Patents Examined by Dapinder Singh
  • Patent number: 10316720
    Abstract: A reducing agent is supplied to an NOx selective catalytic reduction catalyst in a suitable manner, while suppressing NOx from being produced by oxidation of ammonia in the NOx catalyst. In cases where the temperature of the NOx catalyst is equal to or higher than a predetermined temperature at which ammonia is oxidized, an amount of the reducing agent to be supplied to the NOx catalyst is made larger, when an air fuel ratio of exhaust gas flowing into the NOx catalyst is small, than it is large.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: June 11, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Arifumi Matsumoto
  • Patent number: 10316719
    Abstract: A method and a control assembly for operating an exhaust gas system of a motor vehicle is disclosed. Measuring values are evaluated, which indicate a content of nitrogen oxides in an exhaust gas downstream of a catalytic device. The catalytic device is adapted to diminish the content of nitrogen oxides in the exhaust gas produced by an engine of the motor vehicle. Based on the measuring values a quality of a reducing agent supplied to the catalytic device is assessed. The method includes determining whether reducing agent has been filled into a storage tank. A plurality of measuring values is captured during a predetermined period of time, and a magnitude and a frequency of the plurality of measuring values are taken into account to assess the quality of the reducing agent.
    Type: Grant
    Filed: June 20, 2015
    Date of Patent: June 11, 2019
    Assignee: Daimler AG
    Inventors: Zhiping Han, Bryant Pham, Justin Kosik, Charles-Benoit Chaumette
  • Patent number: 10316754
    Abstract: A heat exchanger manifold for a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a manifold body extending between a first face and a second face, a first seal land defining a first fluid port extending through the manifold body between the first face and the second face, and a first seal received within the first fluid port.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 11, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: William Meyst, Andre Herman Troughton, Brian J. Breslin, Jesse Ian Berube, Christopher Durkee, David A. Welch
  • Patent number: 10301990
    Abstract: Methods and systems are provided for an exhaust gas aftertreatment system. In one example, a method may include limiting ammonia desorption from a catalyst in response to an increase in driver demand by activating an electric motor.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: May 28, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Monika Angst, Christoph Boerensen, Dirk Roemer, Frank Linzen, Brendan Carberry, Felix Goebel, Evgeny Smirnov
  • Patent number: 10301991
    Abstract: Methods and systems are provided for diagnosing an electric heater configured to increase a temperature of an exhaust catalyst positioned in an exhaust system of an engine. In one example, a method comprises diagnosing the electric heater by activating the electric heater, routing air flow from the exhaust system to an intake of the engine, and indicating the electric heater is degraded based on a test temperature in the intake being below a threshold temperature. In this way, the electric heater may be diagnosed without inclusion of costly sensors in the exhaust catalyst, and where such diagnosis conducted periodically may reduce release of undesired emissions to atmosphere.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: May 28, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed Dudar
  • Patent number: 10302035
    Abstract: An internal combustion engine comprises: an exhaust purification catalyst; a downstream side air-fuel ratio sensor which is arranged at a downstream side of the exhaust purification catalyst; and an air-fuel ratio control system which performs feedback control so that the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst becomes a target air-fuel ratio.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: May 28, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shuntaro Okazaki
  • Patent number: 10302034
    Abstract: One exemplary embodiment is a method of operating a system comprising an internal combustion engine system, and an exhaust aftertreatment system comprising an SCR catalyst, and an electronic control system. The method comprises operating the electronic control system to perform the acts of determining a predicted temperature value indicative of a predicted future temperature of the SCR catalyst, determining a temperature profile value using the predicted temperature value and a current temperature value indicative of a current temperature of the SCR catalyst, operating a controller to provide an output indicating a difference between the temperature profile value and a temperature target, determining a heat request using the output of the controller, filtering the heat request using a prediction horizon, and controlling operation of the engine system using the filtered heat request to increase a temperature of the SCR catalyst.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 28, 2019
    Assignee: Cummins Inc.
    Inventors: Adam W. Kidd, Hoseinali Borhan, Bibin N. Pattel, Edmund P. Hodzen, Michael Haas, Jeffrey Diwakar Abraham, Bryon D. Staebler
  • Patent number: 10288004
    Abstract: A direct injection diesel engine is provided with a fuel injection nozzle which is capable of performing a multistage injection. In a middle-or-high load region, in order to reduce soot, an after-injection is performed immediately after a main injection. An injection timing of the after-injection is set from a map in accordance with a driving condition. During a transient time, the injection timing of the after-injection is corrected on a basis of a difference ?P between an actual rail pressure rPrail and a target rail pressure tPrail. In a case where the injection timing after the correcting is more retardation angle side than a threshold value, the after-injection is inhibited.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: May 14, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Isshou Uehara
  • Patent number: 10288014
    Abstract: A method for operating an internal combustion engine is provided. The method includes closing an EGR valve positioned in an exhaust gas recirculation (EGR) conduit downstream of an EGR cooler, the EGR conduit coupled to an intake system and an exhaust system and determining a profile of exhaust pressure waves in the exhaust system. The method also includes adjusting a volume of variable volume vessel based on the profile of the exhaust pressure waves, the variable volume vessel positioned downstream of the EGR cooler and upstream of the EGR valve.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 14, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Andreas Kuske, Hans Guenter Quix, Franz Arnd Sommerhoff, Joerg Kemmerling, Vanco Smiljanovski, Helmut Matthias Kindl, Hanno Friederichs
  • Patent number: 10287945
    Abstract: A method for increasing the exhaust temperature of an exhaust system. The method includes receiving an inlet temperature of a selective catalytic reduction system; determining whether the inlet temperature meets a temperature setpoint; adjusting an exhaust manifold pressure setpoint based on the determination of the inlet temperature; determining whether the exhaust manifold pressure of at least one of first or second bank meet the exhaust manifold pressure setpoint; and causing an adjustment of an effective flow area of at least one of the first bank or second bank based on the exhaust manifold pressure, the adjustment of the effective flow area structured to increase exhaust temperature during light load operation.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 14, 2019
    Assignee: Cummins, Inc.
    Inventors: Travis Alva Anderson, Joan M. Wills, Rajkumar Subramanian, Vaibhav Daramwar, Pagalavan Mathari Bakthavatsalam, Paul Daniel Borisuk
  • Patent number: 10280856
    Abstract: An exhaust treatment catalyst (13) arranged in an engine exhaust passage and a heat and hydrogen generation device (50) are provided. The amount of fuel fed to the heat and hydrogen generation device (50), which is required for making the temperature of the exhaust treatment catalyst (13) rise by exactly a predetermined temperature rise by heat and hydrogen fed from the heat and hydrogen generation device (50) when the exhaust treatment catalyst (13) is not poisoned and does not thermally deteriorate, is calculated based on the amount of exhaust gas. When fuel of the reference feed fuel amount corresponding to the amount of exhaust gas is fed to the heat and hydrogen generation device (50) and the temperature rise of the exhaust treatment catalyst (13) fails to reach the predetermined temperature rise, the treatment for restoration from poisoning of the exhaust treatment catalyst (13) is performed.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 7, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kiyoshi Fujiwara, Shinichi Takeshima, Hiromasa Nishioka
  • Patent number: 10280808
    Abstract: A Rankine cycle system includes a boiler configured to apply waste heat to refrigerant circulating in an internal-combustion engine to vaporize the refrigerant; a gas-liquid separator configured to separate gas-liquid two-phase refrigerant, sent from the boiler, into gas phase fluid and liquid phase fluid; a superheater configured to superheat the gas phase fluid, sent from the gas-liquid separator, through heat exchange with exhaust gas of the internal-combustion engine; an expander configured to expand the gas phase fluid, passing through the superheater, to recover thermal energy, and a condenser configured to condense the gas phase fluid, passing through the expander, to return the gas phase fluid to liquid phase fluid. The gas-liquid separator is connected to the internal combustion engine via a refrigerant pipe. The internal combustion engine is fixed onto an engine mount of a vehicle. The gas-liquid separator is fixed to the internal combustion engine via a bracket.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 7, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Manabu Tateno
  • Patent number: 10273855
    Abstract: A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: April 30, 2019
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Lawrence J. Noren, IV, Daniel J. Owen, Jeffrey W. Denton, Attila Kovacs, Eric A. Hein, Meng-Huang Lu, Manoj K. Sampath
  • Patent number: 10273846
    Abstract: The disclosure relates to an electric exhaust-gas catalytic converter that has a heating device. The heading device includes a first heating element and a second heating element that are arranged separately from one another upstream and downstream of an active catalysis region of the electric exhaust-gas catalytic converter. The disclosure also relates to a vehicle which includes the electric exhaust-gas catalytic converter and to a method for operating the electric exhaust-gas catalytic converter.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 30, 2019
    Assignee: Continental Automotive GmbH
    Inventors: Simon Baensch, Thomas Knorr
  • Patent number: 10273909
    Abstract: Provided is a catalytic converter to be disposed in a branch portion between an exhaust gas passage that guides exhaust gas from an internal combustion engine to outside and an exhaust gas recirculation passage that recirculates a portion of the exhaust gas from the exhaust gas passage to an intake system of the internal combustion engine. The catalytic converter comprises a catalyst storage case that stores a catalyst, a recirculation pipe that forms the exhaust gas recirculation passage, an abutment portion that makes the catalyst storage case and the recirculation pipe be in surface contact with each other and be arranged in parallel to each other, and a downstream cone that makes the exhaust gas passage and the exhaust gas recirculation passage merge with each other.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: April 30, 2019
    Assignee: Futaba Industrial Co., Ltd.
    Inventor: Katsuhisa Takagi
  • Patent number: 10267192
    Abstract: An exhaust purification system of an internal combustion engine comprising an exhaust treatment catalyst (13) arranged in an engine exhaust passage and a heat and hydrogen generation device (50) able to feed only heat or heat and hydrogen to the exhaust treatment catalyst (13). When the warm-up operation of the heat and hydrogen generation device (50) is completed and a reforming action by a reformer catalyst (54) becomes possible, if the temperature of the exhaust treatment catalyst (13) is a preset activation temperature or more, a partial oxidation reaction is performed at the heat and hydrogen generation device (50) and the generated heat and hydrogen are fed to the exhaust treatment catalyst (50). At this time, if the temperature of the exhaust treatment catalyst (13) is less than the preset activation temperature, a complete oxidation reaction by a lean air-fuel ratio is continued and a heat is fed to the exhaust treatment catalyst (13).
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: April 23, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinichi Takeshima, Hiromasa Nishioka, Kiyoshi Fujiwara
  • Patent number: 10267255
    Abstract: An internal combustion engine comprises an exhaust purification catalyst and a downstream side air-fuel ratio sensor which is arranged at a downstream side of the exhaust purification catalyst. A control system can perform fuel cut control which stops the feed of fuel to the internal combustion engine during operation of the internal combustion engine, and, after the end of fuel cut control, performs post-return rich control which sets the exhaust air-fuel ratio to a rich air-fuel ratio.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 23, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shuntaro Okazaki
  • Patent number: 10267208
    Abstract: A cooling structure of an engine includes a cylinder head and a coolant temperature sensor. The cylinder head gas a first water jacket for cooling a combustion chamber and a second water jacket for cooling an exhaust manifold. The cylinder head includes a joining portion where coolants from the first water jacket and the second water jacket join together. The joining portion has a first coolant passage. A second coolant passage is disposed downstream of the joining portion. The temperature sensing portion is disposed in the second coolant passage. A coolant outlet of the second water jacket is defined in the first coolant passage, and is located at a position on the cylinder head cover attachment surface side in the first coolant passage. The temperature sensing portion is located at a position on the cylinder block attachment surface side in the second coolant passage.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: April 23, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahito Kudo, Takashi Matsutani
  • Patent number: 10260439
    Abstract: A control apparatus for an internal combustion engine executes a detection process upon satisfaction of all detection preconditions including a stopped condition that a temperature-increasing process has been stopped; determines Whether all the detection preconditions except the stopped condition are satisfied, during the temperature-increasing process; executes a gradually-changing-and-stopping process of stopping the temperature-increasing process by gradually changing the air-fuel ratios in the cylinders to a target air-fuel ratio set based on an operation state of the internal combustion engine after stop of the temperature-increasing process, when a negative determination is made and a temperature-increasing process stop request has been issued; and executes a promptly-stopping process of stopping the temperature-increasing process by changing the air-fuel ratios in the cylinders to the target air-fuel ratio within a shorter time period than that of the gradually-changing-and-stopping process, when an af
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kazuki Tsuruoka
  • Patent number: 10260394
    Abstract: An auto-calibration controller configured to automatically tune a dosing unit of an aftertreatment system. The auto-calibration controller is configured to command the dosing unit to dose reductant at a first dosing command rate at a first input pressure value based on a dosing command value of a dosing command table. The auto-calibration controller is further configured to interpret a parameter indicative of an actual amount of dosed reductant by the dosing unit and compare the actual amount of dosed reductant to an expected amount of dosed reductant. The auto-calibration controller is further configured to update the dosing command value of the dosing command table of a control module of the aftertreatment system responsive to the comparison of the actual amount of dosed reductant to the expected amount of dosed reductant.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: April 16, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Patrick C. Hudson, Nassim Khaled