Patent ID: 7036471

Claim:
An intake air control apparatus for an internal combustion engine, comprising: a first variably operated valve mechanism that enables a continuous variation of a working angle of an intake valve of the engine; a second variably operated valve mechanism that enables a continuous variation of a central angle of the working angle of the intake valve of the engine; a target angle calculating section that calculates a target angle of one of the first and second variably operated valve mechanisms from a target load in accordance with an accelerator opening angle and a present engine speed; a variably operated valve mechanism actual angle outputting section that derives an actual angle of the one of the first and second variably operated valve mechanisms which is varied toward the target angle of the one of the first and second variably operated valve mechanisms to output the derived actual angle as a corresponding variably operated valve mechanism actual angle equivalent value; and another target angle calculating section that calculates another target angle of the other of the first and second variably operated valve mechanisms from a present corresponding variably operated valve mechanism actual angle equivalent value, the present engine speed, and the target load on the basis of a known relationship among four of the working angle, the central angle, the engine speed, and a load achieved by the working angle, the central angle, and the engine speed.