting current exhaust emission standards requires rapid catalyst light-off. Closed-coupled catalysts are commonly used to reduce light-off time by minimizing exhaust heat loss between the engine and catalyst. However, this exhaust gas system design leads to a coupling of catalyst heating and engine operation. An engine-independent exhaust gas aftertreatment can be realized by combining a burner heated catalyst system (BHC) with an underfloor catalyst located far away from the engine. This paper describes some basic characteristics of such a BHC system and the results of fitting this system into a Volkswagen Touareg where a single catalyst was located about 1.8 m downstream of the engine. Nevertheless, it was possible to reach about 50% of the current European emission standard EU 4 without additional fuel consumption caused by the BHC system.
Citationzu Schweinsberg, A., Klenk, M., and Degen, A., "Engine-Independent Exhaust Gas Aftertreatment Using a Burner Heated Catalyst," SAE Technical Paper 2006-01-3401, 2006, https://doi.org/10.4271/2006-01-3401.
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