| 摘要 |
PROBLEM TO BE SOLVED: To improve the output of an internal combustion engine which has a variable valve timing mechanism for a supercharger, and which is equipped with an inlet valve and which is improved in fuel economy. SOLUTION: If the variation quantityΔAPO of an accelerator opening is larger than a predetermined value A, or the accelerator opening APO is larger than a predetermined value B, after a target excess pressure is set, taking into consideration the friction of the supercharger, the side of which the valve timing of the inlet valve is taken, a timing advance side or a timing retard side, is determined, based on an engine speed and an excess pressure and feedback control of the excess pressure is conducted, while switching the target excess pressure according to the valve timing. COPYRIGHT: (C)2009,JPO&INPIT
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