Heat exchanger, especially for motor vehicle internal combustion engine, has second channel with several tubes in group wound in helical shape about common imaginary rod

摘要

The device has a first channel through which a first heat exchange medium flows and a second channel (18) in a heat exchange region of the heat exchanger within the first channel and through which a second heat exchange medium flows. The second channel has several tubes (26) in a group (28) wound in a helical shape about a common imaginary rod.