| 摘要 |
In combustion equipment of the multiple chamber of tubo-annular type, the emission of NOx can be reduced by providing each cylindrical combustion chamber with a pre- mixing zone 22 in which a relatively weak fuel/air mixture is substantially vapourised before passing into a main mixing and combustion zone, (24) Fig. 1 (not shown) and a pilot zone 20 in which a relatively richer fuel/air mixture is mixed and partially burnt in stable combustion conditions bedore mixing with the fuel/air mixture from the pre-mixing zone in the main combustion zone. The pre-mixing and pilot zones are fuelled from a single fuel injector 34 for each combustion chamber, the injector having a nozzle (50) for injecting fuel into the pre-mixing zone and a number of other angularly directed nozzles 52 for injecting fuel into the pilot zone at circumferentially spaced locations. <IMAGE> |
