| 摘要 |
PURPOSE:To switch fuel for starting into the fuel for continuous operation by a method wherein a temperature sensitive switching valve, detecting engine temperature and switching suction vacuum supplied to a vacuum fuel cock, is provided to utilize the suction vacuum available from the internal-combustion engine. CONSTITUTION:When the engine is in a cold state, a vacuum switching valve 16 is in the position of non-operation, a vacuum outlet port 45 is intercepted to communicate a vacuum inlet port 46 with another vacuum outlet port 47 and the suction vacuum of the internal-combustion engine is being supplied to a vacuum cock 6 through pipelines 15, 18, therefore, fuel from a fuel tank 2, in which the fuel for starting is reserved, is supplied to the fuel inlet port 61 of a carburettor 10 through the pipelines 8, 9. When the warm-up of the internal-combustion is finished, the communication of the vacuum inlet port 47 is intercepted, the vacuum inlet port 46 is communicated with the vacuum outlet port 45, the suction vacuum of the engine operates the vacuum cock 5 and the fuel to continue the operation is supplied to the carburettor 10 through the pipelines 7, 9. |
