Patent ID: 6090187
Filing Date: 2000-07-18
Classification: F01N,Y10S

Abstract:
An apparatus for removing particulate from an exhaust gas exhausted from an internal combustion engine, comprising:a plurality of filters provided in parallel in an exhaust path of the internal combustion engine, for simultaneously collecting particulate in the exhaust gas;total amount detection means for detecting a first value indicative of a total amount of the particulate collected by said plurality of filters;a plurality of valve means provided to correspond to said plurality of filters, for independently opening/closing the exhaust path to respective filters;reclaiming timing determination means for determining a timing to reclaim said plurality of filters by comparing the first value with a first predetermined value;accumulation amount detection means for detecting a second value indicative of an amount of the particulate collected by each of at least one of said plurality of filters, said at least one of said plurality of filters being at least one filter but less than the total number of said plurality of filters;reclaiming order determination means for determining a filter, among said plurality of filters, that has accumulated the largest amount of the particulate by comparing the second value with a second predetermined value; andreclaiming means for reclaiming, prior to other of said plurality of filters, said filter determined by said reclaiming order determination means and closing the valve means corresponding to said filter determined to be reclaimed during regeneration.