| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine revolutions control device capable of suppressing a reduction amount of the actual number of revolutions with respect to the target number of revolutions when a state that the actual number of revolutions forcibly exceeds the target number of revolutions has continued due to external factors, and subsequently the external factors are resolved and the actual number of revolutions is converged into the target number of revolutions. SOLUTION: An ECU 10 has an acceleration lever 8, an engine revolutions sensor, a revolutions control unit 100 by PI or PID arithmetic operation based on deviation Nerr between the target number of revolutions Nset and the actual number of revolutions Nact, and an electronic governor 2 based on arithmetic operation values of a fuel injection quantity. When the target number of revolutions Nset is 200 rpm or smaller, and the actual number of revolutions Nact is 100 rpm larger than the target number of revolutions Nset, and an arithmetic operation value of the fuel injection quantity is Rmin or smaller in the actual number of revolutions Nact at that time, a P-gain is set to a double, and when an I-component is in a negative value, the I-component is set to zero. COPYRIGHT: (C)2011,JPO&INPIT
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