Diesel particulate filter apparatus

Details Diesel particulate filter apparatus Diesel particulate filter apparatus

1997-01-28

1998-09-22

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

55466, 55486, 55523, 55DIG30, 60311, F01N 302

Patent

active

058097775

ABSTRACT:
In this DPF apparatus, the filters have large trapping areas and three-dimensionally and efficiently trap particulates contained in the exhaust gas thereby cleaning the gas and reducing the size of the apparatus. The DPF apparatus has the main filter installed in the case incorporated into the exhaust system, the sub-filter arranged in the central portion of the main filter, and the bypass cylinder interposed between these filters. The bypass valve is installed on the exhaust gas inflow side of the sub-filter to open and close the inflow port of the sub-filter. The main filter and the sub-filter are made from ceramics porous sheet filters, or comprise a nonwoven cloth made of silicon carbide fibers and a woven cloth made of ceramics long fibers chosen from Si-C and Si-C-Ti-O long fibers and arranged adjacent to and downstream of the nonwoven cloth. The mesh heaters are laminated over the main filter on the exhaust gas inflow side.

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patent: 5409669 (1995-04-01), Smith et al.
Kusuda, Tasao et al, Patent Abstracts of Japan, Diesel Exhaust Gas Cleaning Device, vol. 12, No. 190, Mar. 6, 1988.

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