Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1983-12-01
1985-04-16
Cox, Ronald B.
Internal-combustion engines
Engine speed regulator
Idle speed control
123352, 290 40R, F02D 1110
Patent
active
045109036
ABSTRACT:
A system for regulating the idle speed of an internal combustion engine. The engine has an alternator, and a voltage regulator having a Darlington circuit connected between an end of a field winding of the alternator and the ground. The Darlington circuit is responsive to the output voltage of the alternator for controlling the current flowing a field winding of the alternator so as to regulate the output voltage of the alternator. The system has an integrator for integrating the voltage across the Darlington circuit and a comparator for comparing the output voltage of the integrator with a reference voltage and for producing an output voltage dependent on the comparison.
A solenoid is operatively connected to a throttle valve of the engine.
A switching transistor circuit is provided to respond to the output voltage of the comparator for allowing the current to pass through the solenoid and for actuating the throttle valve to regulate the idle speed.
REFERENCES:
patent: 3192394 (1965-06-01), Teter
patent: 3789229 (1974-01-01), Jackson
patent: 4402288 (1983-09-01), Ohgami
patent: 4423307 (1983-12-01), Kondo
Cox Ronald B.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
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