Line system i.e. oil return line system, for returning engine oil for e.g. cooling of internal combustion engine, to oil sump during engine operation, has docking line whose collar completely encloses passage of pipe line in mounted state

摘要

The system has a passage (12) formed in an outer wall (11) of a pipe line (10). A round docking line (13) is firmly bonded to the outer wall in a region of the passage in a mounted state. The docking line comprises a collar (14) that completely encloses the passage in the mounted state, where width of the collar is 1 millimeter. The collar is adapted to a contour of the outer wall and manufactured by a shaping process. The pipeline and the docking line are soldered with each other through the collar in the mounted state, where the pipe line and the docking line have same outer diameter.