Patent ID: 8327629

Claim:
A black exhaust purification apparatus for a diesel engine, comprising: a first housing having opposite first and second ends, and forming an inlet portion therein; an oxidation catalyst having opposite first and second ends, and disposed in the inlet portion so that the first housing has an upstream space therein between the first end of the first housing and the first end of the oxidation catalyst, and has an outer peripheral space therein around the oxidation catalyst between the first and second ends of the first housing; a particulate filter having opposite first and second ends, wherein the second end of the first housing is joined to the first end of the particulate filter so that the oxidation catalyst and the particulate filter are arranged in series so that exhaust gas discharged from the second end of the oxidation catalyst enters the particulate filter from the first end of the particulate filter and so that the direction of flowing from the first end of the particulate filter to the second end of the particulate filter corresponds to the direction of exhaust gas flowing from the first end of the oxidation catalyst, to the second end of the oxidation catalyst; a second housing having an outlet pipe and joined to the second end of the particulate filter so that the exhaust gas flows from the upstream space to the outlet pipe through the oxidation catalyst and the particulate filter; and an inlet pipe provided on an outer peripheral portion of the first housing between the first and second ends of the first housing so as to introduce exhaust gas from the diesel engine into the inlet portion in the first housing, wherein the inlet pipe has a distance from the first end of the oxidation catalyst toward the second end of the oxidation catalyst in the direction of exhaust gas flowing from the oxidation catalyst to the particulate filter so that exhaust gas is introduced into the upstream side space from the inlet pipe through the outer peripheral space.