Patent ID: 8371267

Claim:
A high-pressure fuel pump for a fuel injection system of an internal combustion engine, the pump comprising a pump housing, a drive shaft supported in the pump housing by a first bearing and a second bearing, at least one pump element disposed radially relative to the drive shaft, a fuel feed line receiving fuel from a prefeed pump and leading to the pump housing, a fuel return line draining off from the pump housing to the at least one pump element, a metering unit for regulating the pump capacity of the at least one pump element, a pressure regulating valve disposed in the fuel return line, the metering unit being disposed between the pressure regulating valve and the at least one pump element in the fuel return line, the first bearing being lubricated by fuel under pressure and being in hydraulic communication with both the fuel feed line, via the pump housing, and a return line returning fuel to a fuel tank, and a first flow limiting device connected in series with the first bearing.