Robert Boschgmbh

Harald Koehnlein

Bernhard Kamp

Enno Baars

Henrik Schittenhelm

Herbert Schumacher

Thomas Baumann

Thomas Marc Kammerer

A procedure for operating a collecting particle sensor, which is provided with measuring phases, during which particles that are contained in an off-gas stream accumulate on a measuring route, and a device for implementing this procedure are submitted. Protection phases are provided, during which at least one measure for diminishing the accumulation of particles on the measuring route is adopted. The measure according to this invention prevents a decrease of the sensitivity of the particle sensor over a long period of time.

Procedure for operating a collecting particle sensor and device for implementing this procedure

A procedure for operating a particle sensor that is arranged downstream after a particle filter, at which an ash contamination can occur, and a device for implementing the procedure, are suggested. A remaining operating time determination determines the remaining operating time of the particle sensor related to an ash contamination. Alternatively or additionally the remaining operating time determination provides a correction signal, with which the sensitivity loss of the particle sensor caused by the ash contamination can be considered.

Procedure for operating a particle sensor that is arranged downstream after a particle filter and device for implementing this procedure

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Stuttgart, Germany

Harald Koehnlein