Ronald Stephen Graves

Author:

Ronald S. Graves

ISBN #:

0803114206

Author:

Ronald S. Graves

ISBN #:

0803124090

US Patent:

6422002, Jul 23, 2002

Filed:

Jul 14, 2000

Appl. No.:

09/616872

Inventors:

John H. Whealton - Oak Ridge TN
Gregory R. Hanson - Clinton TN
John M. Storey - Oak Ridge TN
Richard J. Raridon - Oak Ridge TN
Jeffrey S. Armfield - Ypsilanti MI
Timothy S. Bigelow - Knoxville TN
Ronald L. Graves - Knoxville TN

Assignee:

The United States of America as represented by the United States Department of Energy - Washington DC

International Classification:

F01N 300

US Classification:

60275, 2041573, 422186

Abstract:

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.

US Patent:

7257945, Aug 21, 2007

Filed:

Feb 10, 2003

Appl. No.:

10/361432

Inventors:

Michael Delos Kass - Oak Ridge TN, US
Ronald Lee Graves - Knoxville TN, US
John Morse Elliot Storey - Oak Ridge TN, US
Charles Scott Sluder - Knoxville TN, US
John Foster Thomas - Powell TN, US

Assignee:

U T Battelle, LLC - Oak Ridge TN

International Classification:

F01N 3/00

US Classification:

60286, 60274, 60301, 60303

Abstract:

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.

US Patent:

7469693, Dec 30, 2008

Filed:

Mar 27, 2007

Appl. No.:

11/691539

Inventors:

Ronald L. Graves - Knoxville TN, US
Brian H. West - Knoxville TN, US
Shean P. Huff - Knoxville TN, US

Assignee:

UT-Battelle, LLC - Oak Ridge TN

International Classification:

F02D 41/04
G06F 17/00

US Classification:

123673, 123679, 701109

Abstract:

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.

US Patent:

20080041037, Feb 21, 2008

Filed:

Jul 27, 2007

Appl. No.:

11/829251

Inventors:

Michael Kass - Oak Ridge TN, US
Ronald Graves - Knoxville TN, US
John Storey - Oak Ridge TN, US
Samuel Lewis - Andersonville TN, US
Charles Sluder - Knoxville TN, US
John Thomas - Powell TN, US

Assignee:

UT-BATTELLE, LLC - Oak Ridge TN

International Classification:

F01N 3/20
F01N 3/00
F01N 3/10

US Classification:

060286000, 060274000, 060301000

Abstract:

A method to reduce NO, emissions from diesel fuel alcohol microemulsions (E-diesel) is taught. Ethanol is stripped from the microemulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel engines to meet new, lower emission standards without having to carry separate fuel and reductant tanks.

US Patent:

61905070, Feb 20, 2001

Filed:

Jul 23, 1999

Appl. No.:

9/359746

Inventors:

John H. Whealton - Oak Ridge TN
Gregory R. Hanson - Clinton TN
John M. Storey - Oak Ridge TN
Richard J. Raridon - Oak Ridge TN
Jeffrey S. Armfield - Upsilanti MI
Timothy S. Bigelow - Knoxville TN
Ronald L. Graves - Knoxville TN

Assignee:

The United States of America as represented by the Department of Energy - Washington DC

International Classification:

B01J 1908

US Classification:

2041573

Abstract:

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.