Intake device for a piston-type combustion engine

摘要

The intake system comprises branches (14) alongside each other in the lengthwise direction lead from the cylindrical plenum chamber (10) to the individual cylinders. A shutter (11) turns in the chamber between two end positions and incorporates ports connecting the chamber to each branch. It is guided in a cylindrical wall (12), which contains ports (15) of the same diameter as the branches. The ports in the shutter can be double the size of those in the wall, which can be of variable dimensions. The shutter can be driven by an electric motor, and the individual branches can be connected together via resonance shutters. Each branch can be connected to a centrally-guided telescopic tube adjustable to give the necessary branch length.