Patent ID: 7150267
Filing Date: 2006-12-19
Classification: F02B,F02F,F02M,Y02T

Abstract:
1. An intake port structure for an internal combustion engine comprising: an intake air passage including a collector passageway and a pair of first and second branching passageways branching from the collector passageway toward first and second intake valve openings, respectively; a fuel injector arranged in the intake air passage to inject a fuel stream into intake air that flows through the intake air passage; and an intake air flow impact section formed on a crotch portion between the first and second branching passageways with a downstream edge of the intake air flow impact section being disposed downstream of upstream edges of imaginary tubes projected from the first and second intake valve openings in a direction parallel to a center combustion chamber axis with respect to the intake air flowing in the intake air passage such that a portion of the intake air flowing in the intake air passage collides against the intake air flow impact section to laterally disperse the intake air into the first and second branching passageways at areas encompassed by the imaginary tubes.