Anti-stall control

Details Anti-stall control Anti-stall control

1982-01-21

1984-05-15

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

290 40C, 290 51, F16H 3946

Patent

active

044480210

ABSTRACT:
An anti-stall control for use in a system having an engine which drives a pump to supply fluid under pressure to a motor and including means responsive to a control voltage for altering the flow of fluid to the motor. The anti-stall control senses the speed of the engine and generates a voltage proportional thereto, the speed voltage being compared to a reference voltage for providing a D.C. signal proportional to the speed voltage. A quick dump/slow recovery circuit is responsive to a decrease in the amplitude of the D.C. signal for generating a control voltage which decreases at a fast rate to prevent overloading of the engine, the circuit being responsive to an increase in the D.C. signal for generating a control voltage which increases at a slow rate to improve the stability of the system.

REFERENCES:
patent: 3901031 (1975-08-01), Knapp et al.
patent: 3914938 (1975-10-01), Cornell et al.
patent: 3924410 (1975-12-01), Cornell et al.
patent: 4158290 (1979-06-01), Cornell
patent: 4180979 (1980-01-01), Cornell
Honeywell, "Instructions Forward Speed Control W883A".
Fulkerson, "Slow Recovery Circuit on Engine Load Control System", 12/17/79.

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