Internal combustion engine

A system, comprising:

• a controller configured to control a pilot control valve and a pressure relief valve fluidly connected to a bypass line along a fuel delivery line of an internal combustion engine, wherein the bypass line is fluidly connected to the fuel delivery line upstream from a differential pressure control valve configured to control a pressure in the fuel delivery line, wherein the differential pressure control valve is configured to open or close based on a pressure difference between the fuel delivery line and a reference volume having a reference pressure, wherein the controller is configured to control the pilot control valve to control the reference pressure in the reference volume, wherein the controller is configured to open the pressure relief valve to cause a pressure relief in the reference volume and a decrease in the reference pressure in response to a drop in a power to be performed by the internal combustion engine.

A method, comprising:

• controlling, via a controller, a pilot control valve and a pressure relief valve fluidly connected to a bypass line along a fuel delivery line of an internal combustion engine, wherein the bypass line is fluidly connected to the fuel delivery line upstream from a differential pressure control valve configured to control a pressure in the fuel delivery line, wherein the differential pressure control valve is configured to open or close based on a pressure difference between the fuel delivery line and a reference volume having a reference pressure, wherein controlling further comprises controlling the pilot control valve to control the reference pressure in the reference volume, wherein controlling further comprises controlling to open the pressure relief valve to cause a pressure relief in the reference volume and a decrease in the reference pressure in response to a drop in a power to be performed by the internal combustion engine.