Patent ID: 7891176
Filing Date: 2011-02-22
Classification: F01N,G01N,Y02T

Abstract:
1. An exhaust gas purifying apparatus, comprising: a primary diesel particulate filter provided in a primary exhaust line of a diesel engine; a secondary exhaust line branched from said primary exhaust line from an upstream side of said primary diesel particulate filter, said secondary exhaust line branching a flow of an exhaust gas from said diesel engine; a secondary diesel particulate filter provided in said secondary exhaust line, said secondary diesel particulate filter having a soot storage capacity smaller than the soot storage capacity of said primary diesel particulate filter; and a differential pressure measuring part measuring a differential pressure between an inlet and an outlet of said secondary diesel particulate filter, wherein a distance to said secondary diesel particulate filter from a branching point of said secondary exhaust line from said primary exhaust line is about 2 m or less.