| 摘要 |
PURPOSE: A filler door of a bus is provided to be automatically controlled by an ECU(electronic control unit) outputting a control signal controlling an electromagnet type step adjusting contact point and a control signal for controlling an electromagnet type lifting device. CONSTITUTION: An ECU(10) for a filler door inputs the signal of a starting switch(20) for sensing the starting of an engine, the signal of a filler door switch(30) for injecting fuel into a fuel tank and the signal of an infrared sensor(40) for sensing if a fuel gun is inserted into a fuel port. Then the ECU outputs a control signal for controlling the opening and the closing of the filler door with inputted signals. When the filler door switch is turned on and the starting switch is turned off, electromagnet type step adjusting contact points(a,b,c,d) are controlled. Furthermore, an electromagnet type lifting device(50) is controlled according to the signal of the infrared sensor to gradually open and close the filler door. Therefore, the filler door is automatically opened with the operation of the filler door switch.
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