Patent ID: 7676319

Claim:
An intake air control apparatus for an engine having a variable valve unit capable of varying opening characteristic of an intake valve and an electronically controlled throttle provided in an intake pipe on an upstream side of the intake valve, comprising: a target intake air amount computing section that computes a target intake air amount of the engine corresponding to a operating condition of the engine; an atmospheric pressure detecting section that detects an atmospheric pressure; a first control section that controls the variable valve unit in a manner such that the intake air amount of the engine is adjusted to become the target intake air amount, when the atmospheric pressure exceeds a threshold value; and a second control section that controls the opening characteristic of the intake valve in a manner such that the intake air amount of the engine becomes larger than the air intake amount controlled by the first control section, and controls the electronically controlled throttle in a manner such that the intake air amount of the engine becomes the target intake air amount, when the atmospheric pressure does not exceed the threshold value.