EXHAUST EMISSION CONTROL DEVICE, ATTACHING/DETACHING METHOD FOR FILTER USED FOR IT, AND EXHAUST EMISSION CONTROL DEVICE FOR BUS

摘要

PROBLEM TO BE SOLVED: To facilitate attaching or detaching of a filter. SOLUTION: This exhaust emission control device 22 comprises an outer easing 30 and an inner casing 33 storing the filter 49. In the outer casing 30, the inner easing 33 is movable along the axial line of the outer easing. The inner casing 33 is put in and out along the axial line of the outer easing 30, thereby facilitating the attaching or detaching of the filter.