Patent ID: 6764285
Filing Date: 2004-07-20
Classification: F02M,F04B

Abstract:
A hydraulic pump unit (1) for supplying fuel to an internal combustion engine, comprising:a plurality of pump elements (2), disposed in one plane, each of which has one pump cylinder (3) and one pump piston (4) longitudinally displaceably in the pump cylinder (3), and whose longitudinal axes (5) intersect at a common intersection point (6); a cam drive with cams (10), which upon a rotation of the cam drive relative to the pump elements (2) act upon the pump pistons (4) with an actuation motion, the number and the angular spacing of the cams (10) being adapted to the number and angular spacing of the pump elements (2) in such a way that when a certain number of pump pistons (4) are located at top dead center (TDC), the same number of pump pistons (4) are at bottom dead center (BDC); the pump elements (2) of the pump unit (1) receiving the fuel from a metering unit (14); and the pumping courses of the individual pump elements (2) having no overlaps.