Measuring and testing – Dynamometers – Responsive to torque
Patent
1995-04-28
1996-11-05
Chilcot, Richard
Measuring and testing
Dynamometers
Responsive to torque
188296, 7386214, G01L 300, F16D 5700
Patent
active
055719759
ABSTRACT:
A power absorbing dynamometer includes a stator having an inside stator surface and a rotor having an inside rotor surface. The rotor is rotatable by a mechanical power source. The inside rotor and stator surfaces generally face and oppose each other. Together, the rotor and stator define a passage bounded substantially by the inside surfaces thereof. The passage preferably is a torus-shaped passage within the dynamometer. Liquid is introduced into the passage via a port of the dynamometer. The dynamometer also includes means for developing and maintaining within the passage a unique liquid flow which is a substantially helical recirculating flow of the liquid on the inside rotor and stator surfaces as the rotor is rotated by the mechanical power source. The liquid is thereby heated or vaporized as the rotor is rotated by the mechanical power source, and power absorbed from the mechanical power source is related to a rate at which the liquid is heated or vaporized. The power absorbing dynamometer preferably causes at least some of the liquid in the passage to boil and vaporize due substantially only to friction associated with the substantially helical recirculating flow of the liquid on the inside rotor and stator surfaces. The power absorbed from the mechanical power source is related to the rate at which the liquid vaporizes. The vaporized liquid preferably collects in the center of the passage where it can be easily vented.
REFERENCES:
patent: 669568 (1901-03-01), Webb
patent: 1161117 (1915-11-01), Ehrhart et al.
patent: 1228215 (1917-05-01), Junkers
patent: 1718175 (1929-06-01), Nilson
patent: 2349921 (1944-05-01), Wemp
patent: 2425171 (1947-08-01), Bennett et al.
patent: 2603968 (1952-07-01), Cline
patent: 2634830 (1953-04-01), Cline
patent: 2672953 (1954-03-01), Cline
patent: 2672954 (1954-03-01), Bennett
patent: 2689476 (1954-09-01), Van Ornum
patent: 3598208 (1971-08-01), Bronder
patent: 3809017 (1974-05-01), Eskell
patent: 3818754 (1974-06-01), Asmus
patent: 3942363 (1976-03-01), Swis et al.
patent: 4344479 (1982-08-01), Bailey
patent: 4864872 (1989-09-01), Stahl
patent: 4899595 (1990-02-01), Warsaw
patent: 4982819 (1991-01-01), Koshimo
patent: 5279262 (1994-01-01), Muehleck
"Computer Simulation of a Variable Fill Hydraulic Dynamometer", J. K. Raine and P. G. Hodgson, Proc. Instn. Mech. Engrs., vol. 205, 1991, pp. 155-163.
"A Performance Prediction of Hydrodynamic Torque Converter", K. Minato, K. Sakamato, M. Takagi, K. Fujitani, SAE Transactions, 1990, v99, sec. 6., pp. 740-747.
"A High Speed Low torque Fluid Dynamometer", S. M. Yahya, D. P. Agrawal, Instruments India, Jan.-Feb. 19975, pp. 23-26.
"Water Brake Status (Considering Cavitation)", W. J. Courtney, ASME, Fluids Engineering Division, vol. 79, 1989, pp. 87-92.
"Movable Shroud Changes Dynamometer Blades' Effective Length", Robert N. Boggs, Design News, Sep. 4, 1989, pp. 178-179.
"Dynamometer tackles compact engine tests", Engineering News, one page.
Ognibene Edward J.
Smith, Jr. Joseph L.
Biegel Ronald
Chilcot Richard
Massachusetts Institute of Technology
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