Absorption dynamometer and torque measurement therefor

Details Absorption dynamometer and torque measurement therefor Absorption dynamometer and torque measurement therefor

1993-07-15

1994-09-13

Chilcot, Jr., Richard E.

Measuring and testing

Dynamometers

Responsive to torque

7386209, G01L 320

Patent

active

053458273

ABSTRACT:
The invention is an in-line torque meter for use with an absorption dynamometer in which the twist of a rotating shaft that transmits torque from an engine to an air dynamometer is measured by a single sensor on the adjacent stationary structure. The torque shaft is supported at the dynamometer end by a splined attachment to the shaft of the dynamometer and at the engine end in a pair of preloaded angular contact ball bearings. Torque from the engine causes the shaft to twist. Attached to and rotating with the shaft are two sleeves with projecting teeth, one sleeve attached at each end of the torque shaft. The projecting teeth are interleaved and are located so that both sets of teeth can be sensed by an adjacent single sensor. When the shaft is twisted by the applied torque, the teeth on the two sleeves are angularly displaced with respect to each other. This angular displacement is measured as a phase shift in the signal generated by the sensor. The phase shift being directly proportional to the applied torque.

REFERENCES:
patent: 3548649 (1970-12-01), Parkinson
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patent: 3796093 (1974-03-01), Parkinson
patent: 4450729 (1984-05-01), Troeder et al.
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patent: 4590806 (1986-05-01), Lutton et al.
patent: 4682505 (1987-07-01), Morissette et al.
patent: 4744724 (1988-05-01), Brassert et al.
patent: 4899596 (1990-02-01), Janik et al.
patent: 4947035 (1990-08-01), Zook et al.
patent: 5228349 (1993-07-01), Gee et al.

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