Short circuit primary turbulence system for a combustion engine.

摘要

A four-stroke combustion engine (1) has a combustion chamber (5) formed in a piston (4). In the cylinder head (6) there are a main intake passage (10) and a parallel intake passage (11) both for air. At one end the passage (11) opens with its outlet port (14) into the passage (10) directing air towards a spark plug gap (8). At the other end the passage (11) has an inlet port (17) which together with inlet port (16) of passage (10) is coupled to a single air chamber (15).