MB E320 Emission Control System: Field Aging and Onboard Monitoring

Owen  Bailey, Umicore

Up to now, agings and evaluations of advanced diesel emission control systems have been developed based on a variety of assumptions related to the architecture and placement of the components, their associated operating window and regeneration requirements, and engine performance features affecting exhaust composition and temperature.  With this in mind, a production 2007 Tier 2 Bin 8 MB E320 Bluetec featuring a DOC+LNT+CDPF+SCR system was equipped with an onboard data logger system allowing a variety of exhaust system parameters to be studied during real world operation.  The results of this investigation which includes LNT and CDPF regeneration conditions and frequencies, as well as the performance of the system on the chassis dynomometer will be discussed.

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