Fuel system
AssigneeROLLS-ROYCE plc
InventorPeter Swann
Life of this patent
Estimating the term…
Abstract
A fuel system (12) comprising a vapor trail detection sensor (20) configured to generate a first signal (28) which indicates the optical depth of a vapor trail (35). A control unit (40) is provided responsive to the first signal (28) and configured to generate a second signal (80) in dependence upon the first signal (28). The second signal (80) defines a percentage of at least one of a first fuel composition and second fuel composition required to produce a resultant fuel composition. At least one regulator (42) is provided configured to receive and be responsive to the second signal (80) and regulate the percentage of first and second fuel composition required to produce the resultant fuel composition.
Claims18
A fuel system comprising:
- a vapor trail detection sensor configured to generate a first signal which indicates an optical depth of a vapor trail;
- a control unit responsive to the first signal and configured to generate a second signal in dependence upon the first signal which defines a percentage of at least one of a first fuel composition and a second fuel composition required to produce a resultant fuel composition;
- and
- at least one regulator configured to receive and be responsive to the second signal and regulate the percentage of the at least one of the first fuel composition and the second fuel composition required to produce the resultant fuel composition that controls the optical depth of the vapor trail,
- wherein the control unit comprises a blending ratio calculator configured to calculate the required resultant fuel composition as a function of desired soot emission index determined by a soot requirement generator which communicates a value of soot emission index to the blending ratio calculator.
Dependencies are inferred from the claim text.