| 摘要 |
PURPOSE:To reduce the size of a combustion chamber and to improve reliability of temperature regulation, by a method wherein second gas feed pipe is installed to the inside of a first gas feed pipe to form a heat-responding element, and the second gas feed pipe forms a passage for evaporated fuel gas and air-fuel mixture. CONSTITUTION:When a catalyst 13 starts to burn, first and second gas feed pipes 11 and 9 are increased in temperature. In which case, the coefficient of expansion of the gas feed pipe 9 is higher than that of the first gas feed pipe 11, and thereby, with increased temperature, a control lever 16, connected to the gas feed pipe 11, and a sliding member 5 of a gas discharge regulating valve are pushed upward through the elastic force of a spring 18 to decrease a gap between a control valve 7 and a fixed valve seat 4 of the gas discharge regulating valve, and this results in decrease in the flow rate of evaporated fuel gas, resulting in reduction in a combustion amount. This enables reliable setting of temperature, improvement of long-term reliability, and reduction in the size of a combustion chamber. |
