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US 5,682,740 AGranted
Diesel particulate filter apparatus
AssigneeIsuzu Ceramics Research Institute Co., Ltd.
InventorHideo Kawamura
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AssigneeIsuzu Ceramics Research Institute Co., Ltd.
InventorHideo Kawamura
Estimating the term…
In a diesel particulate filter apparatus, the surface of the fiber of a ceramic fiber material 5 such as a silicon carbide fiber material is covered with a coating layer made up of a Ba.sub.2 In.sub.2 O.sub.5, Ba.sub.3 Y.sub.4 O.sub.9 or BaLa.sub.2 O.sub.4 compound having a brownmillerite-like structure having an NO.sub.x -reducing action, and a glass layer. A filter body is constituted of a nonwoven fabric which is the randomly laminated ceramic fiber material with the coating layer on the surface of the fiber thereof. Alternatively, the diesel particulate filter apparatus may be constituted of a filter body made of a nonwoven fabric which is a randomly laminated ceramic fiber material, and a porous sinter containing the above-mentioned compound, provided that the porous sinter is disposed on the downstream side of the filter body.
A diesel particulate filter comprising:
A diesel particulate filter apparatus comprising first filter bodies constituted of nonwoven fabrics which are randomly laminated ceramic fiber materials for collecting particulates contained in the exhaust gas of a diesel engine, conductive metal nets each disposed on one side of each first filter body, and second filter bodies each disposed on the other side of each first filter body and constituted of porous sinters containing a compound having a brownmillerite structure having an NO.sub.x -reducing action.
A diesel particulate filter apparatus comprising at least one filter body for collecting particulates contained in an exhaust gas discharge from a diesel engine;
Dependencies are inferred from the claim text.