| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve the ozone utilization factor by preventing useless flow-out of ozone in an exhaust emission control device. <P>SOLUTION: This exhaust emission control device provided in an exhaust passage wherein exhaust gas of an internal combustion engine passes through includes an exhaust emission control unit (16) for collecting particulate matter included in the exhaust gas. An ozone generating means (20) for generating ozone and an ozone adsorbent (32), into which the ozone generated by the ozone generating means (20) flows into, are arranged upstream of the exhaust emission control unit (16). The ozone adsorbent (32) collects ozone, or desorbs the collected ozone. Further, the exhaust emission control device includes a saturation detecting means for predicting or detecting that ozone is adsorbed to the saturated state, and in the case wherein a state that the ozone adsorbent (32) is saturated is detected, the exhaust emission control device stops generation of ozone by the ozone generating means (20) and adsorption of ozone by the ozone adsorbent (32). <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
