Pressure device to reduce ticking noise during engine idling

A method for operating a high-pressure fuel pump, comprising:

• during an intake stroke of the high-pressure pump, deactivating a digital inlet valve to an open position, allowing fuel to flow into a compression chamber of the high-pressure fuel pump;
• during a first delivery stroke of the pump when in an idling condition, maintaining the digital inlet valve in the open position, where fuel compressed by the pump compresses a flexible accumulator located in a pressure device upstream of the digital inlet valve, the pressure device including two check valves with opposite orientations;
• and
• during a second delivery stroke of the pump when not in the idling condition, activating the digital inlet valve to a closed position to trap fuel inside the compression chamber of the pump, not compressing the accumulator by fuel.