Patent ID: 8327627

Claim:
An exhaust emission control device comprising: a particulate filter housed in a particulate filter casing; a selective reduction catalyst housed in a selective reduction catalyst housing arranged downstream of said particulate filter and capable of selectively reacting NO x with ammonia even in the presence of oxygen, the casings arranged side by side such that entry ends of the particulate filter and the selective reduction catalyst are oriented to one and the same direction; an S-shaped communication passage being provided for introduction of the exhaust gas discharged from a discharge end of the particulate filter to the entry end of the adjacent selective reduction catalyst through reversed turnabout, urea water being addible intermediately of said communication passage; a separable portion arranged intermediately of the communication passage, the selective reduction catalyst casing being supported on a vehicle body independently of the particulate filter casing, the particulate filter casing being detachably mounted and supported on the vehicle body and on the selective reduction catalyst casing; and a pair of brackets, fixed to a frame on the vehicle body, the selective reduction catalyst casing arranged between and attached to both of the pair of brackets, the particulate filter casing being arranged downward of the selective reduction catalyst casing and being detachably mounted on only one of the brackets and on the selective reduction catalyst casing.