192 clutches and power-stop control – Field responsive frictional media type
Patent
1997-06-02
1999-04-27
Bonck, Rodney H.
192 clutches and power-stop control
Field responsive frictional media type
192 584, F16D 3500
Patent
active
058969640
ABSTRACT:
A split rotor cooling fan clutch includes an input member that is constantly driven at engine speed, or at some selected proportion thereof. An output member is journaled on the input member so as to be supported thereon in a substantially nonrotating state when decoupled and alternately, to be concentrically rotatable in concert therewith at a variety of speeds. A space presented between the input and output members contains a quantity of magnetorheological fluid. An engagement mechanism includes the split rotor and coil, with a ferromagnetic element positioned to define an operative gap between the rotor and the ferromagnetic element. The coil is selectively energized with a given current to result in a torque transfer between the input and output elements that provides a rotational speed of the fan tailored to the cooling requirements of the associated engine. Internal heat generation is managed electronically to prevent overheating.
REFERENCES:
patent: 2629472 (1953-02-01), Sterner
patent: 2736409 (1956-02-01), Logan
patent: 2804955 (1957-09-01), Gill
patent: 3250341 (1966-05-01), Takahashi
patent: 3587800 (1971-06-01), Crawford
patent: 3696899 (1972-10-01), Kongelka
patent: 4227861 (1980-10-01), LaFlame
patent: 4285421 (1981-08-01), Halsted
patent: 4302156 (1981-11-01), LaLame
patent: 4310085 (1982-01-01), LaFlame
patent: 4665694 (1987-05-01), Brunken
patent: 4920929 (1990-05-01), Bishop
patent: 4957644 (1990-09-01), Price et al.
patent: 4967887 (1990-11-01), Annacchino et al.
patent: 5137128 (1992-08-01), Takei et al.
patent: 5713444 (1998-02-01), Schroeder
U.S. Ser. No. 08/867,640 "Magnetorheological Fluid Fan Clutch;" filed Jun. 2, 1997.
U.S. Ser. No. 08/869,299 "Passive Magnetorheological Clutch;" filed Jun. 4, 1997.
U.S. Ser. No. 08/867,638 "Magnetorheological Clutch with Minimized Reluctance;" filed Jun. 2, 1997.
U.S. Ser. No. 08/862,914 "Magnetrheological Transmission Clutch;" filed May 23, 1997 (issuing as U.S. Pat. No. 5,823,309 on Oct. 20, 1998).
Rabinow, J.--The Magnetic Fluid Clutch, AIEE Transactions, vol. 67, 1948.
Rabinow, J.--Magnetic-Fluid Control Devices, presented at the SAE National Transportaion Meeting, Cleveland, 1949.
Ramakrishnan, S. et al--Theory and performance of the disc-type electromagnetic particle clutch under continuous slip service, IEE Proc., 1980.
Grau R. et al--The Magnetic Particle Clutch (A Versatile Control Element for Rocket Systems), Aerospace Engineering 1961.
Varadakumari, G. et al--Viscous torque of disc-type magnetic fluid slip clutches, IEE Proc., 1984.
Magnetic Particle Clutch, Automobile Engineer, May 1954 pp. 181-186.
Gopalswamy Swaminathan
Johnston Gary Lee
Jones Gary Lee
Kruckemeyer William Charles
Linzell Samuel Miller
Bonck Rodney H.
General Motors Corporation
Sedlar Jeffrey A.
LandOfFree
Split rotor cooling fan clutch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Split rotor cooling fan clutch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Split rotor cooling fan clutch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-678397