FUEL CONTROL SYSTEM AND FUEL CONTROL METHOD OF GASOLINE DIRECT INJECTION ENGINE

摘要

The present invention relates to a system and a method for fuel control of a gasoline direct injection engine. The present invention is capable of improving the noise, vibration, and harshness of a vehicle. By determining whether the engine of a vehicle is turned on or off, and, when the engine is turned off, the inlet valve of a high-pressure pump can be operated for a predetermined amount of time, so as to prevent fuel from flowing backward to a low-pressure pump. [Reference numerals] (AA) Start; (BB) Starting Off?; (CC) Maintain the operation of an inlet valve, reduce the operational speed of the inlet valve; (DD) Rotation number of an engine = 0?; (EE) Release the operation of the inlet valve; (S10) General driving