Methods for controlling and making particle filtering devices

Details Methods for controlling and making particle filtering devices Methods for controlling and making particle filtering devices

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 11/00 (2006.01) F01N 3/023 (2006.01)

Patent

CA 2623149

The invention concerns a method for controlling the robustness of a particulate filter for use on a Diesel engine exhaust line, including the following steps which consist, after previously determining the threshold weight of soot of said filter, in loading a new filter with a soot level not less than twice and not more than three times said threshold weight of soot, then, in any order, determining the efficacy of said filter, measuring its pressure loss and comparing same to the pressure loss of the new filter, measuring its cracking level, and finally controlling its integrity after mechanical biasing. The invention also concerns a method for diagnosing the robustness of a filter.

L'invention a pour objet un procédé de contrôle de la robustesse d'un filtre à particules destiné à être employé sur la ligne d'échappement d'un moteur Diesel, comprenant les étapes consistant à, ayant au préalable déterminé la masse limite en suie dudit filtre, charger un filtre neuf avec un niveau de suie au moins égal à deux fois et au plus égal à trois fois ladite masse limite en suie, puis faire subir une régénération sévère audit filtre, puis, dans un ordre indifférent, déterminer l'efficacité de filtration dudit filtre, mesurer sa perte de charge et la comparer à la perte de charge du filtre neuf, mesurer son niveau de fissuration, et enfin contrôler son intégrité après une sollicitation mécanique. L'invention a également pour objet une méthode de diagnostic de la robustesse d'un filtre.

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