| 摘要 |
PROBLEM TO BE SOLVED: To improve learning accuracy in a micro-injection quantity, by leaning by determining a reference interval in multistage injection. SOLUTION: This injection quantity learning device of an internal combustion engine is suitably used for learning the micro-injection quantity by injecting fuel of the micro-injection quantity from a fuel injection valve. Specifically, a micro-injection quantity learning means determines an interval at which an actual injection quantity coincides with a command injection quantity by changing the interval in the multistage injection, and determines the interval as the reference interval. The micro-injection quantity learning means executes learning of the micro-injection quantity based on the reference interval. Thus, the learning accuracy of the micro-injection quantity can be improved. COPYRIGHT: (C)2009,JPO&INPIT
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