| 摘要 |
PURPOSE:To always perform good atomization of fuel from an injection valve, in a device provided with the fuel injection valve in the upstream side of a throttle valve, by mounting the injection valve in such a manner that an axial extension line of the injection valve intersects the throttle valve in the lower side of a shaft of the throttle valve. CONSTITUTION:An injection valve 5, injecting fuel, is diagonally mounted to a throttle chamber 4 to a throttle valve 3 in the throttle chamber 4. In such a device, the injection valve 5 is set in such a manner that an extension of its injection hole axial line crosses with the throttle valve 3 in a lower portion from the shaft center of the throttle valve 3. That is, the injection valve 5 is arranged in such a manner that a straight line A, connecting the center of the throttle valve 3 and the center of spray of the injection valve 5, is positioned in the downstream side of the throttle valve 3. In this way, at rotation of the throttle valve 3 clockwise, a distance L, between the throttle valve 3 and a nozzle outlet of the injection valve 5, is gradually increased, and fuel from the injection valve 5 can be always well atomized. |
