| 摘要 |
<p>A fuel injection valve includes: a needle valve including a seat portion in a front end side; a nozzle body including a seat surface on which the seat portion sits, and including an injection hole at a downstream side with respect to the seat surface; and an injection-hole extending member including: a pressure receiving portion that receives pressure in a combustion chamber of an engine; and a movable portion that moves in the injection hole in an axial direction of the injection hole in response to the pressure received by the pressure receiving portion, and that changes length of the injection hole. Thus, in a case where it is desirable that a spray angle is increased, for example, in a case of the compression stroke injection, the movable portion is moved to the back side of the injection hole, so that the injection hole length is shortened, thereby increasing the spray angle.</p> |
