EP 0861368 B1 20000412 - INTERNAL COMBUSTION ENGINE COOLING SYSTEM AND METHOD FOR OPERATING SAID SYSTEM
Title (en)
INTERNAL COMBUSTION ENGINE COOLING SYSTEM AND METHOD FOR OPERATING SAID SYSTEM
Title (de)
KÜHLKREISLAUF EINER BRENNKRAFTMASCHINE SOWIE VERFAHREN ZUM BETRIEB DES KÜHLKREISLAUFES
Title (fr)
CIRCUIT DE REFROIDISSEMENT D'UN MOTEUR A COMBUSTION INTERNE AINSI QUE SON MODE OPERATOIRE
Publication
Application
Priority
- DE 19637817 A 19960917
- EP 9704604 W 19970823
Abstract (en)
[origin: DE19637817A1] A cooling and preheating system, in particular for gear oil in an internal combustion engine, has a compensating container, at least one radiator which can be switched on by an engine thermostat when a predetermined temperature in the cooling circuit is reached, and a water/oil heat exchanger. Also disclosed is a cooling and preheating process. In order to more effectively cool and preheat oil with a more compact and cost-effective design, the forward flow (1) of a single water/oil heat exchanger (5) in the heating phase can be branched off the main cooling circuit (12) of the internal combustion engine (17) by means of a valve unit (3), and the same forward flow (1) can be taken in the cooling phase essentially in the coolant secondary flow (13) by means of the same valve unit (3) from the low temperature area (14) of the radiator (4) or from a separate low temperature radiator (14a) connected in the secondary flow downstream of the radiator (4; 4a). The disclosed process provides for the forward flow (1) of the water/oil heat exchanger (5) to be taken in the heating phase essentially from the main coolant stream (12), which does not flow through the radiator (4). At a temperature slightly below the switching point of the main engine thermostat (9), the cooling mode is switched on. In the cooling mode, the forward flow (1) of the water/oil heat exchanger (5) is branched essentially off the low temperature area (14) of the radiator (4) or off another low temperature radiator (14a) connected in the secondary flow downstream of the radiator (4, 4a).
IPC 1-7
IPC 8 full level
F01P 3/20 (2006.01); F01P 7/16 (2006.01); F01P 11/02 (2006.01); F01P 3/18 (2006.01); F01P 7/14 (2006.01); F28F 27/02 (2006.01)
CPC (source: EP US)
F01P 3/20 (2013.01 - EP US); F01P 7/165 (2013.01 - EP US); F01P 11/029 (2013.01 - EP US); F01P 2003/182 (2013.01 - EP US); F01P 2007/146 (2013.01 - EP US); F01P 2037/02 (2013.01 - EP US); F01P 2060/045 (2013.01 - EP US); F28F 27/02 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
DE 19637817 A1 19980319; DE 59701435 D1 20000518; EP 0861368 A1 19980902; EP 0861368 B1 20000412; ES 2146115 T3 20000716; US 6196168 B1 20010306; WO 9812425 A1 19980326
DOCDB simple family (application)
DE 19637817 A 19960917; DE 59701435 T 19970823; EP 9704604 W 19970823; EP 97940120 A 19970823; ES 97940120 T 19970823; US 6881598 A 19980813