High-pressure fuel pump

A high-pressure fuel pump comprising:

• a fuel chamber that is configured to draw in fuel after the fuel is pumped from a fuel tank by a feed pump;
• a pressurizing chamber that is configured such that the fuel flows from the fuel chamber into the pressurizing chamber;
• a cylinder that defines a section of the pressurizing chamber;
• a plunger that reciprocates in the cylinder and is configured to change the volume of the pressurizing chamber by reciprocating, thereby pressurizing the fuel in the pressurizing chamber and discharging the fuel from the pressurizing chamber;
• and
• a control valve, wherein
• the control valve includes
• a valve seat having a valve hole that allows the fuel chamber and the pressurizing chamber to be continuous with each other,
• a valve member that is configured to become seated on the valve seat to block the valve hole when moving from the pressurizing chamber toward the fuel chamber,
• a movable portion that has a needle configured to project from the valve hole toward the pressurizing chamber to separate the valve member from the valve seat,
• a valve opening spring that urges the movable portion in a direction of projecting the needle from the valve hole,
• a coil that is configured to generate a magnetic flux that attracts the movable portion against the urging force of the valve opening spring, thereby causing the valve member to contact the valve seat, and
• a projecting-side stopper that is configured to contact the movable portion and thus restrict movement of the movable portion in the direction of projecting the needle from the valve hole, thereby limiting a projecting length of the needle from the valve hole,
• when the control valve is in an open-valve mode, the movable portion contacts the projecting-side stopper and the valve member is separate from the valve seat, and
• a size of a clearance formed between the valve member and the valve seat when the control valve is in the open-valve mode is set such that the clearance functions as a passage restriction for causing pressure loss in the fuel flowing from the pressurizing chamber to the fuel chamber.