HIGH-PRESSURE FUEL PUMP

A high-pressure fuel pump includes a fuel chamber, a pressurizing chamber, a cylinder, a plunger, and a control valve. The control valve includes a valve seat having a valve hole, a valve member, a movable portion having a needle, a valve opening spring, a coil, and a projecting-side stopper. The needle is configured to project from the valve hole and thus separates the valve member from the valveseat. 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. The size of the clearance formedbetween 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. 本发明涉及高压燃料泵，具有燃料室、加压室、缸体、柱塞和控制阀。控制阀具有：具有阀孔的阀座、阀芯、具有针部的可动部、开阀用弹簧、生成吸引可动部的磁通的线圈、以及突出侧止动体，该针部构成为通过从阀孔突出而使阀芯离开阀座。在控制阀为开阀形态时，可动部与突出侧止动体抵接且阀芯离开阀座。在控制阀为开阀形态时形成的阀芯与阀座之间的间隙的尺寸被设定为，