Patent ID: 8501104
Filing Date: 2013-08-06
Classification: B01D,F01N,Y02C,Y02T

Abstract:
1. An exhaust gas purification apparatus, comprising: a first cylindrical housing in which at least a filter for collecting particulate matter in exhaust gas is contained; a second cylindrical housing in which at least a reducing catalytic converter for reduction-purifying nitrogen oxide with liquid reducing agent is contained; a communicating pipe, including a straight portion, connecting opposite end portions of each housing; and a nozzle, attached to the communicating pipe, to inject liquid reducing agent into the straight portion, wherein the first and second housings are closely disposed such that axis lines thereof are arranged substantially parallel to each other, wherein the communicating pipe includes an elbow portion in the vicinity of an engaging portion with the first housing, wherein, in a plane parallel with both axis lines of the first and second housing, the communicating pipe extends in a direction opposite to the second housing from the engaging portion, bends at the elbow portion to further extend toward the second housing so that an axis line of the straight portion is inclined with respect to the axis lines of the first and second housings, and connects to the second housing via the straight portion, and a flow passage of the exhaust gas from the first housing through the communicating pipe to the second housing is formed in a substantial N-shape, and