Patent ID: 8894724

Claim:
A method for making a fuel composition having reduced emissions of one or more of CO, NOx, and hydrocarbons upon combustion, comprising: identifying two or more predetermined properties of the fuel composition for measurement and control; charging one or more hydrocarbon feedstock and one or more additive into a blending tank to make a fuel composition mixture, each of the one or more hydrocarbon feedstock and one or more additive feed having a first charge rate; determining amounts of each of the one or more hydrocarbon feedstock and the one or more additive charged into the blending tank to make the fuel composition mixture; determining two or more current properties of the fuel composition mixture in the blending tank, the two or more current properties of the fuel composition mixture corresponding to the two or more predetermined properties of the fuel composition; comparing the predetermined properties of the fuel composition with the current properties of the fuel composition mixture using a processor coupled to a memory, the memory comprising historical information relating to amounts and identities of fuel composition components and corresponding fuel composition properties; and adjusting the charge rate of at least one of the one or more hydrocarbon feedstock and the one or more additive to a second charge rate into the blending tank in response to the amounts of each of the one or more hydrocarbon feedstock and the one or more additive charged into the blending tank and comparing the predetermined properties and the current properties to provide the fuel composition having reduced emissions of one or more of CO, NOx, and hydrocarbons upon combustion, wherein adjusting the charge rate is performed using feedback control and the processor, the processor operative to determine adjustments to the charge rate of at least one of the one or more hydrocarbon feedstock and the one or more additive into the blending tank based upon the current properties of the fuel composition mixture and the historical information relating to amounts and identities of fuel composition components and corresponding fuel composition properties.