| 摘要 |
PURPOSE:To secure the stable behavior of a needle valve by projectingly providing a guide which guides the movement of a spring between a movable core and a fixed iron core, on the end part of a adjust rod positioned in the central part of said movable core of the captioned injection valve. CONSTITUTION:In the captioned injection valve, a tubular fixed iron core 6 is fixed to the central part of a housing, and a movable core 20 which is provided leasing a space from said iron core 6, can be attracted toward the fixed core 6 side by the excitation of an exciting coil 8. A needle valve 3 which opens and closes the fuel injection port 5 on the end of a nozzle body 2, is connected in an integrated from with the movable core 20. A spring 19 is provided between an adjust rod 18 provided in the fixed iron core 6 and the movable core 20, energizing the movable core 20 in the valve closing direction. A guide 18a which is inserted in the spring 19, is formed in an integrated form with the end part of said adjust rod 18, to make it guide the movement of the spring 19. |
