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

A device, especially at least one customized controller for the implementation of a method of operating a particle sensor arranged downstream after a particle filter, wherein an ash contamination of the particle sensor can occur, the method comprising:

• determining a remaining operating time of the particle sensor related to the ash contamination via a remaining operating time determination, whereby a correction signal is provided such that a sensitivity loss of the particle sensor due to the ash contamination is considered.

A control program for the implementation of steps, if the control program runs on at least one customized controller, for executing a method of operating a particle sensor arranged downstream after a particle filter, wherein an ash contamination of the particle sensor can occur, the method comprising:

• determining a remaining operating time of the particle sensor related to the ash contamination via a remaining operating time determination, whereby a correction signal is provided such that a sensitivity loss of the particle sensor due to the ash contamination is considered.

A control program product for the implementation of steps, if the control program product code is saved on a machine readable device and if the control program product runs on at least one customized controller, for executing a method of operating a particle sensor arranged downstream after a particle filter, wherein an ash contamination of the particle sensor can occur, the method comprising:

• determining a remaining operating time of the particle sensor related to the ash contamination via a remaining operating time determination, whereby a correction signal is provided such that a sensitivity loss of the particle sensor due to the ash contamination is considered.