| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress variations in air-fuel ratio between cylinders resulting from the torsion of a cam shaft. <P>SOLUTION: On the cam shaft 23, a distortion sensor 35 is provided for detecting the torsion of the cam shaft 23. A valve timing for each of the cylinders is calculated on the basis of the torsion of the cam shaft 23, an intake air amount for each of the cylinders is calculated on the basis of the calculated valve timing, and an fuel injection amount is corrected with respect to each of the cylinders to set an air-fuel ratio for each of cylinders to be a target air-fuel ratio, on the basis of the intake air amount. The used distortion sensor 35 is a semiconductor type distortion sensor on the semiconductor substrate of which a wheatstone bridge circuit constituted of a plurality of diffused resistors is formed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
