| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply device for reducing noise.SOLUTION: A springless external remaining pressure holding valve 473 has a valve element 478 which is opened to be locked to a valve stopper 479. A spring-energized internal remaining pressure holding valve 475 has a valve element 475b which is opened against spring reactive force. A communication port 470e opens to a position R displaced from the valve 475 to the side of the valve 473 in a fuel passage 470. The fuel passage 470 forms an external passage part 470f for distributing fuel to be discharged to the side of an internal combustion engine 3, from the communication port 470e to the side of the valve 473, and an internal passage part 470g for further restricting the flow of fuel to be distributed from the communication port 470e to the side of the valve 475, than the external passage part 470f. When the passage cross section area of the internal passage part 470g is converted as the passage cross section area of a cylindrical pipe P, a passage diameter D of the cylindrical pipe P and a length L of the internal passage part 470g satisfy L/D≥3.SELECTED DRAWING: Figure 1 |
