FILTER APPARATUS FOR REMOVING PARTICLE FROM GAS

Japanese Patent JPS62216617

A

Filtering apparatus for removing combustible particles from a gas, e.g. carbon and hydrocarbon particles from the exhaust gases of a diesel engine, comprises at least one filter element 23 which is made of fibrous material and is electrically conductive. To remove trapped particles from the filter element 23 and thereby regenerate the filter element, electrical power is supplied to the filter element to heat it to the point at which the carbon and hydrocarbon particles combust. One or a plurality of such filter elements 23 may be provided in a housing 20 in the exhaust gas system of a diesel engine with the filter elements exposed in parallel to exhaust gases. For regeneration, all filter elements may be simultaneously regenerated while exhaust gases are either exhausted direct to the air or through a similar filtering apparatus. Alternatively the filter elements may be regenerated sequentially so that at least some of the filter elements are always effective as filters. During regeneration exhaust gases are substantially excluded from a filter element undergoing regeneration and this may be effected by preventing flow of the exhaust gases to the filter element while it is being regenerated or by increasing the pressure downstream of the filter element to prevent exhaust gases flowing through the filter element. Each filter element 23 is preferably annular and arranged so that exhaust gases flow through the wall in a radially inward direction.

JIYON KURISUTOFUAA HADOSON
SHIYOKU SANTORII
IAN MAATEIN JIYAKUSON

JP4508887A

September 24, 1987

February 27, 1987

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POORASU EREMENTO HIITEINGU LTD

B01D39/14; B01D39/20; B01D46/00; B01D46/24; B01D46/42; F01N3/02; F01N3/025; F01N3/027; F01N3/035; F02B3/06; (IPC1-7): B01D39/14; B01D39/20; B01D46/24; B01D46/42; F01N3/02

Kazuo Sato (3 others)

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