Patent ID: 6872056

Claim:
A radial piston pump ( 20 ) for producing high fuel pressure in a fuel system ( 10 ) of an internal combustion engine in particular in a common rail injection system, the pump comprising a housing ( 48 ) that has at least one cylinder ( 40 a, 40 b, and 40 c ); a drive shaft ( 50 ) supported in the housing ( 48 ) and having at least one cam section ( 54 ), a stroke ring ( 62 ) disposed encompassing the cam section ( 54 ), at least one piston ( 46 a, 46 b, and 46 c ) contained one in each at least one cylinder ( 40 a, 40 b, and 40 c ) and supported against the stroke ring ( 62 ), an adjusting ring ( 60 ) disposed between the cam section ( 54 ) and the stroke ring ( 62 ), an internal opening ( 80 ) of this adjusting ring ( 60 ) being eccentric in relation to its outer contour, adjusting means for rotating the adjusting ring around a central axis ( 81 ) of the internal opening ( 80 ) into a desired angular position in relation to the cam section ( 54 ), said adjusting means comprising an adjusting shaft ( 70 ), which cooperates with the adjusting ring ( 60 ) by means of a gearing ( 72 ), and which is inserted coaxially to a rotation axis ( 56 ) of the drive shaft ( 50 ) within an axial recess formed in the drive shaft ( 50 ).