Control circuit for road and engine speed governor

Details Control circuit for road and engine speed governor Control circuit for road and engine speed governor

1983-01-20

1984-06-12

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123351, 123363, 180176, 364424, F02D 900, F02D 108, G06G 770, B60K 3100

Patent

active

044535171

ABSTRACT:
An electronic control circuit is disclosed for an engine and load speed governor of the type comprising an overriding throttle closing device. The control circuit comprises engine speed signal generating circuit and a load speed generating circuit to provide electrical speed signals to the input of a microprocessor. The microprocessor develops motor control signals for a reversible electric motor which drives the actuator for the throttle limiting device. The motor control signals for operation in the close throttle direction and the open throttle direction are developed at different outputs of the microprocessor and applied to respective inputs of a motor driver circuit. The motor control signals produced by the microprocessor are time modulated, either pulse rate or pulse width, in accordance with the operating conditions of the engine or load to provide operation of the motor at precisely controlled slow speeds. Unmodulated motor control signals are also produced by the microprocessor under certain operating conditions to provide operation of the motor at full speed.

REFERENCES:
patent: 3217827 (1965-11-01), Pickles
patent: 3491734 (1970-01-01), Mackowiak
patent: 3575257 (1971-04-01), Woseikowski
patent: 3916854 (1975-11-01), Barton et al.
patent: 4181103 (1980-06-01), Sturdy
patent: 4359125 (1982-11-01), Shinuda et al.
patent: 4362138 (1982-12-01), Krueger et al.
patent: 4419729 (1983-12-01), Krieder

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