| 摘要 |
<p>PURPOSE:To provide a diesel particulate after treatment device which does not cause cracking, dissolution damage and is favourable in scavenging reliabil ity and durability whatever filter temperature at the time of completion of particulate scavenging is. CONSTITUTION:In a diesel particulate after treatment device provided with a particulate scavenging filter 9, a by-pass pipe 15 for exhaust isolation at the time of regeneration, a regenerated gas supply means 16 and an ignition means 11, a temperature sensor 22 as a filter temperature detection means, a filter temperature up cooling means and a control means 18 are furnished. The control means 18 judges whether the particulate scavenging filter 9 is within a regeneration start temperature range by a signal from the temperature detection means after completion of scavenging particulates, the particulate scavenging filter 9 is raised in temperature or cooled by the temperature up cooling means, the ignition means 11 and the regenerated gas supply means 16 are actuated in the case when it comes to be within the regeneration start temperature range and are made to carry out combustive removal of particulates.</p> |
