| 摘要 |
PURPOSE:To contrive to reduce nitrogen oxides in exhaust gas by a structure wherein a premixing chamber to mix fuel with combustion air is arranged at the head of a combustor and a main combustion chamber is arranged on the downstream side of the premixing chamber. CONSTITUTION:A premixing chamber 25 to mix fuel with combustion air is arranged at the head of a combustor so as to perform premixed combustion in order to prevent hot spots from generating in flame and consequently to check the generation of NOx strikingly and at the same time a main combustion chamber 26, the diameter of which is larger than that of the premixing chamber, is arranged on the downstream side of the premixing chamber 25. In addition, pilot burners to perform diffusion combustion are arranged at the junction part of the premixing chamber 25 and the main combustion chamber 26 so as to generate pilot flame in order to prevent an engine from overcooling. In such a manner as mentioned above, NOx, CO and HC in exhaust gas are strikingly reduced. |
