| 摘要 |
PURPOSE:To prevent abnormal combustion from taking place by a structure wherein a detecting means consisting of a light emitting element and a light receiving element is provided opposite to the liquid level gage of an auxiliary tank. CONSTITUTION:A detecting means consisting in providing a light emitting element 18 and a light receiving element 19 at the position confronting with a liquid level gage 14 provided on the side surface of a detachable auxiliary tank. In addition, a reflecting member 22 is arranged at the position opposite to the detecting means 20 so as to stop combustion after the predetermined period of time or instantaly after the detection of the emission of light of the light emitting element 18 by the light receiving element 19, when the fuel in the auxiliary tank falls below the predetermined liquid level or when the auxiliary tank is taken away. Thus, the abnormal combustion, which happens at a means to stop combustion by detecting the liquid level in a main tank with a float switch, can be prevented from occurring. |
