EP 1387933 A1 20040211 - METHOD FOR ADJUSTING COOLANT TEMPERATURE IN AN INTERNAL COMBUSTION ENGINE
Title (en)
METHOD FOR ADJUSTING COOLANT TEMPERATURE IN AN INTERNAL COMBUSTION ENGINE
Title (de)
VERFAHREN ZUM REGELN DER KÜHLMITTELTEMPERATUR EINER BRENNKRAFTMASCHINE
Title (fr)
PROCEDE POUR REGULER LA TEMPERATURE DU LIQUIDE DE REFROIDISSEMENT D'UN MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 0201574 W 20020430
- DE 10123444 A 20010514
Abstract (en)
[origin: WO02092975A1] A method for adjusting coolant temperature in an internal combustion engine (2), whereby the coolant circuit thereof contains an electrically driven coolant pump (3) and an electrically controllable bypass valve (4). If the setpoint value of the coolant temperature changes in an abrupt manner, the rotating speed of the coolant pump (3) rises during a short interval in order to reduce the dead time required for adjustment. A Smith controller, which takes into account dead times of the system, is used to regulate the bypass valve
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F01P 7/164 (2013.01 - EP US); F01P 7/167 (2013.01 - EP US); F01P 2007/146 (2013.01 - EP US); F01P 2023/00 (2013.01 - EP US); F01P 2023/08 (2013.01 - EP US); F01P 2025/30 (2013.01 - EP US); F01P 2025/32 (2013.01 - EP US); F02D 2041/1431 (2013.01 - EP US)
Citation (search report)
See references of WO 02092975A1
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
WO 02092975 A1 20021121; DE 10123444 A1 20021128; DE 10123444 B4 20061109; DE 50209350 D1 20070315; EP 1387933 A1 20040211; EP 1387933 B1 20070124; US 2004144340 A1 20040729; US 6904875 B2 20050614
DOCDB simple family (application)
DE 0201574 W 20020430; DE 10123444 A 20010514; DE 50209350 T 20020430; EP 02742709 A 20020430; US 47742603 A 20031113