Alarm system for signaling harmful drops in or low levels of eng

Details Alarm system for signaling harmful drops in or low levels of eng Alarm system for signaling harmful drops in or low levels of eng

1982-09-29

1985-03-12

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

F01M 100, G08B 2100

Patent

active

045048193

ABSTRACT:
An alarm system applied to engine oil pressure dependent on engine speed includes first and second sensors. The first sensor detects the engine oil pressure and generates a signal indicative thereof. The second sensor detects the engine speed and generates a signal indicative thereof. A reference signal is produced in response to the engine speed signal for defining an oil pressure reference level dependent on the engine speed. A comparator, responsive to the oil pressure signal and the reference signal, compares the engine oil pressure to the reference level and generates an alarm signal when the engine oil pressure is lower than the reference level.

REFERENCES:
patent: 4059087 (1977-11-01), Tanigami et al.
patent: 4328480 (1982-05-01), Keitel

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