HIGH-PRESSURE FUEL SUPPLY PUMP HAVING ELECTROMAGNETICALLY-DRIVEN INTAKE VALVE

It is an object of the present invention to to eliminate a valve holder and accommodate a valve guide in a small space provided between a valve seat and a peripheral surface part of a pressure chamber to thereby bring a pump into less size. In order to achieve the above object, the valve guide SG which guides a stroke of a valve 203 is provided inside the valve seat 214S. Specifically, a valve 203 includes an annular abutting surface 203R that abuts a valve seat 214S formed in a valve housing 214 to shut off a fuel intake passage and a bottomed cylindrical part 203F, 203H provided at an inner peripheral part of the annular abutting surface 203R. The bottomed cylindrical part 203F, 203H is inserted into a fuel introduction hole 214P formed in the valve housing 214 inside the valve seat 214S. A member having a cylindrical surface part which supports a reciprocating motion of the valve 203, is fixed to the valve housing 214, in face-to-face with an inner peripheral part of the bottomed cylindrical part 203F, 203H. Thus, the size of the valve guide SG that protrudes from the surface of the valve seat 214S to the pressure chamber side can be shortened. It is therefore possible to bring an inlet valve mechanism portion into less size and eventually render the pump in a small size.