Patent ID: 9169816
Filing Date: 2015-10-27
Classification: F02M,F04B

Abstract:
1. A high-pressure fuel supply pump comprising: a pump housing in which a pressurizing chamber is provided; a piston plunger supported by the pump housing, the piston plunger repetitively performing a reciprocating motion within the pressurizing chamber to suck fluid into the pressurizing chamber, pressurize the fluid therein and discharge the fluid out of the pressurizing chamber; an electromagnetically-driven intake valve unit including an intake valve provided on the side of the pressurizing chamber adjacent to a valve seat provided at a valve housing and a valve biasing spring configured to bias the intake valve against the valve seat; an electromagnetic driving mechanism for controlling an opening or closing for the electromagnetically-driven intake valve unit; and a guide portion guiding the intake valve, the guide portion being arranged on a pressurizing chamber side with respect to the intake valve, wherein