| 摘要 |
A method or an apparatus controls a continuously variable valve timing mechanism of an internal combustion engine to continuously and variably control the timing of an intake valve according to atmospheric pressure. The method or apparatus reads an engine revolution speed NE, an engine load GN, and an atmospheric pressure PA, refers to a map according to the atmospheric pressure PA, to find an atmospheric pressure correction coefficient Kpa, which is 1.0 at low altitudes with PA=760 mmHg and decreases as the altitude increases, i.e., as the atmospheric pressure PA decreases, calculates a corrected engine load GNpa as GNpa<-GN/Kpa, and refers to a map according to the corrected engine load GNpa and engine revolution speed NE, to find a target displacement to be imposed on the open/close timing of the intake valve.
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