F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
F01N 3/02 (2006.01) B01D 46/24 (2006.01) B01D 53/94 (2006.01) F01N 3/021 (2006.01) F01N 3/022 (2006.01) F01N 3/023 (2006.01) F01N 3/025 (2006.01) F01N 3/031 (2006.01) F01N 3/035 (2006.01) F01N 3/08 (2006.01) F02B 23/06 (2006.01) F02M 25/07 (2006.01) F01N 3/20 (2006.01) F02F 1/24 (2006.01)
Patent
CA 2374752
The present device for purifying the exhaust gas of an internal combustion engine comprises a particulate filter 70 arranged in the exhaust system and reversing means 71 for reversing the exhaust gas upstream side and the exhaust gas downstream side of the particulate filter. The trapped particulates are oxidized on the particulate filter, and the particulate filter has a trapping wall for trapping the particulates. The trapping wall has a first trapping surface and a second trapping surface. The reversing means reverses the exhaust gas upstream side and the exhaust gas downstream side of the particulate filter so that the first trapping surface and the second trapping surface are used alternately to trap the particulates.
L'invention concerne un dispositif d'épuration des gaz d'échappement pour moteurs thermiques, comprenant un filtre particulaire (70) placé dans un système d'échappement d'un moteur, et des moyens d'inversion (71) permettant d'inverser les côtés d'échappement aval et amont dudit filtre particulaire. Les particules collectées sont oxydées dans le filtre possédant une paroi de collecte destinée à collecter lesdites particules. Ladite paroi de collecte possède une première et une seconde surfaces de collecte. Du fait que les côtés d'échappement aval et amont sont inversés à l'aide des moyens d'inversion, les première et secondes surfaces de collecte de la paroi de collecte sont alternativement utilisées pour collecter les particules.
Hirota Shinya
Itoh Kazuhiro
Kimura Koichi
Nakatani Koichiro
Tanaka Toshiaki
Borden Ladner Gervais Llp
Toyota Jidosha Kabushiki Kaisha
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