Engine roughness sensor

Details Engine roughness sensor Engine roughness sensor

1979-12-07

1982-07-06

Myracle, Jerry W.

Measuring and testing

Test stand

For engine

73660, G01M 1500

Patent

active

043376479

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. 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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