EP 0727570 B1 19980826 - Temperature control device for the cooling system of an internal combustion engine
Title (en)
Temperature control device for the cooling system of an internal combustion engine
Title (de)
Kühlmitteltemperaturregelsystem für die Kühlanlage eines Verbrennungsmotors
Title (fr)
Dispositif de régulation de la température du système de refroidissement d'un moteur à combustion interne
Publication
Application
Priority
DE 19504893 A 19950214
Abstract (en)
[origin: EP0727570A1] The electronic engine controller (1) incorporates a functional unit (4) detecting any defect in the controller (2) of the air-conditioning system through which the coolant passes. A switching signal (Sv) for the thermostatic valve is generated by a diagnostic driver circuit (3) as a function of inputs from e.g. the air-conditioning control panel. To adjust e.g. the idling speed of the engine while the vehicle is stationary, an air-conditioning command signal (SAC) and a compressor switch-on signal (SKO) are AND-gated. The valve is opened if a fault signal persists pref. beyond a time limit (dt) while the coolant temp. exceeds a predetermined threshold (TKdef).
IPC 1-7
IPC 8 full level
F01P 7/16 (2006.01)
CPC (source: EP US)
F01P 7/167 (2013.01 - EP US); F01P 2023/08 (2013.01 - EP US); F01P 2031/00 (2013.01 - EP US); F01P 2031/32 (2013.01 - EP US); F01P 2070/04 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0727570 A1 19960821; EP 0727570 B1 19980826; DE 19504893 A1 19960822; DE 19504893 B4 20041230; DE 59503336 D1 19981001; ES 2122429 T3 19981216; US 5692460 A 19971202
DOCDB simple family (application)
EP 95119912 A 19951216; DE 19504893 A 19950214; DE 59503336 T 19951216; ES 95119912 T 19951216; US 66010196 A 19960607