Coupling for high-pressure fuel pipe and common rail has flared end on fuel pipe engaging with collar and conical tip of common rail head

摘要

The coupling for a high-pressure fuel pipe (2) connected by a locking nut (4) to a head (3) with a truncated conical tip (31) on a common rail (1) consists of a flared end (21) on the fuel pipe having the same angle of taper as the tip (31). In addition, the tip has an annular collar (32) of hemispherical section to ensure a linear contact with the high-pressure pipe.