| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device capable of enhancing reduction effect of NOx and fuel economy, and enhancing an air-fuel ratio control accuracy. SOLUTION: The fuel injection control device performs rich control for raising the air-fuel ratio after the engine returns from a fuel-cut state. During a rich control, after the air-fuel ratio is raised, and when the integral intake air amount is more than a threshold value, the device performs control for decreasing the moving amount of the target air-fuel rate to the rich side. COPYRIGHT: (C)2005,JPO&NCIPI
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