| 摘要 |
PROBLEM TO BE SOLVED: To effectively purify a suspending particulate such as soot contained in exhaust emission without causing blinding of a filter. SOLUTION: The suspending particulate in the exhaust emission of a combustion engine is collected using the heat resistant filter, simultaneously the particulate is burnt on the filter. Judging the necessity of temperature increasing of the heat resistant filter, when temperature increasing is required, dynamic pressure to the filter is increased. In the case where temperature rise of the filter is required, various cases are considered such as lowering of exhaust emission temperature or a touch of blinding of the filter, or the like. If dynamic pressure to the heat resistant filter is made to increase, temperature of the filter can be increased, then it is possible to purify the particulate effectively without the occurrence of blinding of the heat resistant filter. |
