Method of feedback-controlling idling speed of internal combustion engine
First Claim
1. An idling speed feedback control method for use with an internal combustion engine having electrical load equipment and a generator for supplying electric power to said electrical load equipment, said generator being driven by said engine, wherein an idling speed feedback control amount is effected as a function of the difference between an actual engine speed and a target speed, said methd comprising the steps of:
- detecting a gnerating state signal representing a field coil current of said generator;
detecting the actual engine speed;
determing an electrical load correction value as a function of said generating state signal and said actual engine speed; and
correcting the feedback control amount during idling by an amount corresponding to the correction value.
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Abstract
An idling speed feedback control method for use with an internal combustion engine having electrical load equipment and a generator for supplying electric power to said electrical load equipment, said generator being driven by said engine, wherein an idling speed feedback control amount is effected as a function of the difference between an actual engine speed and a target idling speed. The method comprises the steps of detecting a generating state signal as a function of the field coil current of the generator which represents the generating state of the generator; detecting the actual engine speed; determining an electrical load correction value as a function of the generating state signal and the actual engine speed; and correcting the feedback control amount during idling by an amount corresponding to the correction value. Determining the electrical load correction value comprises modifying a reference correction value for a control amount, corresponding to a predetermined engine speed set on the basis of the detected generating state signal, as a function of the difference between the detected value of the actual engine speed and the predetermined engine speed.
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Citations
3 Claims
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1. An idling speed feedback control method for use with an internal combustion engine having electrical load equipment and a generator for supplying electric power to said electrical load equipment, said generator being driven by said engine, wherein an idling speed feedback control amount is effected as a function of the difference between an actual engine speed and a target speed, said methd comprising the steps of:
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detecting a gnerating state signal representing a field coil current of said generator; detecting the actual engine speed; determing an electrical load correction value as a function of said generating state signal and said actual engine speed; and correcting the feedback control amount during idling by an amount corresponding to the correction value. - View Dependent Claims (2, 3)
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Specification