Patent ID: 8425851

Claim:
An exhaust emission control device, comprising: a particulate filter housed by a casing; a selective reduction catalyst housed by a casing and arranged downstream of said particulate filter and capable of selectively reacting NO x with ammonia even in the presence of oxygen, the particulate filter and the selective reduction catalyst are arranged side by side such that inlet ends of the particulate filter and the selective reduction catalyst are oriented to one and the same direction; and an S-shaped communication passage being provided independently between the particulate filter and the selective reduction catalyst and configured to guide the exhaust gas from an outlet end of the particulate filter to the inlet end of the adjacent selective reduction catalyst through antithetical turnabout, urea water being addible intermediately of said communication passage, wherein the S-shaped communication passage and each of the casings for the particulate filter and selective reduction catalyst are interconnected and integrally restrained so as to be shackled by rigid restraining members.