Anti-pollution Patents (Class 60/274)
  • Patent number: 10808586
    Abstract: Rich spike is carried out in an efficient manner. In an exhaust gas purification apparatus for an internal combustion engine which performs lean burn operation, the apparatus includes an NOx storage reduction catalyst, a controller to carry out rich spike, to calculate a storage amount of NOx, to calculate a storage amount of nitrates, and calculate a nitrate ratio, wherein the controller controls a timing at which the rich spike is carried out, based on the nitrate ratio.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 20, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Kobayashi, Toshihiro Mori, Daichi Imai, Keiichiro Aoki
  • Patent number: 10801387
    Abstract: A fluid injector includes a valve assembly constructed and arranged to control flow of fluid from an inlet to an outlet of the injector. A metal housing surrounds at least a portion of the valve assembly. A plastic body is molded over at least a portion of the housing. A distal end of the body defines an integral stepped portion extending from the body. A carrier surrounds at least the distal end of the body. A seal member is in contact with at least the stepped portion and a surface of the carrier to prevent liquid from entering a space between the housing and the body.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 13, 2020
    Assignee: Vitesco Technologies USA, LLC.
    Inventors: Robert W McFarland, Todd M Detweiler, Keith A Shaw
  • Patent number: 10801379
    Abstract: A controller executes a fuel introduction process of introducing, in a state in which the crankshaft of an internal combustion engine is rotating, air-fuel mixture that contains fuel injected by a fuel injection valve into the exhaust passage without burning the air-fuel mixture in the cylinder. The controller executes a discharge process of performing spark discharge of an ignition plug at non-combustion ignition timing during the execution of the fuel introduction process. The non-combustion ignition timing is timing within a period in which the air-fuel mixture is not burned in the cylinder even if the spark discharge of the ignition plug is performed.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: October 13, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuto Ikeda, Yuki Nose, Keiichi Myojo, Hirokazu Ando
  • Patent number: 10801385
    Abstract: A system may include a NOx sensor and a controller. The controller may be configured to interpret a value of a first parameter indicative of an amount of NOx measured by the NOx sensor and interpret a value of a second parameter for a NOx value from a look-up table. The controller may be further configured to determine a correction factor based on the value of the first parameter and the value of the second parameter and generate a dosing command based, at least in part, on the determined correction factor. In some implementations, the NOx value from the look-up table may be based on one or more operating conditions of an engine. In some implementations, the controller may be further configured to update a NOx value of the look-up table based on the determined correction factor.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: October 13, 2020
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Chetan Ponnathpur, Sarang S. Sonawane
  • Patent number: 10794254
    Abstract: A urea injection control method in an exhaust after-treatment system includes: performing an ammonia slip prevention logic that adjusts a urea injection amount based on the highest temperature during a predetermined period of time from an end point of filter regeneration to a thermal equilibrium point when a temperature of a selective catalytic reduction (SCR) catalyst is higher than or equal to a predetermined threshold temperature at the end point of the filter regeneration; and adjusting a urea injection amount based on an ammonia storage amount map when the temperature of the SCR catalyst is lower than or equal to the predetermined threshold temperature at the end point of the filter regeneration. In particular, the thermal equilibrium point is a point at which a temperature of a filter is close or equal to an exhaust gas temperature.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: October 6, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Yoon Sung Choi
  • Patent number: 10787946
    Abstract: A vehicle exhaust system includes a mixer housing that has a doser opening and defines an internal mixing chamber. A doser injects fluid into the mixer housing through the doser opening. A flow passage has an inlet end positioned adjacent the doser opening and an outlet end open to the mixing chamber. At least one heating device associated with the flow passage.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: September 29, 2020
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: John G. Rohde, Madhuri Gandikota
  • Patent number: 10787164
    Abstract: A method for controlling a hybrid vehicle for a cold start. The method includes determining whether a combustion engine of the vehicle is idling. The method further includes, when the engine is idling, increasing a load of a hybrid starter/generator (HSG) until a selective catalytic reduction (SCR) catalyst reaches a desirable temperature.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: September 29, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Hwa Yong Jang
  • Patent number: 10781734
    Abstract: An exhaust gas control apparatus for an internal combustion engine includes a NOX storage reduction catalyst, a selective catalytic reduction catalyst, and an electronic control unit configured to shift an operation state of the engine from a rich operation state to a lean operation state, in a case where an acquired temperature of the NOX storage reduction catalyst is higher than a storage limit temperature, and an acquired NH3 adsorption amount is equal to or larger than a lower limit adsorption amount when a lean operation restart request is made, and not to shift the operation state from the rich operation state to the lean operation state in a case where the acquired temperature of the NOX storage reduction catalyst is higher than the storage limit temperature and the acquired NH3 adsorption amount is smaller than the lower limit adsorption amount when the lean operation restart request is made.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masataka Ogushi, Keiichiro Aoki, Toshihiro Mori, Hiroshi Kobayashi
  • Patent number: 10774763
    Abstract: When stopping combustion in a cylinder under a situation in which the crankshaft of an internal combustion engine having an ignition device is rotating, a controller executes a fuel introduction process of injecting fuel from a fuel injection valve and introducing the fuel from inside the cylinder to the exhaust passage without burning the fuel. Also, the controller executes a storing process before starting the fuel introduction process. In the storing process, the controller stores oxygen in a three-way catalyst by executing a fuel cutoff process of stopping fuel injection of the fuel injection valve under a situation in which the crankshaft is rotating.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: September 15, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuto Ikeda, Yuki Nose, Hirofumi Hashinokuchi, Tatsuaki Suzuki, Keiichi Myojo, Eiji Ikuta, Hirokazu Ando
  • Patent number: 10774708
    Abstract: Gasoline Direct Injection (GDI) engines require gasoline particulate filters (GPFs) as a key component of the emissions control system to reduce particulate emissions. GPFs are known to have poor initial performance, with performance increasing after the filter develops a cake. This poor initial performance make it impossible to accurately assess vehicle emissions performance at the mileage requirements for vehicle certification. Compositions and methods are disclosed to improve filtration efficiency in a fresh or low mileage GPF.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: September 15, 2020
    Assignee: Afton Chemical Corporation
    Inventors: Huifang Shao, Joseph W. Roos, Joseph E. Remias
  • Patent number: 10775223
    Abstract: A method for identifying deviations in quantity in the case of a fluidic metering system (100-165), in particular an internal combustion engine of a motor vehicle, in which at least one conveying pump (125) for conveying a fluid, and at least one pressure sensor (135) for determining a fluidic pressure in the metering system (100-165), are disposed, wherein it is provided in particular that a test admeasurement of fluid is carried out (205), that a temporal pressure drop in the metering system (100-165) is detected (210), that the detected temporal pressure drop is compared with a pressure drop (215) that is to be theoretically expected (220), and that a deviation in quantity of the metering system (100-165) is determined based on the result of the comparison (225).
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 15, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Johannes Georg Mueller, Sebastian Gepperth
  • Patent number: 10760463
    Abstract: An exhaust treatment device for a diesel engine includes a parked regeneration requirement notification component, and a parked regeneration start operation component, a regeneration process of a diesel particulate filter includes an automatic regeneration process and a parked regeneration process, the automatic regeneration process is automatically started when an estimation value of particulate material accumulated in the diesel particulate filter reaches a predetermined value, and the parked regeneration process is performed when first and second conditions are satisfied, the first condition being that a parked regeneration requirement notification component performs a notification of a parked regeneration requirement when a number of cancellations of the automatic regeneration process reaches a predetermined value or more, the second condition being that the parked regeneration start operation component is subjected to a start operation during a parked state in which an engine equipped machine is neither
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: September 1, 2020
    Assignee: KUBOTA Corporation
    Inventors: Masayuki Togawa, Kazunari Tsujino
  • Patent number: 10760512
    Abstract: Methods and systems are provided for adjusting engine operating parameters in response to an emission output from vehicles within a region. In one example, a method comprises adjusting engine operating parameters in a portion of the vehicles to decrease an emission output therefrom.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: September 1, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Turgay Aslandere
  • Patent number: 10753251
    Abstract: A method for operating a gas engine having an adjoining exhaust line through which exhaust line exhaust gas of the engine flows includes: operating the gas engine in accordance with a Miller cycle, such that a closing point of at least one intake valve of the gas engine is in a crank angle range of from about 50° of crank angle before bottom dead center (BDC) to about 10° of crank angle before BDC; and lowering, by at least one selective catalytic reduction (SCR) catalyst element in the exhaust line, a level of nitrogen oxides (NOx) in the exhaust gas flowing through the SCR catalyst element using hydrocarbons (CyHz) as a reducing agent. At least some of the hydrocarbons (CyHz) flowing through the SCR catalyst element are constituents of the exhaust gas of the gas engine.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: August 25, 2020
    Assignee: MAN Truck & Bus AG
    Inventors: Bruno Barciela, Martin McMackin
  • Patent number: 10753249
    Abstract: An exhaust emission control device for an internal combustion engine according to the present disclosure includes an exhaust emission control catalyst provided in an exhaust passage in an internal combustion engine and divided into a preceding catalyst and a succeeding catalyst, and a heating device provided in the exhaust passage between the preceding catalyst and the succeeding catalyst. The exhaust emission control catalyst is divided into the preceding catalyst and the succeeding catalyst so that a ratio of a capacity of the preceding catalyst to a total displacement of the internal combustion engine is from 0.3 to 1.5.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: August 25, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryohei Ono, Masaaki Sato, Katsuhiro Ito, Akira Mikami, Kazuhiro Umemoto, Daichi Imai
  • Patent number: 10753255
    Abstract: A method (300) for operating an SCR catalytic converter system which has a first SCR catalytic converter (12) and a second SCR catalytic converter, characterized by a step of controlling (310) an NH3 mass flow after the first SCR catalytic converter (12).
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: August 25, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Frank Schweizer
  • Patent number: 10746066
    Abstract: A controller for an exhaust-gas purification system of a vehicle, may be configured to activate a regeneration of a diesel particulate filter when an amount of exhaust particles inside the diesel particulate filter exceeds a predetermined threshold level, and to activate a regeneration of an NOx trap catalyst at least when an amount of NOx adsorbed to the NOx trap catalyst exceeds a predetermined NOx threshold value, and wherein the controller is further designed to activate the regeneration the NOx trap catalyst at least sometimes at a beginning of and/or during the regeneration of the diesel particulate filter. The present invention further provides a corresponding method of operating an exhaust-gas purification system of a vehicle.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 18, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Daniele Vacca
  • Patent number: 10746150
    Abstract: Systems and methods for operating a spark ignition engine that includes a particulate filter in the engine's exhaust system are described. In one example, a threshold temperature at which the spark ignition engine may be automatically stopped is adjusted according to an amount of soot that is stored in the particulate filter.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 18, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Justin Badger, Kenneth Frederick, Robert Hurley
  • Patent number: 10724460
    Abstract: An exhaust treatment system and method for the treatment of an exhaust stream from a combustion engine are provided. A first oxidation of compounds comprising one or more of nitrogen, carbon and hydrogen in the exhaust stream is carried out by a first oxidation catalyst. Further, a value (NO2_1/NOx_1)det for a ratio between a first amount of nitrogen dioxide and a first amount of nitrogen oxides leaving said first oxidation catalyst is determined. Active control of at least one parameter related to the combustion engine is carried out, based on the determined value, so that the ratio is impacted. A first additive is supplied into the exhaust stream, following which a first reduction of the first amount of nitrogen oxides is carried out through a catalytic reaction in a catalytic filter, which consists of a particulate filter with an at least partly catalytic coating with reduction characteristics.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: July 28, 2020
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10713933
    Abstract: An emissions sensor health monitor can acquire nitrogen oxide (NOx)-in values measured by an input emissions sensor of the machine and NOx-out values measured by an output emissions sensor of the machine. The emissions sensor health monitor can identify samples of the machine channel data that meet criteria associated with an idle operating condition of an engine of the machine, and determine NOx delta values for the samples. The emissions sensor health monitor can determine that the NOx delta values are above a preset acceptable threshold for at least a threshold time period, and in response perform one or more responsive actions.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: July 14, 2020
    Assignee: Caterpillar Inc.
    Inventors: Deepashri Vinayak Phatak, Dereck Glenn Heffron, Jun Cai
  • Patent number: 10711671
    Abstract: A diesel engine system includes a diesel engine, an exhaust line, a particulate filter interposed in the exhaust line and an electronic control unit for controlling fuel injectors associated with cylinders of the engine. When an accumulated particulate mass in said filter reaches a predetermined threshold, a filter regeneration mode is activated, including activating post-injections of fuel by controlling said injectors, to determine a start of an automatic filter regeneration step, which is caused by an increase in temperature of exhaust gases fed to the filter. The temperature increase is sufficient to burn particulate in the filter. The post-injections of fuel are deactivated whenever a critical condition occurs for at least a first period of time, the critical condition being one in which a temperature value upstream of the filter exceeds a first threshold value. In this case, the regeneration mode is resumed following disappearance of the critical condition.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: July 14, 2020
    Assignee: FCA Italy S.p.A.
    Inventors: Alessandro Mauro, Vincenzo Colandrea, Danilo Garombo
  • Patent number: 10704499
    Abstract: A method for operating a device for injecting water into an internal combustion engine, the device including a water tank for storing water, a pump for conveying the water, the pump being connected to the water tank via a first line, and the pump being operable in a conveying mode and in a back-suction mode, a drive for driving the pump, at least one water injector, which is configured to inject water into an air-conducting line of the internal combustion engine, the water injector being connected to the pump via a second line, the at least one water injector being opened during the operation of the pump in the back-suction mode, in which the water is conveyed in the direction of the water tank, so that air flows into the second line.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: July 7, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Ingmar Burak, Peter Schenk
  • Patent number: 10704481
    Abstract: An internal combustion engine includes a filter, which is configured to trap particulate matter in exhaust gas, an EGR passage, which connects a section of an exhaust passage that is upstream of the filter to an intake passage, and an EGR valve, which is configured to adjust a cross-sectional flow area of the EGR passage. A controller for the internal combustion engine includes processing circuitry, which is configured to execute a limiting process of limiting an opening degree of the EGR valve such that the opening degree is likely to decrease when an amount of the particulate matter trapped by the filter is great as compared to when the amount is small.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: July 7, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuta Teraya
  • Patent number: 10704440
    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: May 16, 2019
    Date of Patent: July 7, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shinichiro Otsuka, Kenji Katayama, Noritaka Masumitsu, Ryoko Yamada
  • Patent number: 10704484
    Abstract: A controller for an internal combustion engine includes processing circuitry configured to execute: a dither control process of operating fuel injection valves to designate at least one of cylinders as a lean combustion cylinder, in which an air-fuel ratio is leaner than a stoichiometric air-fuel ratio, and to designate at least another one of the cylinders as a rich combustion cylinder, in which an air-fuel ratio is richer than the stoichiometric air-fuel ratio; and an idle-time limiting process of causing an absolute value of a difference between the air-fuel ratio in the lean combustion cylinder and the air-fuel ratio in the rich combustion cylinder to be smaller when the internal combustion engine is idling than when the internal combustion engine is not idling.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: July 7, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Eiji Ikuta, Yuki Nose, Yoshiyuki Shogenji, Keiichi Myojo, Misako Ban
  • Patent number: 10697387
    Abstract: An internal combustion engine comprises an exhaust purification catalyst and a downstream side air-fuel ratio sensor which is arranged at the downstream side of the exhaust purification catalyst. The control system performs feedback control so that the air-fuel ratio of the exhaust gas becomes the target air-fuel ratio, and performs learning control to correct the control center air-fuel ratio based on the output air-fuel ratio of the downstream side sensor. The target air-fuel ratio is switched to the lean air-fuel ratio when the output air-fuel ratio of the downstream side sensor becomes the rich judged air-fuel ratio and is switched to the rich air-fuel ratio when the output air-fuel ratio becomes the lean judged air-fuel ratio.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: June 30, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shuntaro Okazaki, Norihisa Nakagawa, Yuji Yamaguchi
  • Patent number: 10690629
    Abstract: A gas detection device includes: an element portion; a voltage applying unit configured to apply a voltage across a first electrode and a second electrode on surfaces of a solid electrolyte; a current detecting unit configured to detect an output current flowing between the first electrode and the second electrode; and a measurement control unit. The measurement control unit acquires a parameter which has a correlation with a degree of change of the output current increasing as a concentration of sulfur oxides in an exhaust gas increases based on the output current, and performs determination of whether the concentration of sulfur oxides in the exhaust gas is equal to or higher than a predetermined value or detection of the concentration of sulfur oxides in the exhaust gas based on the acquired parameter.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 23, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhisa Matsuda, Kazuhiro Wakao, Keiichiro Aoki
  • Patent number: 10690071
    Abstract: A vehicle includes an internal combustion engine, a conduit, and a controller. The internal combustion engine has a plurality of cylinders. The conduit is configured to channel exhaust gas away from the cylinders and to a catalyst. The controller is programmed to, in response to starting the engine and a temperature of the catalyst being less than a threshold, operate a first of the plurality of cylinders alone followed by operating the first and a second of the plurality of cylinders alone to increase the temperature of the catalyst toward the threshold.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 23, 2020
    Assignee: DENSO International America, Inc.
    Inventor: Edward Szczepanski
  • Patent number: 10690036
    Abstract: A vehicle controller is programmed to, in response to a command to perform a diagnostic test, operate an engine under one or more lean conditions and/or operate the engine under one or more rich conditions to determine if a catalytic converter, a pre-catalyst oxygen sensor, and a post-catalyst oxygen sensor within the exhaust system of the engine are functioning properly.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: June 23, 2020
    Assignee: DENSO International America, Inc.
    Inventors: Edward Szczepanski, Michael Lewis
  • Patent number: 10690419
    Abstract: A heat exchanger includes a peripheral wall having a polygonal tube shape and partition walls that divide an inside of the peripheral wall into first cells and second cells, the first cells and the second cells extending in an axial direction of the peripheral wall. Ends of each of the first cells in the axial direction are sealed and adjacent ones of the first cells are in communication with one another so that the first cells constitute a first passage having a U-shaped cross section perpendicular to the axial direction. The first passage includes an inflow port and an outflow port that are open in the same surface of the peripheral wall. Each of the second cells constitutes a second passage including an inflow port and an outflow port provided respectively at ends of each of the second cells in the axial direction.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: June 23, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshihiro Koga, Toshio Murata
  • Patent number: 10683788
    Abstract: An exhaust purification system includes a NOx-occlusion-reduction-type catalyst that occludes NOx in exhaust in a lean state and reduces and purifies the occluded NOx in exhaust in a rich state, and a NOx purge rich control unit that executes NOx purge of reducing and purifying the occluded NOx by putting the exhaust into the rich state by fuel injection control, where a catalyst temperature of the NOx-occlusion-reduction-type catalyst is equal to or higher than a catalyst temperature threshold value and a NOx occlusion amount of the NOx-occlusion-reduction-type catalyst is equal to or higher than an NOx occlusion amount threshold value, and executes the NOx purge when the catalyst temperature is lower than a catalyst temperature threshold value.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: June 16, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka
  • Patent number: 10677231
    Abstract: A hydraulic system comprises a fluid tank and a pump, including a pump reservoir, fluidly coupled to the tank via a supply line. A valve is in fluidic communication with the pump reservoir via a pressure line. A backflow line fluidly couples the pump reservoir to the fluid tank via a timer reservoir and an orifice included in the timer reservoir. The hydraulic system transitions between a normal state and a purge state. In the normal state in which the pump is on, a first portion of the fluid is communicated from the pump reservoir to the valve and a second portion of the fluid is communicated from the pump reservoir to the tank. In the purge state, the pressure line and valve are purged followed by the backflow line and the pump reservoir such that no fluid remains in the pump reservoir.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: June 9, 2020
    Assignee: Cummins Emission Solutions, Inc.
    Inventor: Richard D. Young
  • Patent number: 10677749
    Abstract: A gas detection device includes a temperature control part configured to control an amount of energization to a heater so that an impedance of an element part matches a target impedance, to thereby control a temperature of the heater. The temperature control part is configured to set a first target impedance as the target impedance while performing application voltage control for air-fuel ratio detection, and set a second target impedance as the target impedance while performing application voltage control for SOx detection.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: June 9, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Keiichiro Aoki
  • Patent number: 10677130
    Abstract: A method for detecting a dosing error of a reduction agent in a dosing module of an SCR catalytic converter system. The SCR catalytic converter system comprises the dosing module, which has a dosing valve and a flow valve as well as a delivery module with delivery pump. The SCR catalytic converter system, furthermore, has a return, in which a further flow valve is arranged. Said flow valve changes an effective cross-sectional area of the return. The method herein comprises the following steps: at the beginning, the dosing valve is closed (200). At a first pressure value (p1) in the system the delivery pump is switched off (201) and a measurement (202) of a first pressure rate (?RLdynamic) of the flow valve of the return subsequently takes place. Additional operation of the pump and the dosing valve occurs and a ratio of pressure rates is determined.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: June 9, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Farr, Claus Linsenmaier
  • Patent number: 10677127
    Abstract: A method for heating an electrically heatable catalytic converter in an exhaust duct of a motor vehicle having a combustion engine. To heat the catalytic converter prior to a start of the combustion engine, the catalytic converter should already be electrically heated prior to the start of the combustion engine, and the oxygen storage capacity of the electrically heatable catalytic converter should be filled. Thus, an efficient exhaust-gas aftertreatment is made possible already at the start of the combustion engine. A further heating of the catalytic converter by a combined electrical and chemical heating takes place following an electrical preheating phase after the start of the combustion engine by the exothermic reaction of unburned fuel components on a catalytically active surface of the electrically heatable catalytic converter. Also, a motor vehicle having a combustion engine and an exhaust system in which a method according to the present invention is implemented.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: June 9, 2020
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Dennis Achenbach, Falk-Christian Baron Von Ceumern-Lindenstjerna, Stefan Paukner, Michael Manz
  • Patent number: 10672202
    Abstract: A system that provides an estimation of quantities, which are not necessarily directly measurable in a subsystem. The estimates of these quantities may be inferred from other variables. This approach may be referred to as inferential sensing. Physical sensors may be replaced with models or virtual sensors, also known as inferential sensors. The present approach may be a framework for designing inferential sensors in automotive subsystems. The framework may incorporate preparing a model for an observed subsystem, populating a real-time template with data, and running an inferential sensor periodically together with a model in real-time to obtain estimated variables. Once implemented, the framework may be reused for virtually any automotive subsystem without needing significant software code changes.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: June 2, 2020
    Assignee: GARRETT TRAN SPORATION I INC.
    Inventors: Jaroslav Pekar, Ondrej Santin
  • Patent number: 10662846
    Abstract: A method at an exhaust gas cleaning system for an engine (235) in which a reducing agent is added to a passage (290) for exhaust gases from the engine (235) for cleaning the exhaust gases. The exhaust gas cleaning system includes arrangements (270) that require a certain temperature level (Tmax) in order to achieve catalytic exhaust gas cleaning. The method is to distribute and store (s430) a limited amount of reducing agent at temperature level (Tmax); and to use (s440) during a cold start of the exhaust gas cleaning system, the distributed and stored reducing agent to achieve the catalytic exhaust gas cleaning. Also a computer program product (200; 210) to implement the method. Also an arrangement for an exhaust gas cleaning system for an engine (235), and a motor vehicle (100) equipped with the arrangement.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 26, 2020
    Assignee: SCANIA CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson, Andreas Liljestrand
  • Patent number: 10641147
    Abstract: Exhaust gas systems include an oxidation catalyst (OC) capable of receiving exhaust gas and oxidizing one or more of combustible hydrocarbons (HC) and one or more nitrogen oxide (NOx) species, a selective catalytic reduction device (SCR) disposed downstream from and in fluid communication with the OC via a conduit, and an electrically heated catalyst (EHC) disposed at least partially within the conduit downstream from the OC and upstream from the SCR. The EHC comprises a heating element having an outer surface including one or more second oxidation catalyst materials capable of oxidizing CO, HC, and one or more NOx species. The OC includes one or more storage materials individually or collectively capable of storing NOx and/or HC species. Exhaust gas can be supplied by an internal combustion engine which can optionally power a vehicle.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: May 5, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Charles Solbrig, Yong Miao
  • Patent number: 10632422
    Abstract: A first temperature which is a temperature of exhaust gas which has passed through an exhaust gas purification treatment device is detected during supply of urea water from a urea water supply device, and a second temperature which is a temperature of exhaust gas which has passed through a second exhaust gas purification treatment device in a state where an engine in the same operating state as when the first temperature is detected and the supply of the urea water from the urea water supply device is stopped is calculated from preset data. Further, an ammonia calorific value which is an amount of heat generated in an ammonia slip catalyst device by oxidation of ammonia is calculated based on the first temperature and the second temperature, and an ammonia slip amount from the selective reduction catalyst device is calculated based on the ammonia calorific value.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: April 28, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Youhei Nagashima
  • Patent number: 10626778
    Abstract: When a user requests start-up of an internal combustion engine while PM removal control is in execution or immediately after execution of the PM removal control is completed, an electronic control unit informs the user of the vehicle of a first alarm, so that the user recognizes that the internal combustion engine cannot be started up immediately. This makes it possible to suppress the discomfort caused because the internal combustion engine is not started up.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: April 21, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Katsuhiro Ito, Akira Mikami, Masaaki Sato, Keishi Takada, Ryouhei Ono, Edgar Yoshio Morales Teraoka
  • Patent number: 10612437
    Abstract: A method for execution with an exhaust-gas particle filter which is operated with an exhaust-gas aftertreatment system, wherein the exhaust-gas particle filter has a filter wall along which exhaust gas is conducted for filtering purposes; wherein the method includes a regeneration phase with the steps: a) setting a soot load on the exhaust-gas particle filter, wherein the set soot load effects the formation of a soot layer on ash deposited on the filter wall; and b) subsequently mobilising the deposited ash by burning off the formed soot layer during the course of an active regeneration of the exhaust-gas particle filter.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: April 7, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Klaus Rusch, Raphael-David Leopold, Hilmar Wolman, Günter Zitzler, Alexander Schneider, Tim Späder, Andrea Prospero, Norbert Markert, Michael Neuscheler, Viktor Mantaj, Michael Rauter, Boban Maletic, John Scholz, Daniel Chatterjee
  • Patent number: 10605134
    Abstract: The present invention relates to a device for managing gases suitable for being installed at the outlet of a particle filter or a catalytic converter. This device is characterized by a very compact configuration combining at least the heat exchanger for an EGR (Exhaust Gas Recirculation) system, particularly suitable for a low-pressure system, and an exhaust gas outlet pipe with a special configuration that is part of the exhaust line. The exhaust outlet incorporates a valve that allows using the heat exchanger of the EGR system as a heat recovery unit.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: March 31, 2020
    Assignee: BorgWarner Emissions Systems Spain, S.L.U.
    Inventors: Xoan Xosé Hermida Dominguez, Sonia Civeira Dominguez, Salvador Garcia Gonzalez
  • Patent number: 10605765
    Abstract: A gas detection device includes a voltage applying unit configured to apply a voltage across a first electrode and a second electrode of an electrochemical cell and a measurement control unit configured to perform a first application voltage sweep and a second application voltage sweep which have different sweeping voltage ranges, to acquire a first parameter based on the output current of the first application voltage sweep, to acquire a second parameter based on the output current of the second application voltage sweep, to calculate a SOx detection parameter which is a difference or a ratio between the first parameter and the second parameter, and to perform determination of whether sulfur oxides with a predetermined concentration or higher are contained in an exhaust gas or detection of a concentration of sulfur oxides in the exhaust gas based on the SOx detection parameter.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 31, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keiichiro Aoki, Kazuhiro Wakao, Kazuhisa Matsuda
  • Patent number: 10598061
    Abstract: Methods and systems are provided for a diesel oxidation catalyst. In one example, the diesel oxidation catalyst comprises a washcoat with different catalytically active portions for reacting with one or more of carbon containing compounds and NOx. The diesel oxidation catalyst is located upstream of a particulate filter in an exhaust passage.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 24, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Douglas Allen Dobson, Timothy Brian Chanko, Christine Kay Lambert
  • Patent number: 10598066
    Abstract: A diesel exhaust fluid (DEF) delivery system and method for operating same. The method includes controlling a pump to operate at an idle speed to pressurize a pressure line. The method includes controlling a backflow dosing module (BFDM) valve to open to allow an amount of the DEF to flow into a fluid storage tank through a backflow line. The method includes determining a dosing request, a first dosing actuation request for the first dosing valve and a second dosing actuation request for the second dosing valve based on the dosing request. The method includes, when a sum of the first and second dosing actuation requests is less than 100%, controlling the BFDM valve to close when either of the first and second dosing valves is open; and controlling the BFDM valve to open when the first dosing valve is closed and the second dosing valve is closed.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: March 24, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Andrew Evans, Oliver Wintersteller, Andres Murube Lindahl, Palanimuthu Thalamuthu
  • Patent number: 10598109
    Abstract: Systems and methods are provided for preheating emissions control devices prior to engine startup using a heating element and a flow control device operable to provide a fluid flow, such as a compressor or a turbine. One exemplary method of heating an emissions control component prior to engine startup involves opening or otherwise operating a valve to provide a path for fluid flow to the emissions control component, operating a flow control device to provide the fluid flow through the path, and activating a heating element upstream of the emissions control component to heat the fluid flow to the emissions control component.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: March 24, 2020
    Assignee: Garrett Transportation I Inc.
    Inventor: Darius Mehta
  • Patent number: 10598063
    Abstract: An exhaust purification system comprises an exhaust purification catalyst 20, an NOX sensor 46, air-fuel ratio sensor 41 downstream of the catalyst 20, and a control and diagnosis device. The device alternately sets a target air-fuel ratio to a rich air-fuel ratio and a lean air-fuel ratio and switches the target air-fuel ratio from the rich air-fuel ratio to the lean air-fuel ratio when the output air-fuel ratio of the air-fuel ratio sensor becomes a rich judged air-fuel ratio or less. The device diagnoses abnormality of the catalyst based on the output of the NOX sensor. It diagnoses abnormality of the catalyst when the air-fuel ratio of the exhaust gas flowing into the catalyst is a rich air-fuel ratio, but does not diagnose abnormality of the catalyst when the air-fuel ratio of the exhaust gas flowing into the catalyst is a lean air-fuel ratio.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: March 24, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kimikazu Yoda, Keiichiro Aoki, Go Hayashita
  • Patent number: 10590822
    Abstract: A method for operating a system having an internal combustion engine and an exhaust aftertreatment system having an SCR catalyst, wherein the internal combustion engine is controlled on the basis of at least one process parameter that influences a nitrogen oxide raw emission, wherein aging detection is performed for the SCR catalyst, wherein in a first operating mode of the internal combustion engine, if aging of the SCR catalyst is detected, the at least one process parameter is changed in the direction of a reduced nitrogen oxide raw emission, wherein the internal combustion engine is controlled on the basis of the changed at least one process parameter.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: March 17, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Jens Niemeyer, Tim Späder
  • Patent number: 10590823
    Abstract: An exhaust aftertreatment system includes a pump configured to circulate a reagent, an injector configured to deliver the reagent into an exhaust stream, a sensor configured to (i) measure an operating parameter of the aftertreatment system and (ii) output a signal that indicates a value of the measured operating parameter, and a control module configured to control the injector based on the signal outputted by the sensor. The control module includes a correction coefficient determination module configured to generate a correction coefficient based on the signal outputted by the sensor. The control module further includes an injector control module configured to receive an injector flow control signal, determine a pulse width modulation (PWM) signal based on at least the injector flow control signal, and generate an injector control signal that controls actuation of the injector based on at least the correction coefficient and the PWM signal.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: March 17, 2020
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Perry Paielli
  • Patent number: 10568255
    Abstract: An engine is operated to produce exhaust emissions containing carbon nano soot therein which are injected into a solubilizing tank containing nitic acid and carbonic acid in a water solution for solubilizing the carbon nano soot as carbon nano tubes. A gas flow exiting the tank is captured such that some water and some solubilized carbon nano tubes are carried with the gas flow for subsequent delivery to a plant growing medium, either directly or by storing the water and solubilized carbon nano tubes carried with the gas flow in a tank for subsequent application. The solubilizing tank may be supported on agricultural seeding implements or sprayer implements for direct application to crop covered ground. In an irrigation system, the gas flow from the solubilizing tank is directed towards a condensing tank for subsequent application of the condensate to a plant growing medium with irrigation water.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: February 25, 2020
    Assignee: N/C Quest Inc.
    Inventors: Gary Lewis, Zachary Lewis