Intake structure of internal combustion engine
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsAkira Yoshihara, Koichi Matsumoto, Shigeki Nabetani, Kazuaki Koyama, Yuya Okamoto
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Abstract
In an intake structure of an internal combustion engine, on an intake upstream side from a valve seat of an intake port, a convex portion is provided which protrudes to an inside of the intake port in a place near an outer circumferential portion of a cylinder chamber when viewed from an upper side of the cylinder chamber. The convex portion includes an upstream guide surface extending from an apex of the convex portion to the intake upstream side, and a downstream guide surface extending from the apex to an intake downstream side and including a curved surface recessed inside the convex portion at a middle portion thereof.
Claims6
An intake structure of an internal combustion engine, wherein
- on an intake upstream side from a valve seat of an intake port, a convex portion is provided which protrudes from a lower surface of the intake port in an upward direction to an inside of the intake port towards an upper surface of the intake port in a place near an outer circumferential portion of a cylinder chamber when viewed from an upper side of the cylinder chamber, and
- the convex portion includes:
- an upstream guide surface extending from an apex of the convex portion to the intake upstream side, an entire upstream guide surface having a curved concave shape, and
- a downstream guide surface extending from the apex to an intake downstream side and including a curved surface recessed inside the convex portion at a middle portion thereof.
Dependencies are inferred from the claim text.