Ut-battelle, Inc.

The United States of America As Represented by the Department of Energy

Ronald Lee Graves

Gregory Richard Hanson

Timothy S Bigelow

John M Storey

Richard J Raridon

Jeffrey S Armfield

Shean P Huff

James E Parks, Ii

Samuel Arthur Lewis, Sr

John H Whealton

John Whealton

Michael D Kass

Charles Scott Sluder

John Morse Elliot Storey

John Foster Thomas

Brian H West

A method and system controls engine-out exhaust species of a combustion engine having a plurality of cylinders. The method typically includes various combinations of steps such as controlling combustion parameters in individual cylinders, grouping the individual cylinders into a lean set and a rich set of one or more cylinders, combusting the lean set in a lean combustion parameter condition having a lean air:fuel equivalence ratio, combusting the rich set in a rich combustion parameter condition having a rich air:fuel equivalence ratio, and adjusting the lean set and the rich set of one or more cylinders to generate net-lean combustion. The exhaust species may have elevated concentrations of hydrogen and oxygen.

Advanced engine management of individual cylinders for control of exhaust species

A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NOemissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel (and other lean-burn) engines to meet new, lower emission standards without having to carry separate fuel and reductant tanks.

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A method for non-thermal plasma aftertreatment of exhaust gases the method comprising the steps of providing short risetime, high frequency, high power bursts of low-duty factor microwaves sufficient to generate a plasma discharge and passing a gas to be treated through the discharge so as to cause dissociative reduction of the exhaust gases and enhanced catalyst reactivity through application of the pulsed microwave fields directly to the catalyst material sufficient to cause a polarizability catastrophe and enhanced heating of the metal crystallite particles of the catalyst, and in the presence or absence of the plasma. The invention also includes a reactor for aftertreatment of exhaust gases.

Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity

A method for non-thermal plasma aftertreatment of exhaust gases the method comprising the steps of providing short risetime (about 40 ps), high frequency (about 5G hz), high power bursts of low-duty factor microwaves sufficient to generate a dielectric barrier discharge and passing a gas to treated through the discharge so as to cause dissociative reduction of the exhaust gases. The invention also includes a reactor for generating the non-thermal plasma.

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Knoxville, TN, United States of America

Ronald Lee Graves