Patents by Inventor Robert Henry Hammerle
Robert Henry Hammerle 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: 9810118Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3-SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3-SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap-enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3-SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: GrantFiled: September 8, 2010Date of Patent: November 7, 2017Assignee: Ford Global Technologies, LLCInventors: Haren Sakarai Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Patent number: 8263033Abstract: According to one aspect of the present invention, a palladium-containing oxidation catalyst is provided. In one embodiment, the palladium-containing oxidation catalyst includes a first zone having a first PGM catalyst loading with a platinum (Pt) to palladium (Pd) weight ratio of no greater than 10.0; and a second zone disposed next to the first zone. In another embodiment, the second PGM catalyst loading has a palladium (Pd) to platinum (Pt) weight ratio of no greater than 4.0.Type: GrantFiled: February 23, 2010Date of Patent: September 11, 2012Assignee: Ford Global Technologies, LLCInventors: Douglas Allen Dobson, Robert Henry Hammerle
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Patent number: 8240132Abstract: This catalyst system simultaneously removes ammonia and enhances net NO, conversion by placing an NH3-SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3-SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap—enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3-SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: GrantFiled: March 9, 2007Date of Patent: August 14, 2012Assignee: Ford Global Technologies, Inc.Inventors: Haren S. Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Publication number: 20110206584Abstract: According to one aspect of the present invention, a palladium-containing oxidation catalyst is provided. In one embodiment, the palladium-containing oxidation catalyst includes a first zone having a first PGM catalyst loading with a platinum (Pt) to palladium (Pd) weight ratio of no greater than 10.0; and a second zone disposed next to the first zone. In another embodiment, the second PGM catalyst loading has a palladium (Pd) to platinum (Pt) weight ratio of no greater than 4.0.Type: ApplicationFiled: February 23, 2010Publication date: August 25, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Douglas Allen Dobson, Robert Henry Hammerle
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Publication number: 20110005200Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3-SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3-SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap-enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3-SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: ApplicationFiled: September 8, 2010Publication date: January 13, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Haren S. GANDHI, John Vito CAVATAIO, Robert Henry HAMMERLE, Yisun CHENG
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Publication number: 20100209321Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap-enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3—SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: ApplicationFiled: February 16, 2010Publication date: August 19, 2010Applicant: Ford Global Technologies, LLCInventors: Haren S. Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Patent number: 7674743Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap-enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3—SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: GrantFiled: December 1, 2008Date of Patent: March 9, 2010Assignee: Ford Global Technologies, LLCInventors: Haren Sakarai Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Patent number: 7640730Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap—enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3—SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: GrantFiled: March 9, 2007Date of Patent: January 5, 2010Assignee: Ford Global Technologies, LLCInventors: Haren S. Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Publication number: 20090149318Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap-enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3—SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: ApplicationFiled: December 1, 2008Publication date: June 11, 2009Applicant: Ford Global Technologies, LLCInventors: Haren S. GANDHI, John Vito CAVATAIO, Robert Henry HAMMERLE, Yisun CHENG
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Patent number: 7485273Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap—enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3—SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: GrantFiled: March 9, 2007Date of Patent: February 3, 2009Assignee: Ford Global Technologies, LLCInventors: Haren S. Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Patent number: 7332135Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3-SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3-SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap—enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3-SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: GrantFiled: October 22, 2002Date of Patent: February 19, 2008Assignee: Ford Global Technologies, LLCInventors: Haren S Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Patent number: 7320781Abstract: A method for controlling reductant injection into an exhaust stream upstream of a catalyst coupled to an internal combustion engine is disclosed. In the method, an ammonia sensor located downstream of the exhaust catalyst is used to determine ammonia concentration in the exhaust stream. The ammonia concentration is compared to an allowable threshold and an allowable fraction, i.e., a maximum limit on a fraction of ammonia in the exhaust stream compared with the ammonia supplied by the reductant injector. Additionally, based on a NOx sensor, it is determined whether NOx conversion of the catalyst has increased in response to an increase in reductant injection. If not, reductant injection quantity is reduced.Type: GrantFiled: July 1, 2002Date of Patent: January 22, 2008Inventors: Christine Kay Lambert, Karen Marie Adams, Robert Henry Hammerle
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Patent number: 6928806Abstract: A system for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. This system configuration results in improved NOx conversion due to fast SCR catalyst warm-up and higher operating temperatures. Additionally, placing the particulate filter last in this system configuration reduces tailpipe ammonia emissions as well as prevents any thermal damage to the SCR catalyst due to the particulate filter regeneration.Type: GrantFiled: November 21, 2002Date of Patent: August 16, 2005Assignee: Ford Global Technologies, LLCInventors: Paul Joseph Tennison, Paul M. Laing, Christine Kay Lambert, Robert Henry Hammerle, William Charles Ruona
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Patent number: 6823663Abstract: A system and a method for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. The particulate filter regeneration method teaches controlling operating conditions to bring the particulate filter temperature in the range where exothermic reaction between hydrocarbon and oxygen occurs. Once this is accomplished, extra hydrocarbons are injected into the exhaust gas entering the particulate filter where they combust and the resulting exotherm regenerates the filter. This method achieves effective particulate matter control while eliminating the risk of thermal damage to the upstream devices and minimizing regeneration fuel economy penalty.Type: GrantFiled: November 21, 2002Date of Patent: November 30, 2004Assignee: Ford Global Technologies, LLCInventors: Robert Henry Hammerle, Christine Kay Lambert, Paul M. Laing, Paul Joseph Tennison, William Charles Ruona
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Patent number: 6813882Abstract: A system and method for removing NOx from an emission control device is provided. The emission control device is coupled adjacent and downstream of an oxidation catalyst. The method includes adding a reductant to the exhaust gases flowing into the oxidation catalyst. The method further includes partially oxidizing the reductant in the oxidation catalyst to transition a remaining portion of the reductant into a vapor phase. Finally, the method includes oxidizing the remaining portion of the reductant in the emission control device to remove NOx from the device.Type: GrantFiled: August 7, 2002Date of Patent: November 9, 2004Assignee: Ford Global Technologies, LLCInventors: Jeffrey Scott Hepburn, Robert Henry Hammerle
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Publication number: 20040098979Abstract: A system and a method for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. The particulate filter regeneration method teaches controlling operating conditions to bring the particulate filter temperature in the range where exothermic reaction between hydrocarbon and oxygen occurs. Once this is accomplished, extra hydrocarbons are injected into the exhaust gas entering the particulate filter where they combust and the resulting exotherm regenerates the filter. This method achieves effective particulate matter control while eliminating the risk of thermal damage to the upstream devices and minimizing regeneration fuel economy penalty.Type: ApplicationFiled: November 21, 2002Publication date: May 27, 2004Inventors: Robert Henry Hammerle, Christine Kay Lambert, Paul M. Laing, Paul Joseph Tennison, William Charles Ruona
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Publication number: 20040098973Abstract: A system for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. This system configuration results in improved NOx conversion due to fast SCR catalyst warm-up and higher operating temperatures. Additionally, placing the particulate filter last in this system configuration reduces tailpipe ammonia emissions as well as prevents any thermal damage to the SCR catalyst due to the particulate filter regeneration.Type: ApplicationFiled: November 21, 2002Publication date: May 27, 2004Inventors: Paul Joseph Tennison, Paul M. Laing, Christine Kay Lambert, Robert Henry Hammerle, William Charles Ruona
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Publication number: 20040076565Abstract: This catalyst system simultaneously removes ammonia and enhances net NOx conversion by placing an NH3—SCR catalyst formulation downstream of a lean NOx trap. By doing so, the NH3—SCR catalyst adsorbs the ammonia from the upstream lean NOx trap generated during the rich pulses. The stored ammonia then reacts with the NOx emitted from the upstream lean NOx trap—enhancing the net NOx conversion rate significantly, while depleting the stored ammonia. By combining the lean NOx trap with the NH3—SCR catalyst, the system allows for the reduction or elimination of NH3 and NOx slip, reduction in NOx spikes and thus an improved net NOx conversion during lean and rich operation.Type: ApplicationFiled: October 22, 2002Publication date: April 22, 2004Inventors: Haren S. Gandhi, John Vito Cavataio, Robert Henry Hammerle, Yisun Cheng
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Publication number: 20030113242Abstract: An emission control device for an engine is provided. The device includes an oxidation catalyst receiving exhaust gases from the engine. The catalyst heats the exhaust gases when the exhaust gases are rich of stoichiometry. The device further includes a combined particulate filter and NOx trap adjacent and downstream of the catalyst for storing NOx and particulate matter in exhaust gases from the engine.Type: ApplicationFiled: August 7, 2002Publication date: June 19, 2003Inventors: Jeffrey Scott Hepburn, Robert Henry Hammerle
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Publication number: 20030113249Abstract: A system and method for removing SOx and particulate matter from an emission control device receiving exhaust gases from an engine is provided. The method includes adding a reductant to the exhaust gases to increase a temperature of the emission control device above a threshold temperature. The method further includes ceasing adding the reductant to the exhaust gases to remove particulate matter from the device. The method further includes adding additional reductant to the exhaust gases to remove SOx from the device.Type: ApplicationFiled: August 7, 2002Publication date: June 19, 2003Inventors: Jeffrey Scott Hepburn, Robert Henry Hammerle