Machine element or mechanism – Elements – Flywheel – motion smoothing-type
Patent
1989-04-13
1991-04-16
Herrmann, Allan D.
Machine element or mechanism
Elements
Flywheel, motion smoothing-type
74573R, 74572, 192 215, 192 35, 188267, 464 29, F16F 1510, F16F 1518, F16D 2700
Patent
active
050073036
ABSTRACT:
In a variable inertial mass flywheel having a main flywheel member coupled to an engine crankshaft and a subflywheel member rotatably arranged relative to the main flywheel member, an electrorheological fluid whose viscosity changes according to intensity of electric field at high response speed is enclosed between electrodes formed on the main flywheel member and the subflywheel member. At engine idling, a higher voltage is applied to the electrodes to increase the viscosity of the fluid, that is, to increase inertial mass of the flywheel so that engine torque ripple can effectively be absorbed. At engine acceleration, a lower (or zero) voltages is applied to the electrodes to decrease the viscosity of the fluid, that is to decrease inertial mass of the flywheel so that high engine torque response characteristics can stably be obtained.
REFERENCES:
patent: 2575360 (1951-11-01), Rabinow
patent: 2684138 (1954-07-01), Buckman
patent: 2886151 (1959-05-01), Winslow
patent: 3047507 (1962-07-01), Winslow
patent: 3691413 (1972-09-01), Russell
patent: 4664236 (1987-05-01), Stangroom
patent: 4815674 (1989-03-01), Blake et al.
patent: 4861006 (1989-08-01), Takano et al.
patent: 4873888 (1989-10-01), Matsuyama
patent: 4896754 (1990-01-01), Carlson et al.
Herrmann Allan D.
Nissan Motor Co,. Ltd.
Yip Winnie
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