Patent ID: 6435152
Filing Date: 2002-08-20
Classification: F02B,Y02T

Abstract:
An induction device for an internal combustion engine with an intake duct comprising at least one resonance pipe connected via a resonance volume with at least one ram pipe; wherein said induction device is switchable to effect ram charging or resonance charging in the intake duct, and wherein the at least one ram pipe and the at least one resonance pipe have geometries which are adjustable within predetermined limits, wherein said device comprises a number of resonance pipes corresponding to the number of cylinders of the internal combustion engine, and an equal number of ram pipes located alternately between the resonance pipes, a rotatable adjustment disk arranged in each of the resonance pipes for continuously varying the effective length of the resonance pipe from a precollector up to the resonance volume, and a rotatable adjustment disk arranged in each ram pipe for continuously varying the effective length of the ram pipe from the resonance volume up to a cylinder inlet of the internal combustion engine, and wherein said adjusting disks are mounted on a motor driven central support shaft for rotation therewith.