| 摘要 |
PROBLEM TO BE SOLVED: To surely discharge high-temperature leak fuel in a leak collection groove.SOLUTION: The fuel of a fuel gallery 19 is supplied to a leak collection groove 21 via a fuel bypass passage 24. A throttle 13e is arranged in fuel return passages 13d, 44 which return the fuel of the leak collection groove 21 to a fuel tank 41. The pressure of the leak collection groove 21 at an upstream side rather than the throttle 13e becomes substantially equal to the pressure of fuel which is supplied to the fuel gallery 19, and becomes higher than pressure at a downstream side rather than the throttle 13e, and then, the fuel surely flows toward the fuel tank 41 from the leak collection groove 21. That is, the high-temperature leak fuel in the leak collection groove 21 is surely discharged to the fuel tank 41 side without being stagnated in the leak collection groove 21.SELECTED DRAWING: Figure 1 |
