EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE,申请号JP20040035495-传众专利搜索

EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

申请公布号：JP2005226531(A)

申请号：JP20040035495

申请日期：2004.02.12

申请公布日期：2005.08.25

申请人：

TOYOTA INDUSTRIES CORP;TOYOTA MOTOR CORP

发明人：NARITA YUJI;TAKAHASHI NOBUYUKI;IMAI TAKESHI;SUZUKI HISANOBU;NAKAMURA YOSHITAKA

分类号：F01N3/02;F01N3/023;F01N3/025;F01N3/24;F01N9/00;F01N11/00;F01N13/04;F02B37/007;(IPC1-7):F01N3/02

主分类号：F01N3/02

摘要：PROBLEM TO BE SOLVED: To highly accurately estimate an exhaust gas flow rate in exhaust passages each corresponding to a plurality of collecting means for collecting unclean substrate contained in exhaust gas. SOLUTION: A collectors 25A, 25B collect black smoke particulate (unclean substance) contained in the exhaust gas. A differential pressure detector 24A detects first pressure difference between upstream and downstream in the collector 25A, and a differential pressure detector 24B detects second pressure difference between upstream and downstream in the collector 25B. The air flow meter 23A detects an air flow rate in a branched intake passage 16A, and an air flow meter 23B detects an air flow rate in the branched intake passage 16B. Immediately after the completion of a regeneration process in which the black smoke particulate in the collectors 25A, 25B is removed, a control computer 28 estimates the exhaust gas flow rate in the exhaust passages 20A, 20B based on the first and second pressure difference. COPYRIGHT: (C)2005,JPO&NCIPI