Operation Characteristics of the Ceramic Diesel Particulate Trap during Forced Regeneration 870252

The oxidizing behavior of the ceramic diesel particulate trap Corning EX 47 is examined under forced regeneration by exhaust gas throttling, based on a trap loading model, assuming soot accumulation from channel outlet towards inlet. The required conditions which may lead to an extended life of the trap are investigated. It is deduced that regeneration of a trap, even totally loaded, is possible, provided that exhaust temperature does not exceed 650°C and mass flow through the trap is higher than a lower critical value.


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