Single-wire engine indicator device

Details Single-wire engine indicator device Single-wire engine indicator device

1988-06-01

1990-04-03

Orsino, Joseph A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

3404503, B60Q 100

Patent

active

049144197

ABSTRACT:
An indicator of operating conditions in an internal combustion marine engine displays information about a plurality of engine conditions in response to signals communicated from a remote location over a single wire. Different engines troubles are identified by rectangular voltage wave forms of different duty cycles on the single wire. A logic circuit detects a particular duty cycle and actuates an alarm in response to the detected signal. It is thus possible to alert an operator at a remote location to conditions such as low oil pressure, zero oil pressure or overtemperature by use of a single wire connected to the engine.

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