Radial piston pump for fuel high pressure production in internal combustion engine fuel injection system, particularly in common rail system, has drive shaft located in pump housing and is eccentrically formed

摘要

The drive shaft (2) has ridge-type raised formations in a peripheral direction. Preferably, several pistons (5) are arranged in relation to the drive shaft radially in an element bore (6). Through rotation of the drive shaft in a radial direction the pistons are movable backwards and forwards, in order to suck fuel into a cylinder space (10) via a suction channel (8) in which a suction valve (9) is arranged. The cylinder space is limited by the piston in the element bore and is connected with a high pressure channel (11) in which a high pressure valve (12) is arranged. The element bore is formed in an element head as a blind hole, from which the suction channel and the high pressure channel emerge.