Power plants – Pressure fluid source and motor – Methods of operation
Patent
1994-11-25
1996-07-02
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Methods of operation
60431000, 123198DB, 123357000, 123397000, F16D 3100, F02B 7700
Patent
active
055310702
ABSTRACT:
A front end loader driven by a diesel engine is prevented from starting in reverse after stalling under load conditions which might place a backload on the engine. A speed sensor senses engine speed and the output of the sensor is applied to a programmable controller that controls a fuel flow solenoid. The controller compares the engine speed with a first reference speed in approximately the range of the idle speed of the engine until the engine speed is greater than the first reference speed. The controller then compares the engine speed with a second reference speed value less than the engine idle speed. If the engine speed drops below the second reference speed value, indicating an impending engine stall, the microprocessor controls the fuel flow solenoid to stop flow of fuel to the engine so that the engine stops. Since the engine is without fuel it cannot restart even if backloaded. A method of operating the diesel engine is also disclosed.
REFERENCES:
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patent: 4555762 (1985-11-01), Ohgami et al.
patent: 4565170 (1986-01-01), Grieshaber et al.
patent: 4785771 (1988-11-01), Ibuki et al.
patent: 4966113 (1990-10-01), Fujimoto
patent: 5388562 (1995-02-01), Sekiguchi et al.
Berger John G.
Priepke Edward H.
Torland Peter J.
New Holland North America Inc.
Nguyen Hoang
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