FIELD: engines and pumps.
SUBSTANCE: fuel injector of a gas turbine engine combustion chamber comprises the first pipeline of fuel supply, providing for operation in idle mode, and the second main pipeline of fuel supply, providing for operation in other modes, including operation at full capacity, and also the first inlet holes for operation in idle mode and the second main inlet holes, with which two supply pipelines are connected accordingly. The fuel injector comprises a certain number (n1) of the first holes and a certain number (n2) of the second holes at the ratio of n1/n2<1. Inlet holes are arranged in the form of a ring, and the first holes for operation in idle mode occupy a sector of the specified ring. At the same time the injector comprises a central channel of primary air supply, and holes of injection are arranged in the form of a ring around this central hole.
EFFECT: invention provides for stepped burning, making it possible to create a zone of burning in idle mode and the main burning zone, which comply with requirements of pollutants emission.
14 cl, 4 dwg
