Exhaust particle removing system for internal combustion engine

Details Exhaust particle removing system for internal combustion engine Exhaust particle removing system for internal combustion engine

1990-01-22

1991-11-26

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60280, 60303, 422169, F01N 302

Patent

active

050673203

ABSTRACT:
An exhaust particle removing system for an internal combustion engine includes two filters disposed within an exhaust passage in series for trapping particles suspended in exhaust gas. The system also includes combustion equipment which is disposed near the inlet of the upstream filter, and serves to burn off the particles deposited on the upstream filter. The downstream filter is coated with a catalyst. The downstream filter is arranged to be separate from the upstream filter by a predetermined distance so that the particles deposited on the downstream filter can be burned off by means of an elevated temperature of gas passing through the upstream filter. The length of each of the filters is essentially equal to or less than the diameter of the inlet of the respective filter.

REFERENCES:
patent: 4054418 (1877-10-01), Miller et al.
patent: 4934142 (1990-06-01), Hayashi

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