Method for controlling a vehicle engine coolant fan

Details Method for controlling a vehicle engine coolant fan Method for controlling a vehicle engine coolant fan

1998-01-08

2000-04-04

Kamen, Noah P.

Internal-combustion engines

Cooling

Automatic coolant flow control

F01P 702

Patent

active

060448091

ABSTRACT:
A method for controlling a vehicle engine coolant fan. Because operation of the engine coolant fan creates a power drain upon the engine, it is undesirable to operate the coolant fan when the engine is fueled. Conversely, a power drain upon the engine is desirable when an attempt is being made to slow the vehicle. Consequently, the present invention requests activation of the coolant fan whenever a power drain upon the engine is desirable. Not only is this desirable in order to slow the vehicle, but it also lowers the coolant temperature, thereby reducing the chance that the coolant fan will have to be operated in the future when such operation is undesirable.

REFERENCES:
patent: 4062329 (1977-12-01), Rio
patent: 4179888 (1979-12-01), Goscenski, Jr.
patent: 4433648 (1984-02-01), LeBlanc
patent: 4694784 (1987-09-01), Hirano et al.
patent: 5117898 (1992-06-01), Light et al.
patent: 5359969 (1994-11-01), Dickrell et al.
patent: 5483927 (1996-01-01), Letang et al.

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