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|1. (WO2018221077) ELECTROMAGNETIC VALVE, ELECTROMAGNETIC INLET VALVE MECHANISM, AND HIGH-PRESSURE FUEL PUMP|
|Applicants:||HITACHI AUTOMOTIVE SYSTEMS, LTD.
|Title:||ELECTROMAGNETIC VALVE, ELECTROMAGNETIC INLET VALVE MECHANISM, AND HIGH-PRESSURE FUEL PUMP|
Provided are an electromagnetic valve, an electromagnetic inlet valve mechanism, and a high-pressure fuel pump that suppress movement of an inlet valve in the radial direction and improve flow rate controllability even when pressure becomes high or flow rate becomes high. This valve mechanism is provided with: a spring member that includes an end coil section and a movable section and that is secured by a spring support section on the side opposite the end coil section; and a valve body that is biased by the end coil section-side of the spring member. The valve body has formed therein a protrusion section that protrudes toward the spring support section-side and that is located on the radially inner side of the spring member. In a cross-section that passes through the radial center of the spring member and is cut in the spring member axial direction, a tip section of the protrusion section is positioned on the spring support section-side with respect to a coil cross-section on both sides of at least the first turn of the movable section that is adjacent to the end coil section.