Internal combustion engine with intake ducts arranged to produce high turbulence in the feed air flow

摘要

The internal combustion engine (1), particularly of diesel type, is provided with at least one pair of side-by-side cylinders (5, 6) with their intake ports (7) disposed adjacent to each other; a first (5) and a second (6) cylinder of said pair are fed by a first and by a second intake duct (11 ,12) of volute type which are connected to the adjacently disposed intake ports (7) provided in the engine cylinder head (2); this latter is provided with at least one cavity (15, 16) arranged to connect together the first and second intake duct (11, 12) by defining at least one tangential communication port (18, 19) between them, so that during the staggered intake stages of the first and second cylinder (5, 6), the air is conveyed from one to the other duct (11, 12) to increase the vorticity.