| 摘要 |
<p>The invention provides an injection nozzle (4) for an internal combustion engine, the injection nozzle comprising a nozzle body (6) defining a seating surface (28) and having a first nozzle outlet (12), an outer valve member (10) received within the nozzle body (6) and being engageable with an external seating (32) defined by the seating surface (28) so as to control fuel injection through the first outlet (12), the outer valve member (10) being provided with a bore (52) having an internal bore surface and an insert (50; 104) received within the bore (52). The insert (50; 104) includes a part-spherical head (50a; 105) which spans the internal diameter of the bore (52) to define an annular gap (55) with the internal bore surface, wherein the outer valve member (10) is engageable with an internal seating (56) defined by a surface of the part-spherical head (50a) to control fuel flow through the annular gap (55) to the first outlet (12).</p> |
