| 摘要 |
PURPOSE:To directly control a fuel control valve by a digital signal, by forming a slit gate valve constituted of a shaft having a slit and a case having a slit, and driving the shaft by a stepping motor shaft. CONSTITUTION:A shaft 2 is formed with a slit 3 extending in a radial direction thereof, and a case 4 having a hole fitted with the shaft 2 is formed with a similar slit 5. A passage area of the slits is relatively changed by rotating the shaft 2. A lever 6 is fixed to the other end of the shaft 2 to form a circumferential stopper in cooperation with a pin 7 fixed to a case of a stepping motor 1. A valve is directly controlled to be driven by a stepping motor 1 with a digital signal. Accordingly, error of a valve opening degree may be minimized without necessitating analog conversion, and a valve structure may be simplified. |
