Gary R Rice

US Patent:

6415602, Jul 9, 2002

Filed:

Oct 16, 2000

Appl. No.:

09/688663

Inventors:

Joseph A. Patchett - Basking Ridge NJ
Rudolfus Petrus Verbeek - Naaldwijk, NL
Karl Richard Grimston - Upper Stensham, GB
Gary Wayne Rice - Scotch Plains NJ
John Lawrence Calabrese - Summit NJ
Mathijs Van Genderen - Delft, NL

Assignee:

Engelhard Corporation - Iselin NJ
TNO Automotive - Delft

International Classification:

F01N 300

US Classification:

60286, 60274, 60276, 60285, 60295, 60303

Abstract:

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time constant in turn correlated to the reductant/NOx storage capacity of the reducing catalyst at its current temperature to account for changes in the SCR system attributed to NOx transient emissions. Catalyst temperature is filtered using a variable catalyst time constant corresponding to current space velocity of the exhaust gas to account for changes in the catalyst temperature attributed to NOx transient emissions. The reductant is metered on the basis of the filtered, corrected NOx concentration applied at a NSR ratio based, in turn, on the filtered, corrected reducing catalyst temperature.

US Patent:

6581374, Jun 24, 2003

Filed:

Apr 26, 2002

Appl. No.:

10/133769

Inventors:

Joseph A. Patchett - Basking Ridge NJ
Rudolfus Petrus Verbeek - Naaldwijk, NL
Karl Richard Grimston - Upper Stensham, GB
Gary Wayne Rice - Scotch Plains NJ
John Lawrence Calabrese - Summit NJ
Mathijs Van Genderen - Delft, NL

Assignee:

Engelhard Corporation - Iselin NJ
TNO Automotive - Delft

International Classification:

F01N 300

US Classification:

60286, 60274, 60276, 60295, 60303

Abstract:

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time constant in turn correlated to the reductant/NOx storage capacity of the reducing catalyst at its current temperature to account for changes in the SCR system attributed to NOx transient emissions. Catalyst temperature is filtered using a variable catalyst time constant corresponding to current space velocity of the exhaust gas to account for changes in the catalyst temperature attributed to NOx transient emissions. The reductant is metered on the basis of the filtered, corrected NOx concentration applied at a NSR ratio based, in turn, on the filtered, corrected reducing catalyst temperature.

US Patent:

6662553, Dec 16, 2003

Filed:

Apr 26, 2002

Appl. No.:

10/133716

Inventors:

Joseph A. Patchett - Basking Ridge NJ
Rudolfus Petrus Verbeek - BK Naaldwijk, NL
Karl Richard Grimston - Upper Stensham, GB
Gary Wayne Rice - Scotch Plains NJ
John Lawrence Calabrese - Summit NJ
Mathijs Van Genderen - Delft, NL

Assignee:

Engelhard Corporation - Iselin NJ

International Classification:

F01N 300

US Classification:

60286, 60274, 60276, 60295, 60303, 701104

Abstract:

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time constant in turn correlated to the reductant/NOx storage capacity of the reducing catalyst at its current temperature to account for changes in the SCR system attributed to NOx transient emissions. Catalyst temperature is filtered using a variable catalyst time constant corresponding to current space velocity of the exhaust gas to account for changes in the catalyst temperature attributed to NOx transient emissions. The reductant is metered on the basis of the filtered, corrected NOx concentration applied at a NSR ratio based, in turn, on the filtered, corrected reducing catalyst temperature.

US Patent:

7150145, Dec 19, 2006

Filed:

Dec 17, 2003

Appl. No.:

10/740119

Inventors:

Joseph A. Patchett - Basking Ridge NJ, US
Rudolfus Petrus Verbeek - Naaldwijk, NL
Karl Richard Grimston - Upper Stensham, GB
Gary Wayne Rice - Scotch Plains NJ, US
John Lawrence Calabrese - Summit NJ, US
Mathus Van Genderen - Delft, NL

Assignee:

Engelhard Corporation - Iselin NJ

International Classification:

F01N 3/00

US Classification:

60286, 60274, 60276, 60285, 60295, 60303, 701112

Abstract:

A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a variable NOx time constant in turn correlated to the reductant/NOx storage capacity of the reducing catalyst at its current temperature to account for changes in the SCR system attributed to NOx transient emissions. Catalyst temperature is filtered using a variable catalyst time constant corresponding to current space velocity of the exhaust gas to account for changes in the catalyst temperature attributed to NOx transient emissions. The reductant is metered on the basis of the filtered, corrected NOx concentration applied at a NSR ratio based, in turn, on the filtered, corrected reducing catalyst temperature.

US Patent:

47882220, Nov 29, 1988

Filed:

Apr 15, 1987

Appl. No.:

7/038637

Inventors:

Gary W. Rice - Scotch Plains NJ
Rocco A. Fiato - Basking Ridge NJ
Stuart L. Soled - Pittstown NJ

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

C07C 104

US Classification:

518700

Abstract:

This invention relates to a promoted finely divided or supported iron carbide-based catalyst which is produced by a gas phase pyrolytic decomposition reaction driven by a laser and the use of such a catalyst to produce various heavier hydrocarbons from CO and H. sub. 2.

US Patent:

53405161, Aug 23, 1994

Filed:

Jul 16, 1993

Appl. No.:

8/093104

Inventors:

Bulent O. Yavuz - Plainfield NJ
Matthew P. Larkin - Phillipsburg NJ
Gary W. Rice - Scotch Plains NJ
Kenneth E. Voss - Somerville NJ

Assignee:

Engelhard Corporation - Iselin NJ

International Classification:

B32B 312
C04B 3510

US Classification:

264 63

Abstract:

Particles of an interconnected three-dimensional network of bar-like topaz crystals are used as a reactant (with added silicon dioxide, or a mixture with added silicon dioxide and hydrated aluminum fluoride or added silicon dioxide, hydrated aluminum fluoride and alumina) to form mullite whisker honeycomb articles suitable as catalyst supports.

US Patent:

45487987, Oct 22, 1985

Filed:

Apr 16, 1984

Appl. No.:

6/601079

Inventors:

Gary W. Rice - Whitehouse Station NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C01B 3318
C01B 3510
C01F 1700
C01G 23047

US Classification:

423263

Abstract:

The present invention relates to a method for the production of refractory oxide powders by pyrolyzing with laser energy a metal- and oxygen-containing organic chemical species characterized by the following properties: (a) some or all of the organic fragments (ligands) are bound to the metal by one or more metal-oxygen bonds, (b) the chemical species is able to absorb laser energy, preferably from a CO. sub. 2 laser, in a vibrational mode, (c) the chemical species can be obtained in a gas state, at a temperature below the decomposition temperature.

US Patent:

46877533, Aug 18, 1987

Filed:

Oct 25, 1985

Appl. No.:

6/791509

Inventors:

Rocco A. Fiato - Scotch Plains NJ
Gary W. Rice - Whitehouse Station NJ
Sabato Miseo - Pittstown NJ
Stuart L. Soled - Pittstown NJ

Assignee:

Exxon Research and Engineering Company - Florham Park NJ

International Classification:

B01J 3734
B01J 2722
B01J 1912
C07C 104

US Classification:

502 5

Abstract:

This invention relates to a finely divided iron carbide-first row transition metal-based catalyst which is produced by a gas phase pyrolytic decomposition reaction driven by a laser. The catalysts may be used to produce various hydrocarbons, including olefins, from CO. sub. 2 and H. sub. 2.