The purpose of the present invention is to prevent a suction valve from closing due to fluid force when an electromagnetic coil is in an unenergized state. This electromagnetic suction valve comprises: a valve part that is in an open state when not energized and opens/closes a fuel introduction opening; and a stopper that has a bottom section that abuts the valve part in an open state in which the valve part has opened the fuel introduction opening, and a side wall section that faces a side circumferential surface of the valve part. The bottom section of the stopper has a plurality of fuel passage holes. In the direction that the bottom section of the stopper and the valve section face each other, the area of a portion in each of the plurality of fuel passage holes that does not overlap the valve part is greater than the area of a portion that overlaps the valve part.

A fuel pump includes an electromagnetic intake valve including a coil winding portion formed by winding an electromagnetic coil around a bobbin and a magnetic circuit configuration portion constituting a magnetic circuit when a current flows through the electromagnetic coil. The magnetic circuit configuration portion includes a yoke disposed so as to surround the coil winding portion, and a predetermined part facing, across a gap, the coil winding portion in a radial direction of the electromagnetic intake valve. The dimension of the gap is set such that the coil winding portion and the predetermined part come into contact with each other first when an impact force directed from an outer side to an inner side in the radial direction of the electromagnetic intake valve is applied to the yoke or the coil winding portion.

An inlet valve assembly of a fluid pump comprises an inlet valve member movable between a closed position and an open position. In the closed position the inlet valve member is arranged to block a pump chamber inlet to prevent fluid from entering or exiting a pump chamber of the fluid pump through the pump chamber inlet. In the open position the inlet valve member is arranged to allow fluid to enter or exit the pump chamber through the pump chamber inlet. The inlet valve assembly further comprises a first biasing means configured to bias the inlet valve member in a first direction, d.sub.1, towards the open position, when the inlet valve member is in the closed position; and a second biasing means configured to reduce the speed of the inlet valve member when the inlet valve member is moving in the first direction, d.sub.1, towards the open position.