High-pressure pump, in particular radial piston pump, with at least one plunger body, a rotatable roller shoe, a roller and an axial contact point for the roller, which is arranged at a distance from the axis of rotation of the roller

摘要

High-pressure pump (1), in particular radial or inline piston pump of fuel injection systems of air-compressing, self-igniting internal combustion engines, comprising at least one pump assembly (13) and a drive shaft (6) having at least one cam (9) associated with the pump assembly (13), the pump assembly (13) has a piston (16), a plunger body (27) and a roller (25) arranged on the cam (9) and wherein the piston (16) by means of the roller (25) of the cam (9) of the drive shaft ( 6) is drivable, wherein at least one axial contact point (42) for the roller (25) is provided, which serves for the axial guidance of the roller (25), wherein the axial abutment point (42) spaced from a rotational axis (44) of the roller ( 25) is arranged, wherein the axial abutment point (42) between the roller (25) and the plunger body (27) is formed, wherein the plunger body (27) has an axial bearing surface (40) for the roller (25) t, at which the axial contact point (42) between the roller (25) and the plunger body (27) is provided, wherein a roller shoe (26) is provided, in which the roller (25) is mounted radially and wherein the roller shoe (26 ) is received by the plunger body (27), characterized in that the axial abutment surface (40) in the direction of the cam (9) is designed inclined towards the roller (25) that the axial abutment point (42) with respect to the axis of rotation (44) of the roller (25) is arranged offset to the cam (9) and that the roller shoe (26) in the plunger body (27) is rotatably mounted to an alignment of the roller (25) with respect to the cam (9) to ensure.