Engine Fuel, Air, Or Ignition Controlled By Sensor Of Reactor Condition Patents (Class 60/285)
  • Patent number: 11008966
    Abstract: A method is provided for determining a position of at least one actuator of an internal combustion engine arrangement, the method including the steps of: receiving parameter values for engine performance parameters of the internal combustion engine arrangement at a first point in time; predicting at least one engine performance parameter value at an at least one second, future point in time; and determining an actuator position for the at least one actuator by an optimization using the parameter values at the first point in time and at the at least one second point in time as input.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: May 18, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Esteban Gelso, Johan Dahl
  • Patent number: 10982604
    Abstract: An engine system is provided with an electronic throttle device to regulate intake amount to the engine, an EGR device (EGR valve) to recirculate a part of exhaust gas of the engine to the engine as EGR gas, and an electronic control unit (ECU) to control the electronic throttle device and the EGR valve based on an operating state of the engine. The ECU performs feedback control of the electronic throttle device such that a detected engine rotation number becomes a target idle rotation number, and sets the target idle rotation number to a predetermined first set value for avoiding engine stall until a predetermined time elapses from start of deceleration and then shifts the target idle rotation number to a second set value lower than the first set value after the predetermined time elapses.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 20, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Masanao Kurita, Masateru Nagao
  • Patent number: 10975779
    Abstract: An engine system includes a throttle device, an EGR valve, and an ECU. The ECU diagnoses foreign-matter lodging abnormality of the EGR valve and the foreign-matter diameter based on intake pressure. When the existence of the abnormality and the foreign-matter diameter are determined, the ECU calculates a difference between a foreign-matter diameter and a predetermined learning determination value as a foreign-matter diameter difference. If this difference is larger than an abnormality determination value, the foreign-matter diameter is judged to be excessive and the throttle device is controlled to avoid engine stall. If the foreign-matter diameter difference is equal to or larger than a normality determination value and also equal to or less than the abnormality determination value, engine deceleration is continued. If the foreign-matter diameter difference is less than the normality determination value, the foreign-matter diameter is judged to be minute and the learning determination value is updated.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 13, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Masanao Kurita, Masateru Nagao
  • Patent number: 10954839
    Abstract: The present invention relates to a method for correcting a supply of additive to an exhaust gas stream resulting from combustion in an internal combustion engine. A first aftertreatment component being arranged for oxidation of nitric oxide into nitrogen dioxide, and a reduction catalytic converter being arranged downstream said first aftertreatment component. Additive is supplied to said exhaust gas stream for reduction of nitrogen oxides in said reduction catalytic converter, the additive being supplied in proportion to an occurrence of nitrogen oxides in said exhaust gas stream, said proportion being subject to correction. The method includes: supplying unburned fuel to said exhaust gas stream upstream said first aftertreatment component to reduce oxidation of nitric oxide into nitrogen dioxide in said first aftertreatment component, and correcting said supply of additive to said exhaust gas stream when supplying unburned fuel to said exhaust gas stream.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 23, 2021
    Assignee: Scania CV AB
    Inventors: Mikael Lundström, Ola Stenlåås
  • Patent number: 10941726
    Abstract: Torque fluctuations caused by misfire and abnormal combustion are prevented appropriately at the time of switching from SI to HCCI, and exhaust of NOx is restricted at the time of switching. Provided is a control apparatus for an internal combustion engine performing a plurality of combustion modes each having a different air-fuel ratio and compression end temperature in a cylinder 7 from each other. In the middle of switching from a first combustion mode to a second combustion mode, an intermediate combustion mode in which the compression end temperature is increased while keeping a different air-fuel ratio from the air-fuel ratio of the first combustion mode and the air-fuel ratio of the second combustion mode is performed.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: March 9, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shogo Namba, Masayuki Saruwatari, Kazuhiro Oryoji
  • Patent number: 10941689
    Abstract: A method for the exhaust gas aftertreatment of a combustion engine having an exhaust system in which at least three catalytic converters and at least three lambda probes are disposed. Downstream of a first catalytic converter, an actively heatable catalytic converter is provided, which is actively heated at a start of the combustion engine. The lambda control of the combustion engine is carried out in each case by that lambda probe disposed downstream of the respective last catalytic converter to reach the light-off temperature thereof. Also, an exhaust gas aftertreatment system for implementing such a method.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 9, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna, Michael Manz, Michael Kaack
  • Patent number: 10934918
    Abstract: The present disclosure describes a catalytic aftertreatment system that includes a dosing compartment including a doser configured to introduce a diesel exhaust fluid (DEF) including urea into a diesel exhaust; a mixing chamber subsequent to the doser configured to mix the DEF with the diesel exhaust, the mixing chamber including an optional static metallic mixer, and a catalyst substrate including a combined urea hydrolysis-selective catalytic reduction binary catalyst coated thereon; and a SCR unit subsequent to the mixing chamber unit, including an SCR catalyst configured to facilitate reduction of nitrogen oxide (NOx) in the diesel exhaust with NH3.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: March 2, 2021
    Assignee: PACCAR INC
    Inventors: Randal A. Goffe, Jacob A. Wall
  • Patent number: 10907561
    Abstract: An estimation device is applicable to a combustion system including an internal combustion engine. The estimation device includes a mixing acquisition unit, a combustion amount estimation unit, and a region estimation unit. The mixing acquisition unit acquires the mixing ratio of various components contained in the fuel used for combustion in the internal combustion engine. The combustion amount estimation unit estimates a main combustion amount of the fuel caused by a main combustion produced by injecting the fuel into a combustion chamber of the internal combustion engine with a main injection, based on the mixing ratio acquired by the mixing acquisition unit. The region estimation unit estimates a combustion region of the main combustion in the combustion chamber based on the mixing ratio acquired by the mixing acquisition unit.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shinya Hoshi, Atsunori Okabayashi
  • Patent number: 10871115
    Abstract: When atmospheric pressure (Pa) which varies according to altitude is higher than a predetermined pressure threshold (Path) during idle operation in which catalyst warm-up request is issued, an intake pressure is controlled, through a throttle valve (19), to an intake pressure at which an intake air amount required to promote the warm-up of a catalyst converter (26) is obtained. When the atmospheric pressure (Pa) is lower than the predetermined pressure threshold (Path), the intake pressure is controlled, through a throttle valve (19), to an intake pressure (Pa?Pb) at which a differential pressure (Pb) required by a brake booster (8) is obtained. Accordingly, negative pressure in the brake booster (8) can be secured while promoting the warm-up of the catalyst during the idle operation.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 22, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Atsushi Maekawa, Kenji Suzuki, Kentaro Yamano, Takeshi Miyamoto, Tomoki Itou, Taichi Andou, Toshio Hashimoto, Akio Ashikaga
  • Patent number: 10859021
    Abstract: An air fuel ratio control apparatus controls an air fuel ratio of an internal combustion engine. The apparatus includes an upstream sensor measuring the air fuel ratio of exhaust gas in an exhaust passage at an upstream side of a purification catalyst; a downstream sensor measuring the air fuel ratio of the exhaust gas in the exhaust passage at a downstream side of the purification catalyst; and a control unit that adjusts an amount of fuel supplied to the internal combustion engine, thereby controlling the air fuel ratio measured at the upstream sensor to be a target air fuel ratio. The control unit performs a calibration control where a calibration value corresponding to the air fuel ratio deviation is added to or subtracted from the target air fuel ratio such that the air fuel ratio deviation approaches zero.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: December 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoshihisa Ono, Hiroshi Suzuki
  • Patent number: 10859018
    Abstract: A method of purifying exhaust gas discharged from an engine using a three-way catalyst may include: calculating, by a controller, an oxygen mass flow rate flowing into the three-way catalyst based on an air-fuel ratio and an exhaust gas flow rate measured by a front oxygen sensor arranged at a front end of the three-way catalyst; calculating, by the controller, an oxygen storage capacity (OSC) and an oxygen storage amount (OSA) of the three-way catalyst by integrating the oxygen mass flow rate; correcting, by the controller, the calculated oxygen storage amount based on an actual voltage measurement value of the exhaust gas measured by a rear oxygen sensor arranged at a rear end of the three-way catalyst; and controlling, by the controller, a control variable related to performance of the three-way catalyst based on the corrected oxygen storage amount and the oxygen storage capacity.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: December 8, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dong-Hoon Lee, Pyung-Hyun Han, Ki-Joon Lee
  • Patent number: 10851732
    Abstract: The controller includes a fuel amount control unit adjusting amount of fuel supplied to a cylinder through feedback control with an air-fuel ratio deviation as input, a target air-fuel ratio adjustment unit alternately repeating a lean period process and a rich period process, and a learning value correction unit updating a learning value to compensate for a steady deviation in an air-fuel ratio. If an absolute value of an oxygen amount deviation is less than a determination value, the learning value update unit updates a learning value only when one of the lean period process and the rich period process is switched to the other one. If the absolute value of the oxygen amount deviation is greater than or equal to the determination value, the learning value is updated both when one of the processes is switched to the other one and when the switching is reversed.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: December 1, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Inoshita, Norihisa Nakagawa
  • Patent number: 10837336
    Abstract: A control apparatus (12): creates a torque correction table indicating a relationship between a change rate of an intake air amount, a change of the main injection amount and the main injection timing of a fuel injection apparatus (8) in the torque value of a diesel engine (1) in a lean state; measures an intake air amount in a rich state by using an MAF sensor (11); calculates a change rate of the measured intake air amount for the intake air amount in the lean state; obtains a correction value of the main injection amount and a correction value of the main injection timing of the fuel injection apparatus (8) based on the calculated change rate and the torque correction table; and performs an injection of the fuel in the rich state at the main injection amount and the main injection timing, corrected by the respective correction values.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 17, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Daiji Nagaoka, Takayuki Sakamoto
  • Patent number: 10823640
    Abstract: A misfire detection device for an internal combustion engine includes processing circuitry. The internal combustion engine includes a selective reduction type catalyst configured to remove NOx from an exhaust gas, an addition valve arranged upstream of the catalyst to add a reducing agent into the exhaust gas, and a NOx concentration sensor arranged downstream of the catalyst to detect a downstream concentration, that is, a NOx concentration in the exhaust gas downstream of the catalyst. The processing circuitry is configured to execute an addition process adding the reducing agent into the exhaust gas with operation of the addition valve and a determination process determining that a misfire has occurred in the internal combustion engine when a detection value of the downstream concentration is decreased on condition that the addition process is being executed.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shinya Asaura
  • Patent number: 10815860
    Abstract: A method for monitoring a nitrogen oxide storage catalyst in an exhaust system of an internal combustion engine, in which a reduction of nitrogen oxides is carried out by means of a reducing agent is disclosed. During a regeneration of the nitrogen oxide storage catalyst, the following steps are carried out: A measurement is carried out, from which a slip rate of the reducing agent not absorbed in the nitrogen oxide storage catalyst is ascertained. In addition, at least one expected value for the slip rate of the reducing agent is ascertained from at least one model. Subsequently, a computation of a monitoring variable is carried out by means of the slip rate of the reducing agent ascertained from the measurement and the at least one expected value for the slip rate of the reducing agent. Finally, a diagnosis of the storage capacity of the nitrogen oxide storage catalyst is carried out on the basis of the monitoring variable.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: October 27, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Pfister, Cornelia Nagel, Herbert Schoemig
  • Patent number: 10815912
    Abstract: A reformer system may include a reformer device having a fuel inlet, an air inlet and a gas outlet, a first valve set coupled to the fuel inlet and configured to selectively supply a reformer fuel flow from an engine fuel flow to the fuel inlet, a second valve set coupled to the air inlet and configured to selectively supply a reformer air flow from a compressor outlet air flow to the air inlet, and a controller in electrical communication with the first valve set and the second valve set. The controller may determine a target reformer fuel flow based on a target gas flow, determine a target reformer air flow based on the reformer fuel flow and a target air-to-fuel ratio, adjust the reformer fuel flow according to the target reformer fuel flow, and adjust the reformer air flow according to the target reformer air flow.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: October 27, 2020
    Assignee: Caterpillar Inc.
    Inventors: Deepti Bhosekar, Venkat Vijay Kishore Turlapati, Brett A. Zook, Andrew J. Loetz
  • Patent number: 10808588
    Abstract: An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. NH3 generation in the ammonia production catalyst module is changed according to a temperature and a temperature change rate of the SCR catalyst.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 20, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nahm Roh Joo, ChangHo Jung, Chang Hwan Kim, Dohyung Kim
  • Patent number: 10801427
    Abstract: A hybrid vehicle may include an engine; a turbocharger including a turbine disposed in an exhaust line and a compressor; an electric supercharger disposed in the intake line at an upstream portion of the compressor; an exhaust gas post processing apparatus; a low pressure EGR device which includes a low pressure EGR line, a low pressure EGR cooler and a low pressure EGR valve; an intake bypass line which connects the intake line at a downstream portion of the electric supercharger and the intake line at an upstream portion of the electric supercharger; an intake bypass valve disposed in the intake bypass line; a post processing bypass line which connects the intake line between the electric supercharger and the compressor and the exhaust line between the turbine and the exhaust gas post processing apparatus; and a post processing bypass valve disposed in the post processing bypass line.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: October 13, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Kyoungchan Han, Seungeun Yu
  • Patent number: 10794311
    Abstract: The invention relates to a method for adjusting a fuel/air ratio of an internal combustion engine (10), comprising a catalyst volume (26) with a first catalyst partial volume (26.1) and a second catalyst partial volume (26.2). The second catalyst partial volume (26.2) is arranged downstream from the first catalyst partial volume (26.1). An actual filling level of an exhaust gas constituent in the catalyst volume (26) is calculated from operating parameters of the internal combustion engine (10) and the exhaust system (14) using a computing model, and is adjusted to a nominal value by modifying the fuel/air ratio. The adjustment is carried out first for the second catalyst partial volume (26.2) and only later for the first catalyst partial volume (26.1).
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: October 6, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Kersten Wehmeier, Michael Pfeil, Michael Fey
  • Patent number: 10794257
    Abstract: An auxiliary system with purge control automatically supplies diesel exhaust fluid (DEF) to an onboard DEF tank of a diesel engine to enable prolonged unattended operation. The system includes an auxiliary DEF tank, an auxiliary DEF supply line, a controller, a pump, an air inlet, and a three-way valve configured to switch the pump inlet between the auxiliary DEF tank and air. In response to low-level DEF, the pump delivers DEF through the supply line to replenish the onboard DEF tank. The controller may automatically calculate onboard DEF tank volume based on the delivered volume of DEF, and DEF level data received from an ECM, to enable replenishment control regardless of engine make and model. In response to high-level DEF, engine stoppage, or other system fault, the controller switches the valve to air and runs the pump for a predetermined time to purge DEF from the supply line. The auxiliary system may be skid-mounted, portable, and configured to supply DEF to multiple diesel engines.
    Type: Grant
    Filed: July 28, 2018
    Date of Patent: October 6, 2020
    Assignee: Multiquip Inc.
    Inventors: George Fell, Patrick Joseph Weaver
  • Patent number: 10787945
    Abstract: A dosing control unit (DCU) may receive operational information associated with a selective catalytic reduction (SCR) aftertreatment system. The DCU may generate a deposit prediction, associated with the SCR aftertreatment system, based on the operational information. The deposit prediction may include information that identifies a predicted size of a deposit in a dosing zone of a plurality of dosing zones associated with the SCR aftertreatment system. The deposit prediction may be generated using a deposit growth model associated with predicting sizes of deposits in the plurality of dosing zones. The DCU may select a dosing scheme, of a plurality of dosing schemes, based on the deposit prediction. The DCU may implement the selected dosing scheme in order to cause diesel exhaust fluid (DEF) to be dosed in the plurality of dosing zones in accordance with the selected dosing scheme.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: September 29, 2020
    Assignee: Caterpillar Inc.
    Inventors: Dustin I. Landwehr, Jay Venkataraghavan
  • Patent number: 10781765
    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 flow meter which detects an amount of intake air. The control system of the internal combustion engine controls the exhaust air-fuel ratio to a target air-fuel ratio by feedback control, sets the target air-fuel ratio at a lean air-fuel ratio when the output air-fuel ratio of the downstream side air-fuel ratio sensor becomes a rich air-fuel ratio, and sets the target air-fuel ratio at a rich air-fuel ratio when the output air-fuel ratio of the downstream side air-fuel ratio sensor becomes a lean air-fuel ratio.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: September 22, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koichi Hoshi, Norihisa Nakagawa, Shuntaro Okazaki, Yuji Yamaguchi
  • Patent number: 10753294
    Abstract: Methods and systems are provided for reducing carbon buildup in an exhaust gas recirculation system of an engine of a vehicle. In one example, a method comprises injecting a diesel exhaust fluid into an intake manifold of the engine, routing the diesel exhaust fluid into the exhaust gas recirculation system, and vaporizing the diesel exhaust fluid in the exhaust gas recirculation system. In this way, any carbon deposits associated with an exhaust gas recirculation valve and/or exhaust gas recirculation passage may be reduced, which may increase fuel economy and may reduce undesired emissions.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: August 25, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10753306
    Abstract: The exhaust gas purification system includes a catalyst having an NOx storage and reduction function, an EGR passage, and a controller configured to control combustion of the internal combustion engine. The controller is configured to switch the operation mode from the lean burn operation to the rich burn operation, when a request for execution of the rich burn operation is issued during the lean burn operation. The controller is configured to perform, when the request the execution of the rich burn operation is issued, an NOx-increasing process in which the combustion of the internal combustion engine is controlled so that an in-cylinder NOx amount is equal to or larger than a required in-cylinder NOx amount prior to switching to the rich burn operation.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: August 25, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daichi Imai, Toshihiro Mori
  • Patent number: 10737219
    Abstract: An exhaust gas purifying catalyst according to the present invention is provided with a base material 10 and a catalyst-coated layer 30. The catalyst-coated layer 30 is provided with a lower layer 34 and an upper layer 32. The upper layer 32 contains Rh and/or Pt as a noble metal catalyst. The lower layer 34 contains Pd as a noble metal catalyst. The lower layer 34 is provided with a front-stage lower layer 34a positioned on an upstream side and a rear-stage lower layer 34b positioned on a downstream side. The front-stage lower layer 34a is a Ce-free layer that does not contain a Ce-containing oxide. The rear-stage lower layer 34b is a Ce-containing layer that contains a Ce-containing oxide with a pyrochlore structure.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: August 11, 2020
    Assignee: Cataler Corporation
    Inventors: Takashi Onozuka, Kenichi Taki, Kyosuke Murakami
  • Patent number: 10724494
    Abstract: Internal combustion engine with a regulating device and at least one ignition device for igniting a fuel-air mixture in a piston/cylinder unit, whereby on the outlet side of the piston-cylinder unit, a turbocharger and a wastegate are provided, whereby via the wastegate an exhaust-gas turbine of the turbocharger can be flowed through, and whereby the exhaust-gas turbine drives a compressor arranged on the intake side of the piston-cylinder unit, whereby the regulating device, on detecting a predefined triggering condition, performs an adjustment of the ignition time and the opening degree of the wastegate, such that that the overall efficiency of the internal combustion engine is optimized, whereby the ignition time of the ignition device is brought by the regulating device to the optimal overall efficiency, and the opening degree of the wastegate is changed to provide the required output power of the internal combustion engine.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: July 28, 2020
    Assignee: INNIO Jenbacher GmbH & Co OG
    Inventors: Herbert Kopecek, Nikolaus Spyra, Josef Thalhauser
  • Patent number: 10711672
    Abstract: Methods and systems are provided for controlling and coordinating control of a post-catalyst exhaust throttle and an EGR valve to expedite catalyst heating. By closing both valves during an engine cold start, an elevated exhaust backpressure and increased heat rejection at an EGR cooler can be synergistically used to warm each of an engine and an exhaust catalyst. The valves may also be controlled to vary an amount of exhaust flowing through an exhaust venturi so as to meet engine vacuum needs while providing a desired amount of engine EGR.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: July 14, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, William Charles Ruona, Thomas G. Leone, Gopichandra Surnilla
  • Patent number: 10683823
    Abstract: A control device for an internal combustion engine performs feedback control so that the air-fuel ratio of the exhaust gas flowing into an exhaust purification catalyst becomes a target air-fuel ratio and switches the target air-fuel ratio to lean when an output air-fuel ratio of a downstream side air-fuel ratio sensor is judged rich and switches the target air-fuel ratio to rich when an output air-fuel ratio of the downstream side air-fuel ratio sensor is judged lean. The control device judges that the downstream side air-fuel ratio sensor has not become abnormal when the value of the excess/deficiency parameter from when switching the target air-fuel ratio to lean or rich to when the output air-fuel ratio of the downstream side air-fuel ratio sensor is judged rich or lean is larger than a predetermined limit value.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 16, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Go Hayashita
  • Patent number: 10648386
    Abstract: A process for optimizing a depollution of nitrogen oxides from the gases in an engine exhaust line carried out according to a selective catalytic reduction by injection of a quantity of reducing agent into the line makes it possible to monitor a setpoint of the amount of nitrogen oxides per second at the outlet of the line. A readjustment of the setpoint is made at each completion of successive running distance intervals determined by integration of the speed over a time interval that ends as soon as a predetermined target cumulative amount of carbon dioxide released is reached, an amount of nitrogen oxides at the outlet per kilometer traveled being calculated for each interval from a cumulative amount of nitrogen oxides measured at the outlet and compared with a target amount of nitrogen oxides per kilometer for the calculation of a deviation used for the readjustment of the setpoint.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: May 12, 2020
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventor: Steven Maertens
  • Patent number: 10626779
    Abstract: Methods and systems are provided for diagnosing operation of a catalyst in the presence of oxygen sensor degradation over a vehicle life cycle. The methods and systems described herein filter the output of one oxygen sensor according to a time constant of a different oxygen sensor so that determination of a catalyst index ratio is compensated for oxygen sensor degradation.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: April 21, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Andrew Bagnasco, Edward Fredericks, Mario Santillo
  • Patent number: 10612438
    Abstract: An exhaust purification apparatus for an internal combustion engine is provided with an NOx storage and reduction type catalyst in an exhaust passage. The NOx storage and reduction type catalyst comprises a base member, an upstream side coat layer arranged on the base member, and a downstream side coat layer arranged at a downstream side in the direction of exhaust flow from the upstream side coat layer. The upstream side coat layer does not include a Ce-containing oxide but includes a precious metal catalyst. The downstream side coat layer contains a Ce-containing oxide and precious metal catalyst. A length of the upstream side coat layer is a length of 5 to 62.5% of the total length of the upstream side coat layer and the downstream side coat layer, while the remaining part of the coat layer aside from the upstream side coat layer is the downstream side coat layer.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 7, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Nobusuke Kabashima
  • Patent number: 10605135
    Abstract: A method includes determining, by a controller, a total emissions amount from a plurality of engines; comparing, by the controller, the total emissions amount to a predetermined threshold, wherein the predetermined threshold includes an alert value, an adjustment value, and a deactivation value, the deactivation value being greater than the adjustment value, which is greater than the alert value; deactivating, by the controller, at least one engine in response to the total emissions amount being at or greater than the deactivation value; adjusting, by the controller, operation of at least one engine in the plurality of engines in response to the total emissions amount being at or greater than the adjustment value but less than the deactivation value; and providing, by the controller, an alert in response to the total emissions amount being at or greater than the alert value but less than the adjustment value.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: March 31, 2020
    Assignee: Cummins, Inc.
    Inventors: Christopher D. Adams, Brian K. Rout, Duane A. Kruer
  • Patent number: 10598100
    Abstract: A vehicular propulsion system, a vehicular fuel system and a method of operating an internal combustion engine. A separation unit that makes up a part of the fuel system includes one or more adsorbent-based chambers such that the separation unit may selectively receive and separate at least a portion of onboard fuel into octane-enhanced and cetane-enhanced fuel components. A supply tank includes three compartments where the first contains the onboard fuel, the second receives a vaporized adsorbate from the separation unit and condenses at least a part of it into one of an octane-rich fuel component or a cetane-rich fuel component, while the third may either store the condensed and enriched fuel component or help condense more of the vaporized adsorbate. The condensing takes place through heat exchange between the onboard fuel and the vaporized adsorbate that are present within the various compartments of the supply tank.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: March 24, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Esam Zaki Hamad, Eman AbdelHakim A. M. Tora, Amer A. Amer, Junseok Chang
  • Patent number: 10590880
    Abstract: After start-up of an internal combustion engine, a CPU divides a request injection amount, which is used to control the air-fuel ratio to a target value, into an amount of fuel injected by a port injection valve and an amount of fuel injected by a direct injection valve based on rotation speed and a load ratio. When the amount of fuel injected by the port injection valve changes from zero to greater than zero, the CPU decreases the actual fuel injection amount from the divided fuel injection amount then gradually increases to the divided fuel injection amount. When the amount of fuel injected by the port injection valve is gradually increased, the amount of fuel injected by the direct injection valve is increased from the divided fuel injection amount so that the request injection amount of fuel is injected by the port injection valve and the direct injection valve.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: March 17, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akihiko Higuchi, Tomohiro Nakano, Eiji Murase
  • Patent number: 10590881
    Abstract: An estimation device applicable to a combustion system having an internal combustion engine includes a mixing acquisition unit, a combustion amount estimation unit, a region estimation unit, and a timing estimation unit. The mixing acquisition unit acquires a mixing ratio of various components contained in fuel used for combustion in the internal combustion engine. The combustion amount estimation unit estimates a combustion amount of fuel caused by a post combustion generated by injecting fuel into a combustion chamber of the internal combustion engine by post injection, based on the mixing ratio acquired by the mixing acquisition unit. The region estimation unit estimates a combustion region of the post combustion in the combustion chamber based on the mixing ratio. The timing estimation unit estimates an ignition timing at which ignition occurs in the combustion chamber by the post injection based on the mixing ratio.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: March 17, 2020
    Assignee: DENSO CORPORATION
    Inventors: Atsunori Okabayashi, Shinya Hoshi
  • Patent number: 10590878
    Abstract: A system is provided for automatically shutting down an engine in response to the engine operating while in an enclosed space to prevent dangers associated with carbon monoxide accumulating in the enclosed space. The engine has an oxygen sensor in its exhaust that is configured to detect oxygen in the exhaust or ambient. A controller can be programmed to shut down the engine based on a determination that the engine is operating in a confined or enclosed space by analyzing a rate of change of the oxygen content in the exhaust or ambient, and compares the rate to a threshold. The shutdown may be commanded if the rate exceeds the threshold. In some embodiments, the shutdown may additionally be in response to a temperature of the ambient air or intake air increasing, which furthers the confidence of the determination that the engine is operating in a confined or enclosed space.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: March 17, 2020
    Assignee: ELECTROJET GLOBAL, LLC
    Inventors: Kyle E. E. Schwulst, Jesse Beeker
  • Patent number: 10584672
    Abstract: An engine starting system is provided which is used with a vehicle equipped with a gear driving starter which is energized to bring a pinion gear into engagement with a ring gear of an engine mounted in the vehicle and also to rotate the pinion gear to crank the engine. The engine starting system works to terminate energization of the starter after the starter is energized to start the engine. The engine starting system executes combustion control to control combustion of fuel in the engine so as to develop a first firing event where the fuel is first fired in the engine after the energization of the starter is terminated. This minimizes the gear noise when the engine is being cranked and ensures the stability in starting the engine.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: March 10, 2020
    Assignee: DENSO CORPORATION
    Inventors: Tatsuya Fujita, Mitsuhiro Murata
  • Patent number: 10502166
    Abstract: The invention relates to an exhaust gas conducting system for a gasoline engine, comprising an exhaust gas line which can be connected to an exhaust manifold of the gasoline engine, an inlet line which can be connected to an intake manifold of the gasoline engine, and a turbine which is arranged in the exhaust gas line.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: December 10, 2019
    Assignee: Tenneco GmbH
    Inventor: Michael Fischer
  • Patent number: 10494972
    Abstract: Methods and systems are provided for cleaning a urea-clogged diesel exhaust fluid (DEF) injector included in a selective catalytic reduction (SCR) engine exhaust after-treatment system. In one example, a method may include, responsive to a diagnostic code indicating a clogged DEF injector, operating an engine in a DEF injector cleaning mode comprising operating the engine at a high idle speed, activating a DEF pump to deliver a desired amount of DEF at a desired flowrate, and measuring a duty cycle of DEF pump activation during DEF delivery. Responsive to the duty cycle being greater than a threshold duty cycle for a duration, DEF flow restoration is indicated.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 3, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: James Smarr Collins, Robert James Merrell, Jonathan Matthew Green, Matthew Hargis, John Roberts
  • Patent number: 10480382
    Abstract: A method for detecting catalyst deterioration in a vehicle includes executing a fuel-cut mode of an engine of the vehicle according to a operating state of the vehicle; calculating an oxygen storage capacity (OSC) of a catalyst using an oxygen sensor during the executing of the fuel-cut mode of the engine; and calculating catalyst deterioration based on the calculated OSC.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 19, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong-Hoon Lee, Byung-Hoon Cho
  • Patent number: 10436137
    Abstract: A method for operating a drive device with a drive unit and an exhaust gas purification device. The gas exhaust purification device is provided with a catalytic converter through which an exhaust gas stream can flow, as well as with a first lambda sensor arranged upstream of the catalytic converter in the exhaust gas stream and with a second lambda sensor arranged downstream of the catalytic converter in the exhaust gas stream, wherein an oxygen filling value of an oxygen storage device of the catalytic converter is determined on the basis of a first lambda signal provided by the first lambda signal sensor as well as an offset value.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: October 8, 2019
    Assignee: AUDI AG
    Inventor: Bodo Odendall
  • Patent number: 10428753
    Abstract: An ECU avoids engine stall by putting a compressor into a stationary state in a case where the rotation speed of a crankshaft is equal to or less than a predetermined speed during an idle operation of an internal combustion engine. During the idle operation, the ECU calculates a total load torque applied to the crankshaft by the compressor and an alternator. The ECU calculates the maximum torque of the internal combustion engine during the idle operation based on a target speed during the idle operation. Then, the ECU raises the predetermined speed in a case where the value obtained by subtracting the load torque from the maximum torque is equal to or less than a predetermined value.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: October 1, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Atsushi Fukuda, Tomohiro Shinagawa
  • Patent number: 10415453
    Abstract: An active regeneration method for a gasoline particulate filter includes determining if a particulate filter soot load level is greater than a predetermined soot load level threshold and, if so, determining if the particulate filter's temperature is greater than a predetermined burn off temperature threshold. A particulate filter heating phase is initiated when the particulate filter's temperature is not greater than a predetermined burn off temperature threshold and a soot burning phase is started when the particulate filter's temperature is greater than a predetermined burn off temperature threshold.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: September 17, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Rafat F. Hattar, Alexander Michel, Simon Schiesser, Nils Oth, Markus Kraft
  • Patent number: 10392984
    Abstract: This NOx reduction control method is for an exhaust gas aftertreatment device having an oxidation catalyst and an LNT catalyst which are disposed in an exhaust pipe and repeating an adsorption or occlusion of NOx which is executed when an air-fuel ratio is in a lean state and a reduction of NOx which is executed when the air-fuel ratio is in a rich state, the method including executing a post-injection or an exhaust pipe injection and causing HC to be adsorbed in the oxidation catalyst when an exhaust gas temperature is low, and causing the HC which is adsorbed in the oxidation catalyst to be desorbed and reducing an adsorbed NOx in the LNT catalyst by raising the exhaust gas temperature during the rich state.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: August 27, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Daiji Nagaoka
  • Patent number: 10392986
    Abstract: An exhaust purification system includes a NOx reduction catalyst which is provided on an exhaust passage of an internal combustion engine, a SOx purging control module for executing a SOx purging control for restoring the NOx reduction catalyst from sulfur poisoning by increasing a temperature of the exhaust gas to a first target temperature at which SOx are desorbed through an injection system control to increase a fuel injection amount, a prohibition module for prohibiting an execution of the SOx purging control according to an operating state of the internal combustion engine, and a temperature retention mode control module for executing a temperature retention mode control for maintaining the temperature of the exhaust gas at a second target temperature which is lower than the first target temperature by controlling the fuel injection amount during a period of time during which the SOx purging control is prohibited.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: August 27, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka
  • Patent number: 10393043
    Abstract: A system and method for monitoring the temperature in a vehicle after-treatment system is provided. The system includes one or more temperature sensors positioned in the vehicle after-treatment system and an electronic control unit (ECU) configured by programming instructions encoded in computer readable media to execute a method. The method includes monitoring the temperature presented by the one or more temperature sensors, executing a lower oxygen combustion strategy for a slower exothermic reaction when the temperature exceeds a first threshold level, and deactivating the lower oxygen combustion strategy when the temperature drops below a second threshold level.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: August 27, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Andrea Pannuzzo, Andrea Dutto, Luca Gatti, Cristian Taibi
  • Patent number: 10392997
    Abstract: The present disclosure provides a method for operating an exhaust gas aftertreatment device for cleaning an exhaust gas flow of a motor vehicle with an internal combustion engine operated in normal mode with oxygen surplus. An oxygen store arranged downstream of an NOx storage catalyst of the exhaust gas aftertreatment device receives oxygen in normal mode, and during a regeneration mode emits oxygen for converting breakthrough hydrocarbons and/or carbon monoxide. The oxygen store is assigned to a particulate filter and/or an oxidation catalyst of the exhaust gas aftertreatment device. The particulate filter and/or the oxidation catalyst is arranged downstream of the NOx storage catalyst.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: August 27, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Jan Harmsen, Mario Balenovic
  • Patent number: 10378467
    Abstract: A control device for an internal combustion engine is provided with a target air-fuel ratio setting part including a first setting control part performing normal control alternately switching a target air-fuel ratio between a predetermined first lean air-fuel ratio and a predetermined first rich air-fuel ratio and a second setting control part performing control for restoration of the storage amount stopping normal control and increasing the oxygen storage amount of a second catalyst when an output air-fuel ratio of a third air-fuel ratio sensor becomes a predetermined rich judgment air-fuel ratio or less.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 13, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Inoshita, Shuntaro Okazaki, Yuji Miyoshi
  • Patent number: 10371035
    Abstract: The present invention concerns a method in connection with the supplying of a first additive for treating an exhaust gas stream resulting from combustion in a combustion engine, wherein said first additive is supplied to said exhaust gas stream, and wherein said first additive is utilized for the reduction of at least a first substance (such as NOx) present in said exhaust gas stream, wherein the method comprises: estimation of a reduction of said first substance based on a first measurement of a presence of said first substance in said exhaust gas stream downstream of said supply of said first additive, and a second measurement of a presence of said first substance in said exhaust gas stream upstream of said supply of additive, comparison of said estimated reduction to a first reduction, and correction of the estimation of said second measurement of said first substance based on said comparison.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: August 6, 2019
    Assignee: Scania CV AB
    Inventor: Christer Lundberg
  • Patent number: 10352231
    Abstract: In an upstream portion from a valve connecting surface that is formed in an opening of an intake port to a combustion chamber, an upper wall surface of the intake port continues from an upstream side end of the valve connecting surface and extends substantially straight and diagonally with respect to a ceiling surface on the intake port side. In addition, a cross-sectional shape of the portion in the intake port in a direction perpendicular to an axial direction of the intake port is a flat shape with an axis in a transverse direction being a long axis.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: July 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuyoshi Abe, Yasushi Yoshihara, Taketo Nagasaki, Nobuhiko Horie