Exhaust gas cleaning device for internal combustion engine

Details Exhaust gas cleaning device for internal combustion engine Exhaust gas cleaning device for internal combustion engine

1983-03-15

1985-12-17

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

55282, 55312, 55466, 55DIG30, 60288, 60303, 60311, F01N 302

Patent

active

045585652

ABSTRACT:
An exhaust gas cleaning device for collecting and burning off particulates within exhaust gases discharged from an internal combustion engine of an automobile or the like is disclosed. The device comprises a filter member which is disposed in an exhaust gas passage of the engine for collecting particulates within exhaust gases, an electrically heating member which is disposed on or near the upstream end of the filter member for igniting and burning off the collected particulates, a by-pass passage having a flowing resistance smaller than that of the filter member, which is communicated with the upstream side and the downstream side of the filter member for flowing most of the exhaust gases without passing the filter member at the filter member regenerating time, a valve means which is disposed in the by-pass passage for controlling the exhaust gas amount flowing into the by-pass passage and the filter member by opening or closing the by-pass passage and a valve control means which controls the valve opening so as to flow a small amount of exhaust gases enough to supply the most proper amount of oxygen to the filter member for burning off the collected particulates, into the filter member when said filter member is regenerated.

REFERENCES:
patent: 4211075 (1980-07-01), Ludecke
patent: 4381643 (1983-05-01), Stark
patent: 4450682 (1984-05-01), Sato

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