| 摘要 |
PROBLEM TO BE SOLVED: To restrain a rapid increase in fuel injection amount, by controlling an engine so that fuel injection amount is decreased which is set by a fuel injection amount setting means within set time after it escapes from eco-run operation due to failure of eco-run condition. SOLUTION: An engine control device sets set time (t) from escape to completion to judge completion of escape of eco-run operation, and sets correction factorα(0<α<1) to decrease fuel injection amount FB. When control is started due to failure of eco-run condition (300), the device sets basic injection amount FB, correction FA of acceleration-time increasing amount, and correction FO of other increasing amount (302), and compares elapsed time tO after escape from eco-run operation with set time (t) (304). When the elapsed time tO is less than the set time (t), injection fuel amount FT is set based on the basic injection amount FB, correction FA of acceleration-time increasing amount, correction FO of other increasing amount, and correction factorα(310). Thus, the injection fuel amount FT is reduced, and rapid increase of fuel injection amount is restrained at escape from eco-run operation.
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