Combined vibration and temperature sensor

Details Combined vibration and temperature sensor Combined vibration and temperature sensor

1983-04-21

1984-10-16

Myracle, Jerry W.

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

374144, G01M 1500

Patent

active

044767110

ABSTRACT:
A combined vibration and temperature sensor for an internal combustion engine comprises a piezoelectric disc in mechanical and thermal contact with an engine throttle body and connected electrically in series with an impedance effective to form a voltage divider having a predetermined normalized voltage output at a reference temperature and 50 kilohertz. A 50 kilohertz voltage source is connected across the voltage divider and the vibration signal output provides a temperature signal at 50 kilohertz and an engine vibration signal at a lower frequency such as 5-7 kilohertz.

REFERENCES:
patent: 4299117 (1981-11-01), Andrews et al.
patent: 4391126 (1983-07-01), van Zanten

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