Patent ID: 6792915
Filing Date: 2004-09-21
Classification: F02M,F04B

Abstract:
A fuel supply apparatus for supplying fuel to an internal combustion engine, said fuel supply apparatus comprisingat least one fuel valve (16) for introducing the fuel into the internal combustion engine; a fuel tank (2); a fuel line (10); a first fuel pump (6) for supplying the fuel from the fuel tank (2) to the fuel line (10); a second fuel pump (12) for supplying the fuel from the fuel line (10) via a pressurized line (14,42,44) to said at least one fuel valve (16) so that the fuel is introduced into the internal combustion engine at least indirectly; a fuel return line (22) connecting the fuel line (10) to the fuel tank (2) for fuel return; a pressure regulator valve (26) arranged in the fuel return line (22); a shut off valve (30) arranged in the fuel return line (22) so as to be hydraulically in series with the pressure regulator valve (28); and a fuel scavenger line (60) for conducting the fuel back to the fuel tank (2) at least partially through the second fuel pump (12) and through a hydraulic resistance means; wherein the fuel scavenger line (60) opens into the fuel return line (22) hydraulically between the shut off valve (30) and the pressure regulator valve (26).