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AssigneeROLLS-ROYCE plc
InventorRobert A. HICKS
Estimating the term…
A fuel injector comprises a fuel feed arm and a fuel injector head and the fuel injector head has a fuel passage. The fuel feed arm has a fuel supply passage in fluid communication with the fuel passage in the fuel injector head. A first light guide extends through the fuel feed arm and has a distal end arranged to direct light into the fuel passage in the fuel injector head. A light source is arranged to supply light into a proximal end of the first light guide. A second light guide extends through the fuel feed arm and has a distal end arranged to receive transmitted light in the fuel passage in the fuel injector head and a light receiver is arranged to collect light at a proximal end of the second light guide.
A fuel injector comprising a fuel feed arm and a fuel injector head, the fuel injector head having a fuel passage, the fuel feed arm having a fuel supply passage in fluid communication with the fuel passage in the fuel injector head, a first light guide extending through the fuel feed arm and having a distal end arranged to direct light into the fuel passage in the fuel injector head, a second light guide extending through the fuel feed arm and having a distal end arranged to receive light in the fuel passage in the fuel injector head, in operation a proximal end of the first light guide being connectable to a light source arranged to supply light and a proximal end of the second light guide being connectable to a light receiver.
A combustion chamber comprising a fuel injector, the fuel injector comprising a fuel feed arm and a fuel injector head, the fuel injector head having a fuel passage, the fuel feed arm having a fuel supply passage in fluid communication with the fuel passage in the fuel injector head, a first light guide extending through the fuel feed arm and having a distal end arranged to direct light into the fuel passage in the fuel injector head, a second light guide extending through the fuel feed arm and having a distal end arranged to receive light transmitted through the fuel passage in the fuel injector head from the distal end of the first light guide, a light source arranged to supply light to a proximal end of the first light guide and a light receiver arranged to collect light at a proximal end of the second light guide.
A method of detecting coking in a fuel injector, wherein the fuel injector being arranged in a combustion chamber, the fuel injector comprising a fuel feed arm and a fuel injector head, the fuel injector head having a fuel passage, the fuel feed arm having a fuel supply passage in fluid communication with the fuel passage in the fuel injector head, the method comprising directing light into the fuel passage in the fuel injector head, detecting light transmitted through the fuel passage in the fuel injector head and monitoring the light transmitted through the fuel passage in the fuel injector head to detect coking in the fuel injector.
Dependencies are inferred from the claim text.