| 摘要 |
<p>PURPOSE:To detect any opening/closing trouble of an opening/closing valve for opening/closing a space between an intake means and an exhaust pipe with a simple structure. CONSTITUTION:An intake air flow rate is accurately controlled by feedback- controlling an air intake means 13 by detecting an intake air flow rate of the air intake means 13 at the time of regenerating a filter 2. Additionally, opening trouble of an opening/closing valve 16 is discriminated by a quantity of the intake air flow rate. A temperature in the vicinity of the filter is detected during a period until a particulates are ignited by utilizing a temperature sensor 6 for detecting exhaust gas temperature which is used for calculation of a particulate collective quantity, after electrification to the air intake means 13 at the initial time of regeneration.</p> |
