| 摘要 |
<p>PURPOSE:To suppress generation of crack and melting loss caused by excessive temperature rise of a filter and prevent deterioration of regeneration efficiency by providing a control means which carries current an electrothermal means and an intake means based on input of regeneration command and controls an intake flow rate to be a target value. CONSTITUTION:A motor M which drives a heater 11 and a blower 13 is controlled by means of a controller 8. An output signal from an engine speed sensor 18 installed on a diesel engine 20 is output to a controller 8. The controller 8 is provided with an I/O interface and an A/D converter housing microcomputer, controls switches 55, 56 for controlling the heater 11 and the blower 13, and lights an abnormality alarm lamp 9 at the occurrence time of abnormality. The controller 8 accurately controls a flow rate of intake of the blower 13 to a target level through duty ratio controlling of voltage to be applied to the blower driving motor M based on a signal of an air flow rate sensor 15. It is therefore possible to suppress generation of crack and melting loss caused by excessive temperature rise of a filter, and suppress deterioration of regeneration efficiency.</p> |
