High pressure conduit connection for nozzle holder of fuel injection valve on IC engine cylinder head

摘要

The conduit connection comprises a tension piece enclosing a nozzle held at the level of a fuel feed or, with threaded connection in which engages a clamp screw. The tension screw is formed as a long penetration screw passing through the cylinder head wall (2a) in a sealed fashion, with a through passage hole (19) running crossways to its longitudinal axis between a ring-shaped widened formation (16) and a sealing ring. The sealing ring under tension locates on the one hand on the tension screw and on the other hand on a threaded connection (10). On both sides of the seat surface (18) on the nozzle holder (1), sealing rings (7,8) locate on the nozzle holder and the tension piece (9). The sealing rings are formed as O-rings. The O-rings solely working in conjunction with the ring-shaped tension piece are embedded in peripheral grooves (5,6) of the nozzle holder.