Injector arrangement for diesel engines using slurry or emulsion fuels

A fuel injection arrangement for a diesel type engine configured to use carbonaceous aqueous slurry fuels, the fuel injection arrangement including:

• an injector nozzle for injecting fuel into a combustion chamber;
• a pump chamber housing a fuel pumping element for generating a pressurised fuel flow to the injector nozzle along an injection path between the pumping element and the injector nozzle;
• and
• a check valve connected to a fuel supply for regulating and supplying fuel to the injection path via a check valve outlet,
• wherein a region immediately downstream of the check valve outlet defines an outlet region, wherein the outlet region is located within the injection path such that the outlet region is exposed to the pressurised fuel flow to facilitate flushing of the outlet region during fuel flow between the pumping element and the injector nozzle, and wherein a downstream surface of the check valve is exposed to the fuel flow between the pumping element and the injector nozzle.