Fuel injection valve

A slurry fuel injector valve, comprising:

• a fuel outlet valve through which slurry fuel is able to exit the slurry fuel injector valve towards a combustion chamber of an engine, the fuel outlet valve comprising a needle valve having a bore, a needle fuel chamber, and a valve needle that is movable in the bore to protrude from within the bore into the needle fuel chamber to a variable extent;
• a pump cavity;
• a pump element that divides the pump cavity into a pump chamber and an actuation chamber;
• a fuel conduit through which slurry fuel is flowable from the pump chamber to the fuel outlet valve;
• and
• an actuation fluid conduit through which actuation fluid is flowable from the actuation chamber to the fuel outlet valve;
• wherein the actuation fluid conduit opens into the bore at an actuation fluid conduit outlet, whereby actuation fluid is expellable from the actuation fluid conduit and into contact with one or both of the valve needle and the bore so that the actuation fluid is driven between the valve needle and the bore into the needle fuel chamber.