Patent ID: 7658180
Filing Date: 2010-02-09
Classification: F02M,F04D

Abstract:
1. A fuel pump comprising: a driven impeller facing a casing part, with rings of guide vanes arranged in the impeller concentrically enclosing one another and defining blade chambers; partially annular fuel feed ducts facing the rings of guide vanes in the casing part; outlet ducts connected to the partially annular ducts, the rings of the blade chambers and the partially annular ducts forming a radial inner delivery chamber and a radial outer delivery chamber; and a connecting duct connecting the radial outer delivery chamber to the radially radial inner delivery chamber configured so the fuel flows from the radial outer delivery chamber to the radial inner delivery chamber, connections of the connecting duct connect to the radial inner and the radial outer delivery chambers, the connections being laid out so that at a rated speed of the impeller a same pressure prevails on both connections.