Patent ID: 6681566
Filing Date: 2004-01-27
Classification: B01D,F01N,F02B,F02F,F02M,Y02A,Y02T

Abstract:
An exhaust purifying apparatus of an internal combustion engine, comprising:a filter that temporarily traps a plurality of particulates contained in an exhaust gas discharged from a combustion chamber, the exhaust gas is selectively fed into the filter from at least one of a first side and a second side of the filter, the filter removes the particulates by oxidation; a valve having a switching operation that alternately switches between a first flow passage to feed the exhaust gas from the first side of the filter and a second flow passage to feed the exhaust gas from the second side of the filter, the valve having a bypass mode in which the exhaust gas bypasses the filter; and a controller that: inhibits the valve from being positioned in the bypass mode while the exhaust gas has a relatively small air-fuel ratio flowing into the filter, and allows the valve to be positioned in the bypass mode while the exhaust gas has a relatively large air-fuel ratio flowing into the filter.