Common rail injection

Common-rail injection holds fuel at high, constant pressure (around 1000 to 1500 bar, higher on the newest engines) in a shared accumulator, so each cylinder’s injection timing, pressure, and profile are set electronically and decoupled from engine speed. This keeps atomization good at low load, cuts smoke and fuel during slow steaming, and enables multiple injections. It is the basis of the electronically controlled MAN-ES ME and WinGD-X (formerly Sulzer RT-flex) two-strokes.