Patent ID: 7201128

Claim:
A fuel supply system ( 1 ) for an internal combustion engine with direct fuel injection comprising a fuel supply pump ( 4 ) and, downstream thereof, a high pressure fuel pump ( 6 ) for supplying fuel from a fuel tank ( 2 ) to a plurality of fuel injectors ( 13 ) of the internal combustion engine, and parallel to the high pressure pump ( 6 ) a hydraulic transmission ( 9 ) for providing, in the start up phase of the internal combustion engine, a fuel pressure to the fuel injectors sufficient for engine start up by the fuel supply pump ( 4 ), said fuel supply pump ( 4 ) being connected at its inlet side to a fuel tank ( 2 ) via an intake line ( 3 a ) and at its outlet side via a connecting line ( 3 b ) to the hydraulic transmission ( 9 ) and via a branch line ( 5 a ) to the high pressure pump ( 6 ), said connecting line ( 3 b ) between the fuel supply pump ( 4 ) and the hydraulic transmission ( 9 ) including, downstream of the connection of the branch line ( 5 a ), a first control valve ( 8 ).