Exhaust system

摘要

A component of an exhaust system for a combustion engine, particularly of a motor vehicle, has a hollow jacket at least partially surrounding the component. An intermediate space is surrounded by the walls of the hollow jacket and is closable in a pressure-tight manner. The intermediate space is fluidically connected to a vacuum generating device via a vacuum connection line and via a vacuum connection point of the component. With the vacuum generating device, a vacuum can be generated in the intermediate space. Through arrangement of a filler material, such as a support structure and/or of a fiber material and/or of a foam, in the intermediate space the stability of the hollow jacket can be improved.

主权项

1. A component of an exhaust system for a combustion engine, the component comprising:
a hollow jacket wall forming a first component exterior and with a first intermediate space surrounded by the hollow jacket wall and which hollow jacket wall comprises a ventilation connection point, the first intermediate space being fluidically connected to a ventilation device via a ventilation connection line and via the ventilation connection point, whereby fluid can be supplied to the first intermediate space from an area surrounding the component; another hollow jacket wall forming another component exterior and with a second intermediate space surrounded by the another hollow jacket wall, said another hollow wall being closed except for at least one connection point that is closable in a pressure-tight manner, wherein the at least one connection point comprises a vacuum connection point and the second intermediate space is fluidically connected via the vacuum connection point to a vacuum generating device through a vacuum connection line; and an intermediate connecting line, said first intermediate space and said second intermediate space being connected in series via said intermediate connecting line, wherein said ventilation connection point and said vacuum connection point are selectively opened and closed to create a vacuum in the second intermediate space and to create ambient pressure in the first intermediate space.