Apparatus of controlling vehicle and method thereof

A method of controlling a vehicle in which all operating region of an engine are operated with theoretical air-fuel ratio, comprising:

• detecting, by a vibration sensor, whether a knocking is generated in a combustion chamber of the engine;
• when the knocking is generated in the combustion chamber, adjusting by a controller, an ignition timing by a spark plug based on operating regions of the engine;
• and
• adjusting, by the controller, a closing timing of an intake valve by a variable valve apparatus;
• wherein the operating region includes a first operating region having a low-load region and a middle-load region and a second operating region having a high-load region;
• wherein when the knocking is generated in the second operating region, by the controller, advancing the closing timing of the intake valve by a predetermined crank angle from an initial closing timing, and retarding the ignition timing by a predetermined crank angle compared to a normal ignition timing;
• and
• wherein when the closing timing of the intake valve reaches a target closing timing, by the controller, restoring the ignition timing to the normal ignition timing.