Patent ID: 8127592
Filing Date: 2012-03-06
Classification: B01D,F01N,G01N,Y02T

Abstract:
1. A particulate matter detection sensor for detecting particulate matter in an exhaust line on which a diesel particulate filter is provided, comprising: a secondary exhaust line configured to be connected to the exhaust line, said secondary exhaust line branching out a flow of an exhaust gas from said exhaust line; a flow control valve provided to the secondary exhaust line; a particulate matter detection filter provided to said secondary exhaust line and having a volumetric soot storage capacity smaller than the volumetric soot storage capacity of the diesel particulate filter; and a differential pressure measuring part configured to measure a differential pressure between an inlet and an outlet of said particulate matter detection filter, wherein said particulate matter detection sensor is configured to detect an amount of particulate matter in said exhaust line based on said differential pressure measured by said differential pressure measuring part.