Patent ID: 8622044

Claim:
An intake arrangement for a combustion chamber, comprising: a first intake duct configured to produce a first substantially rotational flow in the combustion chamber; and a second intake duct configured to produce a flow having a first component and a second component, the second intake duct comprising: a first branch having a first end that is arranged to open into the combustion chamber; a second end connected to a second branch, the second branch extending transversely of the first branch, and a junction of the first branch and the second branch that has an outer part-cylindrical wall with a first longitudinal axis substantially parallel to a second longitudinal axis of the combustion chamber and an inner part-cylindrical wall substantially coaxial with the outer part-cylindrical wall, wherein the first component is directed axially into the combustion chamber, and wherein the second component represents a second substantially rotational flow in the combustion chamber and the first substantially rotational flow and the second component have a same sense of rotation.