Patent ID: 7021259

Claim:
A variable valve control apparatus of an internal combustion engine for controlling an intake side variable valve mechanism that varies an open/close characteristic of an intake valve, comprising: an operating condition detector that detects operating conditions of the internal combustion engine; and a control unit that receives a detection signal from the operating condition detector and that outputs a control signal to the intake side variable valve mechanism based on the detection signal, wherein said control unit is configured to: determine a target open/close characteristic of the intake valve, based on the operating conditions of the internal combustion engine; allow a controlled variable for being fed to the target open/close characteristic by feedback control to be set by at least a proportional gain, the proportional gain being set to be smaller at a low engine rotation speed, in comparison with a high engine rotation speed; and determine the controlled variable by the proportional gain that was set according to the engine rotation speed, to thereby output the determined controlled variable to the intake side variable valve mechanism.