A large two-stroke turbocharged compression-ignited internal combustion crosshead engine comprising: a plurality of cylinders , at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of said two or more electronically controlled fuel valves being connected to an outlet of said at least one pressure booster , each fuel valve being provided with a valve needle that controls the flow of fuel from said inlet to nozzle holes of the nozzle of said fuel valve , the position of said valve needle being controlled by a control signal, an electronic control unit operably connected to said at least one pressure booster and said two or more electronically controlled fuel valves , said electronic control unit being configured to: - determine a start time for a fuel injection event, - determine the duration of said fuel injection event, - activate said at least one pressure booster ahead of the determined start time, - open the two or more electronically controlled fuel valves at the determined start time by controlling the position of said valve needle with said control signal, - close said electronically controlled fuel valves at the end of said duration by controlling the position of said valve needle with said control signal, and - to deactivate said at least one pressure booster at the end of said duration. a plurality of cylinders , at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of said two or more electronically controlled fuel valves being connected to an outlet of said at least one pressure booster , each fuel valve being provided with a valve needle that controls the flow of fuel from said inlet to nozzle holes of the nozzle of said fuel valve , the position of said valve needle being controlled by a control signal, an electronic control unit operably connected to said at least one pressure booster and said two or more electronically controlled fuel valves , said electronic control unit being configured to: - determine a start time for a fuel injection event, - determine the duration of said fuel injection event, - activate said at least one pressure booster ahead of the determined start time, - open the two or more electronically controlled fuel valves at the determined start time by controlling the position of said valve needle with said control signal, - close said electronically controlled fuel valves at the end of said duration by controlling the position of said valve needle with said control signal, and - to deactivate said at least one pressure booster at the end of said duration. - determine a start time for a fuel injection event, - determine the duration of said fuel injection event, - activate said at least one pressure booster ahead of the determined start time, - open the two or more electronically controlled fuel valves at the determined start time by controlling the position of said valve needle with said control signal, - close said electronically controlled fuel valves at the end of said duration by controlling the position of said valve needle with said control signal, and - to deactivate said at least one pressure booster at the end of said duration. <EOS>