METHOD OF OPERATING A HYDROGEN INTERNAL COMBUSTION ENGINE

A method of operating a hydrogen internal combustion engine having at least one cylinder with an intake valve and a direct injector for injecting hydrogen fuel directly into the cylinder. The method comprises performing a plurality of hydrogen fuel injections before an ignition during an engine cycle, wherein a first injection, with a first injection amount mand a first injection time tas first injection parameters, is performed before the intake valve is closed and a second injection, with a second injection amount mand a second injection time tas second injection parameters, is performed by the direct injector after the intake valve has been closed and before an ignition is performed. The method further comprises performing an adjustment process.