Automatic Or Timed Reactor Purge Or Heat-up In Engine Starting Operation Patents (Class 60/284)
  • Patent number: 11454182
    Abstract: A controller for an internal combustion engine is configured to execute a temperature-increasing process, a misfire detecting process that detects a misfire, a determining process, and a decreasing process. The temperature-increasing process includes increasing a temperature of a catalyst through a partial cylinder fuel cut-off process. The determining process includes determining whether a number of misfires detected by the misfire detecting process in a number of times combustion control has been executed in each of cylinders is greater than or equal to a given value. The decreasing process includes setting an amount of temperature increase in the catalyst to be smaller when the number of misfires is greater than or equal to the given value than when the number of misfires is less than the given value.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: September 27, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hitoki Sugimoto
  • Patent number: 11448113
    Abstract: A vehicle system (100) includes a conversion catalyst (116), a temperature sensor (156), an indication device (142), and an exhaust gas aftertreatment system controller (132). The conversion catalyst (116) is configured to receive exhaust gas. The temperature sensor (156) is configured to sense a conversion catalyst temperature of the conversion catalyst (116). The indication device (142) is operable between a static state and an impure fuel alarm state. The exhaust gas aftertreatment system controller (132) is configured to receive the conversion catalyst temperature from the temperature sensor (156). The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature lower threshold. The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature upper threshold.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: September 20, 2022
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Gautam Sharma, Deepak Joy Frank, James Hyungsuk Kang, Abhijeet Nande, Jinqian Gong, Farshad Farid, Changsheng Su, Bryon D. Staebler
  • Patent number: 11435408
    Abstract: An external power feed system includes a vehicle and an external power feed device disposed outside the vehicle. The external power feed device includes an external electric leak detector configured to detect an electric leak. The vehicle includes a power supply device configured to supply electric power to the external power feed device. The vehicle includes an external power feed relay. The external power feed relay is disposed between the external power feed device and the power supply device when the external power feed device is connected to the vehicle. The vehicle includes a controller configured to control the external power feed relay such that the external power feed relay is turned off when the external electric leak detector detects an electric leak.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: September 6, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masahiro Asano
  • Patent number: 11428181
    Abstract: Systems and apparatuses include an aftertreatment system including a catalyst, and a controller coupled to the aftertreatment system. During a warmup period for an engine coupled to the catalyst, the controller is configured to determine a value of a catalyst heating metric indicative of an amount of emissions produced per unit of exhaust energy based on information received from the engine and the aftertreatment system, and control at least one of a turbocharger, a fuel injection system, or an Exhaust Gas Recirculation (EGR) system to reach a target value of the catalyst heating metric.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: August 30, 2022
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Yongsoon Yoon
  • Patent number: 11401885
    Abstract: An engine unit includes an engine including a cylinder injection valve that sprays fuel into a combustion chamber and an ignition plug that is able to ignite fuel sprayed from the cylinder injection valve. When expansion stroke injection drive of performing final fuel injection from the cylinder injection valve in an expansion stroke and igniting the fuel using the ignition plug in synchronization with the fuel injection in the expansion stroke is performed, upper and lower limits of an ignition timing are guarded such that the ignition timing is in a predetermined range centered on a final fuel injection start timing at a final determination timing of the ignition timing.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: August 2, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masatomo Yoshihara, Taejin Yoon, Naoki Hayashima, Masanao Idogawa, Takahiro Uchida
  • Patent number: 11365701
    Abstract: An engine device includes an engine including an in-cylinder injection valve and a spark plug, an exhaust gas control device, and a controller. The controller is configured to perform a last fuel injection from the in-cylinder injection valve in an expansion stroke and to set a fuel injection amount for the last fuel injection in expansion stroke injection driving, based on a coolant start temperature, post-start time, and volumetric efficiency. The expansion stroke injection driving is a control that is performed by performing the ignition by the spark plug in synchronization with the fuel injection in the expansion stroke.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: June 21, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masanao Idogawa, Takahiro Uchida, Koji Ichikawa, Hiroaki Mizoguchi, Takuya Okubo, Sohichi Imai, Hirokazu Andoh
  • Patent number: 11359529
    Abstract: A system and method for controlling an aftertreatment assembly includes a diesel oxidation catalyst (DOC) device configured to receive an exhaust gas. One or more sensors are configured to obtain respective sensor data relative to the exhaust gas and DOC device. A controller is in communication with the sensors and configured to obtain respective sensor data relative to the exhaust gas. The controller is configured to determine if one or more enabling conditions are met, including reaching a predefined temperature range in the DOC device. A rich event is induced targeting a predetermined range of a lambda value for a predefined maximum time duration. When the rich event has ended, an exotherm index is obtained for an observation window immediately after the rich event. The controller is configured to control operation of the aftertreatment assembly based at least partially on the exotherm index.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: June 14, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Marco Sculto, Claudio Ciaravino, Luisa Cusanno
  • Patent number: 11326546
    Abstract: A controller for an internal combustion engine, a control method for an internal combustion engine, and a memory medium are provided. The controller determines whether an execution request of a temperature-increasing process for an aftertreatment device for exhaust gas has been issued. When the execution request is determined as having been issued, supply of fuel by a fuel injection valve corresponding to a specified cylinder is deactivated. The specified cylinder is one of cylinders. An air-fuel ratio of air-fuel mixture in a cylinder of the cylinders that differs from the specified cylinder is set to be richer than a stoichiometric air-fuel ratio. When the temperature-increasing process is executed, an adjustment device is operated so as to reduce the fuel concentration in an intake port connected to the specified cylinder.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: May 10, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hitoki Sugimoto
  • Patent number: 11313304
    Abstract: A gas sensor is provided in an exhaust passage of an engine mounted on a vehicle. The gas sensor includes a sensor element and a heater. The sensor element detects a concentration of a specific component in exhaust gas. The heater is energized with electricity from a power source to heat the sensor element. The heater energization control device controls an amount of electricity supplied to the heater. An ambient temperature acquisition unit acquires an ambient temperature, which is a temperature of an environment surrounding the engine. An energization control unit controls the amount of electricity supplied to the heater based on the ambient temperature in temperature raising energization in which a temperature of the sensor element is raised to an active temperature when the engine is started.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: April 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Ryohei Sano, Ko Tanaka
  • Patent number: 11220805
    Abstract: A hydraulic excavator drive system includes: a first pump connected to a boom main control valve and an arm auxiliary control valve by a first pump line; a second pump connected to a boom auxiliary control valve and an arm main control valve by a second pump line; and a controller that does not move the arm auxiliary control valve when arm crowding operation boom raising operations are performed concurrently. The boom auxiliary control valve moves together with the boom main control valve when the boom raising operation is performed. A boom raising second supply line, which connects the boom auxiliary control valve to a boom raising first supply line between the boom main control valve and a boom cylinder, is provided with a check valve that allows a flow from the boom auxiliary control valve toward a head side of the boom cylinder, but prevents a reverse flow.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: January 11, 2022
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Akihiro Kondo, Hideyasu Muraoka, Kazuya Iwabe
  • Patent number: 11214754
    Abstract: Provided is an internal combustion engine lubricating oil composition having a major amount of an oil of lubricating viscosity; a combination of alkaline earth metal alkylhydroxybenzoate detergents; at least about 50 to about 500 ppm of boron from a boron containing detergent; a molybdenum containing compound in an amount to provide the lubricating oil composition from about 100 to about 1500 ppm molybdenum; a ZnDTP compound; where the composition comprises magnesium in an amount from about 100 to about 800 ppm, and calcium in an amount from about 500 to about 2000 ppm.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: January 4, 2022
    Assignee: CHEVRON JAPAN LTD.
    Inventors: Hisanari Onouchi, Koichi Kubo, Isao Tanaka
  • Patent number: 11199162
    Abstract: A computer control network is connected to a multiple-cylinder engine and implements aftertreatment temperature management. Processors are configured to determine an aftertreatment temperature-efficient air to fuel ratio that satisfies the sensed power output request, determine an air to fuel ratio adjustment, select an in-cylinder exhaust gas recirculation technique, select at least one EGR cylinder of the multiple-cylinder engine to implement the in-cylinder exhaust gas recirculation technique, and control the intake valves to open and the exhaust valves to close for the selected at least one EGR cylinder to adjust the oxygen and particulate content of the exhaust gas by applying at least a second compression stroke of the respective reciprocating piston of the at least one EGR cylinder to the exhaust gas to push the exhaust gas through to the intake manifold.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: December 14, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: James E. McCarthy, Jr., Douglas J. Nielsen
  • Patent number: 11085343
    Abstract: A control apparatus controls an exhaust purification system including an exhaust purification catalyst provided in an exhaust passage for an internal combustion engine in a vehicle, and an electric heating device for heating the exhaust purification catalyst in response to the supply of electricity. The control apparatus includes a prediction unit that detects at least one preliminary action of a startup action for the vehicle performed before the startup operation and predicts that the startup operation will be performed, and a heating control unit that causes the electric heating device to heat the exhaust purification catalyst if the prediction unit predicts that the startup operation will be performed.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventor: Yasuhiro Matsumura
  • Patent number: 11060466
    Abstract: A system and method is provided for controlling an electric machine rotatably coupled to a rotatable shaft of an electronically-controlled one of a turbocharger and an exhaust-driven turbo supercharger fluidly coupled to an exhaust duct of an internal combustion engine. An operating temperature of a component of the engine is determined or estimated an operating temperature of a component of the engine or coupled to the engine, which is compared to a threshold temperature. The electric machine is controlled to operate as a motor in response to the determined or estimated temperature of the component being below a threshold temperature.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: July 13, 2021
    Assignee: BorgWarner Inc.
    Inventors: Tyler R. Garrard, Christopher Meszaros
  • Patent number: 11053835
    Abstract: A method and system are provided for assessing engine faults. The method includes measuring actual diesel particulate filter (DPF) soot loading, determining expected DPF soot loading, aid determining that a possible engin component fault is an actual engine component fault by determining that measured actual DPF soot loading exceeds the expected DPF soot loading.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: July 6, 2021
    Assignee: Volvo Truck Corporation
    Inventors: Stephen Geyer, Dale Hoover
  • Patent number: 11047279
    Abstract: A warm-up device includes a heating mechanism, a refrigerant reservoir, and a refrigerant transmitter. The heating mechanism heats a purification catalyst provided to an exhaust pipe. The refrigerant reservoir stores, in a heat insulating manner, a refrigerant whose heat is exchanged with the heated purification catalyst. The refrigerant transmitter transmits the refrigerant stored in the refrigerant reservoir to an object to be warmed up.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: June 29, 2021
    Assignee: SUBARU CORPORATION
    Inventor: Satoshi Haginoya
  • Patent number: 11047282
    Abstract: An exhaust gas purification device is capable of reducing the amount of NOx emissions generated at the time of cold start. An exhaust gas purification device includes a urea injection valve, a metal honeycomb, a temperature sensor, and an SCR catalyst in an exhaust passage. It is possible for an exhaust gas temperature of exhaust gas passing through the metal honeycomb to be increased by the metal honeycomb that is capable of being electrically heated by control executed by a control unit ECU. The exhaust gas temperature is detected by the temperature sensor. Based on a temperature-versus-ammonia adsorption amount profile stored in advance in a storage unit of the control unit ECU, ammonia is pre-adsorbed onto the metal honeycomb and the SCR catalyst, and the metal honeycomb is electrically heated at the time of cold start after the temperature detected by the temperature sensor becomes lower than 150┬░ C.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: June 29, 2021
    Assignee: N.E. CHEMCAT CORPORATION
    Inventors: Toshinori Okajima, Makoto Nagata, Nobunori Okui, Kyohei Yamaguchi
  • Patent number: 11035271
    Abstract: A control apparatus for a vehicle controls the supply of electric power from a battery to first and/or second heat generating element(s), before starting of the internal combustion engine. When a suppliable amount of electric power is equal to or less than a first amount of electric power, the control apparatus controls the supply of electric power so that a whole amount of electric power within the suppliable amount of electric power is supplied to the second heat generating element, whereas when the suppliable amount of electric power is larger than the first amount of electric power but is equal to or less than a second amount of electric power, the control apparatus controls the supply of electric power so that the whole amount of electric power within the suppliable amount of electric power is supplied to the first heat generating element.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: June 15, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yusuke Nakayama
  • Patent number: 10989158
    Abstract: A controller for an internal combustion engine includes processing circuitry. The processing circuitry executes a selecting process that selects one of a multi-injection process or a single injection process. The multi-injection process includes executing an intake synchronous injection and an intake asynchronous injection. The single injection process includes executing the intake asynchronous injection. In the intake synchronous injection, the fuel is injected in synchronization with a period in which an intake valve is open. In the intake asynchronous injection, the fuel is injected at timing advanced from timing of executing the intake synchronous injection. The processing circuitry changes ignition timing to a retarded side value in accordance with switching from execution of the multi-injection process to execution of the single injection process.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 27, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hisao Kiyono, Takayuki Omachi
  • Patent number: 10982606
    Abstract: An engine may include an engine including combustion chambers, an intake line connected to the plurality of combustion chambers and through which outside air supplied to the combustion chamber flows, an intake manifold connected to an intake side of the combustion chamber, an exhaust manifold connected to an exhaust side of the combustion chamber, an exhaust line connected to the exhaust manifold, a turbocharger including a compressor mounted in the intake line, and a turbine rotating in association with the compressor and connected to the exhaust manifold and the exhaust line, a wastegate passage bypassing the turbine from the exhaust manifold, an electric supercharger connected to the compressor of the turbocharger by the intake line, a power device electrically-connected to the electric supercharger and configured for supplying electric power to the electric supercharger or absorbing and storing electric power generated by the electric supercharger, and a controller for controlling the operation of the pow
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Hee Han, Dong Ho Chu, Kwanhee Lee, Yeongseop Park, Seungwoo Hong, Jaegu Kang, Jungjoo Park, Heechang Oh
  • Patent number: 10947884
    Abstract: The present invention is provided with: a SOx purge control unit that executes catalyst regeneration processing that maintains the temperature of a NOx occlusion/reduction catalyst at a prescribed recovery temperature; a catalyst temperature estimation unit that estimates catalyst temperature on the basis of the amount of unburnt fuel contained in exhaust and of a catalyst heat generation amount; a second exhaust temperature sensor that is arranged further to an exhaust downstream side than the catalyst and that detects exhaust temperature; and a heat generation amount correction value setting unit that, during the execution of the catalyst regeneration processing, on the basis of an estimated catalyst temperature estimated by the catalyst temperature estimation unit and of an actual exhaust temperature detected by the second exhaust temperature sensor, obtains a heat generation amount correction value that is used to correct the heat generation amount of the catalyst.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: March 16, 2021
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka
  • Patent number: 10876456
    Abstract: A vehicle is provided which includes a Stirling Cycle engine that generates a flow of exhaust gases from the external combustion of a fuel supply. The vehicle is equipped with a thermoelectric generator module which is in fluidic communication with the flow of exhaust gases generated by the Stirling Cycle engine. The thermoelectric generator module includes a thermopile array, and generates electrical energy from the thermal energy in the flow of exhaust gases.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: December 29, 2020
    Assignees: Quantum Industrial Development Corp., Texas A&M University
    Inventors: Mark A. Junio, Terry R. McCauley, Joseph S. McDowell, Victoria A. Watson, Mirley K. Balasubramanya
  • Patent number: 10837384
    Abstract: A temperature estimation module applied to a control apparatus for an internal combustion engine is configured to execute a virtual temperature estimation process that estimates a virtual temperature, which is a temperature of an exhaust purifying device under an assumption that a dither control process is not executed, based on an operation point of the internal combustion engine during execution of the dither control process. The temperature estimation module is further configured to execute an actual temperature estimation process that estimates an actual temperature of the exhaust purifying device based on a difference between the air-fuel ratio of a rich combustion cylinder and the air-fuel ratio of a lean combustion cylinder and based on the operation point of the internal combustion engine during execution of the dither control process.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: November 17, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuki Nose, Yoshiyuki Shogenji, Eiji Ikuta
  • Patent number: 10823090
    Abstract: A system of controlling an engine includes: an engine including a combustion chamber, an intake valve, an ignition switch, and an exhaust valve; a dual continuously variable valve duration device to adjust an intake duration of the intake valve and an exhaust duration of the exhaust valve; and a controller for adjusting an ignition timing of the ignition switch, the intake duration, and the exhaust duration based on a driving condition of the vehicle. In particular, until the temperature of the exhaust gas reaches a predetermined temperature after the engine starts, the controller sets the ignition timing to an ignition timing within a predetermined ignition timing range, sets the intake duration of the intake valve to an intake duration within a predetermined intake duration range, and increases the exhaust duration of the exhaust valve to a limit exhaust duration according to the set intake duration.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: November 3, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jin Woo Choung, Kiyoung Kwon
  • Patent number: 10767532
    Abstract: A method of treating exhaust gas from an internal combustion engine includes sensing a temperature of the exhaust gas with a temperature sensor, comparing the sensed temperature with a threshold temperature, injecting a first reductant into the exhaust gas at a first location if the sensed temperature is less than the threshold temperature, and injecting a second reductant having a different composition than the first reductant into the exhaust gas at a second location if the sensed temperature is greater than the threshold temperature.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: September 8, 2020
    Assignee: DEERE & COMPANY
    Inventors: Danan Dou, Shyan-Cherng Huang, Ayyappan Ponnaiyan
  • Patent number: 10731530
    Abstract: A heater is suitable to be arranged opposite and away from an upstream or downstream face of an exhaust gas purification member of a vehicle. The heater comprises a fastening ring with an electrically conductive frame having a geometric center, a central support arranged substantially at the geometric center of the frame, and a plurality of elongate heating elements each having first and second ends opposite one another. The first end is connected to the frame and the second end is connected to the central support. The fastening ring further comprises a plurality of electrically conductive radial protrusions distributed around the frame and protruding toward the outside of the frame.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: August 4, 2020
    Assignee: FAURECIA SYSTEMS D'ECHAPPEMENT
    Inventors: Xavier Pierre Fran├žois Bartolo, Christophe Tournier
  • Patent number: 10711719
    Abstract: A method of controlling activation of light off time of a catalyst which controls exhaust emission from an engine of a vehicle may include determining whether the vehicle is in a cold start condition; determining a deterioration level of the catalyst by use of a temperature sensor; and retarding a spark timing according to the deterioration level of the catalyst and increasing a temperature of exhaust gas.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 14, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyokyung Lee, Cheol Beom Lim
  • Patent number: 10690073
    Abstract: An exhaust purification system includes: an NOx reduction type catalyst; an MAF sensor; an SOx purge control unit that uses an air system control having an intake air amount feedback-controlled based on a target intake air amount and an injection system control for a target injection increase amount set based on the target intake air amount, and a fuel injection amount feedback-controlled based on the target injection increase amount; an SOx purge prohibition processing unit that prohibits an SOx purge control; and a warming mode control unit that open-loop controls an air system when the SOx purge control is prohibited, controls the fuel injection amount, and maintains the exhaust gas at a temperature. The SOx purge control unit executes the injection system control by switching the target intake air amount into an actual intake air amount when starting the SOx purge control after a warming mode control is ended.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: June 23, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka, Tomohiro Korenaga
  • Patent number: 10677125
    Abstract: An exhaust gas purification apparatus for an internal combustion engine includes the adsorbent, the catalyst and the heat generating element, wherein in cases where the residual capacity of the battery is smaller than a first predetermined value required for raising the temperature of the catalyst to an activation temperature thereof, and in cases where the residual capacity of the battery is larger than a second predetermined value which is smaller than the first predetermined value and which is required for raising the temperature of the adsorbent to a predetermined temperature at which the adsorbent exhibits adsorption performance required at the time of starting of the internal combustion engine, an amount of electric power to be supplied to the heat generating element from the battery is adjusted such that the temperature of the adsorbent becomes the predetermined temperature.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryohei Ono, Masaaki Sato, Katsuhiro Ito, Akira Mikami, Kazuhiro Umemoto, Daichi Imai
  • Patent number: 10677180
    Abstract: A first limit requesting process limits a dither control process of fuel injection valves in such a manner that the absolute value of the difference between the air-fuel ratios of the cylinders becomes smaller when the degree of variation of the injection amounts of the fuel injection valves provided for respective cylinders is great than when the degree of variation is small. A second limit requesting process limits the dither control process in such a manner that the absolute value is smaller when the torque fluctuation amount of the internal combustion engine is great than when the torque fluctuation amount is small. The limiting process limits the dither control process in accordance with one of requests generated by the first limit requesting process and the second limit requesting process that causes the absolute value to be smaller than the other.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuya Yoshikawa, Isao Nakajima, Akihiro Katayama, Ryo Suzuki, Sohichi Imai, Eiichiro Kido
  • Patent number: 10570840
    Abstract: Methods and systems for operating an engine to provide small amounts of energy to heat an aftertreatment device are described. In one example, fewer than the actual total number of engine cylinders are supplied with late post fuel injections (LPI) to heat an aftertreatment device without heating the aftertreatment device more than is desired. The engines fuel injectors may be operated at minimum fuel pulse widths to reduce fuel consumption.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: February 25, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Peter Mitchell Lyon, Nanci Ray, Joseph Goode
  • Patent number: 10487760
    Abstract: A method may comprise: positioning a pressure control valve (PCV) at an outlet of a fuel rail; positioning a volume control valve (VCV) at an inlet of a high pressure pump; and in response to an exhaust particulate matter (PM) level deviating from a target PM level, adjusting a fuel ratio of a first fuel and a second fuel delivered to an engine, and opening one of the PCV and the VCV. In this way, the fuel oxygen content may be adjusted to maintain a PM at or below a target level without a DPF over a broad range of engine designs and operating conditions, while maintaining fuel economy.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Eric Matthew Kurtz, Christopher Polonowski, James Eric Anderson, Werner Willems, Nan Robarge
  • Patent number: 10480377
    Abstract: A system and method are disclosed for improving the performance of an aftertreatment system by elevating its temperature above an activation temperature. According to at least one aspect of the present disclosure, the method includes injecting a quantity of a fuel into certain fueled cylinders of a plurality of combustion cylinders of an internal combustion engine, the plurality of combustion cylinders further including non-fueled cylinders. Exhaust from the fueled cylinders is directed through the aftertreatment system while uncombusted gas from the non-fueled cylinders is directed away from the aftertreatment system. In certain embodiments, the uncombusted gas may be directed into an intake manifold in fluid communication with the plurality of combustion cylinders through an orifice. The system includes an engine having exhaust valves to control flow of the exhaust and uncombusted gas and a controller configured to perform the operations of the method.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: November 19, 2019
    Assignee: Cummins Inc.
    Inventors: Paul Douglas Free, Jennifer Kay Light-Holets, Vaibhav Daramwar, David A. Brush
  • Patent number: 10458300
    Abstract: An engine system may include an intake line, and a cylinder deactivation (CDA) device selectively deactivating a portion of combustion chambers in the engine. The engine system may further include a first exhaust manifold connected to a first plurality of combustion chambers mounted with the CDA device, a second exhaust manifold connected to a second plurality of combustion chambers without the CDA device, a first exhaust line connected to the first exhaust manifold, a second exhaust line connected to the second exhaust manifold, and a third exhaust line connected with the first and second exhaust lines through an exhaust gas processing device. In addition, a turbocharger including a turbine is mounted at the first exhaust line and rotated by exhaust gas. An air injection device may supply air to the second exhaust manifold or the second exhaust line in a catalyst heating mode of the exhaust gas processing device.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 29, 2019
    Assignee: Hyundai Motor Company
    Inventors: Hyungbok Lee, Jong Il Park, Kwanhee Choi, Joowon Lee, Dong Hee Han, Hyun Jun Lim
  • Patent number: 10428785
    Abstract: An engine controller controls a direct fuel-injection, spark ignition engine including a fuel injection valve configured to directly inject a fuel into a cylinder, and an ignition plug that spark-ignites a mixture in the cylinder. The engine controller is provided with an acceleration request sensor configured to detect an acceleration request of a driver, and when the acceleration request occurs and a top surface temperature of a piston in the cylinder is lower than a predetermined temperature, the engine controller retards an ignition timing so that a period of time until a flame after the ignition reaches the piston top surface is extended.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: October 1, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro Imaoka, Takeshi Tsuyuki, Takao Inoue
  • Patent number: 10408171
    Abstract: A method of cleaning an EGR valve operatively connected to an exhaust flow from an engine includes determining when cleaning is required, and when cleaning is required, operating the engine in a high temperature mode in which the temperature of exhaust gas exiting the engine is increased while producing a flow of exhaust gas having a low unburnt hydrocarbon content. The method further includes opening the EGR valve to allow hot exhaust gas to flow therethrough so as to remove combustion by-products that are fouling the EGR valve. Furthermore, the method includes producing an estimate of accumulated combustion by-product fouling of the EGR valve. The estimate is then used to determine whether and when to clean the EGR valve.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: September 10, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Jon Dixon, Jim Bromham, Sean Gordon Harman
  • Patent number: 10378471
    Abstract: A control for an internal combustion engine makes an air-fuel ratio in at least one of a plurality of cylinders equal to a rich air-fuel ratio smaller than a theoretical air-fuel ratio, makes an air-fuel ratio in each of the other remaining ones of the plurality of the cylinders equal to a lean air-fuel ratio larger than the theoretical air-fuel ratio, executes a temperature raising process for raising a temperature of a catalyst that purifies exhaust gas from the plurality of the cylinders, executes a detection process for detecting a degree of dispersion of the air-fuel ratio among the plurality of the cylinders, and executes a determination process for determining, based on the detected degree of dispersion, whether or not a plurality of fuel injection valves corresponding to the plurality of the cylinders respectively are normal, and executes the detection process while avoiding a period of the temperature raising process.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: August 13, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Nakamura, Yuki Nose, Eiji Ikuta
  • Patent number: 10371073
    Abstract: A vehicle system includes: an engine including a combustion chamber in which an air-fuel mixture is burned to generate energy, an intake manifold which supplies air to the combustion chamber, an injector which supplies fuel to the combustion chamber, and an exhaust manifold which discharges exhaust gas generated by combustion of the air-fuel mixture through an exhaust pipe; a hybrid starter and generator (HSG) which generates electricity by starting the engine or by using energy generated in the engine; a soot filter which is mounted to the exhaust pipe and collects particulate matters (soot) included in exhaust gas; and a control unit which controls an operation of the injector and controls an operation of the HSG, in which when the quantity of soot is larger than a predetermined quantity, the control unit increases a size of a load of the HSG by a predetermined load quantity until a temperature of the soot filter reaches a predetermined temperature.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 6, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Hwa Yong Jang
  • Patent number: 10344693
    Abstract: A control apparatus for a gasoline engine having a fuel injection means including an in-cylinder injection valve. The control apparatus comprises a controller configured to, when warming up an exhaust gas purification catalyst provided in an exhaust passage provided of the gasoline engine, control the fuel injection means to conduct one or more main injections, control the in-cylinder injection valve to conduct a post injection, perform a retard correction of an ignition timing at which fuel injected by the one or more main injections is ignited, determine an injection quantity by the one or more main injections and an injection quantity by the post injection such that an air-fuel mixture formed in the cylinder by gasoline fuel injected by the one or more main injections has a predetermined lean air-fuel ratio at which a difference between an actual output torque and a required torque is within a predetermined allowable range.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: July 9, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takanobu Hosoya, Norihisa Nakagawa, Koichi Kimura, Takuya Okubo
  • Patent number: 10344701
    Abstract: An engine system includes an engine that, a fuel supply device, and an electronic control unit. The electronic control unit is configured to control the fuel supply device and to perform operation control of the engine by adjusting an injection ratio between fuel injection from an in-cylinder injection valve and a port injection valve according to the operation state of the engine. The electronic control unit is configured to perform imbalance determination. The electronic control unit is configured to change a region of fuel injection from a first fuel injection region to a second fuel injection region when the electronic control unit determines that a lean imbalance is occurred with respect to the fuel injection in which the fuel injection from the port injection valve is performed.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: July 9, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeshi Genko, Daigo Ando, Chisa Watanabe, Shinya Kondo, Takahiro Nishigaki
  • Patent number: 10309328
    Abstract: An exhaust emission control system of an engine is provided, which includes a NOx catalyst disposed in an exhaust passage for storing NOx within exhaust gas when an air-fuel ratio of the exhaust gas is lean, and reducing the stored NOx when the air-fuel ratio is approximately stoichiometric or rich. A processor executes a NOx reduction controlling module for performing, when the NOx stored amount exceeds a given amount, a NOx reduction control in which a fuel injector performs a post injection of fuel to continuously control the air-fuel ratio to a target ratio so that the stored NOx is reduced to be below a given amount, the target air-fuel ratio being a ratio at which the stored NOx is reducible, the post injection causing the injected fuel to combust inside a cylinder, the execution of the control permitted when an engine load is within a medium load range.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 4, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Takayuki Yamaguchi, Takashi Tanaka, Kota Matsue, Hiroshi Hayashibara, Yoshiaki Tomita, Kaoru Yamada, Masayuki Tetsuno, Daishi Ikeda, Kazunori Hirasawa, Masanobu Kanno
  • Patent number: 10309286
    Abstract: In a hybrid vehicle that includes an engine having a particulate matter removing filter configured to remove particulate matters in an exhaust system, when an increase in temperature of the particulate matter removing filter is requested in order to regenerate the particulate matter removing filter, dither control is executed to execute control such that an air-fuel ratio of the engine is repeated between a rich state and a lean state. Then, when the dither control is executed, control is executed such that the engine is operated at an operation point where the increase in temperature of the particulate matter removing filter is promoted among operation points where power output from the engine is retainable.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: June 4, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuya Miyaji, Takashi Suzuki
  • Patent number: 10295245
    Abstract: A refrigeration device, including a cabinet, a door body, a drawer, a first snap assembly, and a second snap assembly. The door body is provided to the cabinet in a drawable manner; the drawer is detachably provided to the door body, the first snap assembly is adapted to limit the door body at a first position where the door body can be fixed to the cabinet, the second snap assembly is adapted to limit the door body at a second position where the door body can be fixed to the cabinet, during the process that the door body is pulled out of the cabinet, the door body passes through the first position and the second position in sequence, when the first snap assembly fails, the drawer is adapted to be taken out of the door body, and when the second snap assembly fails, the door body is adapted to be separated from the cabinet.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 21, 2019
    Assignees: HEFEI HUALING CO., LTD., MIDEA GROUP CO., LTD.
    Inventors: Jun Yao, Dongxian Liu
  • Patent number: 10247115
    Abstract: A system and method for increasing engine heating rate to facilitate early introduction of exhaust gas recirculation after a cold start include operating an electric machine connect to the engine to apply a load to the engine. The electric machine may be operated as a generator to produce an increased engine torque demand and increase the rate of engine heating until an engine temperature and an exhaust temperature exceed corresponding thresholds. Operation of the electric machine as a generator may be stopped in response to a battery state of charge exceeding a threshold, or engine load exceeding a threshold.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: April 2, 2019
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Paspuleti Ashish Kumar Naidu, Ian Halleron, Peter George Brittle, James Wright
  • Patent number: 10202920
    Abstract: In an exhaust gas control system for an internal combustion engine operable at a lean air-fuel ratio, after a request to stop the internal combustion engine has been issued, the internal combustion engine is operated at a stoichiometric air-fuel ratio or lower until an air-fuel ratio in an SCR catalyst becomes lower than or equal to the stoichiometric air-fuel ratio, and then supply of fuel to the internal combustion engine is stopped.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: February 12, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takayoshi Tanaka, Yoshihisa Shinoda
  • Patent number: 10174699
    Abstract: When the air fuel ratio dither control is carried out, an air fuel ratio of a mixture in each of one or more lean cylinders and one or more rich cylinders is controlled so that an average value of an air fuel ratio of exhaust gas flowing into the three-way catalyst becomes a predetermined target exhaust gas air fuel ratio. At this time, the air fuel ratio dither control is carried out by setting, as the one or more rich cylinders, at least a cylinder for which a degree of uniformity of the flow speed distribution of exhaust gas, which is a degree of uniformity of the flow speed distribution of exhaust gas discharged from that cylinder on a cross section of the three-way catalyst, is the lowest in the cylinder group of an internal combustion engine.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: January 8, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuya Suzuki, Koichi Hoshi
  • Patent number: 10174706
    Abstract: A method is described of injecting fuel into an internal combustion engine. The internal combustion engine utilises direct fuel injection and comprises a plurality of cylinders, each of which has an associated piston. The method comprises simultaneously applying different injection patterns to at least two of the cylinders in dependence on initial positions of their respective pistons. The method comprises injecting a first cylinder of the internal combustion engine according to an optimum injection pattern, and, simultaneously, injecting a second cylinder of the internal combustion engine according to a start-up injection pattern. The start-up injection pattern is determined in dependence on the optimum injection pattern and the initial position of the piston associated with said second cylinder.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: January 8, 2019
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventor: Adam Moorcroft
  • Patent number: 10160646
    Abstract: Provided is a waste heat recovery apparatus including a first heat exchanger, a reformer and a reformer feed pre-heater sequentially disposed on or in the waste gas exhaust pipe from the upstream to the downstream thereof, wherein the waste gas temperature at the upstream of the waste gas exhaust pipe is higher than that at the downstream. In an embodiment, the reformer can be a hydrogen-generation reformer, and the generated hydrogen is introduced into the burning equipment for use. In such manner, the waste heat can be effectively utilized, and the carbon deposition issue inside the burning equipment can be fixed. A waste heat recovery method is also provided.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: December 25, 2018
    Assignee: Industrial Technology Research Institute
    Inventors: Yu-Li Lin, Ting-Wei Huang, Meng-Chang Lin
  • Patent number: 10113469
    Abstract: A method for preventing overheating of a diesel particulate filter during regeneration when an engine is idling may include using an electric machine to apply a load to the engine and compensating for the increase in applied load by increasing an engine torque set point to reduce the concentration of Oxygen in the exhaust gas flowing to the diesel particulate filter. Increased engine torque may be provided by adjusting air-fuel ratio by enriching an air-fuel mixture supplied to the engine and the diesel particulate filter. The control may be initiated in response to entering an idle mode during regeneration or in response to a measured or estimated temperature of the diesel particular filter exceeding a threshold or limit. Estimated temperature may be predicted using a soot combustion model.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: October 30, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Paspuleti Ashish Kumar Naidu, James Wright, Peter George Brittle, Matthew Mitchell
  • Patent number: 9976496
    Abstract: The present invention describes a fuel-management system for minimizing particulate emissions in turbocharged direct injection gasoline engines. The system optimizes the use of port fuel injection (PFI) in combination with direct injection (DI), particularly in cold start and other transient conditions. In the present invention, the use of these control systems together with other control systems for increasing the effectiveness of port fuel injector use and for reducing particulate emissions from turbocharged direct injection engines is described. Particular attention is given to reducing particulate emissions that occur during cold start and transient conditions since a substantial fraction of the particulate emissions during a drive cycle occur at these times. Further optimization of the fuel management system for these conditions is important for reducing drive cycle emissions.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 22, 2018
    Assignee: Ethanol Boosting Systems, LLC
    Inventors: Daniel R. Cohn, Leslie Bromberg