Patent ID: 8312864

Claim:
A method for the volume flow control in an injection system of an injection apparatus of an internal combustion engine, comprising: pumping fuel from a fuel tank to a high pressure storage unit using a low pressure pump and a high pressure pump, measuring a pressure value present at an upstream inlet of a volume flow control unit arranged downstream of the low pressure pump and upstream of the high pressure pump, such that the high pressure pump is arranged between the volume flow control unit and the high pressure storage unit, controlling the volume flow control unit to control a volume flow of fuel to a recirculating pipe leading back to the fuel tank, wherein the volume flow control unit comprises a ball actuated by an actuator to control the volume flow through to the recirculating pipe, wherein pressure acting on the ball from fuel upstream of the volume flow control unit influences the volume flow through the volume flow control unit, and wherein controlling the volume flow control unit comprises applying an electric current to control the actuator based at least on the measured pressure value present at the inlet of the volume flow control unit in a manner that accounts for the influence on the volume flow caused by the pressure acting on the ball from fuel upstream of the volume flow control unit.