Patent ID: 6176223
Filing Date: 2001-01-23
Classification: F02M,F04B,F16C

Abstract:
A radial piston pump for high-pressure fuel delivery in fuel injection systems of internal combustion engines having a common rail injection system, comprising a drive shaft (4) which is supported in a pump housing (2) and has an eccentrically embodied shaft section (6) upon which a ring (10) is supported in sliding fashion by means of a bearing bush (9), the ring (10) cooperates with a number of pistons (12) disposed radially in relation to the drive shaft (4), each piston in a respective cylinder chamber (18), the eccentric shaft section (6) and the ring (10) are fixed in the axial direction by means of stop faces (24, 25) and a bearing gap (11) is provided between the bearing bush (9) and the eccentric shaft section (6) into which gap lubricant can travel from the inside of the pump housing (2), the hub end faces (20, 21, 37, 38) of the pump housing (2) are embodied as conical so that a wedge-shaped gap is produced which narrows in a direction of the bearing gap (11).