| 摘要 |
A water cooled exhaust tube, especially for boats, comprises an outer housing (3) formed as a tube, an inner tube (1) extending coaxially in the housing, at a radial distance from the latter, and a cam (7), extending in a screw line shaped manner in the longitudinal direction of the housing, spanning the distance between the housing (3) and the inner tube (1) and forming a channel (11), extending in a screw line shaped manner between the housing (3) and the inner tube (1). The inner tube (1) conducts the exhausts gases while the channel (11) conducts cooling water separately from the exhaust gases. The exhaust tube is flexible since all parts are made in rubber. In the inner tube (1) silencing means (17) can be arranged to from a silencer. The inner tube (1) is adapted to be replaceable int he outer housing (3) and can be a rubber hose.
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