Patents by Inventor Josh Driscoll
Josh Driscoll has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9879581Abstract: An after-treatment system includes, in series along an exhaust gas flow direction through the after-treatment system: a diesel oxidation catalyst (DOC), a diesel exhaust fluid (DEF) delivery device, a soot-reducing device and a selective catalytic reduction (SCR) catalyst.Type: GrantFiled: March 25, 2016Date of Patent: January 30, 2018Assignee: Caterpillar Inc.Inventors: Anthony C. Rodman, J. Josh Driscoll, Bogdan Balea, Wade J. Robel
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Publication number: 20170276044Abstract: An after-treatment system includes, in series along an exhaust gas flow direction through the after-treatment system: a diesel oxidation catalyst (DOC), a diesel exhaust fluid (DEF) delivery device, a soot-reducing device and a selective catalytic reduction (SCR) catalyst.Type: ApplicationFiled: March 25, 2016Publication date: September 28, 2017Applicant: Caterpillar Inc.Inventors: Anthony C. Rodman, J. Josh Driscoll, Bogdan Balea, Wade J. Robel
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Publication number: 20170276053Abstract: An after-treatment system includes, in series along an exhaust gas flow direction through the after-treatment system: a diesel oxidation catalyst (DOC) or a passive NOx adsorber (PNA), a diesel exhaust fluid (DEF) delivery device, a soot-reducing device and a selective catalytic reduction (SCR) catalyst, which may also include an additional PNA.Type: ApplicationFiled: September 20, 2016Publication date: September 28, 2017Applicant: Caterpillar Inc.Inventors: Wade J. Robel, Tom Paulson, Anthony C. Rodman, J. Josh Driscoll, Bogdan Balea
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Patent number: 8070857Abstract: A particulate removal tool and method are provided to remove the particulates such as ash and soot from a particulate filter. The particulate filter can be placed on a filter holder in a housing of the tool where a quick burst of air can be provided to clean the particulate filter. The air then can travel to a container which includes additional filter to filter the air. A vacuum can be used to remove additional particulates from the container.Type: GrantFiled: February 1, 2008Date of Patent: December 6, 2011Assignee: SPX CorporationInventors: Jim Jirele, Stan Norland, William Clayton Brown, Jamie Erin Stringfield, David Painter, Mark Gasper, Eric Vinyard, James Sarnes, Jade Katinas, Jason Scott Cooper, Cheryl Lynn Sellers, James Josh Driscoll
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Patent number: 7685809Abstract: Often NOx selective catalysts that use ammonia to reduce NOx within exhaust to a harmless gas require on-board storage of ammonia which can be hazardous and inconvenient. In order to generate ammonia in exhaust, the present disclosure increases a NOx concentration in exhaust from at least one combustion chamber, at least in part, by injecting fuel in a predetermined increased NOx generation sequence that includes a first injection during non-auto ignition conditions and a second injection during auto ignition conditions. At least a portion of the NOx is converted to ammonia by passing at least a portion of the exhaust with the increased NOx concentration over an ammonia-producing catalyst.Type: GrantFiled: October 3, 2005Date of Patent: March 30, 2010Assignee: Caterpillar Inc.Inventors: Josh Driscoll, Wade J. Robel, Cory A. Brown, Roger L. Urven, Jr.
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Patent number: 7624569Abstract: Engines that include different combustion strategies for different cylinders may create a power imbalance resulting in undesirable engine vibrations. The engine system of the present disclosure includes a first engine that is operable to produce a high NOx concentration exhaust and a second engine that is operable to produce a low NOx concentration exhaust. The first engine is fluidly connected to a first section of an exhaust passage and the second engine is fluidly connected to a second section of the exhaust passage. The exhaust from the first engine and the exhaust from the second engine are merged in a merged section of the exhaust passage downstream from both the first and second sections of the exhaust passages. The high NOx concentration exhaust may be converted to ammonia for reacting with the low NOx concentration exhaust to arrive at very low NOx concentration from the merged exhaust.Type: GrantFiled: October 3, 2005Date of Patent: December 1, 2009Assignee: Caterpillar Inc.Inventors: Josh Driscoll, Wade J. Robel, Jason Bloms
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Patent number: 7607291Abstract: An engine system includes first and second combustion chamber groups that supply exhaust to respective first and second exhaust passages. NOx in the exhaust of the first combustion group is converted to ammonia, such as by enriching the exhaust with fuel and then passing the mixture over an appropriate catalyst. Particles are trapped and continuously oxidized through appropriate placement of one or more particle traps coated with an appropriate oxidizing catalyst. NOx in the second passage from the second combustion group is combined with ammonia produced in the first passage and converted to nitrogen and water in a merged passage before being vented to atmosphere. This conversion is accomplished by passing the merged exhaust over an appropriate selective catalytic reduction catalyst.Type: GrantFiled: October 3, 2005Date of Patent: October 27, 2009Assignee: Caterpillar Inc.Inventors: Josh Driscoll, Wade J. Robel
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Publication number: 20080184679Abstract: A particulate removal tool and method are provided to remove the particulates such as ash and soot from a particulate filter. The particulate filter can be placed on a filter holder in a housing of the tool where a quick burst of air can be provided to clean the particulate filter. The air then can travel to a container which includes additional filter to filter the air. A vacuum can be used to remove additional particulates from the container.Type: ApplicationFiled: February 1, 2008Publication date: August 7, 2008Inventors: Jim Jirele, Stan Norland, William Clayton Brown, Jamie Erin Stringfield, David Painter, Mark Gasper, Eric Vinyard, James Sarnes, Jade Katinas, Jason Scott Cooper, Cheryl Lynn Sellers, James Josh Driscoll
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Patent number: 7332016Abstract: A particulate trap has a housing with an inlet and an outlet. The particulate trap also has a plurality of fluidly isolated filters stacked within the housing, between the inlet and the outlet. The stacked plurality of filters have a stack direction and a transverse direction and the flow of exhaust is directed through the plurality of filters in the transverse direction. The particulate trap further has an actuator with a blocking portion configured for linear movement to selectively block exhaust flow through each of the plurality of filters.Type: GrantFiled: July 30, 2004Date of Patent: February 19, 2008Assignee: Caterpillar Inc.Inventors: Joanna Louise Costura, Matthew E. Williams, Matthew T. Kiser, Cornelius N. Opris, J. Josh Driscoll, Dave Michael Thaler, Robert L. Meyer
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Publication number: 20070092426Abstract: Often NOx selective catalysts that use ammonia to reduce NOx within exhaust to a harmless gas require on-board storage of ammonia which can be hazardous and inconvenient. In order to generate ammonia in exhaust, the present disclosure increases a NOx concentration in exhaust from at least one combustion chamber, at least in part, by injecting fuel in a predetermined increased NOx generation sequence that includes a first injection during non-auto ignition conditions and a second injection during auto ignition conditions. At least a portion of the NOx is converted to ammonia by passing at least a portion of the exhaust with the increased NOx concentration over an ammonia-producing catalyst.Type: ApplicationFiled: October 3, 2005Publication date: April 26, 2007Inventors: Josh Driscoll, Wade Robel, Cory Brown, Roger Urven
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Publication number: 20070074506Abstract: An engine system includes first and second combustion chamber groups that supply exhaust to respective first and second exhaust passages. NOx in the exhaust of the first combustion group is converted to ammonia, such as by enriching the exhaust with fuel and then passing the mixture over an appropriate catalyst. Particles are trapped and continuously oxidized through appropriate placement of one or more particle traps coated with an appropriate oxidizing catalyst. NOx in the second passage from the second combustion group is combined with ammonia produced in the first passage and converted to nitrogen and water in a merged passage before being vented to atmosphere. This conversion is accomplished by passing the merged exhaust over an appropriate selective catalytic reduction catalyst.Type: ApplicationFiled: October 3, 2005Publication date: April 5, 2007Inventors: Josh Driscoll, Wade Robel
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Publication number: 20070074504Abstract: Engines that include different combustion strategies for different cylinders may create a power imbalance resulting in undesirable engine vibrations. The engine system of the present disclosure includes a first engine that is operable to produce a high NOx concentration exhaust and a second engine that is operable to produce a low NOx concentration exhaust. The first engine is fluidly connected to a first section of an exhaust passage and the second engine is fluidly connected to a second section of the exhaust passage. The exhaust from the first engine and the exhaust from the second engine are merged in a merged section of the exhaust passage downstream from both the first and second sections of the exhaust passages. The high NOx concentration exhaust may be converted to ammonia for reacting with the low NOx concentration exhaust to arrive at very low NOx concentration from the merged exhaust.Type: ApplicationFiled: October 3, 2005Publication date: April 5, 2007Inventors: Josh Driscoll, Wade Robel, Jason Bloms
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Publication number: 20070068142Abstract: In certain engine systems, there may be a need, such as exhaust purification, to operate two power-producing portions of the engine system in different manners. The engine system of the present disclosure includes at least one engine that includes a first power-producing portion and a second power-producing portion. At least one electronic control module includes a high NOx generation algorithm in communication with the first power-producing portion and a low NOx generation algorithm in communication with the second power-producing portion. The high NOx generation algorithm is operable to signal at least one fuel injector within the first power-producing portion to inject fuel into at least one combustion chamber in a predetermined high NOx generation sequence that includes an injection during non-auto ignition conditions.Type: ApplicationFiled: September 27, 2005Publication date: March 29, 2007Inventors: Wade Robel, Josh Driscoll