| 摘要 |
<p>PURPOSE:To estimate the amount of collected particulates highly accurately based on a plurality of factors, and to prevent damaging a filter by monitoring the heating condition of a reactivation heater. CONSTITUTION:An upstream pressure sensor 7, a temperature sensor 6, a heater 11, a filter 2, a downstream side pressure sensor 17 are stored in this order from the upstream side to the downstream side in a case 1. The discharge tube 3 of a diesel engine 20 is connected to the upper end wall of the case 1 and is connected to the outlet of the blower 13 of an air transmitting tube 10 divided from the middle of the air transmitting tube 3, while an air flow sensor is provided on the inlet of the air transmitting tube 10. A rotation speed sensor 18 is provided on a diesel engine 20. The heater 11 and the blower 13 are controlled by a controller 8 based on each detection signal from each sensor 6, 7, 17, and 18. The drop in the voltage of a low resistance 21 for detecting the current of the heater 11 is judged by the controller 8.</p> |
