| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for an internal combustion engine capable of improving estimating accuracy of in-cylinder intake air quantity under transient operating condition of the internal combustion engine. SOLUTION: The control device for an internal combustion engine is properly utilized for estimation of the in-cylinder intake air quantity in the internal combustion engine with a supercharger. More specifically, a compressor flow calculation means calculates compressor flow by compensating air flow meter flow rate detected by an air flow meter based on a value acquired by multiplying the difference between the present supercharging pressure and the estimated supercharging pressure by a predetermined gain. By this method, the compressor flow can be calculated precisely even under transient operating condition of the internal combustion engine such as low revolution and low load. Also, an in-cylinder intake air quantity calculation means calculates the in-cylinder intake air quantity based on the compressor flow. Thus, the in-cylinder intake air quantity can be calculated precisely by the control device of the internal combustion engine. COPYRIGHT: (C)2008,JPO&INPIT
|
