| 摘要 |
The present invention relates to a fuel supply apparatus for a GDI engine capable of reducing pressure pulsation which occurs in a low pressure fuel pump. The fuel supply apparatus comprises: a low pressure fuel pump (21) installed in a side of a fuel tank (10); a high pressure fuel pump (31) installed in an engine (30) and connected to the low pressure fuel pump through a fuel supply line (40); and a pressure sensor (43) measuring the fuel pressure of the fuel supply line and outputting the result to ECU (51) between the low and high pressure fuel pumps. Between the low and high pressure fuel pumps, a check valve part (61) is installed to pass the fuel from the low pressure fuel pipe to the high pressure fuel pump and to block the fuel in the opposite direction; and an orifice part is installed to pass, in the booth directions, less amount of the fuel than the fuel flowing in the direction of easy flow. |
