| 摘要 |
PURPOSE:To regulate fuel supply according to an amount of secondary air by introducing into the float chamber of a carburetor, the pressure corresponding to the secondary air pressure introduced through an inlet opened and closed by a piston. CONSTITUTION:A pressure leading passage 2 is branched from a surging chamber 16 in a secondary air introduction passage 4, while said passage 2 is opened to the float chamber 12a of a carburetor through a pressure reduction device 23. A fuel control device is so constructed that the pressure, corresponding to the secondary air pressure introduced through a secondary air inlet 3, is introduced in to said float chamber 12a. Thus, since the fuel in said float chamber 12a is subjected to the pressure in said surging chamber 16, that is, the pressure corresponding to the secondary air pressure introduced through a pump 5, the amount of the fuel led to a cylindr 1 is increased in response to said pressure. |
