Charge air receiver

The charge-air receiver, also called the scavenge air receiver, is the plenum that holds cooled compressed air from the turbocharger and distributes it evenly to every cylinder through the scavenge ports. It damps the pressure pulses of individual cylinder charging and provides a steady scavenge pressure, typically 2 to 4 bar absolute on a large two-stroke at full load. The auxiliary blowers discharge into this receiver at low load when the turbocharger alone cannot fill it. The receiver also houses the charge-air cooler, the water mist catcher, and the non-return flaps that seal off the blowers once turbocharger pressure takes over.