EP 2638264 A1 20130918 - ABNORMALITY DETERMINATION APPARATUS AND ABNORMALITY DETERMINATION METHOD FOR COOLANT TEMPERATURE SENSOR, AND ENGINE COOLING SYSTEM
Title (en)
ABNORMALITY DETERMINATION APPARATUS AND ABNORMALITY DETERMINATION METHOD FOR COOLANT TEMPERATURE SENSOR, AND ENGINE COOLING SYSTEM
Title (de)
ABWEICHUNGSBESTIMMUNGSVORRICHTUNG UND ABWEICHUNGSBESTIMMUNGSVERFAHREN FÜR EINEN KÜHLMITTELTEMPERATURSENSOR UND MOTORKÜHLSYSTEM
Title (fr)
APPAREIL ET PROCÉDÉ DE DÉTERMINATION D'ANOMALIE D'UN CAPTEUR DE TEMPÉRATURE POUR LIQUIDE DE REFROIDISSEMENT, ET SYSTÈME DE REFROIDISSEMENT DE MOTEUR
Publication
Application
Priority
- JP 2010253208 A 20101111
- IB 2011002627 W 20111108
Abstract (en)
[origin: WO2012063114A1] A coolant temperature sensor abnormality determination apparatus opens a changeover valve (10) to increase the temperature of a coolant in a heater passageway (202) if the amount of increase of the detected heater inlet coolant temperature value thw2 obtained when the intake air amount of an engine (1) becomes equal to or greater than a predetermined value is small. Then, if the amount of increase (thw2 deviation) in the detected heater inlet coolant temperature value thw2 after the changeover valve (10) opens is greater than or equal to the predetermined value, the apparatus determines that the heater inlet coolant temperature sensor (22) is normal. If the amount of increase in the detected heater inlet coolant temperature value thw2 is smaller than the predetermined value, the apparatus determines that the heater inlet coolant temperature sensor (22) is abnormal.
IPC 8 full level
F01P 7/16 (2006.01); F01P 11/18 (2006.01)
CPC (source: EP US)
F01P 7/16 (2013.01 - US); F01P 7/165 (2013.01 - EP US); F01P 11/18 (2013.01 - EP US); F01P 2025/32 (2013.01 - EP US)
Citation (search report)
See references of WO 2012063114A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012063114 A1 20120518; CN 103189611 A 20130703; CN 103189611 B 20150722; EP 2638264 A1 20130918; EP 2638264 B1 20161221; JP 2012102688 A 20120531; JP 5218526 B2 20130626; US 2013213600 A1 20130822
DOCDB simple family (application)
IB 2011002627 W 20111108; CN 201180053201 A 20111108; EP 11817235 A 20111108; JP 2010253208 A 20101111; US 201113879669 A 20111108