Ansaugrohr einer Verbrennungskraftmaschine

An intake manifold for use with a combustion engine is disclosed. The intake manifold comprises a dimensionally stable induction pipe body having at least one first flow-through opening and at least one first adjusting element arranged in the first flow-through opening to vary the available cross-sectional area of the passage. This adjusting element takes the form of a throttle valve, which is rotatably supported in the induction pipe body and which is capable of being forced to engage sealingly with the boundary wall of the first flow-through opening. In the area of the throttle valve, the induction pipe body has at least one second flow-through opening, which is allocated as a by-pass so as to be adjacent to the first flow-through opening, said second flow-through opening being capable of being sealed by at least one second adjusting element, which is comprised of a one-way valve that is only able to be forced into an open position in the direction of the attached combustion engine.