| 摘要 |
<p>Valve assembly (80) of an injection valve (82), the valve assembly (80) comprising a valve body (4) including a central longitudinal axis (L), the valve body (4) comprising a cavity (8) forming an inner surface (18) of the valve body (4), the cavity (8) having a fluid inlet portion (42), and a fluid outlet portion (44), a valve needle (10) axially movable in the cavity (8), the valve needle (10) preventing a fluid flow through the fluid outlet portion (44) in a closing position and releasing the fluid flow through the fluid outlet portion (44) in further positions, the valve needle (10) and/or the inner surface (18) of the valve body (4) having a surface layer (48) comprising a tungsten carbide layer (70) and a carbon layer (72).</p> |
