Combustion system

Claim 1

An engine having in combination, air supply means, fuel supply means, a combustion section, said combustion section having burner means, said combustion section having an inlet area for air from said air supply means, said fuel supply means including a metering control for providing a desired overall fuel flow to said burner means, said metering control directing its flow to a fuel manifold, said fuel manifold having a plurality of conduit means extending therefrom, each conduit means being connected to said burner means by an ejector unit, each ejector unit having a driving fluid inlet which receives air flow from one point in said inlet area, each ejector unit having a suction inlet connected directly to its cooperating conduit means, each ejector unit having an outlet for the mixture of said air and fuel, the amount of metered overall fuel flow being sucked into each ejector unit being dependent on the air flowing through its cooperating driving fluid inlet to maintain a substantially constant fuel-air ratio throughout, said driving fluid inlet being a cylindrical member having swirl vanes therearound to produce the low pressure for acting on the cooperating suction inlet.