| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve including a piezoelectric laminate, capable of reducing a controllable minimum injection quantity and reducing irregularities in fuel injection quantity. ! SOLUTION: A spring 59 energizing a discharge valve 32 in a valve closing direction only in a region in which a lift amount L of the discharge valve 32 is equal to or greater than a predetermined shift amount L1 (L≥L1) is provided. With this configuration, in the region of L≥L1, a moving speed of moving the discharge valve 32 in a valve opening direction decreases to increase injection start delay time as compared with a conventional technique and a moving speed of moving the discharge valve 32 in the valve closing direction increases to reduce injection end delay time as compared with the conventional technique. It is, therefore, possible to reduce a substantial minimum injection quantity. Furthermore, in a region of L<L1, the spring 59 substantially does not act on the discharge valve 32, so tha |
