| 摘要 |
PROBLEM TO BE SOLVED: To further accurately estimate consumption energy of a cooling fan in a cooling system having the cooling fan used for cooling a radiator connected to an internal combustion engine and a fluid coupling for transmitting motive power from the internal combustion engine to the cooling fan while adjusting a hydraulic fluid supplied to a torque transmission part. SOLUTION: A rotating speed sensor is installed on a crankshaft of an engine, and a rotating speed sensor is installed on the cooling fan, and the consumption energy of the cooling fan is estimated by using a map on the basis of an engine speed (a pulley rotating speed Np) and a fan rotating speed Nf detected by the respective rotating speed sensors. Operation of the engine can be further properly controlled by operationally controlling the engine on the basis of this estimated consumption energy of the cooling fan. COPYRIGHT: (C)2007,JPO&INPIT
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