Acoustic chamber for suction noise damper of internal combustion engine, has chamber volume changing unit has bend- or foldable regions, where decrease or increase of volume of chamber is caused by folding or unfolding regions

摘要

The chamber (1) has tubes (2, 3) for supplying and removal of a sound-producing air volume. A chamber volume changing unit has bend- or foldable regions (4, 5) of a chamber wall and/or a transition between the chamber and the tubes, where a decrease or increase of volume of the chamber is caused by folding or unfolding the regions. The regions are arranged at the transition between the chamber and tubes such that the increase of the volume is caused by temporal extraction of one of the tubes. The chamber is formed as a blow molded part or injection molded part made of plastic.