Soot burn-off filter for diesel engines

Details Soot burn-off filter for diesel engines Soot burn-off filter for diesel engines

1989-02-16

1990-01-23

Woo, Jay H.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

55461, 55466, 55484, 55523, 55DIG30, 60299, 60311, F01N 310, F01N 302, B01D 3920

Patent

active

048957070

ABSTRACT:
Meander-shaped exhaust gas ducts pass through a soot burn-off filter made of porous ceramic filter material. Catalytically coated blind ducts branch from each of the outer bends to receive and combust solid combustion residues from the exhaust gases. The residual gases produced in the blind ducts by the oxidation of the combustion residues pass through the filter material into adjacent discharge ducts and are transported from there to the outside of the filter. In this way the exhaust gas ducts remain largely free of solid combustion residues, display no clogging phenomena and therefore keep the exhaust gas backpressure low. This improves the starting behavior of an engine, achieves more favorable warm-up behavior and has a positive influence upon the response behavior of an exhaust gas turbocharger.

REFERENCES:
patent: 297436 (1884-04-01), Ortman et al.
patent: 502071 (1893-07-01), Gale
patent: 4466817 (1984-08-01), Faas et al.
"Automobile Revue Year 82", No. 44; Oct. 29, 1987, pp. 41.sup.(+).

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