Patent ID: 6224351
Filing Date: 2001-05-01
Classification: F02M,F04B

Abstract:
A radial piston pump for high-pressure fuel delivery in fuel injection systems of internal combustion engines including a common rail injection system, comprising a drive shaft (2) that is supported in a pump housing (1), said drive shaft is embodied as eccentric or has cam-like projections in the circumference direction, a number of pistons (5) that are each disposed in a respective element bore (6) are situated radially in relation to the drive shaft (2), the pistons can be set into a reciprocating motion in the radial direction inside the respective element bore (6) through the rotation of the drive shaft (2) in order to aspirate fuel by way of an intake conduit (8) in which an intake valve (9) is disposed, fuel is aspirated into a cylinder chamber (10) that is defined by the piston (5) in the element bore (6) and is connected to a high-pressure conduit (11) in which a high-pressure valve (12) is disposed, the element bore (6) is disposed together with the intake conduit (8) and the high-pressure conduit (11) in an element head (14), the element bore (6) in the element head (14) is embodied as a blind bore, from which the intake conduit (8) and the high-pressure conduit (11) lead, and the intake conduit (8) and the high-pressure conduit (11) are directly connected to the pump housing.