公开(公告)号：US20180111111A1

公开(公告)日：2018-04-26

申请号：US15334164

申请日：2016-10-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ming Yang ,  Xingcheng Xiao ,  Ryan J. Day ,  Gongshin Qi

IPC: B01J23/58 ,  B01J37/02 ,  B01J37/08

CPC classification number: B01J23/58 ,  B01D53/94 ,  B01J35/0006 ,  B01J35/0013 ,  B01J35/0086 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/024 ,  B01J37/08

Abstract: A catalytic converter includes a catalyst. The catalyst includes a metal oxide support and platinum group metal (PGM) complexes atomically dispersed on the metal oxide support. The PGM complexes include a PGM species selected from the group consisting of an atom of a platinum group metal, a cluster including from 2 atoms to less than 10 atoms of the platinum group metal, a nanoparticle including 10 or more atoms of the platinum group metal, and combinations thereof. An alkali metal or an alkaline earth metal is bonded to the PGM species. The alkali or alkaline earth metal is part of a structure including oxygen atoms and hydrogen atoms. A barrier is disposed between a first PGM complex and a second PGM complex.

公开(公告)号：US20180056276A1

公开(公告)日：2018-03-01

申请号：US15253039

申请日：2016-08-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Gongshin Qi ,  Ryan J. Day ,  Ming Yang

IPC: B01J23/44 ,  B01J21/04 ,  B01J35/00 ,  B01J37/02 ,  B01J37/16 ,  B01J37/08 ,  F01N3/10 ,  B01D53/94 ,  F01N3/28

CPC classification number: B01J23/44 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/9022 ,  B01J21/04 ,  B01J35/0006 ,  B01J35/0013 ,  B01J37/0201 ,  B01J37/0221 ,  B01J37/088 ,  B01J37/16 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2825 ,  F01N2330/06 ,  F01N2370/02

Abstract: A catalytic converter includes a catalyst. The catalyst includes a support, platinum group metal (PGM) particles dispersed on the support, and metal oxide nanoparticles formed on the support. The metal oxide nanoparticles are dispersed between a first set of the PGM particles and a second set of the PGM particles to suppress aging of the PGM particles.

公开(公告)号：US09863922B2

公开(公告)日：2018-01-09

申请号：US14527412

申请日：2014-10-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Kevin L. Perry

IPC: G01N33/00 ,  F01N9/00 ,  F01N3/08 ,  B01D53/30 ,  B01D53/94

CPC classification number: G01N33/0037 ,  B01D53/30 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2257/404 ,  B01D2258/018 ,  F01N3/0842 ,  F01N9/00 ,  F01N2560/026 ,  F01N2560/14 ,  Y02A50/245 ,  Y02T10/24 ,  Y02T10/47

Abstract: An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A system for aftertreatment of the exhaust gas flow includes a NOx sensor configured to monitor within the exhaust gas flow one of a lambda value and a NOx concentration value and a computerized processor device configured to calibrate the monitored value for presence of one of NH3, H2, and hydrocarbons. In one embodiment, the system further includes a pair of NOx sensors, each monitoring both a lambda value and a NOx concentration value. In another embodiment, the system controls the aftertreatment based upon the calibrated values.

公开(公告)号：US20170095795A1

公开(公告)日：2017-04-06

申请号：US15247653

申请日：2016-08-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Gongshin Qi

IPC: B01J23/40 ,  B01J35/02 ,  B01J35/04 ,  B01J37/00 ,  B01D53/94 ,  B01J37/08 ,  B01J37/34 ,  F01N3/10 ,  F01N3/28 ,  B01J35/00 ,  B01J37/02

CPC classification number: B01J23/40 ,  B01D53/944 ,  B01D53/945 ,  B01D2255/102 ,  B01D2255/702 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2255/9202 ,  B01J35/0006 ,  B01J35/026 ,  B01J35/04 ,  B01J35/10 ,  B01J37/0018 ,  B01J37/0228 ,  B01J37/0238 ,  B01J37/024 ,  B01J37/08 ,  B01J37/349 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2828 ,  F01N2330/06 ,  F01N2370/02 ,  Y02T10/22

Abstract: A catalytic converter includes a catalyst. The catalyst includes a supporting oxide layer. The catalyst also includes platinum group metal (PGM) particles partially embedded in the supporting oxide layer such that a portion of each PGM particle is surrounded by the supporting oxide layer and an other portion of each PGM particle remains exposed.

公开(公告)号：US12269016B2

公开(公告)日：2025-04-08

申请号：US17749894

申请日：2022-05-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yuntao Gu ,  Gongshin Qi ,  Jiazhi Hu ,  Wei Li

IPC: B01J23/63 ,  B01D53/94 ,  B01J21/04 ,  B01J35/23 ,  B01J35/61 ,  B01J35/63 ,  B01J37/02 ,  F01N3/28

Abstract: A layered catalyst structure for purifying an exhaust gas stream includes a catalyst support and a rhodium catalyst layer including an atomic dispersion of rhodium ions and/or rhodium atoms adsorbed on an exterior surface of the catalyst support. The catalyst support includes an alumina substrate, a first ceria layer disposed on and extending substantially continuously over the alumina substrate, and a second colloidal ceria layer formed directly on the first ceria layer over the alumina substrate.

公开(公告)号：US11167269B1

公开(公告)日：2021-11-09

申请号：US16928093

申请日：2020-07-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gongshin Qi ,  Wei Li

IPC: F01N3/10 ,  B01J23/656 ,  B01J35/00 ,  B01J35/04 ,  B01J21/04 ,  B01J23/10 ,  F01N3/28

Abstract: A three-way catalyst device (TWC) includes a first catalytic brick (FCB) and a second catalytic brick (SCB) downstream from the FCB. The FCB has a first washcoat applied to a first support body including ceramic and/or metal oxide particles, Pd particles, and Rh particles, and has at most 35 g/ft3 Pd and at most 7.5 g/ft3 Rh. The SCB has a second washcoat applied to a second support body including ceramic and/or metal oxide particles, Pt particles, and Rh particles, and has a Pt loading of at most 35 g/ft3 Pt and a Rh loading of at most 7.0 g/ft3 Rh. The FCB can have 25 g/ft3 to 35 g/ft3 Pd and 5.5 g/ft3 to 7.5 g/ft3 Rh and the SCB can have 25 g/ft3 to 35 g/ft3 Pt and 5.0 g/ft3 to 7.0 g/ft3 Rh. The TWC can receive exhaust gas from an internal combustion engine powering a vehicle.

公开(公告)号：US10695749B2

公开(公告)日：2020-06-30

申请号：US16056973

申请日：2018-08-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Ming Yang ,  Gongshin Qi ,  Wei Li

IPC: B01J23/02 ,  B01J23/10 ,  B01J23/38 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/48 ,  B01J23/58 ,  B01J23/63 ,  B01J23/66 ,  B01J23/76 ,  B01J23/78 ,  B01J23/83 ,  B01J23/89 ,  B01J33/00 ,  B01J35/00 ,  B01J35/02 ,  B01J35/04 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J21/10 ,  B01J21/12 ,  B01J21/14 ,  B01D53/94

Abstract: Sinter-resistant catalyst systems include a catalytic substrate comprising a plurality of metal catalytic nanoparticles bound to a metal oxide catalyst support, and a coating of oxide nanoparticles disposed on the metal catalytic nanoparticles and optionally on the metal oxide support. The oxide nanoparticles comprise one or more lanthanum oxides and optionally one or more barium oxides, and additionally one or more oxides of aluminum, cerium, zirconium, titanium, silicon, magnesium, zinc, iron, strontium, and calcium. The metal catalytic nanoparticles can include ruthenium, rhodium, palladium, osmium, iridium, and platinum, rhenium, copper, silver, and/or gold. The metal oxide catalyst support can include one or more metal oxides selected from the group consisting of Al2O3, CeO2, ZrO2, TiO2, SiO2, La2O3, MgO, and ZnO. The coating of oxide nanoparticles is about 0.1% to about 50% lanthanum and barium oxides. The oxide nanoparticles can further include one or more oxides of magnesium and/or cobalt.

公开(公告)号：US10400644B2

公开(公告)日：2019-09-03

申请号：US15655398

申请日：2017-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael A. Smith ,  Luca Lauritano ,  Luis Daniel Guerrero Cruz ,  Claudio Ciaravino ,  Gongshin Qi

IPC: F01N3/08 ,  C01B39/02 ,  F01N3/029 ,  F02D41/02

Abstract: A method of adjusting reductant injection for a selective catalyst reduction device with a soot filter (SCRF) includes calculating, through a processor, an amount of soot in the SCRF, determining, through the processor, a shrinking core model of the SCRF based on the amount of soot, calculating, with the processor using the shrinking core model, an amount of reductant to inject into the SCRF, and injecting the amount of reductant into the SCRF.

公开(公告)号：US10309278B2

公开(公告)日：2019-06-04

申请号：US15723747

申请日：2017-10-03

Applicant: GM Global Technology Operations LLC

Inventor： Rahul Mital ,  Gongshin Qi ,  Anil Yadav

IPC: B01D53/86 ,  B01D53/94 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20

Abstract: Described herein is a desulfurization method for desulfurizing a SCR device treating an exhaust gas. The desulfurization method includes injecting a reductant into the exhaust gas upstream from or into the SCR device and increasing a temperature of the exhaust gas.

公开(公告)号：US10240506B2

公开(公告)日：2019-03-26

申请号：US15372503

申请日：2016-12-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yue-Yun Wang ,  Gongshin Qi ,  Guiseppe Mazzara Bologna

IPC: F01N3/00 ,  F01N9/00 ,  F01N3/20 ,  F01N11/00

Abstract: Methods, systems, and vehicles are provided for estimating nitrogen oxide values for vehicles. In accordance with one embodiment, a system includes a memory and a processor. The memory is configured to store one or more kinetic models pertaining to a propulsion system for a vehicle. The processor is configured to at least facilitate obtaining a nitrogen value pertaining to a selective catalytic reduction (SCR) unit of the propulsion system, obtaining an initial nitrogen oxide measurement via a nitrogen oxide sensor of the propulsion system, using the nitrogen value as an input for the one or more kinetic models pertaining to the propulsion system, generating a kinetic model output from the one or more kinetic models, and estimating an updated value for the initial nitrogen oxide measurement based on the kinetic model output.