Control method of magnet type fan clutch
AssigneeUsui Kokusai Sangyo Kaisha Limited
InventorsHiroshi Inoue, Ken Shiozaki
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Abstract
A control method of a magnet type fan clutch is provided to improve engine performance, fuel economy, engine life, and vehicle acceleration and to reduce fan noise, and optimize fan horsepower. The magnet type fan clutch has a magnet coupling combined with an electromagnetic clutch. The method includes turning the electromagnetic clutch ON and OFF on the basis of cooling fluid temperature, engine oil temperature, transmission oil temperature, vehicle speed, engine rotation rate, accelerator opening, compressor pressure of an air conditioner, an On or Off signal of the air condition, a fuel injection indication amount, a clutch activation lower limit temperature and its lower temperature, and an engine rotation rate set value to control the fan rotation.
Claims4
A control method of a magnet type fan clutch, wherein a magnet coupling is combined with an electromagnetic clutch;
- a fan is attached to the magnet coupling side;
- and the magnet coupling is ON and OFF—controlled by the electromagnetic clutch;
- the method comprising turning ON and OFF the electromagnetic clutch on the basis of a radiator cooling fluid temperature, an engine oil temperature, a transmission oil temperature, a vehicle speed, an engine rotation rate, an accelerator (throttle) opening, a compressor pressure of an air conditioner and an On or Off signal of the air conditioner, a fuel injection indication amount, a clutch activation lower limit temperature and its lower limit temperature, and an engine rotation rate set value to control the fan rotation.
Dependencies are inferred from the claim text.