Method for monitoring a particle filter

Details Method for monitoring a particle filter Method for monitoring a particle filter

2005-06-01

2008-03-11

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S277000, C060S311000, C073S118040

Reexamination Certificate

active

07340887

ABSTRACT:
A particle filter is monitored with a sequence of steps. A pressure loss at the particle filter is measured. The volumetric flow of exhaust gas is acquired and a filter load value is calculated from the pressure loss and the volumetric flow of exhaust gas. The filter load value is recorded as a function of a drive parameter and the filter load value is differentiated with respect to the drive parameter. The differentiation of the filter load allows a particle filter breakdown to be deduced when the differentiation is less than or equal to zero.

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