Patent ID: 8801818

Claim:
A method for cleaning and checking a particle filter of a motor vehicle, comprising: removing the particle filter from the motor vehicle; a first step in which soot particles that have collected in the particle filter are burnt off after the particle filter is removed from the motor vehicle; and a second step in which ash located in the particle filter is blown out using compressed air after the particle filter is removed from the motor vehicle, wherein prior to the first step the particle filter is subjected to a first air mass flow of a first magnitude and a first pressure is measured, subsequently the particle filter is subjected to a second air mass flow of a second magnitude and a second pressure is measured, a first pressure difference is formed between the first measured pressure and the second measured pressure, wherein subsequent to the second step the particle filter is subjected to a third air mass flow of the first magnitude and third pressure is measured, subsequently the particle filter is subjected to a fourth air mass flow of the second magnitude and a fourth pressure is measured, a second pressure difference is formed between the third measured pressure and the fourth measured pressure, wherein the first magnitude of the first and third air mass flows is different than the second magnitude of the second and fourth air mass flows, wherein whether the cleaning is successful is determined by reference to the first and second pressure differences.