Abstract: The invention relates to a high-pressure connection device (50) for a high-pressure fuel pump (10), having the following: —an outlet device (18) for discharging fuel (14) from the high-pressure fuel pump (10); —a connection device (22) for connecting the outlet device (18) to elements arranged downstream of the outlet device; —a welding seam (30) for connecting the outlet device (18) and the connection device (22); and —a pretensioning device (52) for exerting a pretension force (Fv) onto the welding seam (30) in the direction of the outlet device (18). The invention further relates to a high-pressure fuel pump (10) which has such a high-pressure connection device (50) and to a method for producing such a high-pressure connection device (50).

Abstract: The present disclosure relates to fuel delivery systems for a motor vehicle. Some embodiments include a housing with a wall and a connector opening, a high-pressure connector including a wall circumferentially bordering a recess extending along a longitudinal central axis of the high-pressure connector, a radial indentation formed at the inner side in the wall in the housing connector region adjacent to the transition region, and an axial indentation formed at the outer side in the wall in the transition region adjacent to the intermediate region. The high-pressure connector may have a housing connector region, an intermediate region, and a transition region. An outer diameter of the high-pressure connector is larger in the housing connector region than in the intermediate region and the inner diameter is larger in the housing connector region than in the intermediate region. The wall of the housing delimits a recess around the connector opening.

Abstract: Some embodiments include an assembly comprising: a housing; a flange having a first and second flange side; and a collar extending into a connector opening of the flange. The flange includes a first assembly opening remote from the connector opening. The first assembly opening has a first peripheral portion contiguous with a first flange surface region and a second peripheral portion contiguous to a second flange surface region and closer to the connector opening than the first peripheral portion. A periphery of the connector opening on the second flange side and/or a surface region of the flange adjacent to the connector opening defines a geometric reference plane. The first flange surface region is more remote in comparison to the second flange surface region in a direction perpendicular to the reference plane.

Abstract: Various embodiments include an assembly comprising: a housing; a flange having a first and second flange side; a collar extending into a connector opening of the flange; and a depression running around the assembly opening on the first flange side. The flange has a first assembly opening spaced from the connector opening. The depression includes an inner periphery running laterally along an entire circumference of the first flange side spaced from the assembly opening.

Abstract: The invention relates to a high-pressure connection device (50) for a high-pressure fuel pump (10), having the following:—an outlet device (18) for discharging fuel (14) from the high-pressure fuel pump (10);—a connection device (22) for connecting the outlet device (18) to elements arranged downstream of the outlet device;—a welding seam (30) for connecting the outlet device (18) and the connection device (22); and—a pretensioning device (52) for exerting a pretension force (Fv) onto the welding seam (30) in the direction of the outlet device (18). The invention further relates to a high-pressure fuel pump (10) which has such a high-pressure connection device (50) and to a method for producing such a high-pressure connection device (50).

Abstract: The present disclosure relates to fuel delivery systems for a motor vehicle. Some embodiments include a housing with a wall and a connector opening, a high-pressure connector including a wall circumferentially bordering a recess extending along a longitudinal central axis of the high-pressure connector, a radial indentation formed at the inner side in the wall in the housing connector region adjacent to the transition region, and an axial indentation formed at the outer side in the wall in the transition region adjacent to the intermediate region. The high-pressure connector may have a housing connector region, an intermediate region, and a transition region. An outer diameter of the high-pressure connector is larger in the housing connector region than in the intermediate region and the inner diameter is larger in the housing connector region than in the intermediate region. The wall of the housing delimits a recess around the connector opening.