Refrigeration – Automatic control – Of external fluid or means
Reexamination Certificate
2006-01-17
2006-01-17
Ali, Mohammad M. (Department: 3744)
Refrigeration
Automatic control
Of external fluid or means
C181S183000, C181S184000
Reexamination Certificate
active
06986260
ABSTRACT:
An electric fan system has a first electric blower10,which utilizes a brushless motor, and a second electric blower, which utilizes a brushed motor, for distributing the cooling air to the radiator and the condenser. The system has an electronic engine control unit which activates only the first electric blower when it determines that the cooling water temperature is less than T2,and activates both the first and second electric blowers when it determines that the cooling water temperature is T2or higher. The water temperature is based on a detection output from a cooling water temperature sensor. Thus, since the electric blower is not activated unless the cooling water temperature becomes T2or higher, use of the brushed motor is limited and its life is increased.
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European Search Report dated Aug. 19, 2004 in corresponding European Application No.04 01 6094.
Matsuki Tatsuhiro
Muramatsu Takaaki
Oda Shin-ichi
Takeuchi Kuzuhiro
Ali Mohammad M.
Asmo Co. Ltd.
DENSO Corporation
Harness Dickey & Pierce PLC
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