| 摘要 |
PROBLEM TO BE SOLVED: To accurately control a fuel injection quantity of a returnless fuel system. SOLUTION: A pressure regulator 75 is disposed in a fuel tank 11 to control the pressure of fuel force-fed from a fuel pump 70 to a fuel injection valve 101 of an internal combustion engine 100 via fuel supply piping 71 so that a constant differential pressure is maintained to a fuel tank internal pressure. An electronic control unit(ECU) 30 for the engine sets a fuel injection time of the fuel injection valve according to an engine operating state, and corrects the fuel injection time according to the fuel tank internal pressure detected by a pressure sensor 33. Even under a fluctuation in the fuel tank internal pressure, a fuel quantity injected from the fuel injection valve is controlled accurately.
|
