Joel M Cizeron

7165393, Jan 23, 2007

Dec 3, 2002

10/309936

Ralph Dalla Betta - Mountain View CA, US
Joel Cizeron - Fremont CA, US

Catalytica Energy Systems, Inc. - Mountain View CA

F01N 3/00

60286, 60274, 60285, 60295, 60297, 60303, 48 61, 48197 R

The present invention provides systems and methods to improve the performance and emission control of internal combustion engines equipped with nitrogen oxides storage-reduction (“NSR”) emission control systems. The system generally includes a NSR catalyst, a fuel processor located upstream of the NSR catalyst, and at least one fuel injection port. The fuel processor converts a fuel into a reducing gas mixture comprising CO and H. The reducing gas mixture is then fed into the NSR catalyst, where it regenerates the NSR adsorbent, reduces the NOto nitrogen, and optionally periodically desulfates the NSR catalyst. The fuel processor generally includes one or more catalysts, which facilitate reactions such as combustion, partial oxidation, and/or reforming and help consume excess oxygen present in an engine exhaust stream. The methods of the present invention provide for NSR catalyst adsorbent regeneration. Control strategies are provided to control the system and methods of the invention.

7181906, Feb 27, 2007

Nov 17, 2003

10/715722

Ralph A. Dalla Betta - Mountain View CA, US
Joel Cizeron - Fremont CA, US
David R. Sheridan - Menlo Park CA, US

Catalytica Energy Systems, Inc. - Mountain View CA

F01N 3/00

60286, 60274, 60295, 60301, 60303, 48197 R, 481987

The invention provides devices and methods for generating Hand CO in an Ocontaining gas stream. The invention also provides devices and methods for removal of NOfrom an Ocontaining gas stream, particularly the oxygen-rich exhaust stream from a lean-burning engine, such as a diesel engine. The invention includes a fuel processor that efficiently converts added hydrocarbon fuel to a reducing mixture of Hand CO. The added fuel may be a portion of the onboard fuel on a vehicle. The Hand CO are incorporated into the exhaust stream and reacted over a selective lean NOcatalyst to convert NOto N. thereby providing an efficient means of NOemission control.

7240483, Jul 10, 2007

Aug 2, 2004

10/910213

Joel M. Cizeron - Sunnyvale CA, US
Ralph A. Dalla Betta - Mountain View CA, US

Eaton Corporation - Cleveland OH

F01N 3/00

60286, 60274, 60295, 60297, 60303, 60309, 60311, 48197 R, 422182, 422183

Described here are systems and methods for treating fuel injected exhaust streams. In general, the systems comprise a fuel injector, a pre-combustor, and a fuel combustor. The methods described herein include methods for regenerating a NOtrap or a DPF, and methods for generating a substantially uniform fuel air mixture at a fuel combustor inlet, or a substantially uniform temperature at a fuel combustor outlet. The methods of regenerating a NOtrap typically comprise the steps of injecting fuel into an exhaust stream, passing the stream through a pre-combustor, operating the pre-combustor to at least partially combust the injected fuel, reacting the fuel and exhaust stream mixture within a fuel combustor to generate a reducing gas mixture, and introducing the reducing gas mixture into a NOtrap, whereby the NOtrap is regenerated. Similar methods for regenerating a diesel particulate filter are also described. Control strategies are also provided.

7533521, May 19, 2009

Jun 9, 2006

11/449986

Ralph A. Dalla Betta - Mountain View CA, US
Joel M. Cizeron - Sunnyvale CA, US

Eaton Corporation - Cleveland OH

F01N 3/00

60286, 60274, 60295, 60297, 60303, 48 61, 48197 R, 123 1 A, 123 3

The present invention provides systems and methods to improve the performance and emission control of internal combustion engines equipped with nitrogen oxides storage-reduction (“NSR”) emission control systems. The system generally includes a NSR catalyst, a fuel processor located upstream of the NSR catalyst, and at least one fuel injection port. The fuel processor converts a fuel into a reducing gas mixture comprising CO and H. The reducing gas mixture is then fed into the NSR catalyst, where it regenerates the NSR adsorbent, reduces the NOto nitrogen, and optionally periodically desulfates the NSR catalyst. The fuel processor generally includes one or more catalysts, which facilitate reactions such as combustion, partial oxidation, and/or reforming and help consume excess oxygen present in an engine exhaust stream. The methods of the present invention provide for NSR catalyst adsorbent regeneration using pulsed fuel flow. Control strategies are also provided.

7610752, Nov 3, 2009

Mar 8, 2007

11/715854

Ralph Albert Dalla Betta - Mountainview CA, US
Joel M. Cizeron - Sunnyvale CA, US
David R. Sheridan - Menlo Park CA, US

Eaton Corporation - Cleveland OH

F01N 3/00

60286, 60274, 60287, 60295, 60301, 60303, 48197 R, 481987

The invention provides devices and methods for generating Hand CO in an Ocontaining gas stream. The invention also provides devices and methods for removal of NOfrom an Ocontaining gas stream, particularly the oxygen-rich exhaust stream from a lean-burning engine, such as a diesel engine. The invention includes a fuel processor that efficiently converts added hydrocarbon fuel to a reducing mixture of Hand CO. The added fuel may be a portion of the onboard fuel on a vehicle. The Hand CO are incorporated into the exhaust stream and reacted over a selective lean NOcatalyst to convert NOto N. thereby providing an efficient means of NOemission control.

8074443, Dec 13, 2011

Nov 13, 2007

11/983909

Ralph Albert Dalla Betta - Mountainview CA, US
Joel M. Cizeron - Sunnyvale CA, US
David R. Sheridan - Menlo Park CA, US

Eaton Corporation - Cleveland OH

F01N 3/00

60286, 60274, 60295, 60301, 60303

An exhaust aftertreatment system is provided with a large channel combustor, a fuel reformer, and a lean NOtrap. The lean NOtrap is denitrated by steps comprising: heating the fuel reformer to steam reforming temperatures by introducing vaporized fuel to the large channel combustor and combusting a portion of the vaporized fuel under lean conditions, then making the exhaust-injected fuel mixture overall rich, whereby the fuel reformer produces syn gas that denitrates the lean NOtrap. The fuel reformer has a low thermal mass, whereby it is designed to heat to at least about 500 C. and catalyze steam reforming reaction with each denitration. The large channel combustor is a monolith having an average channel size larger than the fuel reformer and a thermal mass no more than about 20% that of the fuel reformer, whereby the large channel combustor facilitates low temperature startup of the fuel reformer.

8297043, Oct 30, 2012

Apr 6, 2009

12/419032

Joel M. Cizeron - Sunnyvale CA, US
Ralph Dalla Betta - Saratoga CA, US

F01N 3/28

60286, 60285, 60295, 60297, 60303

The present invention provides systems and methods to improve the performance and emission control of internal combustion engines equipped with nitrogen oxides storage-reduction (“NSR”) emission control systems. The system generally includes a NSR catalyst, a fuel processor located upstream of the NSR catalyst, and at least one fuel injection port. The fuel processor converts a fuel into a reducing gas mixture comprising CO and H. The reducing gas mixture is then fed into the NSR catalyst, where it regenerates the NSR adsorbent, reduces the NOto nitrogen, and optionally periodically desulfates the NSR catalyst. The fuel processor generally includes one or more catalysts, which facilitate reactions such as combustion, partial oxidation, and/or reforming and help consume excess oxygen present in an engine exhaust stream. The methods of the present invention provide for NSR catalyst adsorbent regeneration using pulsed fuel flow. Control strategies are also provided.

20040050037, Mar 18, 2004

May 6, 2003

10/431171

Ralph Betta - Mountain View CA, US
Joel Cizeron - Fremont CA, US

F01N003/00
F01N003/10

060/286000, 060/295000, 060/301000

The present invention provides systems and methods to improve the performance and emission control of internal combustion engines equipped with nitrogen oxides storage-reduction (“NSR”) emission control systems. The system comprises a NSR catalyst, a fuel processor located upstream of the NSR catalyst, and at least one fuel injection port. The fuel processor converts a fuel into a reducing gas mixture comprising CO and H. The reducing gas mixture is then fed into the NSR catalyst, where it regenerates the NSR adsorbent, reduces the NOto nitrogen, and optionally periodically desulfates the NSR catalyst. The fuel processor comprises one or more catalysts, which facilitate reactions such as combustion, partial oxidation, and/or reforming and help consume excess oxygen present in an engine exhaust stream. The methods of the present invention provide for NSR catalyst adsorbent regeneration using pulsed fuel flow. Control strategies are also provided.