Patent ID: 6227227
Filing Date: 2001-05-08
Classification: B67D,F04B,F04C,G01F,G01M,G05D,Y10T

Abstract:
A system for blending two grades of fuel having dissimilar octane ratings into a third intermediate grade of fuel comprising:(a) a first flow control valve within a first fuel flow path, for receiving a low octane rated fuel;(b) a second flow control valve within a second fuel flow path, for receiving a high octane rated fuel;(c) a first pressure transducer within said first fuel flow path proximate to said first flow control valve;(d) a second pressure transducer within said second fuel flow path proximate to said second flow control valve;(e) a manifold area for combining the low and high octane fuels from the first and second fuel flow paths into a single fuel flow path;(f) a meter within the combined single fuel flow path for measuring the amount of fuel to be dispensed;(g) a programmable controller coupled to said first and second pressure transducers and said first and second flow control valves, said controller for monitoring and controlling the operation of said first and second flow control valves; and(h) a third pressure transducer situated within the combined single fuel flow path for ensuring the pressure of the combined flow does not exceed the pressures of said first and second flow control valves,wherein a desired blend of fuel is achieved by proportionally varying said first and second flow control valves.