Method for controlling magnet type fan clutch

Details Method for controlling magnet type fan clutch Method for controlling magnet type fan clutch

2006-10-31

2006-10-31

Ho, Ha (Department: 3681)

Interrelated power delivery controls, including engine control

Clutch control

Condition responsive control

C477S176000, C477S180000

Reexamination Certificate

active

07128690

ABSTRACT:
Provided is a method for controlling a magnet type fan clutch, by which method engine performance, fuel efficiency, engine life, vehicle acceleration capability and other properties of a magnet type fan clutch can be further improved and its fan noise can be further reduced. This method is adopted for controlling a magnet type fan clutch which includes a magnet coupling, an electromagnetic clutch combined with the magnet coupling to control the on/off switching of the magnet coupling, and a fan attached to the magnet coupling. The control method is characterized in that the electromagnetic clutch is turned on or off based on at least one signal of temperatures of radiator coolant, engine oil and transmission oil, a vehicle speed, a rotational speed of an engine, compressor pressure of an air conditioner, and an on/off signal of the air conditioner, etc., so as to control the rotation of the fan.

REFERENCES:
patent: 3924585 (1975-12-01), Woods
patent: 4715482 (1987-12-01), Watanabe et al.
patent: 6082316 (2000-07-01), Ban et al.
patent: 6247567 (2001-06-01), Watanabe
patent: 6634476 (2003-10-01), Inoue et al.
patent: 6878094 (2005-04-01), Kitamura et al.

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