| 摘要 |
PROBLEM TO BE SOLVED: To control an internal combustion engine provided with a variable lift and phase mechanism according to atmospheric pressure. SOLUTION: A control device for an internal combustion engine stores a map indicating a correlation among a rotational speed, a gauge pressure of an intake manifold, a lift amount of an intake valve, a phase of the intake valve and an intake air amount of the engine under a reference condition of a predetermined reference atmospheric pressure and a predetermined reference intake air temperature. An intake air amount for the reference condition is determined as a reference intake air amount by referring to the map based on a current rotational speed, a current gauge pressure, a current lift amount and a current phase. The reference intake air amount is corrected with a ratio between an air density under a current condition of a current atmospheric pressure, a current intake air temperature and a current gauge pressure and an air density under the reference condition to calculate an intake air amount for the current condition. Ignition timing map under the predetermined reference condition is stored, reference ignition timing provided from the map is corrected with atmospheric pressure, and the final ignition timing is determined. COPYRIGHT: (C)2009,JPO&INPIT
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