Control system and method for fuel injection by predicting engine noise

A noise control system related to fuel efficiency and emission value by predicting engine noise, the noise control system comprising:

• an engine noise predicting device configured to derive a real-time predicted engine noise value by a predicted engine noise coefficient which is pre-stored according to a currently measured combustion pressure value of an engine;
• and
• an engine control unit (ECU) configured to determine a difference between the real-time predicted engine noise value derived by the engine noise predicting device and a target engine noise value for a current operation condition of the engine, and when the engine noise is determined as being degraded due to an abnormal combustion, configured to change the target engine noise value to control the fuel efficiency and the emission value according to the changed target engine noise value.