| 摘要 |
PROBLEM TO BE SOLVED: To precisely calculate desired fuel injection quantity by using a fuel behavior model showing the behavior of the fuel after being injected from a fuel injection valve in a fuel injection quantity control device for an internal combustion engine. SOLUTION: The model prescribing the relationship between injection quantity fi, wall surface adhesion amount fw, and combustion requirement amount in the cylinder fc (fuel amount actually sucked) is created by using the ratio (adhesion ratio R) which the fuel injected from the fuel injection valve becomes a port wet and the ratio (residual ratio) which the fuel adhered to a wall surface remains as being without vaporizing in the suction stroke. The adhesion ratio R and residual ratio P are appropriately obtained based on the operation state of the internal combustion engine, or the like. The affect of the fuel temperature is reflected on the adhesion ratio R. COPYRIGHT: (C)2005,JPO&NCIPI
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