Variable speed coupling system for cooling an engine

Details Variable speed coupling system for cooling an engine Variable speed coupling system for cooling an engine

1988-11-18

1990-05-01

Kamen, Noah P.

Internal-combustion engines

Cooling

Devices for cooling liquid by air flow

123 4112, 192 215, F01P 710

Patent

active

049209299

ABSTRACT:
An engine cooling fan includes a first member adapted to be drivingly connected to the engine and a second member mounted rotatably relative to the first member, a series of fan blades are provided on the second member, the first and second members having opposed parallel faces separated from one another, the space between the faces being filled with a fluid the viscosity of which may be varied by applying a magnetic or electric field, the first and second members being arranged such that an electric or magnetic field may be applied therebetween. The electric or magnetic field is controlled by a control unit in response to signals corresponding to coolant temperature and engine speed.

REFERENCES:
patent: 2575360 (1951-11-01), Rabinou
patent: 2661825 (1953-12-01), Winslow
patent: 2886151 (1959-05-01), Winslow
patent: 4222353 (1980-09-01), Abe et al.
Journal of Electrostatics, vol. 17, No. 2, Jul. 1985, pp. 181-191, Elsevier Science Publishers B.V.
Patent Abstracts of Japan, vol. 10, No. 281 (M-520) [2337], 25th Sep. 1986 & JP-A-61 102 313 (Toyota Motor Corp.) 21-05-1986.

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