Anti-pollution Patents (Class 60/274)
  • Patent number: 10416042
    Abstract: An exhaust emissions monitoring device includes a pipe adapted to mount to the tailpipe of a vehicle and includes a cable for connecting to the vehicle engine control unit (ECU) and power system. The pipe defines an internal flow passage to allow exhaust to flow through. A plurality of sensors is mounted on the pipe and each sensor extends through an access port formed on the pipe wall to be exposed to the internal flow passage. Exhaust properties and constituents are sensed by multiple sensors for each constituent, there are two or more sensors for each of NOx, temperature, ammonia, particulate matter. The sensors communicate data signals to a processor/data logger also mounted on the pipe.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: September 17, 2019
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Karl Tasik, Jeffrey Marley, Heath Morris
  • Patent number: 10408333
    Abstract: Methods and systems are provided for regulating the temperature of rear axle lubrication oil. In one example, a rear axle coolant system may include a coolant loop with a plurality of valves and sensors, regulating the coolant flow in heat exchange relationship with an exhaust gas heat recovery and storage system to deliver warm coolant to a rear axle heat exchanger to warm the rear axle lubrication oil. The method may regulate the components of the rear axle coolant system through a controller, receiving sensor input from the components of the coolant system.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: September 10, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Cary Cole, Sunil Katragadda, Phillip Bonkoski, David Karl Bidner, Michael Levin, Colby Jason Buckman, Danrich Henry Demitroff, Amey Y. Karnik, Furqan Shaikh
  • Patent number: 10408103
    Abstract: A engine exhaust system includes a diesel oxidation catalyst (DOC) configured to receive the engine exhaust gases, a first electric heater coupled to the DOC, and a selective catalytic reduction (SCR) device in fluid communication with the DOC. The engine exhaust system further includes a second electric heater coupled to the DOC, a power switch controller in electronic communication with the first electric heater and the second electric heater, and a single power source electrically coupled to the power switch controller, the first electric heater, and the second electric heater. The power switch controller includes a switch to control a power distribution between the first electric heater and the second electric heater as a function of time.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: September 10, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Yong Miao, Stefano Pellegrino
  • Patent number: 10400650
    Abstract: An SCR injection system for an internal combustion engine is disclosed. Under certain conditions, reductant fluid supplied by the system may form deposits in a reductant injector. In order to dissolve the deposits, a reductant supply line includes at least a portion with a downward slope that is disposed above a reductant inlet of the reductant injector. This allows reductant fluid in the sloped portion to flow to the reductant inlet due to gravity. Advantageously, a bent portion is provided between the reductant inlet and the sloped portion in order to trap reductant fluid that may flow back towards the reductant injector when the system is purged.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: September 3, 2019
    Assignee: Perkins Engines Company Limited
    Inventors: Siddharth Subhash Gharpure, Tom Carlill
  • Patent number: 10400692
    Abstract: A method for reducing the pollutant emissions in the exhaust gas in a start/catalytic converter heating phase of an internal combustion engine featuring externally supplied ignition and having at least one catalytic converter in an exhaust gas tract of the internal combustion engine, and for adapting a catalytic converter heating strategy to suitable state variables of the internal combustion engine and the catalytic converter as well as to the fuel quantity, the aging state and ambient conditions. The internal combustion engine is operated in a first phase of the start/catalytic converter heating phase using a lean air-fuel mixture in a range between a lambda value of 1.05 and at a lean misfire limit of the internal combustion engine that lies at a higher lambda value, and/or in a second phase of the start/catalytic converter heating phase, initially using a rich air-fuel mixture.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: September 3, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Jochen Hofstaetter, Volker Ricken
  • Patent number: 10399037
    Abstract: A nitrogen oxides (NOx) storage catalyst for treating an exhaust gas flow is provided. The NOX storage catalyst includes a flow-through substrate defining channels for receiving the exhaust gas flow and first and second zones present in the channels. The first zone includes a first NOX storage catalyst coating capable of storing NOX at a first adsorption temperature and releasing NOX at a first desorption temperature. The second zone includes a second NOX storage catalyst coating capable of storing NOX at a second adsorption temperature and releasing NOX at a second desorption temperature. The second desorption temperature is greater than the first desorption temperature. Methods of using the NOX storage catalyst for treating an exhaust gas stream flowing from a vehicle engine during a period following a cold-start of the engine are also provided.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: September 3, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei Wang, Shouxian Ren, Wei Li
  • Patent number: 10392981
    Abstract: The embodiments include: a NOx occlusion/reduction catalyst which is provided to an exhaust passage of an internal combustion engine, occludes NOx in exhaust when the exhaust is in a lean state, and reduces and purifies occluded NOx when the exhaust is in a rich state; a NOx purging control unit which, when the exhaust is in the rich state, executes NOx purging in which the NOx occluded in the NOx occlusion/reduction catalyst is reduced and purified; and a NOx-purging-prohibition processing unit which, when at least one of a plurality of prohibition conditions is fulfilled, prohibits execution of catalyst regeneration processing by the NOx purging control unit even if a catalyst-regeneration-processing start request has been issued, and, when one of the prohibition conditions is fulfilled during execution of the catalyst regeneration processing, invalidates the prohibition condition and allows continued execution of the catalyst regeneration processing by the NOx purging control unit.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 27, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka, Hiroyuki Yuza
  • Patent number: 10392985
    Abstract: An exhaust purification system includes: an NOx reduction type catalyst, which is provided in an exhaust system; a temperature acquisition unit, which acquires a catalyst temperature of the NOx reduction type catalyst; and a regeneration treatment unit, which executes a catalyst regeneration to recover an NOx purification capacity, wherein the regeneration treatment unit alternately executes a rich control, in which an exhaust air fuel ratio is set to a rich state to raise a temperature of the NOx reduction type catalyst to a predetermined target temperature, and a lean control, in which the exhaust air fuel ratio is set to a lean state to lower the temperature of the NOx reduction type catalyst, and sets an execution period of the lean control based on a deviation between the catalyst temperature acquired by the temperature acquisition unit during the previous rich control and the target temperature.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 27, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Masaaki Nishito, Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka, Tomohiro Korenaga
  • Patent number: 10393017
    Abstract: A system for providing auxiliary power in an aircraft. A propulsion core comprises a compressor, a combustor, a turbine, and a shaft. An accessory unit comprises an accessory combustor, an accessory turbine, and an accessory shaft. A tank is configured to hold high pressure air and operably connected to the accessory unit. An electric generator comprises an electrical output and a mechanical input, with the mechanical input operably connected to the accessory shaft and the electrical output operably connected to an electric motor operably connected to the shaft. The electrical output is operably connected to an auxiliary power consuming device in the aircraft.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 27, 2019
    Assignee: ROLLS-ROYCE CORPORATION
    Inventor: Michael Abraham Karam
  • Patent number: 10385791
    Abstract: A PCM (60) performs a catalyst early warming control (AWS control) for accelerating warm-up of a catalytic device. When the catalytic device (35) is not in an activated state and a vehicle is traveling, the PCM (60) is configured to perform: a fuel injection control to inject fuel such that a homogeneous fuel-air mixture can be formed in a combustion chamber (11) of an engine (10) so as to generate a homogeneous combustion; an intake air amount control to increase intake air amount; and an ignition control to retard ignition timing from a reference ignition timing. In addition, the PCM (60) is configured to vary ignition timing retard amount corresponding to a difference between the ignition timing retarded by the ignition timing control and the reference ignition timing, in accordance with engine speed and/or engine load.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 20, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Tomohiro Ueno, Yusuke Higuchi
  • Patent number: 10385747
    Abstract: An exhaust gas purification system for an internal combustion engine includes an oxidation catalyst device on an upstream side in an exhaust passage of an internal combustion engine and a lean NOx trap catalyst device on a downstream side, a controller which controls the exhaust gas purification system is configured to, when a temperature-rising control of an exhaust gas in a regeneration control is performed to recover a purification ability of the exhaust gas purification system, perform a control that changes a measurement position of a control temperature which is a control amount of a feedback control in the temperature-rising control, according to an excess air ratio or an oxygen concentration of the exhaust gas passing through the exhaust passage.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: August 20, 2019
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Daiji Nagaoka, Teruo Nakada, Takayuki Sakamoto
  • Patent number: 10378405
    Abstract: A method for managing temperatures in an aftertreatment system positioned downstream of an engine. The method includes (1) combusting a rich air/diesel mixture in a cylinder of the engine, and then (2) combusting a lean air/diesel mixture in the cylinder, in the next combustion event in the cylinder, after combusting the rich air/diesel mixture therein. The method further includes repeating steps (1) and (2) in the cylinder and basing a frequency thereof on a desired aftertreatment system temperature.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 13, 2019
    Assignee: DEERE & COMPANY
    Inventors: Richard E. Winsor, Jacob M. Rosswurm
  • Patent number: 10378417
    Abstract: Methods and systems are provided for a particulate matter sensor arranged along an exhaust passage. In one example, a particulate matter sensor includes a series of tubes arranged in substantially a U-shape, and where the particulate matter sensor comprises one or more of a rotating element and a temperature sensing element.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: August 13, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Xiaogang Zhang, Jianwen James Yi
  • Patent number: 10378408
    Abstract: Described herein are illustrative exhaust systems and methods including ammonia generation and storage. An illustrative system can include a first exhaust conduit to and receive a first exhaust stream from a first engine, and a second exhaust conduit to and receive a second exhaust stream from a second engine. In the illustrative example, an exhaust treatment device coupled to the second exhaust conduit downstream of the second engine can convert nitrogen oxides (NOx) in the second exhaust stream into ammonia. An ammonia storage device coupled to the second exhaust conduit downstream of the exhaust treatment device can be configured to receive and store at least a portion of the converted ammonia as stored ammonia and to release at least a portion of the stored ammonia to a catalytic converter. The catalytic converter can include a selective catalytic reduction catalyst configured to use the ammonia to reduce NOx.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 13, 2019
    Assignee: Caterpillar Inc.
    Inventors: James J. Driscoll, Eric L. Schroeder
  • Patent number: 10378404
    Abstract: The present subject matter relates to a method and a treatment system monitor for monitoring an engine exhaust after-treatment system containing more than one Lean NOx Traps (LNT). The method includes receiving an exhaust gas of a desired air-fuel ratio upstream of a respective LNT. The LNT is further regenerated using a richer than stoichiometric exhaust air-fuel ratio and subsequently an air-fuel ratio received downstream of the LNT is evaluated. Further, a working state of a respective LNT is determined based on the monitoring of the air-fuel ratio and oxygen level upstream and downstream of the LNT.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: August 13, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Christoph Boerensen, Frank Linzen
  • Patent number: 10371031
    Abstract: Methods and systems are provided for an exhaust passage having a plurality of catalysts. In one example, a method may include injecting reductant via one or more injectors of the exhaust passage and monitoring injection conditions by flowing exhaust gas to the engine.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 6, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Monika Angst
  • Patent number: 10371027
    Abstract: An exhaust gas purification system of a working machine is operable to reduce a loss of a working time caused by a point that it takes a long time to renew an exhaust gas purification device by throttle devices. The exhaust gas purification system of the working machine is provided with a common rail type engine which is mounted to the working machine, an exhaust gas purification device which is arranged in an exhaust system of the engine, and at least one of the intake air throttle device and the exhaust gas throttle device. It is provided with mode selection input means which selects whether an auxiliary renewing mode is executed or a forced renewing mode is executed in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: August 6, 2019
    Assignee: YANMAR CO., LTD.
    Inventor: Kenta Saitou
  • Patent number: 10369555
    Abstract: A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow monolith comprising a porous substrate having surfaces that define the channels and having a first zone extending in the longitudinal direction from a first end face towards a second end face for a distance less than the filter length and a second zone extending in the longitudinal direction from the second end face towards the first end face and extending in the longitudinal direction for a distance less than the filter length, wherein a first SCR catalyst is distributed throughout the first zone of the porous substrate, an ammonia oxidation catalyst is distributed throughout the second zone of the porous substrate and a second SCR catalyst is located in a layer that covers the surfaces in the second zone of the porous substrate.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: August 6, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Garry Adam Burgess, Guy Richard Chandler, Keith Anthony Flanagan, David Marvell, Paul Richard Phillips
  • Patent number: 10364729
    Abstract: A method for determining a mass flow of ammonia between two SCR catalytic converters disposed one after the other in an SCR catalytic converter system in an exhaust system, which comprises only one reduction agent dosing unit upstream of the first SCR catalytic converter, characterized in that the determination is carried out from the signal of a NOx sensor disposed between the two SCR catalytic converters and the signal of a NOx sensor disposed downstream of the second SCR catalytic converter.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: July 30, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Frank Schweizer
  • Patent number: 10364727
    Abstract: A reducing agent is supplied to an NOx 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 NOx is equal to or higher than a predetermined temperature at which ammonia is oxidized, an amount of ammonia or an amount of a precursor thereof to be added into exhaust gas from an addition valve is made smaller, when an air fuel ratio of exhaust gas flowing into the NOx catalyst is larger than a predetermined air fuel ratio, than when the air fuel ratio of the exhaust gas is equal to or less than the predetermined air fuel ratio.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 30, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Arifumi Matsumoto
  • Patent number: 10364723
    Abstract: The present invention is a method for removing pollution from exhaust gas circulating in an exhaust line (12) of an internal-combustion engine. The exhaust line comprises an ammonia-sensitive catalyst (46) with selective NOx catalytic reduction traversed by the gas and an injector (56, 58) for injecting a reductant of the pollutants The catalyst decomposes the reductant into a hydrogen gas phase and an ammonia gas phase and, for a gas temperature below approximately 150° C. injects the hydrogen into the exhaust line in combination with a hydrogen-sensitive NOx catalyst.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: July 30, 2019
    Assignee: IFP ENERGIES NOUVELLES
    Inventor: Stéphane Raux
  • Patent number: 10358966
    Abstract: Technical solutions are described for limiting exposure of components of an emissions control system to rich exhaust conditions. An example an emissions control system includes an oxygen storage component; and a controller that limits exposure of the oxygen storage component to rich exhaust conditions. The limiting includes determining an air-to-fuel equivalence ratio in exhaust gas in response to an engine receiving a request to generate torque, the request including a displacement of a pedal; determining an amount of oxygen in the exhaust gas based on the air-to-fuel equivalence ratio; determining an oxygen level stored by the oxygen storage component; and if the oxygen level is above a predetermined threshold, lowering a torque generation rate of the engine, which specifies amount of torque generated per unit displacement of the pedal.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: July 23, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael A. Smith, Christopher L. Whitt, Sarah Funk, Shouxian Ren
  • Patent number: 10352217
    Abstract: A method is provided for controlling the injection, by a reductant injector in an exhaust system for an internal combustion engine, of reductant for an exhaust aftertreatment unit of the exhaust system, for example a selective catalytic reduction (SCR) unit. The method includes determining a reductant injection debt in dependence on a reductant flow according to at least a first request being higher than a threshold of the reductant flow, and, at least partly in dependence on the reductant injection debt, controlling the reductant injector so as to inject a compensation flow.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: July 16, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Per-Olof Källen, Henrik Nilsson
  • Patent number: 10352215
    Abstract: A method and system for modeling growth of reductant deposits for an aftertreatment system on a real time basis using input including exhaust gas temperature, exhaust gas flow rate, and reductant dosing rate. The growth of the reductant deposits are affected by a rate at which reductant accumulates and decomposes from a surface of the aftertreatment system. Thus, the method and system disclosed determines a net reductant deposit growth rate value based on a reductant deposit accumulation rate value and a reductant deposit decomposition rate value. Further, the method and system disclosed determines a reductant mass deposit value based on the net reductant deposit growth rate value. The reductant mass deposit value determined by the method and system may then be used to control a regeneration strategy of the aftertreatment system to eliminate the reductant deposits from the aftertreatment system.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: July 16, 2019
    Assignee: Caterpillar Inc.
    Inventors: Yong Yi, Shuhai Hou, Hongsheng Sun
  • Patent number: 10352219
    Abstract: A method of controlling regeneration of a selective catalytic reduction (SCR) on a diesel particulate filter (DPF) (SDPF) by using an increase in a temperature of exhaust gas of a vehicle include confirming whether the vehicle is in an idle state or whether the vehicle enters a re-start after a start-stop before the regeneration of the SDPF and determining an entrance condition, determining, when the entrance condition is satisfied, a quantity of urea injection and a quantity of urea accumulated before the regeneration and determining whether the determined quantity of urea injection does not exceed a target quantity of urea, and increasing a temperature within a filter of the SDPF to a predetermined value or more during the regeneration of the SDPF and removing urea deposited at the lower end portion of the filter.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: July 16, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Choong-Il Kwon
  • Patent number: 10344654
    Abstract: Described herein is a method for detecting steady state ammonia slip for a motor vehicle having an internal combustion engine and an emissions control system. The emissions control system includes a selective catalytic reduction (SCR) device, a NOx sensor, and a controller. The controller executes a method for ammonia slip detection that includes determining if the SCR device is at steady state, comparing a NOx measurement from the NOx sensor with a predicted NOx value. If the NOx measurement exceeds the predicted NOx value by a threshold, perturbing a reductant injection, the perturbation having a selected magnitude and a selected duration. The method also includes measuring a NOx value resulting from the perturbation and computing a gradient thereof relative to the measured NOx, and ascertaining if a gradient of the NOx resulting from the perturbation exceeds a threshold and identifying a reductant slip condition if so.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 9, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Luca Lauritano, Luis Daniel Guerrero Cruz
  • Patent number: 10344656
    Abstract: A mixing apparatus for mixing a precursor substance of a reducing agent with exhaust gas, having a housing that provides a mixing chamber and a silencer. The housing inlet side has an inlet connection for exhaust gas and an outlet side having an outlet connection for reducing agent intermixed with the exhaust gas to be discharged. Longitudinal axes of the inlet and outlet connections are offset and parallel relative to one another. An introduction device introduces a precursor substance of the reducing agent and is positioned at the inlet side in a region of the outlet connection longitudinal axis. A length of the housing between the inlet and outlet side at least 1.9 to 7 times a diameter of the inlet connection. A width of the housing is maximally 3 times the diameter of the inlet connection.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: July 9, 2019
    Assignee: MAN Energy Solutions SE
    Inventors: Andreas Döring, Ingo Bader
  • Patent number: 10344652
    Abstract: An aftertreatment system comprises a reductant storage tank and a selective catalytic reduction (SCR) system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly including a pump and dosing valve is fluidly coupled to the pump and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to initialize the pump so as to pressurize a reductant in the pump. The dosing valve is opened, thereby expelling the reductant into the SCR system. An operating electrical parameter value of the pump is determined which is indicative of an operating pressure of the pump. The controller determines if the operating electrical parameter value exceeds a predetermined operating threshold. If the operating electrical parameter value exceeds the predetermined operating threshold, the controller stops the pump.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: July 9, 2019
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Tobias Englert, Jens Honeck
  • Patent number: 10344643
    Abstract: An exhaust purification system includes an LAF sensor provided in an exhaust pipe and generates a signal corresponding to an air-fuel ratio of exhaust gas. An upstream catalytic converter is downstream of the LAF sensor and has a catalyst to purify the exhaust gas. An O2 sensor is downstream of the upstream catalytic converter, and generates a signal corresponding to the air-fuel ratio of the exhaust gas. A GPF is downstream of a the O2 sensor and purifies the exhaust gas. An ECU controls an air-fuel mixture in an engine using output signal KACT of the LAF sensor and an output signal VO2 of the O2 sensor such that the air-fuel ratio of exhaust gas flowing into the GPF converges to a target value near the stoichiometric ratio. The GPF has a filter substrate and a downstream TWC supported by a partition of the filter substrate.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 9, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shinichiro Otsuka, Kenji Katayama, Noritaka Masumitsu, Ryoko Yamada
  • Patent number: 10337437
    Abstract: An abnormality diagnosis device for an engine includes an electronic control unit configured to execute temperature rise processing by controlling an air-fuel ratio of at least one of a plurality of cylinders to be a rich air-fuel ratio and controlling an air-fuel ratio of each of the other cylinders to be a lean air-fuel ratio. The electronic control unit is configured to determine whether or not the execution of the temperature rise processing is ongoing, to execute abnormality determination processing to determine whether or not the engine is in an abnormal state, to execute the abnormality determination processing based on whether or not the variation degree during stop of the temperature rise processing exceeds a first determination value, and to execute the abnormality determination processing based on whether or not the variation degree during the execution of the temperature rise processing exceeds a second determination value.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: July 2, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Nakamura, Yuki Nose, Eiji Ikuta
  • Patent number: 10337376
    Abstract: An exhaust gas purification system comprises a first fuel supply unit to supply fuel to exhaust gas flowing in an exhaust passage by a supply valve arranged in the exhaust passage, and a second fuel supply unit to supply fuel to exhaust gas by adjusting a fuel injection condition, wherein in a temperature raising stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, first control is performed in which fuel is supplied by the first fuel supply unit, and in a temperature holding stage of the NOx SCR catalyst associated with the exhaust gas temperature raising processing, at least second control is performed in which the ratio of an amount of fuel supply by the second fuel supply unit with respect to an amount of fuel supply by the first fuel supply unit becomes higher in comparison with that when performing the first control.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: July 2, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Mikami, Shigeki Nakayama, Keishi Takada, Nobumoto Ohashi, Junichi Matsuo
  • Patent number: 10337383
    Abstract: A method for an engine employing an after-treatment (AT) system with an AT device for treating an engine exhaust gas includes detecting an actual concentration of a pollutant in the exhaust gas upstream of the AT device. The method additionally includes treating the exhaust gas via the AT device and directing the treated gas to an exhaust gas passage. The method also includes recirculating a portion of the treated exhaust gas from the exhaust gas passage to the engine's intake passage and determining efficiency of the AT device, after recirculating the portion of the treated exhaust gas, using the detected actual pollutant concentration. Furthermore, the method includes maintaining operation of the AT system when the determined AT device efficiency is at or above a predetermined value and activating a sensory signal indicative of the AT device having malfunctioned when the determined AT device efficiency is below the predetermined value.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: July 2, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Salvatore Trimboli, Davide Gessaroli, Valerio Formica
  • Patent number: 10337385
    Abstract: A method for monitoring an SCR injection system is disclosed. The method includes operating a pump, and measuring a first pressure drop value in the SCR injection system during actuation of a reductant injector. A second pressure drop value in the SCR injection system is measured during a further actuation of the reductant injector. It is determined to perform a deposit mitigation strategy based on the first pressure drop value and the second pressure drop value.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 2, 2019
    Assignee: Perkins Engines Company Limited
    Inventors: Siddharth Subhash Gharpure, Stuart Smith, James K. McCloskey, Tom Carlill
  • Patent number: 10337466
    Abstract: The present disclosure provides an engine system of a vehicle including an engine having combustion chambers for generating driving torque by burning fuel; an intake line in which fresh air flowing into the combustion chambers flows; an exhaust line in which exhaust gas exhausted from the combustion chambers flows; a recirculation line connecting the exhaust line and the intake line; a turbocharger including a turbine disposed at the exhaust line and rotated by the exhaust gas from the combustion chambers, and a compressor disposed at the intake line and rotated together with the turbine and compressing fresh air; an exhaust gas recirculation valve disposed at the connection of the recirculation line and the intake line to adjust an exhaust gas recirculation gas amount supplied to the intake line through the recirculation line; and a remaining gas elimination apparatus for supplying gas remaining in the intake line to the recirculation line.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: July 2, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jungjoo Park, Min Sub Kim
  • Patent number: 10337374
    Abstract: Methods and systems are provided for a steam reforming catalyst. In one example, a method may include flowing exhaust gas from a first cylinder bank directly to a three-way catalyst, flowing exhaust gas from a second cylinder bank directly to a steam reforming catalyst, and flowing exhaust gas from the steam reforming catalyst to the three-way catalyst.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: July 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Rachel Alison Snow, Eva Thanasiu, Paul M. Laing, Giovanni Cavataio
  • Patent number: 10329980
    Abstract: An exhaust emission control system of an engine is provided including a NOx catalyst for oxidizing HC and storing NOx within exhaust gas when an air-fuel ratio of the exhaust gas is lean, and reducing the NOx when the air-fuel ratio is approximately stoichiometric or rich. The system includes a SCR catalyst for purifying NOx by causing a reaction with NH3, a urea injector, a fuel injection controlling module, and a processor configured to execute a NOx reduction controlling module for performing a NOx reduction control to enrich the air-fuel ratio to reach a target ratio. When the urea injection is determined to be abnormal, the NOx reduction controlling module performs a NH3-supplied NOx reduction control in a state where a larger amount of unburned fuel than the amount of unburned fuel in the exhaust passage in the NOx reduction control is supplied to the exhaust passage.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: June 25, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Masanobu Kanno, Takayuki Yamaguchi, Masayuki Tetsuno
  • Patent number: 10330036
    Abstract: If the rotation speed of the output shaft of an engine exceeds a lower limit engine rotation speed, and the rotation speed of an input shaft exceeds a lower limit input shaft rotation speed, the control apparatus of this invention executes cylinder deactivation control of decreasing the number of operating cylinders by stopping the operations of some of a plurality of cylinders based on a cylinder deactivation upper limit engine torque set by referring to a cylinder deactivation control table corresponding to the gear range of an automatic transmission.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: June 25, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Fumio Egashira
  • Patent number: 10329977
    Abstract: Methods and systems are provided for controlling particulate filter temperature during non-combustion conditions. In one example, a method for an engine includes responsive to a particulate filter temperature above a threshold temperature and while operating the engine with deceleration fuel shut-off (DFSO), fully closing a throttle valve configured to regulate flow of intake air to the engine, and responsive to intake manifold pressure dropping below a threshold pressure while the throttle valve is fully closed, adjusting a position of the throttle valve based on the particulate filter temperature.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: June 25, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Emil G. Serban, Michiel J. Van Nieuwstadt
  • Patent number: 10323607
    Abstract: Various methods and systems are provided for a drain system for an EGR system of an engine system. In one example, the drain system includes a connector fluidly coupled to each of an intake system, an exhaust system, and a fluid collector, where the connector is positioned vertically below an intake manifold of the intake system and an exhaust passage of the exhaust system and vertically above the fluid collector with respect to a surface on which an engine sits.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: June 18, 2019
    Assignee: GE Global Sourcing LLC
    Inventors: Kevin Paul Bailey, Daniel Edward Loringer, Kent Jeffries, Eric David Peters, David Marshall Wright, Christopher Joseph Homison
  • Patent number: 10323613
    Abstract: A combined fuel for use in an internal combustion engine comprises a combination of partially combusted particles from the engine exhaust, said particles being in suspension in ordinary fuel. A method and apparatus for recycling partially combusted particulate material by collecting those materials. The particulate materials are combined with ordinary fuel in the fuel system to form the combined fuel which is filtered and fed the engine for combustion.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: June 18, 2019
    Assignee: Illinois Valley Holding Company
    Inventor: Brett Bailey
  • Patent number: 10309871
    Abstract: A vehicle trailer for attaching to a vehicle and analyzing operating characteristics of the vehicle is provided. The trailer includes a frame having a tongue configured to attach to a vehicle. The trailer has its own designated powertrain configured to propel and brake the trailer independent from the vehicle. A connecting member is configured to attach to an exhaust pipe of the vehicle and includes an emissions sensor configured to detect emissions from the exhaust pipe. At least one controller is coupled to the emissions sensor and is configured to analyze the emissions. The trailer can also be attached to the vehicle via an attachment member and configured to propel the vehicle across a range of increasing speeds while a powertrain of the vehicle is in neutral, and measure forces required to propel the vehicle across the range of speeds utilizing a force gauge on the attachment member.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: June 4, 2019
    Assignee: Ford Global Technologie, LLC
    Inventor: Daniel Lee Hagan, Jr.
  • Patent number: 10309281
    Abstract: A system for reducing environmentally harmful emissions from an internal combustion engine. The system may incorporate an exhaust after-treatment device. The exhaust after-treatment device may use selective catalytic reduction to remove certain emissions from the exhaust of the engine. Urea solution may be inserted into the exhaust emissions, which is decomposed to ammonia to become a reduction agent for reduction of NOx in the emissions. The engine may be managed by a controller and the exhaust after-treatment device may be managed by another controller. These controllers may be cascaded, or be managed by a third controller that provides hierarchical or coordinated control of engine performance and emissions reduction. The engine and the exhaust after-treatment device may be modeled to aid in designing and building a system for coordinated control of an actual engine and a selective catalytic reduction after-treatment device. The controllers may be predictive model controllers.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 4, 2019
    Assignee: Garrett Transportation I Inc.
    Inventors: Gregory Stewart, Jaroslav Pekar, Daniel Pachner
  • Patent number: 10309280
    Abstract: A selective catalytic reduction solution having urea, water and gas bubbles contained within the solution. In particular, the solution has a urea content that is present in an amount greater than 31% (m/m) mass fraction of material and gas bubbles in the solution in an amount between about 7% to about 9% of the volume of solution when the solution is at a pressure of about 1 bar absolute. When the selective catalytic reduction solution is pressurized to a range between 6 bar and 7.5 bar, the gas bubbles are in a range between about 1.33% to about 1.07% of the solution when the solution is pressurized. The presence of the gas bubbles provides an expansion volume for the urea solution, if the urea solution begins freezing due to cold temperatures.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: June 4, 2019
    Assignee: Continental Powertrain USA, LLC
    Inventor: Keith Aaron Shaw
  • Patent number: 10301993
    Abstract: An electrically heated catalyst device has a catalyst that purifies exhaust gas from an engine, and is configured to heat the catalyst with electric power that is supplied from an electric storage device. A current sensor detects a current that is supplied to the electrically heated catalyst device. A current sensor detects an input/output current of the electric storage device. A controller executes failure determination control to determine whether the current sensor has a failure. In the failure determination control, the controller estimates a current that is supplied to the electrically heated catalyst device using a detection value of the current sensor and compares the estimated current with a detection value of the current sensor to determine whether the current sensor has a failure.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: May 28, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keita Hashimoto, Takahiro Suzuki
  • Patent number: 10294883
    Abstract: Methods and system for controlling air-fuel ratios in an internal combustion engine are disclosed. One embodiment comprises, adjusting a sensor calibration correction value of an exhaust sensor upstream of a catalyst based on an exhaust sensor downstream of the catalyst. The adjustment of the sensor calibration correction value takes advantage of the fact that certain aromatic hydrocarbons causing errors in the reading of the upstream sensor are not present at the downstream sensor due to sufficient catalytic activity of a catalyst positioned between the sensors.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: May 21, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Eric Krengel, Steven Schwochert
  • Patent number: 10293825
    Abstract: Methods of operating internal combustion engines are provided. A controller detects a coasting event while an associated vehicle is in motion. In response to the coasting event, the controller directs at least a portion of an exhaust gas output by an exhaust system of an internal combustion engine of the vehicle into an intake system of the internal combustion engine.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 21, 2019
    Assignee: Cummins Inc.
    Inventors: Tony James Hall, Daniel Reed Dempsey
  • Patent number: 10295182
    Abstract: An arrangement for adjusting the ratio between supplied amounts of fuel (PA) and air (I) in a burner, which is intended for a gaseous and/or liquid fuel is disclosed. The burner comprises a fuel and air mixing zone, a fuel supply conduit adapted to supply the mixing zone with a given inlet flow of fuel, a combustion air supply means adapted to supply the mixing zone with a given inlet flow of combustion air, and burner automation. The burner automation contains measuring instruments. The burner has its mixing zone accompanied by a combustion chamber which is in communication with a flue gas conduit. The combustion chamber or flue gas conduit has at least one catalytic zone. In the arrangement, the measuring instruments include at least one sensor, such as a lambda sensor, measuring the amount of residual oxygen in flue gases (flue gas oxidation/reduction potential).
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: May 21, 2019
    Assignee: Oilon Technology Oy
    Inventor: Tero Tulokas
  • Patent number: 10294881
    Abstract: In a control apparatus for an internal combustion engine, The ignition timing in a rich-cylinder is corrected toward a retardation side from a theoretical-MBT such that the torque generated in the rich-cylinder exceeds a torque generated in the rich-cylinder at the theoretical-MBT, and the ignition timing in a lean-cylinder is corrected toward an advancement side from the theoretical-MBT such that the torque generated in the lean-cylinder exceeds a torque generated in the lean-cylinder at the theoretical-MBT, when a temperature raising process is being executed, and the ignition timing in the rich-cylinder is corrected further toward the retardation side such that the torque generated in the rich-cylinder becomes equal to or smaller than a maximum theoretical generated torque and equal to or larger than the torque generated in the lean-cylinder at the theoretical-MBT, when the temperature raising process is being executed and the engine is in a low-load operating state.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: May 21, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Nose, Yoshiyuki Shogenji, Eiji Ikuta, Keiichi Myojo
  • Patent number: 10293303
    Abstract: A modular plasma treatment system has interchangeable and easily accessible inner and outer electrodes that concentrically nest within an outer housing of one or more plasma reformers. The inner and outer electrodes have self-centering features that allow for blind-fitting of the interchangeable inner and outer electrodes during electrode replacement and maintenance. A plurality of reformers that generate different types of plasmas are preferably arranged serially to allow for a mixture of separate plasmas within the same reaction area and to increase utilization of short-lived radicals.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: May 21, 2019
    Assignee: THRIVALTECH, LLC
    Inventor: Garrett Hill
  • Patent number: 10287949
    Abstract: The current invention consists of a method and device that is coated with at least one predeposited photocatalyst to reduce or eliminate exhaust emissions and powered by a thermoelectric generator. The method and device comprises a light source emitting sufficient light between 10 nm and 700 nm for the photocatalyst coating and a means to attach said method and device to the source of exhaust emissions.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: May 14, 2019
    Assignee: DRYWIRED, LLC
    Inventors: Camille Charles Chidiac, Kailey Rae Bradt