FUEL INJECTION VALVE

To provide a fuel injection valve capable of suppressing dispersion of a fuel injection amount while applying a core boost structure.SOLUTION: A fuel injection valve includes a needle 20 (valve element), a fixed core 13, a movable core 30, a first spring member SP1 (spring member) and a cup 50 (valve closing force transmission member). The first spring member SP1 is elastically deformed in accompany with valve opening motion of the needle 20, and exerts valve closing elastic force for making the needle 20 perform a valve closing motion. The cup 50 is brought into contact with a valve closing-time valve element contact face formed on the needle 20 to transmit the valve closing elastic force to the needle 20. The cup 50 is kept into contact with the valve closing-time valve element contact face at a timing when the movable core 30 starts movement by a prescribed amount with the cup 50, and the needle 20 has a supply flow channel 20e for supplying a fuel to the valve closing-time valve element contact face in a state of being kept into contact with the cup 50.SELECTED DRAWING: Figure 12 【課題】コアブースト構造を採用しつつ燃料噴射量のばらつき抑制を図った燃料噴射弁を提供する。【解決手段】燃料噴射弁は、ニードル２０（弁体）、固定コア１３、可動コア３０、第１バネ部材ＳＰ１（バネ部材）およびカップ５０（閉弁力伝達部材）を備える。第１バネ部材ＳＰ１は、ニードル２０の開弁作動に伴い弾性変形して、ニードル２０を閉弁作動させる閉弁弾性力を発揮する。カップ５０は、ニードル２０に形成された閉弁時弁体当接面に当接して閉弁弾性力をニードル２０へ伝達する。可動コア３０がカップ５０とともに所定量移動を開始する時点では、カップ５０は閉弁時弁体当接面に当接しており、ニードル２０は、カップ５０と当接している状態の閉弁時弁体当接面へ燃料を供給する供給流路２０ｅを有する。【選択図】図１２