Digital roughness sensor

Details Digital roughness sensor Digital roughness sensor

1980-09-19

1983-04-19

Ruggiero, Joseph F.

Boots, shoes, and leggings

73659, 123419, 123478, 123487, 36443103, 364508, F02D 502, F02M 5100, F02B 308

Patent

active

043808000

ABSTRACT:
An engine roughness sensor for generating speed normalized digital roughness signals indicative of the variations in magnitude between successive torque impulses imparted to the engine's crankshaft by measuring the period or time it takes the crankshaft to rotate through the same angle for each torque impulse is disclosed herein. The digital roughness signal is normalized as a function of engine speed by dividing the measured magnitude of each torque impulse by a signal indicative of the engine speed to reduce the magnitude of operator induced variations in the generated roughness signals. In an alternate embodiment, the disclosed engine roughness sensor generates a second difference roughness signal which is the difference between the sequentially generated roughness signals.

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