| 摘要 |
<p>In a diesel particulate filtering device 1A, 1B which is provided with a diesel particulate filter units 10, 20, 30 for cleaning exhaust gas, and in which cleaning of the exhaust gas and the recovery thereof are performed, diesel particulate filter controllers 60, 62 for determining a recovery time based on detected values PI, PO0, PO1, PO2 of exhaust pressure sensors 51 to 55 in an upstream side of said diesel particulate filter units 10, 20, 30 and a downstream side thereof are provided with determination-value update means 60a, 62a resetting determination values R0, R1, R2 for determining a recovery time by comparing said detected values, PO0, PO1, PO2 with a standard exhaust pressure value P0. According to this constitution, the determination values R0, R1, R2 for determining the recovery time can be corrected simply by using determination-value update means 60a, 62a without changing contents of a control program when mounting it on a motor vehicle and coping with variations in output of the pressure sensors 51 to 55 due to time aging and so forth.</p> |
