| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine for a working machine capable of using fuel different in the concentration of included ethanol. SOLUTION: Since the mixing ratio of fuel and air in an air-fuel mixture supplied to a combustion chamber 8 is adjusted according to a rate of the ethanol included in the fuel used by a carburetor 100, the fuel in the air-fuel mixture can be set as a proper quantity corresponding to the rate of the ethanol included in the fuel, and even the fuel different in the content of the ethanol can surely start the engine, and a required output can be obtained. COPYRIGHT: (C)2011,JPO&INPIT
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