High pressure line for common rail fuel injection system in internal combustion engine has longitudinal extent of inside diameter constriction small compared with extent of remaining diameter

摘要

The high pressure line (1) for a fuel injection system has at least in one section a reduced inside diameter, forming a constriction. The longitudinal extent (L1) of the constriction of the inside diameter (d1) is small compared with the longitudinal extent of the remaining diameter (d2), and the longitudinal extent between constrictions (2) varies in the longitudinal direction (4) of the HP line and may reduce constantly.