| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply device and a fuel supply method of an internal combustion engine capable of suppressing generation of vapor during an idle stop period, while improving fuel consumption by lowering a fuel pressure after warming-up the engine.SOLUTION: In a fuel supply device of an internal combustion engine in which a pressure of a fuel pressure-fed from an electric fuel pump toward a fuel injection valve, is variably controlled according to an operation state of the internal combustion engine, the driving of the electric fuel pump is continued for a prescribed time after fuel injection by the fuel injection valve is stopped when the internal combustion engine is stopped in a warming-up state, so that a fuel pressure inside of a fuel pipe is raised to that for vapor countermeasure. By raising the fuel pressure in the fuel pipe by continuing the driving of the electric fuel pump after the driving of the fuel injection valve is stopped in a case when the idle-stop period is determined, generation of vapor can be suppressed during the idle-stop period even when the fuel pressure after warming-up the engine is lowered. |
