Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1979-01-08
1981-10-27
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361194, H01H 4704
Patent
active
042977428
ABSTRACT:
A solenoid-operated fuel valve opens automatically when the engine is started to allow fuel to flow from a fuel tank to the engine and closes automatically when the engine throttle is moved to fuel-off position to shut down flow of fuel through the governor for the engine. In the event of an emergency, operation of a manual shutdown control will de-energize the fuel valve solenoid to shut off flow of fuel to the engine compartment and will also shut down the engine by energizing a solenoid to move the fuel rack for the governor to fuel-off position. Actuation of a fire-extenguisher system for the engine will automatically de-energize the fuel-valve solenoid and energize the fuel-rack solenoid. The fuel-rack solenoid remains energized for a timed period sufficient to ensure engine shutdown in emergency situations. Control circuits are provided to ensure that current to each of the solenoids is reduced to a low holding level after initial energization and pull-in of the solenoids and are also provided to protect against damage from excessive current in the event either solenoid is shorted.
REFERENCES:
patent: 3579052 (1971-05-01), Kato et al.
patent: 3594615 (1971-07-01), Cortelli
patent: 3628102 (1971-12-01), Jauch et al.
patent: 3864608 (1975-02-01), Normile et al.
patent: 4214290 (1980-07-01), Sloan
Heitzman Gary N.
Hutchings Clay L.
Knepp Gary L.
Miller Robert G.
Caterpillar Tractor Co.
Moose Jr. Harry E.
LandOfFree
Engine and fuel shutdown control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Engine and fuel shutdown control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine and fuel shutdown control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-282671