Patent ID: 6308558
Filing Date: 2001-10-30
Classification: F02B,Y02T

Abstract:
A method for checking the effect of and correcting swirl ducts in a multicylinder internal combustion engine, the method comprising the acts of:producing a swirl flow in a cylinder, subjected to a vacuum and having a swirl measuring device, said swirl measuring device being arranged on a combustion chamber side of a cylinder head wherein each cylinder head of said engine has at least one swirl duct;associating a cylinder-related swirl number with the swirl flow in each cylinder;determining a swirl number by formula from the cylinder-related swirl numbers thereby bringing the swirl number into a relationship with an engine-specific swirl tolerance band; andproviding the associated swirl duct in the cylinder head with a swirl duct section whose cross section is adjustable to be made smaller or larger in accordance with whether the swirl number is outside the swirl tolerance band.