Exhaust gas purifying apparatus built-in to a muffler for a dies

Details Exhaust gas purifying apparatus built-in to a muffler for a dies Exhaust gas purifying apparatus built-in to a muffler for a dies

1988-12-28

1990-04-17

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

55276, 55283, 55302, 55466, 55DIG30, 60296, 60303, 60311, 181231, 181254, F01N 302

Patent

active

049168975

ABSTRACT:
An exhaust gas purifying apparatus comprising a first and a second casings having expansion chambers, respectively, a third casing arranged between the first and second casings to form a passage therebetween, an inlet pipe introducing the exhaust gas into the first expansion chamber, and an outlet pipe discharging the exhaust gas from the second expansion chamber, whereby a muffler is constituted. The apparatus also comprises a filter arranged in the third casing to trap particulates in the exhaust gas, and a heater arranged adjacent to the filter on the side of the second expansion chamber to burn the particulates deposited on the filter, to regenerate the filter. A flow control unit, comprising a bypass and a valve therein, is arranged such that the exhaust gas normally flows through the filter and the heater, and when the filter is regenerated, at least a part of the exhaust gas flows in reverse through the heater and the filter. This exhaust gas purifying apparatus is built-in to the muffler.

REFERENCES:
patent: 3110300 (1963-11-01), Brown
patent: 3841841 (1974-10-01), Torosian
patent: 4264344 (1981-04-01), Ludecke
patent: 4759781 (1988-07-01), Olson

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