| 摘要 |
PURPOSE:To have a good performance of engine operation by substituting the high-temp. fuel with a low-temp. fuel stored in a fuel tank, when the fuel temp. has exceeded a certain specific level, and thereby securing the carburettor with good performance. CONSTITUTION:This is installed on the wall 30 of a float chamber. When the fuel temp. of No.1 temp. sensing element 36 exceeds a certain specific level, the acutating pressure introduced from a crank chamber through No.1 pressure passage 40 reaches No.2 pressure passage 42 to drive a fuel pump 44. No.2 temp. sensing element 38 is connected with a fuel takeout hose 48 in communication to a fuel takeout hole 46 provided inside a float chamber 6, and the other end of this hose 48 is connected with said fuel pump 44. The other end of the feedback pipe 50 of fuel pump 44 is put in communication with the fuel tank. High-temp. fuel in the float chamber 6 is introduced from the fuel takeout hole 46 to the fuel hose 48 to be sent back to the fuel tank through the fuel pump 44, while the low-temp. fuel is supplied to the float chamber 6 from the fuel tank. |
