Fluid dynamometer having fluid characteristic power absorption a

Details Fluid dynamometer having fluid characteristic power absorption a Fluid dynamometer having fluid characteristic power absorption a

1993-03-29

1995-03-14

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to torque

G01L 320, G01M 1500

Patent

active

053968115

ABSTRACT:
A fluid dynamometer is provided for absorbing a range of power output proed by an engine's rotating shaft. Power absorbing characteristics are controlled by adjusting the fluid media characteristics in terms of its temperature and/or its density and viscosity. A tank, containing an energy or power absorbing fluid, receives the rotating shaft. One or more disks, submerged in the fluid and coaxially mounted on the rotating shaft for rotation therewith, cooperate with the fluid to absorb power from the rotating shaft. The disk(s) are sized so that a first specified amount of power from the rotating shaft is absorbed at a calibration temperature of the fluid. Heating and cooling units are provided to respectively heat and cool the fluid. A controller energizes the heating and cooling units in a cooperative fashion to adjust and maintain the fluid at a predetermined temperature value for power absorption at a second specified amount of power produced by the rotating shaft. A fluid composition exchanger may also be provided to alter the power absorbing characteristics by altering the fluid's composition.

REFERENCES:
patent: 2597450 (1952-05-01), Cline
patent: 2603968 (1952-07-01), Cline
patent: 2672953 (1954-03-01), Cline
patent: 2981099 (1961-04-01), Lapp
patent: 3091309 (1963-05-01), Sheldon
patent: 3115034 (1963-12-01), De Hart
patent: 3138018 (1964-06-01), Pohl
patent: 3298224 (1967-01-01), Birchall et al.
patent: 3851524 (1974-12-01), Liu
patent: 3938377 (1976-02-01), Converse, III et al.

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