DUTY CYCLE CONTROL FOR METERING VALVE

In one instance, disclosed herein is an engine system including: an engine; a common rail fluidly connected to the engine; a fuel pump connected to the common rail by an inlet line, the fuel pump configured to pump fuel through the inlet line to the common rail, the fuel pump including a metering valve; a fuel tank fluidly connected to the fuel pump; and an engine control module configured to provide a signal having a duty cycle to control operation of the metering valve to pump fuel from the fuel tank to the common rail, where the duty cycle of the signal is based on a first factor, and the first factor is based on a voltage of the signal and a desired average current to be supplied to the metering valve as a result of the signal.