SYSTEM AND METHOD OF CONTROLLING ENGINE PROVIDED WITH DUAL CONTINUOUSLY VARIABLE VALVE DURATION DEVICE

A system of controlling an engine provided with a dual continuously variable valve duration device may include an engine, an intake valve for selectively supplying air or a mixture of the air and fuel to the combustion chamber, an ignition switch to ignite a burner to burn the mixture, and an exhaust valve disposed in the combustion chamber to selectively discharge exhaust gas in the combustion chamber to an outside of the combustion chamber, the dual continuously variable valve duration device provided to adjust an intake duration of the intake valve and an exhaust duration of the exhaust valve, a warm-up catalytic converter including a three-way catalyst for purifying hydrocarbons, carbon monoxide, nitrogen oxides contained in the exhaust gas downstream of the engine, and a controller for adjusting an ignition timing, the intake duration and the exhaust duration of the ignition switch based on a driving condition of a vehicle.