| 摘要 |
A radial piston pump has a pump housing ( 1 ) and at least one pump unit ( 2 ) with a pump piston ( 3 ) and a cylinder ( 4 ) wherein the pump piston ( 3 ) can be mounted such that it can be moved backwards and forth, wherein the pump unit ( 2 ) can be driven by means of a camshaft ( 5 ) mounted in the pump housing ( 1 ); and a roller plunger ( 6 ) is arranged between the camshaft ( 5 ) and the pump unit ( 2 ), consisting of a plunger ( 7 ) and a roller ( 8 ), wherein the plunger has a guide area ( 9 ) which is used to guide it a first slot-shaped guide groove ( 10 ) of the cylinder insert ( 4 ). The roller plunger ( 6 ) is thus reliably prevented from rotating inside the cylinder insert ( 4 ). The radial piston pumps are particularly suited for high rotational speeds occurring in high-pressure fuel pumps.
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