Having Electrically Actuated Control Means Patents (Class 123/568.21)
  • Patent number: 10125700
    Abstract: There is disclosed system and methods that maintain efficiency of an aftertreatment component during a motoring event or condition of an internal combustion engine while also lowering oil consumption and particulate number emissions.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: November 13, 2018
    Assignee: Cummins Inc.
    Inventors: Timothy Lee Antcliff, Vijai Raghunathan, Norbert J. Rehm, IV, Vaibhav Daramwar, John C. Stetter, Mostafa M. Kamel
  • Patent number: 10125704
    Abstract: An engine system having an ERG apparatus may include an engine including a plurality of combustion chambers generating a driving torque by combustion of a fuel; an intake line inflowing an intake gas supplied to the combustion chamber; an exhaust line flowing an exhaust gas exhausted from the combustion chamber; a turbocharger including a turbine provided at the exhaust line and rotated by the exhaust gas exhausted from the combustion chamber and a compressor provided at the intake line, rotated in connection with the turbine, and compressing external air; and an EGR apparatus including a recirculation line branched from the exhaust line and joined to the intake line, a flow rate controller mounted at the recirculation line and measuring and controlling an amount of recirculation gas, and a pressure sensor mounted at the recirculation line to measure a pressure of the recirculation gas.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: November 13, 2018
    Assignee: Hyundai Motor Company
    Inventor: Choo Saeng Choi
  • Patent number: 10100759
    Abstract: An exhaust gas recirculation control device controls an exhaust gas recirculation device that includes an exhaust gas recirculation passage adapted to circulate a portion of exhaust gas of an internal combustion engine from an exhaust passage downstream of a turbine of a turbo supercharger along an exhaust flow to an intake passage upstream of a compressor of the turbo supercharger along an intake flow and downstream of an air flow meter along the intake flow, and a recirculation control valve adapted to adjust an amount of exhaust gas circulated to the intake passage. Furthermore, the exhaust gas recirculation control device includes recirculation ratio setting means adapted to set a lower target recirculation ratio for a smaller intake air amount of the internal combustion engine.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 16, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Daisuke Takaki, Hirofumi Tsuchida, Kazuhiko Sugawara
  • Patent number: 10087858
    Abstract: A vehicle includes an engine and an electric power output device that is configured to output electric power generated by using the engine to the outside of the vehicle. The engine includes an EGR device for recirculating exhaust gas of the engine to an intake side. The vehicle further includes a controller for controlling a recirculation amount of the exhaust gas by the EGR device in accordance with a load of the engine. The controller restricts the recirculation amount of the exhaust gas under the same load in the case where the electric power output device outputs the electric power to the outside of the vehicle in comparison with a case where the electric power output device does not output the electric power to the outside of the vehicle.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 2, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hitoki Sugimoto
  • Patent number: 10047656
    Abstract: The disclosure relates to internal combustion engines in general, and teaches various methods and apparatus for operating engines with an exhaust-gas turbocharger. Some embodiments include a method for operating an internal combustion engine having a fresh-gas tract for the supply of fresh gas to a cylinder, and an exhaust tract for the discharge of exhaust gas. They may include determining a value of a first operating condition of a catalytic converter arranged in the exhaust tract; determining a value of a second operating condition of the catalytic converter; calculating, as a function of the determined value, a first value for a maximum admissible scavenged-over quantity of fresh gas into the exhaust tract during scavenging operation; and setting the maximum admissible scavenged-over quantity to a second value lower than the first value if the value of the second operating condition reaches a predefined value.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 14, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Matthias Delp
  • Patent number: 9957923
    Abstract: The invention concerns a device for recirculation of exhaust gases from an engine (1) of a motor vehicle, comprising a first exhaust gas recirculation line (9) called an EGR line, a first heat exchanger (10) provided on said EGR line (9) to ensure cooling of the recirculated exhaust gases, and treatment means (11) for the exhaust gases allowing limitation of the pH of the condensate arising from said gases. The treatment means (11) are provided upstream of the first exchanger (10) along the path of the exhaust gases, and the exchanger (10) comprises a heat exchanger bundle made of aluminum and/or aluminum alloy.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: May 1, 2018
    Assignee: VALEO SYSTEMES THERMIQUES
    Inventors: Guillaume Bourgoin, Bertrand Gessier
  • Patent number: 9932917
    Abstract: An engine control system for a vehicle includes a flowrate module, first and second mass fraction calculating modules, and an actuator control module. The flowrate module determines a mass flowrate of exhaust gas recirculation (EGR) to an engine. The first mass fraction calculating module, based on the mass flowrate of EGR, determines a first mass fraction of recirculated exhaust gas relative of a first gas charge for a first combustion event of the engine. The second mass fraction calculating module determines a second mass fraction of recirculated exhaust gas of a second gas charge for a second combustion event of the engine based on an average of the first mass fraction and one or more other values of the first mass fraction determined for other combustion events, respectively. The actuator control module selectively adjusts an engine operating parameter based on the second mass fraction.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: April 3, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Vijay Ramappan, Darrell W. Burleigh, Martino Casetti
  • Patent number: 9885297
    Abstract: An internal combustion engine includes an air charging system with a boost air system. A method to control the boost air in the air charging system, decoupled from the air and EGR system controls, includes monitoring a reference boost pressure and operating parameters of the air charging system; creating a turbocharger energy balance model of the air charging system; applying feedback linearization control to the turbocharger energy balance model to create an approximately linearized feedback system; and determining a boost control command for the air charging system using the approximately linearized feedback system based on the monitored reference boost pressure and the monitored operating parameters of the air charging system. The boost air in the air charging system is controlled based upon the boost control command.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: February 6, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yue-Yun Wang, Ibrahim Haskara, Vincenzo Alfieri, Giuseppe Conte
  • Patent number: 9879596
    Abstract: An actuator assembly moves an output shaft. The actuator assembly includes a housing having at least first, second, and third sections at least partially defining first and second cavities, with the third section between the first and second sections. A motor assembly has a rotatable drive shaft and is coupled to the third section. The motor assembly is at least partially disposed in the first cavity and the drive shaft is at least partially disposed in the second cavity. At least one drive gear is within the second cavity and is fixed to the drive shaft. At least one driven gear is within the second cavity and is coupled with the output shaft. The at least one driven gear is coupled to the third section of the housing and is rotatably coupled with the at least one drive gear to transmit rotation from the drive shaft to the output shaft.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: January 30, 2018
    Assignee: BORGWARNER INC.
    Inventors: Martin P. Bogen, Robert D. Keefover, James C. Sharpe, Brian C. Wightman
  • Patent number: 9879630
    Abstract: Rationality diagnostic techniques for an intake oxygen sensor are utilized to detect sensor malfunction. A non-intrusive diagnostic technique includes passively detecting when an exhaust gas recirculation (EGR) valve position crosses low/high position thresholds, whereas an intrusive diagnostic technique includes actively commanding the EGR valve to predetermined low/high positions. During a period after the EGR valve position reaches/crosses at least one of the low/high positions/position thresholds, respectively, maximum and minimum intake oxygen concentration is monitored. When the EGR valve position has crossed both the low/high positions/position thresholds and a difference between the maximum and minimum oxygen concentrations is less than a respective difference threshold, a malfunction of the intake oxygen sensor is detected. A malfunction indicator lamp (MIL) could be set to indicate the malfunction.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: January 30, 2018
    Assignee: FCA US LLC
    Inventors: Yichao Guo, Robert Stack, Zhijian J Wu
  • Patent number: 9874165
    Abstract: An exhaust gas recirculation device capable of restraining generation of condensate water in an EGR path after engine stoppage is provided. When ignition is switched from ON to OFF, fuel injection is prohibited. As a result, a gas (fresh air) that flows into a cylinder after the switching is discharged into an exhaust passage without burning. In the present invention, a valve opening timing of an exhaust valve is changed so that a high peak portion of a pulsation of the gas arises at an EGR branch point, and the EGR valve is opened. Thereby, the fresh air flowing in the exhaust passage can be introduced into an EGR passage, and therefore an EGR gas in the EGR passage can be replaced with the fresh air.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: January 23, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Fumio Takamiya
  • Patent number: 9850830
    Abstract: An internal combustion engine includes an air charging system with a boost air system. A method to control the boost air in the air charging system, decoupled from the air and EGR system controls, includes monitoring a reference boost pressure and operating parameters of the air charging system; creating a turbocharger energy balance model of the air charging system; applying feedback linearization control to the turbocharger energy balance model to create an approximately linearized feedback system; and determining a boost control command for the air charging system using the approximately linearized feedback system based on the monitored reference boost pressure and the monitored operating parameters of the air charging system. The boost air in the air charging system is controlled based upon the boost control command.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: December 26, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yue-Yun Wang, Ibrahim Haskara, Vincenzo Alfieri, Giuseppe Conte
  • Patent number: 9810180
    Abstract: The EGR cooling structure includes a cylinder block having cylinders, and a cylinder head into which exhaust gas exhausted from the cylinders is collected. An exhaust emission control device is provided for purifying the exhaust gas exhausted from the cylinder head, and an EGR pipe is provided through which EGR gas of a part of the purified exhaust gas is introduced into an intake system. An EGR cooler is provided in the EGR pipe and cools the EGR gas with the cooling liquid. An exhaust gas passage leading from the cylinders to the exhaust gas purification device is curved when seen from a side, and the EGR cooler is disposed in the space surrounded by the cylinder block, the cylinder head, and the exhaust gas purification device.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: November 7, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Nobuyuki Yoshida, Hiroshi Takemoto, Taichi Yoshikawa
  • Patent number: 9784195
    Abstract: A technique is provided for compensating an untrimmed oxygen (O2) sensor utilized in operation of an exhaust gas recalculation (EGR) system associated with an engine. The technique includes, in one implementation, receiving a measurement from the O2 sensor at a known pressure, where the O2 sensor is positioned on an intake side of an engine system. Humidity compensation and pressure compensation are then determined for the O2 sensor measurement, where the pressure compensation is based in part on the humidity compensation. The EGR system is controlled using the untrimmed O2 sensor measurement that has been compensated for pressure and humidity.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: October 10, 2017
    Assignee: FCA US LLC
    Inventors: Ayman M Ismail, Ethan E Bayer, John R Bucknell
  • Patent number: 9719441
    Abstract: A control device for a compression ignition engine includes a controller configured to operate an engine body by compression ignition combustion when the engine body operates in a predetermined compression ignition range. When the engine body operates in a predetermined high load range of the compression ignition range, the controller maximizes a filling amount of the cylinder using a gas state adjustment system, and lowers an EGR ratio so that the air-fuel mixture in the cylinder is lean with an excess air ratio ? higher than 1 in a lower speed range, and maximizes the filling amount of the cylinder, and increases the EGR ratio so that the air-fuel mixture in the cylinder has the excess air ratio ? of 1 or lower in a higher speed range than the lower speed range.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: August 1, 2017
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kazuhiro Nagatsu, Atsushi Inoue, Kota Matsumoto, Takashi Kaminaga, Toru Miyamoto, Takashi Youso
  • Patent number: 9696220
    Abstract: A malfunction diagnosis apparatus includes: a first temperature detector; a second temperature detector that is placed in a different location from where the first temperature detector is placed; a difference value calculation device calculates a difference value between a detection value from the first temperature detector and a detection value from the second temperature detector; a mapping device carries out mapping of the difference value and calculates a correction value using the frequency of the difference value; a malfunction diagnosis device diagnoses whether or not there is a malfunction in the first temperature detector and the second temperature detector; and a recovery device calculates, as a detection value of the first or second temperature detector judged to be malfunctioning, a value by adding the correction value to a detection value from the first or second temperature detector judged not to be malfunctioning.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: July 4, 2017
    Assignee: Toshiba Alpine Automotive Technology Corporation
    Inventors: Hiroki Shimizu, Keita Taniguchi
  • Patent number: 9677452
    Abstract: An object of the invention is to suppress a reduction in accuracy of abnormality diagnosis with an abnormality diagnosis device for an exhaust gas control apparatus that performs the abnormality diagnosis regarding the exhaust gas control apparatus by using the amount of NOx flowing into an SCR catalyst as a parameter.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: June 13, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomoyuki Kogo, Makoto Ogiso, Taiga Hagimoto, Arifumi Matsumoto, Kazuya Takaoka, Hirokazu Nishijima, Kenji Furui
  • Patent number: 9670855
    Abstract: A system and method are disclosed for controlling the temperature of an aftertreatment system, the method including interpreting an aftertreatment indicating temperature, determining that an engine fueling requirement is zero, and disengaging the engine from a transmission in response to the aftertreatment indicating temperature falling below a first threshold value and in response to the engine fueling requirement being zero, where the engine and the transmission comprise a portion of a vehicle powertrain. Alternatively, the method may include interpreting an aftertreatment indicating temperature, determining that an engine fueling requirement is zero, and performing a reduced air flow operation through the engine in response to the aftertreatment indicating temperature falling below a first threshold value and in response to the engine fueling requirement being zero.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: June 6, 2017
    Assignee: Cummins Inc.
    Inventors: Jonathan A. Dickson, Michael J. Ruth
  • Patent number: 9617938
    Abstract: An abnormality diagnosis apparatus includes: an exhaust gas purification apparatus arranged in an exhaust passage of an internal combustion engine and including a selective catalytic reduction catalyst; a supply apparatus supplying an additive such as ammonia to the exhaust gas purification apparatus; an EGR apparatus recirculating a part of exhaust gas from the exhaust passage at a downstream side of a position of supplying the additive to an intake passage; calculating means for calculating a NOx inflow amount into the exhaust gas purification apparatus using a parameter indicating an operating state of the internal combustion engine; diagnosing means for diagnosing an abnormality in the exhaust gas purification apparatus using the calculated NOx inflow amount as a parameter; and correcting means for, when a part of the exhaust gas is recirculated, increasingly correcting the calculated NOx inflow amount in accordance with an amount of the additive to be recirculated together with exhaust gas.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 11, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomoyuki Kogo, Makoto Ogiso, Kazuya Takaoka, Taiga Hagimoto, Arifumi Matsumoto, Hirokazu Nishijima, Kenji Furui
  • Patent number: 9593632
    Abstract: A method of operating an Exhaust Gas Recirculation (EGR) valve of an engine is provided. The method includes monitoring an operating condition of the engine based at least on a speed of the engine and a load of the engine. The method also includes determining an amount of Carbon Monoxide (CO) in an exhaust from the engine and comparing the amount of CO with a threshold CO value. The method further includes adjusting open loop parameters of the EGR valve based on the comparison during a predetermined operating condition for the engine. The EGR valve is controlled based on the open loop parameters during switching between a closed loop control and an open loop control of the EGR valve.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: March 14, 2017
    Assignee: Caterpillar Inc.
    Inventor: Xinyu Ge
  • Patent number: 9534533
    Abstract: A control device and method for the air system of a diesel engine is disclosed. The feature of the diesel engine is characterized by transfer function. During the control process, a decoupling transfer function is computed according to the transfer function and the steady working parameters of the diesel engine. By the decoupling transfer function acting on the processed state parameters of the air system, driving signals for controlling the exhaust gas recirculation system and the turbocharge system can be individually generated from one another, in order to realize decoupling of them.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: January 3, 2017
    Assignee: Weichai Power Co., Ltd.
    Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Shenggang Guo, Yingli Gong
  • Patent number: 9506426
    Abstract: Systems and methods are provided for recycling internal combustion engine feedgas exhaust emissions during cold-start conditions. By adjusting a restriction valve provided in an exhaust passage upstream of a catalytic converter, an amount of engine exhaust flowing through the catalytic converter prior to the catalytic converter reaching its operational temperature may be reduced.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: November 29, 2016
    Assignee: Ford Global Technologies, LLC
    Inventor: Enrique Remes
  • Patent number: 9488135
    Abstract: A flow rate controller of an internal combustion engine includes a flow rate change section configured by including an EGR valve, a bypass valve, and a diesel throttle, as the flow rate change section capable of changing at least one of a flow rate of exhaust gas that is recirculated to an intake system from an exhaust system of an internal combustion engine via an EGR passage and a flow rate of fresh air that flows into the internal combustion engine. In addition, an ECU is included to realize: an arrival position determining section for determining an arrival position of condensed water in the EGR passage that is moved by the EGR at least either at the time of acceleration or at the time of deceleration of the internal combustion engine; and a control section for controlling the flow rate change section on the basis of the arrival position determined by the arrival position determining section.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: November 8, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira Yamashita, Kazuhiro Mori, Koichiro Nakatani, Hisashi Ohki
  • Patent number: 9470166
    Abstract: EGR gas quantity information, which indicates a quantity of the EGR gas flowing into a cylinder of an internal combustion engine, is obtained by an ECU. A combustion stop delay control operation, which delays execution of a combustion stop control operation, is executed by the ECU when the quantity of the EGR gas flowing into the cylinder is larger than a normal combustion determination threshold value. When the quantity of the EGR gas flowing into the cylinder becomes equal to or smaller than the normal combustion determination threshold value, the combustion stop control operation is enabled by the ECU.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: October 18, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hiroki Nogami, Hiroyuki Takezoe, Hiroshi Katsurahara
  • Patent number: 9464586
    Abstract: An exhaust gas recirculation control device of an engine is provided. The device includes: an exhaust turbocharger having a turbine disposed in an exhaust passage and a compressor disposed in an intake passage; an intercooler disposed in the intake passage downstream of the compressor; a low-pressure EGR passage connecting the exhaust passage downstream of the turbine to the intake passage upstream of the compressor; a low-pressure EGR valve disposed in the low-pressure EGR passage and for changing a cross-sectional area thereof; a high-pressure EGR passage connecting the exhaust passage upstream of the turbine to the intake passage downstream of the intercooler; a high-pressure EGR valve disposed in the high-pressure EGR passage and for changing a cross-sectional area thereof; a valve control device for controlling openings of the low-pressure and high-pressure EGR valves; and a gear range detector for detecting a gear range of a transmission.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: October 11, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Kota Maekawa, Kenji Tanimura, Eiji Nakai, Motoshi Kataoka, Masanobu Kanno
  • Patent number: 9458785
    Abstract: While an engine is an idling state and an EGR opening degree is increased stepwise from a specified opening degree, a variation in engine speed (a standard deviation in engine speed) is repeatedly computed. After that, a specified step amount is successively reduced from the EGR opening degree and the variation in engine speed is successively computed until the EGR opening degree becomes less than or equal to a specified value. Then, a maximum value of the EGR opening degrees where the variation in engine speed becomes minimum is learned as the full-close position.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: October 4, 2016
    Assignee: DENSO CORPORATION
    Inventors: Hideaki Ichihara, Hiroki Nogami, Hiroshi Katsurahara, Hiroyuki Takezoe
  • Patent number: 9371781
    Abstract: A method for reducing a nitrogen oxide emission in a diesel engine. The method can include taking at least one exhaust gas of an in engine combustion in a combustion chamber and: segmenting a first portion of exhaust gas enters as an internal exhaust gas recirculation from the combustion chamber of the diesel engine via an outlet valve associated with the combustion chamber, and is recirculated, via the outlet valve, from the subsequent exhaust gas tract, into the combustion chamber of the diesel engine; segmenting a second portion of exhaust gas remains in the combustion chamber and is not expelled; and segmenting a third portion of exhaust gas is recirculated as external exhaust gas recirculation via an exhaust gas recirculation valve into the combustion chamber.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 21, 2016
    Assignee: FEV GMBH
    Inventor: Thorsten Schnorbus
  • Patent number: 9359944
    Abstract: The present disclosure relates to a method for controlling an exhaust gas recirculation apparatus for heavy construction equipment, and more particularly, to a method for controlling an exhaust gas recirculation apparatus for heavy construction equipment, capable of controlling exhaust gas at an appropriate pressure at an appropriate step when making exhaust gas discharged from an engine flow into the engine together with fresh gas.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: June 7, 2016
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Ji Hoon Lim, Min Seok Ko
  • Patent number: 9328698
    Abstract: Systems and methods are provided for adjusting an engine powertrain component responsive to ambient humidity, the ambient humidity based on vehicle position in a region, clock time ambient temperature, and historical humidity data for that region for a current time of year. This may be accomplished without relying on a costly, and often, temperamental physical humidity sensor. Training modules and cloud updates may further increase the accuracy of the virtual humidity sensor of the present disclosure.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: May 3, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Perry Robinson MacNeille, David Charles Weber
  • Patent number: 9267453
    Abstract: Methods and systems are provided for improving accuracy of delta pressure over valve (DPOV) based EGR flow measurement during low valve lift conditions by learning errors in EGR valve lift and/or EGR valve flow transfer function.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: February 23, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Daniel Joseph Styles, James Alfred Hilditch, Imtiaz Ali
  • Patent number: 9228511
    Abstract: This disclosure provides a system and method for controlling internal combustion engine system to reduce operation variations among plural engines. The system and method utilizes single-input-single-output (SISO) control in which a single operating parameter lever is selected from among exhaust gas recirculation (EGR) fraction and charge air mass flow (MCF), and a stored reference value associated with the selected lever is adjusted for an operating point in accordance with a difference between a measured emissions characteristic and a pre-calibrated reference value of the emissions characteristic for that operating point. Adjusting the selected operating parameter lever towards the theoretical pre-calibrated reference value of the operating parameter lever for each of plural operating points can reduce engine-to-engine variations in engine out emissions.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: January 5, 2016
    Assignee: CUMMINS INC.
    Inventors: Yongjie Zhu, Vivek J. Sujan, Govindarajan Kothandaraman, Timothy R. Frazier
  • Patent number: 9206756
    Abstract: A method and related apparatuses and systems for operating an engine that provides a high level of NOX to regenerate particulate matter deposited on a particulate filter. The method includes producing NOX in response to a NOX excess capacity value of a NOX reduction device. The method optionally includes determining that particulate matter exceeds an enhanced passive regeneration threshold amount before providing a high level of NOX. The method optionally includes producing a higher particulate emissions output value to warm the engine exhaust to bring an aftertreatment catalyst to an optimal operating temperature. The method can be implemented with a closed loop feedback controller, which may be configured to reduce particulate matter variation.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: December 8, 2015
    Assignee: Cummins Inc.
    Inventors: Yongjie Zhu, Vivek A. Sujan, Timothy R. Frazier
  • Patent number: 9206759
    Abstract: When the difference by which pressure in an engine exhaust manifold exceeds pressure in an engine intake manifold becomes less than a selected difference while an intake valve operating mechanism is closing cylinder intake valves at a selected time in the engine cycle, while an EGR system is conveying the engine exhaust component of an air/exhaust mixture from an exhaust system to an intake system, and a certain quantity of NOx is present in engine exhaust entering the exhaust manifold, the quantity of NOx present in engine exhaust entering the exhaust manifold is reduced below that certain quantity by causing the intake valve operating mechanism to close the cylinder intake valves earlier in the engine cycle than the selected time.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: December 8, 2015
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Laura M. Ricart-Ugaz, Qianfan Xin, Daniel Cornelius, Luis Carlos Cattani
  • Patent number: 9175629
    Abstract: A method and system for providing a suitable engine torque response during a transient condition is presented. In one example, when a desired inlet manifold pressure is greater than a throttle inlet pressure of a first throttle, a second throttle positioned upstream from the first throttle is opened to increase the throttle inlet pressure. The method may provide an appropriate torque response while minimizing impact on fuel economy.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: November 3, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Ralph Wayne Cunningham, Matthew John Gerhart, Julia Helen Buckland, Suzanne Kay Wait, Michael Howard Shelby, Jeffrey Allen Doering, Mrdjan J. Jankovic, John Eric Rollinger, Gopichandra Surnilla, Naginder Gogna
  • Patent number: 9133764
    Abstract: A six-stroke engine system including an engine with a combustion chamber including an exhaust valve that expels exhaust gasses during an exhaust stroke, and a blowdown exhaust valve that expels blowdown exhaust gasses during recompression. An intake line directs air into the combustion chamber, and an exhaust line directs exhaust gasses from combustion chamber. A blowdown exhaust line directs blowdown exhaust gasses out of the combustion chamber and into the intake line. The blowdown exhaust gasses are expelled through the blowdown exhaust valve during recompression, and exhaust gasses are expelled through the exhaust valve during the exhaust stroke.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: September 15, 2015
    Assignee: Caterpillar Inc.
    Inventors: Scott B. Fiveland, D. Ryan Williams
  • Patent number: 9127609
    Abstract: A method for controlling a vehicle's exhaust gas recirculation system. The method controls the exhaust gas recirculation system in a manner that is suitable for a pedal tip-out transition while also being optimized for normal operating situations.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: September 8, 2015
    Assignee: FCA US LLC
    Inventor: Songping Yu
  • Patent number: 9068502
    Abstract: A system and method for measuring an EGR flow rate for an engine having an EGR valve with a selectable EGR valve position and a venturi sensor situated to take a differential pressure measurement relative to recirculated exhaust gas includes determining an EGR valve effective area based on the EGR valve position, determining a weighting factor based on the effective area, calculating a first EGR flow estimate based on the effective area, and calculating a second EGR flow estimate based on the differential pressure measurement of the venturi sensor. A final EGR flow rate is determined based on the weighting factor, the first EGR flow estimate, and the second EGR flow estimate.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: June 30, 2015
    Assignee: Caterpillar Inc.
    Inventors: Gurpreet Gambhir, Rammohan Sankar, Travis Barnes, Zenebe Gete
  • Patent number: 9027530
    Abstract: A method of calibration of at least one fuel injector for a fuel burner in an exhaust gas treatment system for an internal combustion engine is provided. The method is adapted for an exhaust gas system having the fuel burner mounted upstream of a diesel particle filter (DPF). The method of calibration is performed during an idle speed of the combustion engine, this to assure a constant temperature of the burner during the calibration. Hence, the method is started when a first steady tempera tore is registered in the fuel burner, wherein the at least one fuel injector, is operated with a first pulse width. A first temperature of an exhaust gas is registered directly downstream of the fuel burner. After this first temperature is registered, the pulse width, of the fuel injector changed into a second pulse width, which is different from the first pulse width.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: May 12, 2015
    Assignee: Volvo Lastvagner AB
    Inventor: Mats Moren
  • Publication number: 20150121864
    Abstract: Methods and systems are provided for estimating a positive crankcase ventilation (PCV) flow based on outputs of an intake manifold oxygen sensor. For example, during engine operation when exhaust gas recirculation (EGR) and fuel canister purge are disabled, PCV flow may be estimated based on a difference between a first output of the sensor with boost enabled and a second output of the sensor with boost disabled. Then, during subsequent operation wherein EGR is enabled, PCV flow is enabled, and purge is disabled, a third output of the sensor may be adjusted based on the estimated PCV flow.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, James Alfred Hilditch, Matthew John Gerhart, Lynn Aimee Chesney, Stephen B. Smith
  • Publication number: 20150114367
    Abstract: There is provided an internal combustion engine control apparatus that can more accurately calculate a volume efficiency correction coefficient and can more accurately estimate the amount of air that flows into a cylinder and the external exhaust gas recirculation amount. In an internal combustion engine provided with an exhaust gas recirculation apparatus including an exhaust gas recirculation valve and an exhaust gas recirculation path, based on a cylinder flow rate, an exhaust gas recirculation amount, an inner-intake-pipe density, and an inner-intake-pipe density changing amount, a volume efficiency correction coefficient, as a volume efficiency corresponding value, is calculated; then, by use of the calculated volume efficiency correction coefficient, a cylinder intake air amount and a recirculation amount of exhaust gas that is taken into the cylinder are calculated.
    Type: Application
    Filed: February 20, 2014
    Publication date: April 30, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tomokazu MAKINO, Hideki HAGARI, Takuo WATANUKI
  • Patent number: 9020739
    Abstract: Disclosed is a control device for an internal combustion engine that is used with an internal combustion engine having an EGR catalyst and an EGR valve in an EGR path for connecting an exhaust path to an intake path, and capable of preventing the purification performance of the EGR catalyst from being degraded during EGR stoppage and purifying exhaust gas in a preferred manner upon EGR resumption. When EGR is stopped with the EGR valve closed, the control device judges whether an EGR path air-fuel ratio is richer than a threshold value. If the EGR path air-fuel ratio is judged to be richer than the threshold value, the control device sets a target air-fuel ratio for the internal combustion engine to be leaner than a stoichiometric air-fuel ratio.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masahiro Inoue
  • Patent number: 9010113
    Abstract: A control apparatus judges an abnormality of an internal combustion engine. The engine has an external EGR apparatus, including an exhaust gas recirculation passage that connects an exhaust passage with an intake passage, and an EGR valve that can increase and decrease an outside EGR flow quantity that flows back into the intake passage from said exhaust passage through the exhaust gas recirculation passage by being adjusted in its opening angle. The control apparatus acquires an output value of the engine and determines occurrence of abnormality in the external EGR apparatus according to a predetermined criterion based on a difference between an output of the engine in which a first EGR flow quantity is flown back and an output of the engine in which a second EGR flow quantity is flown back.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: April 21, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Harima
  • Patent number: 9014950
    Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: April 21, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
  • Publication number: 20150101314
    Abstract: The invention relates to a method and an arrangement for operating an internal combustion engine. In the method a first distribution of values for at least one variable is used, the variable describing a physical property of the internal combustion engine, and over a second time period values for this variable are recorded and classified, such that a second distribution is determined. The first distribution is then compared with the second distribution such that the behavior of the internal combustion engine can be adapted on the basis thereof.
    Type: Application
    Filed: December 17, 2014
    Publication date: April 16, 2015
    Applicant: MTU Friedrichshafen GmbH
    Inventor: Tim Sp├Ąder
  • Publication number: 20150101327
    Abstract: Methods and systems are provided for accurately learning the zero point of an intake gas oxygen sensor during selected engine no-fueling conditions. The learned zero point is used to infer EGR flow and accordingly adjust EGR valve control. In addition, EGR valve leakage is diagnosed based on the zero point learned during a DFSO adaptation relative to a zero point learned during an idle adaptation.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 16, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Timothy Joseph Clark, Gopichandra Surnilla, Matthew John Gerhart, Daniel Joseph Styles
  • Publication number: 20150101583
    Abstract: A method of controlling an exhaust gas recirculation system of an internal combustion engine is disclosed. The engine includes a compressor, an intake manifold, an after-treatment system, a low pressure EGR system and a high pressure EGR system. The method temporarily adjusts a low pressure EGR ratio, keeping constant a total EGR rate, after verifying at least one among compressor parameters, after-treatment system parameters or intake manifold parameter.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 16, 2015
    Inventors: Alberto VASSALLO, Stefano PELLEGRINO, Salvatore SANNINO
  • Publication number: 20150101581
    Abstract: A method and apparatus for controlling a boost pressure of a turbocharger is provided. The turbocharger includes a waste gate valve and a waste gate actuator. When the internal combustion engine operates under cold temperature conditions, a steady state temperature of the waste gate actuator is determined and a corrected temperature of the waste gate actuator is estimated as a function of the thermal convection between ambient air and the waste gate actuator. A corrected value of the duty cycle of a pulse width modulated signal is estimated as a function of said corrected temperature and the duty cycle corrected value is used to control the boost pressure of the turbocharger.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 16, 2015
    Inventors: Nihad Karacic, Nils Oth
  • Publication number: 20150101326
    Abstract: Methods and systems are provided for accurately learning the zero point of an intake gas oxygen sensor during selected idling conditions. The learned zero point is used to infer EGR flow and accordingly adjust EGR valve control. In addition, EGR valve leakage is diagnosed based on the zero point learned during an idle adaptation relative to a zero point learned during a DFSO adaptation.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 16, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Richard E. Soltis, James Alfred Hilditch, Timothy Joseph Clark, Matthew John Gerhart, Todd Anthony Rumpsa
  • Publication number: 20150101580
    Abstract: A system includes a reciprocating internal combustion engine with one or more reaction zones configured to receive a charge flow that is configured to react within the one or more reaction zones, thereby forming an exhaust gas flow, and a controller. The charge flow includes an oxidant flow, a fuel flow, and a recirculated portion of the exhaust gas flow. The controller is configured to control a ratio of the recirculated portion of the exhaust gas flow to a fuel mixture. The controller controls the ratio based at least in part on a first temperature, a second temperature of the charge flow, and a third temperature of the recirculated portion of the exhaust gas flow. The fuel mixture includes the oxidant flow and the fuel flow. The first temperature includes one or any combination of a sensed temperature of the oxidant flow, the fuel flow, or the fuel mixture.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 16, 2015
    Applicant: General Electric Company
    Inventor: Gregory Walter Sorge
  • Patent number: 9008951
    Abstract: A fuel admission control unit controls a diesel engine and ensures compatibility between exhaust gas performance and engine speed response performance by considering residual oxygen in EGR gas. The control unit includes an estimation excess air ratio ?s computing unit that is an arithmetic section to compute an estimation excess air ratio ?s, from the quantity of the fuel injected by a fuel injection valve into a cylinder, the intake air flow rate, and the flow rate of the residual oxygen in the EGR gas that returns back into the intake air system. The control unit also includes a fuel admission control unit that controls the fuel flow rate under hard acceleration, based on the estimation excess air ratio ?s that is computed by the estimation excess air ratio ?s computing unit.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: April 14, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazunari Ide, Satoshi Iwasaki