| 摘要 |
A controller of an internal combustion engine capable of increasing the accuracies of fuel control and ignition timing control even when the reliability of a calculated intake air amount may be lowered and also enabli ng a reduction in manufacturing cost. In the controller, a first estimated inta ke amount is calculated according to a valve lift, a cam phase, and a compressi on ratio, a second estimated intake amount is calculated according to the flow of air detected by an air flow sensor, and when an estimated flow Gin_vt is within Gin_vt <= Ginl calculated based on an engine speed, the valve lift , the cam phase, and the compression ratio, a fuel injection amount is determined according to the first estimated intake amount, and when the estimated flow is within Gin2 <= Gin_vt, the fuel injection amount is determined according to the second estimated intake amount.
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