Ceramic honeycomb filter for purifying exhaust gases

Details Ceramic honeycomb filter for purifying exhaust gases Ceramic honeycomb filter for purifying exhaust gases

1988-01-25

1989-08-15

Nozick, Bernard

Gas separation

Specific media material

Ceramic or sintered

55DIG30, 60311, 422180, B01D 4600

Patent

active

048570893

ABSTRACT:
A ceramic honeycomb filter for purifying exhaust gases from combustion engines includes a ceramic honeycomb structure formed by extruding and having a number of through-passages alternately closed at their ends by ceramic closure members. The through-passages formed by partition walls for capturing fine particles in the exhaust gases accumulated on the partition walls. The ceramic honeycomb filter comprises porous ceramic layers provided on the partition walls over a distance of 1/10-8/10 of an effective length of the filter from outlet ends of said through-passages for the exhaust gases.

REFERENCES:
patent: 4340403 (1982-07-01), Higuchi et al.
patent: 4364760 (1982-12-01), Berg et al.
patent: 4364761 (1982-12-01), Berg et al.
patent: 4390355 (1983-06-01), Hammond, Jr. et al.
patent: 4404007 (1983-09-01), Tukao et al.
Patent Abstracts of Japan, vol. 11, No. 196 (JP-A-62 20 613).
Patent Abstracts of Japan, vol. 6, No. 33 (JP-A-56 148 607).

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