High-pressure piston pump for fuel injecting mechanism of internal-combustion engine of motor vehicle, has pistons guided to shaft, where pistons are set at angle of sixty degrees to each other, and cam track formed as triple cam

摘要

The pump (1) has pump pistons (6) approximately radially and adjustably guided to a drive shaft (2), where the pump pistons are supported on a cam track (5) of the drive shaft over an idler roller (10). The roller is rotatably supported in a roller shoe (9). The pump pistons are set at an angle of 60 degrees to each other with respect to the drive shaft, and the cam track is formed as a triple cam. The pump pistons are arranged in a same radial plane of the drive shaft. A common attaching device (19) controls fluid supply in pump chambers (17) that are defined by a front side of the pistons.