The invention relates to a cylinder head (1) for an internal combustion engine. Said cylinder head (1) comprises at least one intake channel (2) comprising an intake port (3). The intake channel (2) comprises an upper wall (4), a lower wall (5) and an end ...

An intake port structure (1) includes a collector passageway (2) disposed in an upstream section and the first and second branching passageways (3 and 4) disposed in a downstream section that branch from the collector passageway (2). The intake port struct...

An intake port of an internal combustion engine having an intake passage curved to a certain direction and communicated with a combustion chamber of the engine to send air into the combustion chamber, provided with a groove provided in a wall at a side nea...