High-pressure line inside fuel injectors and suchlike has sections in which flow direction is reversed and in these sections has recirculation areas connected to flow restriction of determined width

摘要

The high-pressure line (3) inside fuel injectors and suchlike has sections in which flow direction is reversed, whereby in the injection direction (S) in these sections recirculation areas (5) are encountered which are connected to a flow restriction of determined width (8). The aforesaid sections in the control direction have a cross sectional variation (10) such that directly after the flow reversal a first region with a smaller cross section (11) is provided and to it is connected a region of larger cross section (12). The smaller cross section is dimensioned in such a way that it corresponds to the width of the flow restriction.