High-pressure fuel pump and method for producing same

A high-pressure fuel pump comprising:

• a suction joint that sucks fuel;
• a pump body formed with a pressurizing chamber that pressurizes the fuel sucked from the suction joint;
• a discharge joint that discharges the fuel pressurized in the pressurizing chamber;
• and
• an electromagnetic suction valve mechanism that is disposed in a suction valve hole, wherein
• the pump body is formed such that at least a part of a side surface portion is a cylindrical portion, and the pump body includes a scraped part,
• a first scraped region of the side surface portion of the pump body being located opposite to a second scraped region and perpendicular to an axial direction of the electromagnetic suction valve mechanism in a horizontal sectional view of the pump body as viewed from above,
• the suction valve hole being formed in the second scraped region of the side surface portion of the pump body, the second scraped region being located radially inward of an outermost peripheral surface of the cylindrical portion in a horizontal sectional view of the pump body as viewed from above, and
• the electromagnetic suction valve mechanism is fitted in the suction valve hole and welded to the pump body at a welded portion, which is formed on an outer surface of the second scraped region of the pump body.

A method of producing a high-pressure fuel pump comprising:

• forming a suction joint that sucks fuel;
• forming a pump body having a pressurizing chamber that pressurizes the fuel sucked from the suction joint;
• and
• forming a discharge joint that is disposed in a discharge joint hole, the discharge joint discharging the fuel pressurized in the pressurizing chamber, wherein
• the pump body is formed such that at least a part of a side surface portion is a cylindrical portion,
• the discharge joint hole being formed in a first scraped region of the side surface portion of the pump body, the first scraped region being located radially sectional view of the pump body as viewed from above,
• a second scraped region of the side surface portion of the pump body being located opposite to the first scraped region and perpendicular to an axial direction of the discharge joint in a horizontal sectional view of the pump body as viewed from above, and
• the discharge joint is fitted in the discharge joint hole and welded to the pump body at a welded portion which is formed on an outer surface of the first scraped region of the pump body.