| 摘要 |
PURPOSE: A fuel pressure control method in a gasoline direct injection system is provided to prevent combustion residues from being left on an inner wall of a cylinder by directly spraying fuel inside the cylinder and controlling an injection distance without changing hardware. CONSTITUTION: A fuel pressure control method in a gasoline direct injection system comprises an angle sensor(210), a fuel pressure sensor(220), an air volume measuring sensor(230), and an engine controller(240). The angle sensor measures the RPM(Revolution Per Minute) of an engine. The fuel pressure sensor measures the pressure of fuel sprayed into a cylinder inside. The air volume measuring sensor measures amount of the air flowing into the cylinder inside. The engine controller controls the pressure of the fuel flowing into the cylinder by analyzing signals inputted from each sensor. |
