| 摘要 |
<p>An injection nozzle for use in delivering fuel to a combustion space comprises a nozzle body (25) provided with a blind bore within which a valve member (20) is slidable. The valve member (20) comprises a first region (20a) of substantially frusto-conical form defining a seating surface (24a) which is engageable with a valve seating surface (27), defined by the blind bore, to control fuel delivery from the injection nozzle, and a second region (20b) arranged such that, when the valve member (20) is seated against the valve seating surface (27), in use, the second region (20b) is located downstream of the valve seating surface (27). The first region (20a) subtends a first cone angle (θ1) which is greater than a second cone angle (θ2) subtended by the second region (20b).</p> |
