High-pressure pump

A high-pressure pump comprising:

• a plunger performing a reciprocating movement;
• a housing defining a pressurization chamber and a first fuel passage for introducing a fuel toward the pressurization chamber;
• a cylindrical seat body which has a valve seat;
• a valve which has a seat surface that is integrated in one piece with a disk portion and a flat end surface;
• a stopper which has a surface confronting the valve;
• an electromagnetic drive portion which generates an electromotive force so as to move the valve in a valve-opening-and-closing direction,
• a spring which is disposed between the valve and the stopper so as to bias the valve toward the vale seat, wherein
• the valve is located between the electromagnetic drive portion and the pressurization chamber,
• a second fuel passage is arranged between the valve seat and the pressurization chamber in such a manner as to fluidly connect the seat surface of the valve with the pressurization chamber,
• the valve and the stopper are configured in such a manner that the valve is able to abut on the stopper at a position radially outside of the spring,
• the stopper has a cylindrical portion,
• the stopper is configured to form an accommodation space defined by an inner wall of the cylindrical portion and the valve and configured to be filled with the fuel,
• the second fuel passage is defined radially outside of the cylindrical portion,
• the accommodation space is connected with the second fuel passage through a passage, which extends in a direction perpendicular to the valve-opening-and-closing direction,
• the passage is connected with the second fuel passage at a position radially outside of the valve,
• the valve and the stopper define a contact surface therebetween when being in contact with each other and define a clearance therebetween radially outside of the contact surface, and
• the clearance increases in length in the valve-opening-and-closing direction toward the radially outside.