Device for influencing an exhaust gas flow for controlling sound emissions in a exhaust gas branch of an engine comprises a flap and a section of a rotary shaft lying next to the flap made from one piece

摘要

Device for influencing an exhaust gas flow comprises a flap (28) and a section of a rotary shaft (30) lying next to the flap made from one piece. An independent claim is also included for a method for the production of the device. Preferred Features: The flap and the section of a rotary shaft lying next to the flap are made from a metal core surrounded by a ceramic. The flap and the section of a rotary shaft lying next to the flap have a hollow chamber structure.