Patents by Inventor Jianwen Li

Jianwen Li 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).

  • Patent number: 10125659
    Abstract: An exhaust gas treatment device includes a housing having a wall. The wall of the housing defines an interior chamber. A substrate is supported by the housing within the interior chamber of the housing. The substrate extends along a longitudinal axis. The substrate includes a flow through structure that allows the flow of exhaust gas to flow through the substrate. The substrate includes a catalytic composition disposed thereon for reacting with the flow of exhaust gas. The substrate includes a cavity, extending along a cavity axis, which is transverse to the longitudinal axis of the substrate. A sensor is attached to the housing. The sensor includes a probe that at least partially extends into the cavity of the substrate, for sensing a gaseous component in the flow of exhaust gas. The cavity mixes the flow of exhaust gas and directs the exhaust gas toward the probe of the sensor.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: November 13, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Luciano Nunziato Di Perna, Jianwen Li, Raffaello Ardanese, Rahul Mital, David B. Brown
  • Publication number: 20180304732
    Abstract: A vehicle electrically driving assembly, connected to the rear or front axle half shaft of the vehicle, that includes: an electric motor, a speed reducer, an electromagnetic tooth-mounted clutch and a differential. The speed reducer has multiple stages of gears, an input shaft and an intermediate shaft; the differential is connected between the axle half shafts; the electromagnetic tooth-mounted clutch is installed on the input shaft or the intermediate shaft of the speed reducer or on the axle half shafts. When the electromagnetic tooth-mounted clutch is in engagement, driving force of the electric motor is transmitted to the vehicle axle via the speed reducer and the electromagnetic jaw clutch, to provide an auxiliary driving force to the vehicle. When the power of the entire vehicle is insufficient at the acceleration phase, the electrically driving assembly, by using the electromagnetic jaw clutch, provides an auxiliary driving force to the entire vehicle.
    Type: Application
    Filed: January 20, 2017
    Publication date: October 25, 2018
    Applicant: Jing-Jin Electric Technologies Co., Ltd.
    Inventors: Ping YU, Changqi YANG, Ting WANG, Jianwen LI, Xixian YANG
  • Patent number: 10047651
    Abstract: Selective catalytic reduction filter (SCRF) devices and systems incorporating the same are provided. Systems can include an exhaust gas source, an exhaust gas conduit capable of receiving an exhaust gas stream from the exhaust gas source, and an SCRF device in fluid communication therewith. The SCRF device can include a filter, a selective catalytic reduction (SCR) catalyst disposed on at least portion of the filter, and a soot oxidizing catalyst (SOC) material disposed on at least a portion of one or more of the filter and the SCR catalyst. The SOC material can include one or more transition metal oxides, excluding platinum group metals. The SOC material can include one or more of a titanium oxide, an iron oxide, a tungsten oxide, a cerium oxide, and acidic zirconia. The SOC material can be in amorphous form. The SOC material can be biased towards to the upstream side of the filter.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 14, 2018
    Inventors: Rahul Mital, David Brown, Wei Li, Jianwen Li
  • Patent number: 10040029
    Abstract: A method is disclosed of providing a fuel efficient regeneration of an exhaust after-treatment (AT) system that includes a lean oxides of nitrogen (NOX) trap (LNT) and a selective catalytic reduction filter (SCRF) positioned downstream of the LNT. The method includes regulating a selectable position valve. The valve permits a first gas flow portion to pass through the LNT and diverts a remaining second portion of exhaust gas flow from a first passage connecting an engine and the AT system to a second exhaust passage to thereby bypass the LNT. The method also includes regulating a first device to inject fuel into the first portion of the exhaust gas flow. The injection of fuel in to the first portion of the exhaust gas flow provides fuel efficient regeneration of the LNT and promotes NOX conversion and ammonia (NH3) formation in the LNT. A system employing the method is also disclosed.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: August 7, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Rahul Mital, Jianwen Li, Andrea De Filippo, Chang H Kim, Shouxian Ren
  • Patent number: 9995720
    Abstract: A snorkel assembly for reading optimization of a sensor, wherein the snorkel assembly may be configured to be positioned around and spaced apart from the sensor. The snorkel assembly may include an upstream side and a downstream side. The snorkel assembly may include a cup section and a tube section extending from the cup section. The tube section may include an inlet opening on the upstream side of the snorkel assembly. The cup section may include an exhaust opening on the downstream side of the snorkel assembly.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: June 12, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Luciano Nunziato Di Perna, Chijou Wang, Rahul Mital, Jianwen Li, James B. Rodgers
  • Publication number: 20180156089
    Abstract: Selective catalytic reduction filter (SCRF) devices and systems incorporating the same are provided. Systems can include an exhaust gas source, an exhaust gas conduit capable of receiving an exhaust gas stream from the exhaust gas source, and an SCRF device in fluid communication therewith. The SCRF device can include a filter, a selective catalytic reduction (SCR) catalyst disposed on at least portion of the filter, and a soot oxidizing catalyst (SOC) material disposed on at least a portion of one or more of the filter and the SCR catalyst. The SOC material can include one or more transition metal oxides, excluding platinum group metals. The SOC material can include one or more of a titanium oxide, an iron oxide, a tungsten oxide, a cerium oxide, and acidic zirconia. The SOC material can be in amorphous form. The SOC material can be biased towards to the upstream side of the filter.
    Type: Application
    Filed: December 6, 2016
    Publication date: June 7, 2018
    Inventors: Rahul Mital, David Brown, Wei Li, Jianwen Li
  • Publication number: 20180078912
    Abstract: An assembly for mixing liquid within a gas flow includes a hollow conduit that is configured for containing a flow of gas and liquid droplets. The assembly includes a hollow conduit having an inner wall and configured for containing a flow of gas and liquid droplets. A first plurality of spaced blades is disposed in the conduit in a first plane. A second plurality of spaced blades are disposed in the conduit in a second plane disposed downstream of the first plane, the second plurality of spaced blades being circumferentially offset from the first plurality of spaced blades. A third plurality of spaced blades are disposed in the conduit in a third plane disposed downstream of the second plane, the third plurality of spaced blades being circumferentially offset from the second plurality of spaced blades.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 22, 2018
    Inventors: Anil YADAV, Jianwen LI, Calvin K. KOCH, Rahul MITAL
  • Patent number: 9897025
    Abstract: A direct fuel injection internal combustion engine fluidly coupled to an exhaust aftertreatment system is described and includes a plurality of fluidly coupled exhaust purifying devices and an exhaust gas sensor. A method of controlling the engine includes, activating, via a heater controller, a heating element of the exhaust gas sensor in response to starting the internal combustion engine. An exhaust gas feedstream is monitored to determine a temperature of the exhaust gas sensor. Engine control to effect heating of one of the exhaust purifying devices is permitted only when a temperature of the exhaust gas sensor is greater than a threshold temperature.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: February 20, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Chad E. Marlett, James L. Meyer, Jianwen Li, Marco Girotto
  • Publication number: 20180010507
    Abstract: An exhaust gas treatment device includes a housing having a wall. The wall of the housing defines an interior chamber. A substrate is supported by the housing within the interior chamber of the housing. The substrate extends along a longitudinal axis. The substrate includes a flow through structure that allows the flow of exhaust gas to flow through the substrate. The substrate includes a catalytic composition disposed thereon for reacting with the flow of exhaust gas. The substrate includes a cavity, extending along a cavity axis, which is transverse to the longitudinal axis of the substrate. A sensor is attached to the housing. The sensor includes a probe that at least partially extends into the cavity of the substrate, for sensing a gaseous component in the flow of exhaust gas. The cavity mixes the flow of exhaust gas and directs the exhaust gas toward the probe of the sensor.
    Type: Application
    Filed: July 6, 2016
    Publication date: January 11, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Luciano Nunziato Di Perna, Jianwen Li, Raffaello Ardanese, Rahul Mital, David B. Brown
  • Patent number: 9856774
    Abstract: An engine exhaust system includes an exhaust pipe assembly having an engine exhaust system inlet configured to receive engine exhaust and an engine exhaust system outlet. The system includes a first selective catalytic reduction (SCR) catalyst device positioned downstream in exhaust flow from the engine exhaust system inlet. The first SCR catalyst device includes a substrate with a metallic catalyst coated on the substrate. An electric heater is configured to heat the metallic catalyst. A second SCR catalyst device is positioned downstream in engine exhaust flow from the first SCR catalyst device and upstream of the engine exhaust system outlet. The first SCR catalyst device and the exhaust pipe assembly define an empty chamber between the substrate and the second SCR catalyst device. Engine exhaust flows directly from the substrate to the second SCR catalyst device through the empty chamber.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: January 2, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Luciano Nunziato Di Perna, Raffaello Ardanese, Michael J. Paratore, Jr., Rahul Mital, Jianwen Li
  • Patent number: 9850797
    Abstract: A SCR device includes a substrate having a first portion, and a second portion disposed downstream of the first portion. The first portion of the substrate includes a volume that is between 15% and 25% of a total volume of the substrate. A first selective catalytic reduction compound is disposed on the first portion of the substrate, and includes an iron zeolite (Fe-Zeolite) compound. A second selective catalytic reduction compound is disposed on the second portion of the substrate, and includes a copper (Cu) SAPO-34 compound. The copper SAPO-34 compound includes a catalyst density of less than 2.74 mg copper per cubic centimeter of copper SAPO-34 compound. The copper SAPO-34 compound is applied onto the second portion of the substrate at a compound density of less than 110 g of copper SAPO-34 compound per liter of volume of the second portion of the substrate.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: December 26, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Rahul Mital, Jianwen Li, Steven J. Schmieg
  • Publication number: 20170363109
    Abstract: In an electric motor-driven oil pump assembly for use with an engine in a vehicle, such as with an automatic engine-stop system in which an electric motor-driven oil pump is driven by an electric motor for hydraulic pressure supply to a transmission or engine of an automotive vehicle, at least in a stopped state of a mechanical oil pump driven by the engine, a controller for operating the motor for controlling the oil pump is provided in a housing proximal the flowing oil fluid such that the flowing oil fluid maintains the temperature of the controller below a predetermined temperature to avoid failure of the electronic components of the controller.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Inventors: Liping Wang, Vladimir Vukas, Jianwen Li, Karthikeyan Ganesan
  • Patent number: 9821282
    Abstract: An exhaust system for a diesel engine, includes an exhaust passage adapted to be attached to the diesel engine. A diesel oxidation catalyst is provided in the exhaust passage along with a selective catalyst reduction device disposed downstream from the diesel oxidation catalyst. A diesel exhaust fluid mixing system includes a diesel exhaust fluid injection nozzle and a mixing device defining a single inlet opening and a single outlet opening connected to one another by a partial spiral flow passage. The diesel exhaust fluid injection nozzle injects diesel exhaust fluid directly into the inlet opening of the partial spiral flow passage.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianwen Li, Chijou Wang, Rahul Mital, Luciano Nunziato Di Perna, James B. Rodgers
  • Publication number: 20170321590
    Abstract: An engine exhaust system includes an exhaust pipe assembly having an engine exhaust system inlet configured to receive engine exhaust and an engine exhaust system outlet. The system includes a first selective catalytic reduction (SCR) catalyst device positioned downstream in exhaust flow from the engine exhaust system inlet. The first SCR catalyst device includes a substrate with a metallic catalyst coated on the substrate. An electric heater is configured to heat the metallic catalyst. A second SCR catalyst device is positioned downstream in engine exhaust flow from the first SCR catalyst device and upstream of the engine exhaust system outlet. The first SCR catalyst device and the exhaust pipe assembly define an empty chamber between the substrate and the second SCR catalyst device. Engine exhaust flows directly from the substrate to the second SCR catalyst device through the empty chamber.
    Type: Application
    Filed: May 3, 2016
    Publication date: November 9, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Luciano Nunziato Di Perna, Raffaello Ardanese, Michael J. Paratore, JR., Rahul Mital, Jianwen Li
  • Patent number: 9732660
    Abstract: An integrated sensor-catalyst is disclosed for an after-treatment (AT) system used to filter an exhaust gas flow emitted by an internal combustion engine. The integrated sensor-catalyst includes a sensor element configured to detect a parameter of the exhaust gas flow. The integrated sensor-catalyst also includes a micro-catalyst element configured to filter a pollutant from the exhaust gas flow. Additionally, the integrated sensor-catalyst includes a housing configured to hold the sensor element and the micro-catalyst element and fix the micro-catalyst element relative to the sensor element such that the micro-catalyst element is arranged and maintained in the exhaust gas flow upstream of the sensor element. A vehicle including such an AT system with the integrated sensor-catalyst is also disclosed.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 15, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Luciano Nunziato Di Perna, Jianwen Li, Charles E. Dean, Rahul Mital, David B. Brown
  • Patent number: 9714597
    Abstract: A mixer includes a plurality of blades extending along a longitudinal axis. The blades are arranged in a single row, and are axially spaced from each other along a transverse axis. Each of the blades defines a window. Each of the blades includes an upstream portion, and a downstream portion. Each of the blades includes a bend at the window that forms an interior blade angle between its respective upstream portion and its respective downstream portion. The single row of the blades is arranged to include a first group of blades and a second group of blades. The interior blade angle of each of the blades in the first group faces in a first axial direction along the transverse axis. The interior blade angle of each of the blades in the second group faces in a second axial direction along the transverse axis.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 25, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Rahul Mital, Anil Yadav, Jianwen Li, Amit Prabhakar, Claudio Ciaravino
  • Patent number: 9689290
    Abstract: An after-treatment (AT) system for a flow of exhaust gas of an internal combustion engine includes a first AT device and a second AT device in fluid communication with and positioned in the exhaust gas flow downstream of the first AT device. The AT system also includes an exhaust passage configured to carry the exhaust gas flow from the first AT device to the second AT device. The AT system additionally includes an injector configured to introduce a reductant into the exhaust passage. The second AT device includes an inlet cone having a volute defining a spiral primary path for the exhaust gas flow into the second AT device and configured to generate a swirling motion of and turbulence in the exhaust gas flow. A vehicle employing the AT system is also disclosed.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: June 27, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Jianwen Li, Luciano Nunziato Di Perna, Rahul Mital, Roberto Argolini, Joshua Clifford Bedford
  • Publication number: 20170159532
    Abstract: A mixer includes a plurality of blades extending along a longitudinal axis. The blades are arranged in a single row, and are axially spaced from each other along a transverse axis. Each of the blades defines a window. Each of the blades includes an upstream portion, and a downstream portion. Each of the blades includes a bend at the window that forms an interior blade angle between its respective upstream portion and its respective downstream portion. The single row of the blades is arranged to include a first group of blades and a second group of blades. The interior blade angle of each of the blades in the first group faces in a first axial direction along the transverse axis. The interior blade angle of each of the blades in the second group faces in a second axial direction along the transverse axis.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 8, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Rahul Mital, Anil Yadav, Jianwen Li, Amit Prabhakar, Claudio Ciaravino
  • Publication number: 20170152786
    Abstract: An integrated sensor-catalyst is disclosed for an after-treatment (AT) system used to filter an exhaust gas flow emitted by an internal combustion engine. The integrated sensor-catalyst includes a sensor element configured to detect a parameter of the exhaust gas flow. The integrated sensor-catalyst also includes a micro-catalyst element configured to filter a pollutant from the exhaust gas flow. Additionally, the integrated sensor-catalyst includes a housing configured to hold the sensor element and the micro-catalyst element and fix the micro-catalyst element relative to the sensor element such that the micro-catalyst element is arranged and maintained in the exhaust gas flow upstream of the sensor element. A vehicle including such an AT system with the integrated sensor-catalyst is also disclosed.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 1, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Luciano Nunziato Di Perna, Jianwen Li, Charles E. Dean, Rahul Mital, David B. Brown
  • Patent number: D829243
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 25, 2018
    Assignee: FOSHAN SHUNDE KEBO MACHINERY MANUFACTURING CO., LTD.
    Inventor: Jianwen Li