Global Patent Index - EP 1187977 A2

EP 1187977 A2 20020320 - METHOD FOR IDENTIFYING A FAULTY SENSOR

Title (en)

METHOD FOR IDENTIFYING A FAULTY SENSOR

Title (de)

VERFAHREN ZUR ERKENNUNG EINES FEHLERHAFTEN SENSORS

Title (fr)

PROCEDE D'IDENTIFICATION D'UN CAPTEUR DEFECTUEUX

Publication

EP 1187977 A2 20020320 (DE)

Application

EP 00993273 A 20001122

Priority

  • DE 0004119 W 20001122
  • DE 19958384 A 19991203

Abstract (en)

[origin: WO0140636A2] The invention relates to a method for identifying a faulty sensor, for example, the coolant temperature sensor of an internal combustion engine, which determines a measured quantity and outputs an output signal that is dependent on said measured quantity. Said output signal is checked for plausibility in an evaluation device, e.g. in the control unit. A fault is identified if, within a predeterminable time after the onset of a disturbance quantity which influences the measured quantity, no change in the output signal of the sensor occurs.

IPC 1-7

F02D 41/22

IPC 8 full level

G01M 17/007 (2006.01); F01P 11/16 (2006.01); F02D 41/22 (2006.01); F02D 45/00 (2006.01); F01P 7/08 (2006.01); F01P 7/14 (2006.01); F01P 7/16 (2006.01)

CPC (source: EP KR)

F01P 11/16 (2013.01 - EP); F02D 41/22 (2013.01 - KR); F02D 41/222 (2013.01 - EP); F01P 7/08 (2013.01 - EP); F01P 7/164 (2013.01 - EP); F01P 2007/146 (2013.01 - EP); F01P 2031/00 (2013.01 - EP); F23N 2229/10 (2020.01 - EP); Y02T 10/40 (2013.01 - EP)

Citation (search report)

See references of WO 0140636A2

Citation (examination)

JP H09229479 A 19970905 - NORITZ CORP

Designated contracting state (EPC)

DE FR GB SE TR

DOCDB simple family (publication)

WO 0140636 A2 20010607; WO 0140636 A3 20011227; DE 19958384 A1 20010607; EP 1187977 A2 20020320; JP 2003515694 A 20030507; KR 20020005583 A 20020117

DOCDB simple family (application)

DE 0004119 W 20001122; DE 19958384 A 19991203; EP 00993273 A 20001122; JP 2001542677 A 20001122; KR 20017009735 A 20010802