Patent ID: 7065959
Filing Date: 2006-06-27
Classification: F01N,F02B,F02D,F02M,Y02T

Abstract:
1. A regeneration control device which regenerates a filter for trapping particulate matter in exhaust gas from an engine, the filter supporting a catalyst which oxidizes unburnt components in the exhaust gas, the regeneration control device comprising: a heat generating device which raises a bed temperature of the filter and burns particulate matter trapped by the filter, in order to regenerate the filter, a first temperature sensor which detects a filter inlet exhaust gas temperature; and a microcomputer programmed to: compute a filter outlet exhaust gas temperature, not including temperature rise due to oxidation reaction of unburnt components based on the detected inlet exhaust gas temperature, compute the filter bed temperature based on the detected inlet exhaust gas temperature and computed outlet exhaust gas temperature, compute a temperature rise due to oxidation reaction of unburnt components, correct the bed temperature based on the computed temperature rise, and control the heat generating device based on the corrected bed temperature.