Patent ID: 7128049

Claim:
A flow guiding structure for guiding into a predetermined flow pattern a flow of gas flowing into a gas passageway leading towards a combustion chamber of an internal combustion engine, said gas passageway including a passageway delimiting wall and defining a passageway axis, said structure comprising: a substantially tubular peripheral wall delimiting a structure passage, said peripheral wall defining a peripheral wall first edge, an opposed peripheral wall second edge and a passage longitudinal axis; said peripheral wall having a base section extending from said peripheral wall first edge for allowing said structure to be secured to said gas passageway; said peripheral wall also having a guiding section extending substantially from said base section to said peripheral wall second edge for allowing said flow of gas to be guided into said predetermined flow pattern; a plurality of guiding vanes, each extending substantially radially inward from said guiding section about a corresponding vane first edge; each of said vane first edges extending from a first edge proximal end located substantially adjacent said base section to a first edge distal end located substantially adjacent said peripheral wall second edge; at least one of said guiding vanes including a vane second edge extending in a second edge geometrical plane substantially perpendicular to said structure longitudinal axis from said first edge distal end to a second edge distal end; said at least one of said guiding vanes also including a vane third edge extending from said second edge distal end to said first edge proximal end.