| 摘要 |
PURPOSE:To accurately keep the air fuel ratio constant in the range from high flow rate to low flow rate and consequently contrive to stabilize the combustion and to improve the combustion efficiency by a method wherein both gas and air are controlled their amounts in volumetric flow rates and yet mixed with each other by means of a mixer. CONSTITUTION:The titled device consists in providing a fuel control pump 11, which controls fuel by varying the volumetric flow rate of gas, an air control pump 15, which controls air by varying the volumetric flow rate of air, driving elements 25 to drive said pumps 11 and 15, a gas-and-air mixer 17 at the delivery sides of the fuel control pump 11 and the air control pump 15 and at the same time a detector 22 for load of combustion chamber and a controller 23 to control the driving elements 25 in response to the signal from the detector 22. Because both gas and air are controlled their amounts in volumetric flow rates and yet mixed with each other by means of the mixer 17, the air fuel ratio can be accurately kept constant in the wide combustion range from high flow rate to low flow rate, resulting in eliminating incomplete combustion and the like and contriving to improve the combustion efficiency. |
