| 摘要 |
A fuel supply system for a Gasoline Direct Injection (GDI) engine may include an Engine Control Unit (ECU) that sets a desired fuel pressure and controls a fuel pressure of a section from a low-pressure fuel pump to a high-pressure fuel pump in accordance with the desired fuel pressure, and a fuel pressure sensor that measures the fuel pressure of the section from the low-pressure fuel pump to the high-pressure fuel pump and supplies the measured fuel pressure to the ECU for feedback-controls of the low-pressure fuel pump. The fuel supply system may further include a fuel pump controller disposed between the ECU and the low-pressure fuel pump to control the low-pressure fuel pump. A control method of the fuel supply system may include detecting the number of revolution of the engine and the load, setting the desired fuel pressure, and feedback controlling the low-pressure pump. |
