1985-02-01

PLL Sensing for Engine Diagnostics and Control 850494

An electronic phase-lock loop system is described which acts as an FM demodulator to extract the combustion/compression acceleration/deceleration fluctuations in the angular crankshaft velocity from an optical encoder signal. Further processing can provide roughness detection with a second phase-lock loop, and other similarly useful engine control or diagnostic parameters.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X