Exhaust gas purifying apparatus for diesel engine, controls opening degree of exhaust gas recirculation switch valve such that temperature of exhaust gas is set to temperature suitable for regeneration of particulate filter

摘要

A controller controls an opening degree of exhaust gas recirculation (EGR) switch valve (74) based on temperature of intake air and load state of engine, such that the temperature of the exhaust gas which is supplied to a diesel particulate filter (5) is set to a temperature suitable for the regeneration of particulate filter arranged in an exhaust gas passage (3).