Global Patent Index - EP 1741893 A1

EP 1741893 A1 20070110 - Controlling system for cooling fan

Title (en)

Controlling system for cooling fan

Title (de)

Steueranordnung für Lüfter eines Kühlsystems

Title (fr)

Système de commande pour ventilateur de refroidissement

Publication

EP 1741893 A1 20070110 (EN)

Application

EP 06116237 A 20060628

Priority

JP 2005197664 A 20050706

Abstract (en)

A controlling system for a cooling fan according to the present invention includes a fluid-pressure motor for driving the cooling fan; a fluid-pressure pump functioning as a driving source for the fluid-pressure motor; and a controller. The controller determines a target motor speed value by selecting a higher one of required motor speed values respectively corresponding to multiple kinds of fluids to be cooled and controls the fluid-pressure motor so that the motor speed thereof reaches the target motor speed value, each of the required motor speed values being determined from a temperature value of the corresponding fluid detected by a corresponding one of temperature sensors on the basis of a characteristic preliminarily determined by a temperature-versus-motor-speed relationship for the corresponding fluid, the characteristic being set for each kind of fluid.

IPC 8 full level

F01P 7/04 (2006.01)

CPC (source: EP US)

F01P 7/044 (2013.01 - EP US); F01P 2025/34 (2013.01 - EP US); F01P 2025/40 (2013.01 - EP US); F01P 2025/52 (2013.01 - EP US); F01P 2060/04 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1741893 A1 20070110; CN 1891995 A 20070110; JP 2007016659 A 20070125; US 2007006824 A1 20070111

DOCDB simple family (application)

EP 06116237 A 20060628; CN 200610105410 A 20060706; JP 2005197664 A 20050706; US 42616706 A 20060623