| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust emission control device of a compact structure. SOLUTION: An interior is partitioned into first, second and third structures 17a, 17b, 17c and catalysts are provided therein. By controlling flowing order and direction of exhaust gas by an exhaust selector valve 70, in addition to avoiding sulfur oxides poisoning, removing particulates, or the like, catalyst temperature is controlled. |
