Patents by Inventor Yisun Cheng
Yisun Cheng 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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Publication number: 20230250747Abstract: A catalytic converter system having oxygen storage materials is disclosed and methods for determining whether to reactivate oxygen storage materials and monitoring failure events of the oxygen storage materials are also disclosed.Type: ApplicationFiled: April 17, 2023Publication date: August 10, 2023Applicant: Ford Global Technologies, LLCInventors: Jason Wu, Eva Thanasiu, Giovanni Cavataio, Carolyn Parks Hubbard, Andrew Gregory Getsoian, Yisun Cheng, Natalie Roxas, Michael James Uhrich
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Patent number: 11629627Abstract: A catalytic converter system having oxygen storage materials is disclosed and methods for determining whether to reactivate oxygen storage materials and monitoring failure events of the oxygen storage materials are also disclosed.Type: GrantFiled: April 26, 2021Date of Patent: April 18, 2023Assignee: Ford Global Technologies, LLCInventors: Jason Wu, Eva Thanasiu, Giovanni Cavataio, Carolyn Parks Hubbard, Andrew Gregory Getsoian, Yisun Cheng, Natalie Roxas, Michael James Uhrich
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Patent number: 11583834Abstract: An automotive catalytic converter includes a three-way catalyst having Rh as the only precious metal configured as a front zone and a three-way catalyst having a mixture of Rh and Pd, Pt, or both configured as a rear zone, such that an exhaust gas from an internal combustion engine passes through the front zone before passing through the rear zone to minimize sulfur poisoning of the catalytic converter.Type: GrantFiled: September 18, 2017Date of Patent: February 21, 2023Assignee: Ford Global Technologies, LLCInventors: Yisun Cheng, Giovanni Cavataio, Jeffrey Scott Hepburn, Mira Bumbaroska, Carolyn Parks Hubbard
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Publication number: 20220341359Abstract: A catalytic converter system having oxygen storage materials is disclosed and methods for determining whether to reactivate oxygen storage materials and monitoring failure events of the oxygen storage materials are also disclosed.Type: ApplicationFiled: April 26, 2021Publication date: October 27, 2022Applicant: Ford Global Technologies, LLCInventors: Jason Wu, Eva Thanasiu, Giovanni Cavataio, Carolyn Parks Hubbard, Andrew Gregory Getsoian, Yisun Cheng, Natalie Roxas, Michael James Uhrich
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Publication number: 20200276563Abstract: An automotive catalytic converter includes a three-way catalyst having Rh as the only precious metal configured as a front zone and a three-way catalyst having a mixture of Rh and Pd, Pt, or both configured as a rear zone, such that an exhaust gas from an internal combustion engine passes through the front zone before passing through the rear zone to minimize sulfur poisoning of the catalytic converter.Type: ApplicationFiled: September 18, 2017Publication date: September 3, 2020Inventors: Yisun CHENG, Giovanni CAVATAIO, Jeffrey Scott HEPBURN, Mira BUMBAROSKA, Carolyn Parks HUBBARD
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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: 8875489Abstract: A method for controlling emissions from an engine includes reducing trapped nitrogen oxides to ammonia on an LNT catalyst while concurrently oxidizing soot accumulated on the LNT catalyst, and, flowing the ammonia so formed to an SCR catalyst.Type: GrantFiled: July 2, 2012Date of Patent: November 4, 2014Assignee: Ford Global Technologies, LLCInventors: Karen Marie Adams, Yisun Cheng, Giovanni Cavataio
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Patent number: 8404202Abstract: According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst surface, and a urea-resistant coating in contact with at least a portion of the catalyst surface, wherein the urea-resistant coating effectively reduces urea-induced deactivation of the catalyst. In at least another embodiment, the urea-resistant coating includes at least one oxide from the group consisting of titanium oxide, tungsten oxide, zirconium oxide, molybdenum oxide, aluminum oxide, silicon dioxide, sulfur oxide, niobium oxide, molybdenum oxide, yttrium oxide, nickel oxide, cobalt oxide, and combinations thereof.Type: GrantFiled: May 25, 2012Date of Patent: March 26, 2013Assignee: Ford Global Technologies, LLCInventors: Yisun Cheng, Yinyan Huang, Christine Kay Lambert
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Publication number: 20120269706Abstract: A method for controlling emissions from an engine includes reducing trapped nitrogen oxides to ammonia on an LNT catalyst while concurrently oxidizing soot accumulated on the LNT catalyst, and, flowing the ammonia so formed to an SCR catalyst.Type: ApplicationFiled: July 2, 2012Publication date: October 25, 2012Applicant: Ford Global Technologies, LLCInventors: Karen Marie Adams, Yisun Cheng, Giovanni Cavataio
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Publication number: 20120230894Abstract: According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst surface, and a urea-resistant coating in contact with at least a portion of the catalyst surface, wherein the urea-resistant coating effectively reduces urea-induced deactivation of the catalyst.Type: ApplicationFiled: May 25, 2012Publication date: September 13, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Yisun Cheng, Yinyan Huang, Christine Kay Lambert
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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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Patent number: 8209955Abstract: A method for controlling emissions from an engine includes reducing trapped nitrogen oxides to ammonia on an LNT catalyst while concurrently oxidizing soot accumulated on the LNT catalyst, and, flowing the ammonia so formed to an SCR catalyst.Type: GrantFiled: April 7, 2010Date of Patent: July 3, 2012Assignee: Ford Global Technologies, LLCInventors: Karen Marie Adams, Yisun Cheng, Giovanni Cavataio
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Patent number: 8207084Abstract: According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst surface, and a urea-resistant coating in contact with at least a portion of the catalyst surface, wherein the urea-resistant coating effectively reduces urea-induced deactivation of the catalyst. In at least another embodiment, the urea-resistant coating includes at least one oxide from the group consisting of titanium oxide, tungsten oxide, zirconium oxide, molybdenum oxide, aluminum oxide, silicon dioxide, sulfur oxide, niobium oxide, molybdenum oxide, yttrium oxide, nickel oxide, cobalt oxide, and combinations thereof.Type: GrantFiled: June 23, 2009Date of Patent: June 26, 2012Assignee: Ford Global Technologies, LLCInventors: Yisun Cheng, Yinyan Huang, Christine Kay Lambert
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Patent number: 8062601Abstract: An exemplary emission treatment system for reducing gases from the exhaust of an engine includes an exhaust passage for transporting the exhaust from the engine. A selective catalytic reduction (SCR) catalyst is disposed within the passage, and an oxidation catalyst is disposed in the passage upstream of the SCR catalyst. The oxidation catalyst has noble metal, with at least 90 wt. % of the metal comprising palladium (Pd).Type: GrantFiled: October 26, 2010Date of Patent: November 22, 2011Assignee: Ford Global Technologies, LLCInventors: Yisun Cheng, Clifford Norman Montreuil, Giovanni Cavataio, Douglas Allen Dobson, Christine Kay Lambert
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Publication number: 20110162349Abstract: The present invention relates to an emission treatment system for reducing gases from the exhaust of an engine. In at least one embodiment, the emission treatment system includes an exhaust passage for transporting the exhaust from the engine, a selective catalytic reduction (SCR) catalyst disposed within the passage, and an oxidation catalyst disposed in the passage upstream of the SCR catalyst, with the oxidation catalyst having metal, with at least 90 wt. % of the metal comprising palladium (Pd).Type: ApplicationFiled: October 26, 2010Publication date: July 7, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Yisun Cheng, Clifford Norman Montreuil, Giovanni Cavataio, Douglas Allen Dobson, Christine Kay Lambert
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Publication number: 20110131949Abstract: A method for controlling emissions from an engine includes reducing trapped nitrogen oxides to ammonia on an LNT catalyst while concurrently oxidizing soot accumulated on the LNT catalyst, and, flowing the ammonia so formed to an SCR catalyst.Type: ApplicationFiled: April 7, 2010Publication date: June 9, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Karen Marie Adams, Yisun Cheng, Giovanni Cavataio
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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: 20100322833Abstract: According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst surface, and a urea-resistant coating in contact with at least a portion of the catalyst surface, wherein the urea-resistant coating effectively reduces urea-induced deactivation of the catalyst. In at least another embodiment, the urea-resistant coating includes at least one oxide from the group consisting of titanium oxide, tungsten oxide, zirconium oxide, molybdenum oxide, aluminum oxide, silicon dioxide, sulfur oxide, niobium oxide, molybdenum oxide, yttrium oxide, nickel oxide, cobalt oxide, and combinations thereof.Type: ApplicationFiled: June 23, 2009Publication date: December 23, 2010Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Yisun Cheng, Yinyan Huang, Christine Kay Lambert
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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