Exhaust heat exchanger arrangement for internal combustion engine in motor vehicle, has working medium in working medium channel is used for Rankine process, where working medium channel is formed by swirl tube with swirl element

摘要

The exhaust heat exchanger arrangement (1) has an exhaust gas heat exchanger (5) that is provided with an exhaust duct for conducting the exhaust gas from an internal combustion engine (2) and a working medium channel (9) for performing a working medium. The working medium in the working medium channel is used for a Rankine process, where the working medium channel is formed by a swirl tube (16). A swirl element is provided in the swirl tube, where the working medium is set into a rotating swirling motion by the swirl element. The swirl element is designed as a wedge-shaped guide fin. An independent claim is included for a method for manufacturing a swirl tube for an exhaust gas heat exchanger.