| 摘要 |
PURPOSE:To prevent the interference between cylinders causing the dispersion of the injection timing and injection quantity by providing a check member allowing the feed of fuel to an injection valve and restricting the pressure transfer to a common rail in the middle of a pipe of fuel from the common rail to the injection valve. CONSTITUTION:A check valve 62 is provided as a check member in the middle of an injection pipe 37 from a common rail 38 to an injection valve 36. The check valve 62 is formed with a fuel passage 64, a valve body storage chamber 65, and a fuel passage 66 in a housing 63, and a ball valve 67 and a spring 69 are arranged in the valve body storage chamber 65. The ball valve 67 is lifted by the internal pressure of the common rail 38 to feed fuel in operation, when the fuel injection by the injection valve 36 is completed and the reflected wave is generated on the common rail 38 side from the injection valve 36 side in the injection pipe 37, the ball valve 67 is closed to prevent the reflected wave from being transferred in the common rail 38. The interference between cylinders causing the dispersion of the injection timing and injection quantity can be prevented. |
