公开(公告)号：US10208643B2

公开(公告)日：2019-02-19

申请号：US15319541

申请日：2015-06-12

Applicant: DENSO CORPORATION

Inventor： Go Miyagawa ,  Hirokatsu Imagawa ,  Masayuki Tamura

IPC: F01N11/00 ,  G01N15/06 ,  F01N3/021 ,  G01N27/04 ,  F02D41/06 ,  F02D41/14 ,  F02D41/22 ,  G01N15/00

Abstract: A particulate matter detection apparatus includes a particulate matter quantity detection means, a temperature detection means that detects the temperature of exhaust gas, a control unit and a heating means. The particulate matter quantity detection means includes a particulate matter deposition portion that deposits thereon part of particulate matter contained in the exhaust gas emitted from an internal combustion engine and a pair of opposite electrodes arranged apart from each other on the particulate matter deposition portion. The control unit determines a deposition quantity of the particulate matter on the particulate matter deposition portion based on an electrical signal outputted by the particulate matter quantity detection means and receives information on the temperature of the exhaust gas detected by the temperature detection means. The control unit controls the heating means to heat the particulate matter deposition portion to 300° C.-800° C. during a cold start of the internal combustion engine.