Fuel injection valve and fuel injection system

A fuel injection valve comprising:

• a coil that is configured to generate a magnetic flux when the coil is energized;
• a stationary core that is configured to form a passage of the magnetic flux and thereby generate a magnetic force;
• and
• a movable structure that includes a first attractive surface and a second attractive surface, which are configured to be attracted toward the stationary core by the magnetic force, wherein the movable structure is configured to be driven to open or close an injection hole, and the injection hole is configured to inject fuel when the movable structure is moved to open the injection hole in response to attraction of the first attractive surface and the second attractive surface toward the stationary core, wherein:
• the first attractive surface and the second attractive surface are located at different locations, respectively, which are different from each other in a moving direction of the movable structure;
• the movable structure includes:
• a movable core that includes the first attractive surface and the second attractive surface;
• and
• an elongated shaft member that has a length, which is measured in the moving direction and is larger than a length of the movable core, which is measured in the moving direction;
• and
• a modulus of longitudinal elasticity of the elongated shaft member is larger than a modulus of longitudinal elasticity of the movable core.