Apparatus and method for removing particulates in exhaust gas of

Details Apparatus and method for removing particulates in exhaust gas of Apparatus and method for removing particulates in exhaust gas of

1998-04-03

2000-07-18

Simmons, David A.

Gas separation: processes

Filtering

With cleaning of filter

95283, 95286, 552823, 55283, 55287, 55DIG10, 55DIG30, 96400, 96402, 96405, 96421, 60303, 60311, B01D 2952, B01D 2962, F01N 302

Patent

active

06090187&

ABSTRACT:
Two filters provided in an exhaust path of an internal combustion engine are used to simultaneously collect particulate in an exhaust gas and are alternately refreshed. When a refresh timing of the filters comes, a determination is made as to which of the filters has a larger accumulation amount. The plurality of filters are refreshed in an order from the filter determined as having the larger accumulation amount, and variation of accumulation amounts of particulate of the filters is corrected, so that both of the filters are refreshed within a tolerable temperature range.

REFERENCES:
patent: 5085049 (1992-02-01), Rim et al.
patent: 5458673 (1995-10-01), Kojimia et al.

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