More durable flexible tube section for hot exhaust gases from vehicular internal combustion engines

摘要

This new flexible tube section is especially suitable for exhaust gases and exhaust gas recycle. Its end connections are cylindrical; its construction single or multilayer, in metal. It includes at least two, ring-corrugated bellows, spaced axially. Connecting the bellows, formed-on in one piece, there is an intermediate tube with a wall corresponding to the bellows material in thickness. The inner diameter of the intermediate tube corresponds essentially with the open inner diameter of the bordering bellows. In this new construction, a reinforcing tube (11) is provided. This is concentric with the intermediate tube (3) and radially spaced outside it. Its ends are connected with the radially projecting first peak sections (4, 5) of the bellows (1, 2) where they connect to the intermediate tube