| 摘要 |
PURPOSE:To obtain an adequate gas mixing ratio through simple constitution by controlling one control valve, provided to a fuel gas duct, on the basis of the static pressure of the fuel gas duct and an air duct. CONSTITUTION:For a gas mixing ratio control method for optimizng the gas mixing ratio of fuel gas from a fuel gas duct 2 and air from an air duct 8, the fuel gas duct 2 is provided with a control valve 18 which controls the flow rate of the fuel gas. For this purpose, the control valve 18 is given an extent of opening suitable to pressure (aP2-bP1), where P1 is the static pressure of the fueled gas duct 2 on the downstream side of the control valve 18, P2 is the static pressure of the air duct 8, and (a) and (b) are adequate positive constants. Thus, the gas mixing ratio is optimized through the simple constitution. |
