Plunger electric fuel pump

A plunger electric fuel pump comprising:

• a cylinder;
• a plunger configured to reciprocate inside the cylinder;
• a pump body including a compression chamber that is defined by the cylinder and the plunger such that fuel in the compression chamber is pressurized by moving the plunger inside the cylinder;
• a movable element to which the plunger is connected;
• a fixed core provided so as to face the movable element;
• a rotational core including a permanent magnet configured to move the movable element in a direction toward the pump body by applying a magnetic force to the movable element;
• an electric motor configured to rotate the rotational core;
• and
• a spring configured to urge the movable element in a direction away from the pump body, wherein
• the rotational core and the fixed core are provided with a switching portion configured to switch between a first state and a second state when a rotational phase of the rotational core is changed, the first state being a state where the magnetic force of the permanent magnet is not applied to the movable element, and the second state being a state where the magnetic force of the permanent magnet is applied to the movable element.