Low fuel pressure monitor for internal combustion engine

Details Low fuel pressure monitor for internal combustion engine Low fuel pressure monitor for internal combustion engine

1980-12-31

1983-11-01

Trafton, David L.

Communications: electrical

Selective

Having indication or alarm

340 60, 340 62, 340 52F, 340626, 340522, B60Q 100

Patent

active

044132484

ABSTRACT:
A low fuel pressure monitor (25) for a two cycle engine (12) having an operating piston (21) initially cooled by pressurized fuel senses the fuel pressure at an output (18) of a fuel pump (14) and the operating speed of the engine (12) as sensed at an output (30) of an alternator (24) to provide an alarm (31) in response to a sensed low fuel pressure condition existing for a predetermined period of time while the engine (12) is operating above a predetermined speed. A circuit (99) senses an improper polarity connection of a battery (96) to provide a second type of an alarm.

REFERENCES:
patent: 3221317 (1965-11-01), Ferrigno, Jr.
patent: 3253256 (1966-05-01), Hull
patent: 3371330 (1968-02-01), Howard et al.
patent: 3859629 (1975-01-01), Komiyama et al.
patent: 3893108 (1975-07-01), McBride, Jr. et al.
patent: 4021794 (1977-05-01), Carlson
patent: 4059087 (1977-11-01), Tanigami et al.
patent: 4261209 (1981-04-01), Hatsuno et al.
patent: 4261305 (1981-04-01), Ikoma

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