Motor vehicle exhaust particle filter regeneration procedure uses calculated parameter representing operation conditions of regenerator

摘要

The procedure, employing a particle filter regenerator that is set in operation before the filter load reaches a pre-set threshold level, uses a calculated parameter representing the operation conditions of the regenerator, and produced while the vehicle is running. The parameter is based on the relationship between the flow of exhaust gases from the vehicle engine (10) and the mass of soot burned during the regenerator's operation over a predetermined period of time, and the operation of the regenerator is controlled as a result of a comparison between the parameter's value and at least one threshold value stored in the memory of an engine management computer (34).