| 摘要 |
PURPOSE:To prevent air valve actions from being inhibited due to carbonized residual fuel by making a valve perform prescribed opening and closing actions when a main switch is turned off and an engine is stopped. CONSTITUTION:There are provided the first relay 5 and the second relay 6 between an electromagnetic coil 27 for driving a control unit 4 and a valve 23 in an engine, and a power supply 34 to make two feeder systems. Also, the control unit 4 is provided with an auxiliary control part 4d, so that an auxiliary driving control signal D is outputted to a driving circuit 3 to drive the electromagnetic coil 27 when an ignition switch 7 is off and the engine is stopped. It is thus possible to drive the valve 23 after the engine is stopped by the operation of the ignition switch 7, so the fuel confined in an air chamber at the time of engine stop can be emitted by air residual pressure at the outside of the air chamber.
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