Exhaust Gas Temperature Or Pressure Repsonsive Patents (Class 123/676)
  • Patent number: 10145283
    Abstract: A diesel engine system includes a diesel engine, a NOx control device downstream of the engine, an exhaust line between the engine and the NOx control device, a bypass line connected to the exhaust line at a first end upstream of the NOx control device, and a bypass valve connecting the exhaust line and the bypass line, the bypass valve permitting flow through the exhaust line to the NOx control device when in an open position and preventing flow through the exhaust line to the NOx control device and permitting flow through the exhaust line to the bypass line when in a closed position. A controller can arranged to control opening and dosing of the bypass valve, such as when an operating condition of the engine reaches a predetermined operating condition.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: December 4, 2018
    Assignee: Volvo Lastvagnar AB
    Inventor: Stephen Geyer
  • Patent number: 10054067
    Abstract: A system and method is provided for the use of the ion current signal characteristics for onboard cycle-by-cycle, cylinder-by-cylinder measurement. The system may also control the engine operating parameters based on a predicted NOx emission level, CO emission level, CO2 emission level, O2 emission level, unburned hydrocarbon (HC) emission level, cylinder pressure, or a cylinder temperature measurement according to characteristics of the ion current signal.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 21, 2018
    Assignee: Wayne State University
    Inventors: Tamer H. Badawy, Fadi A. Estefanous, Naeim A. Henein
  • Patent number: 9964056
    Abstract: A method includes controlling an engine speed based on: intake manifold air temperature and/or intake manifold pressure one, or more, of the following data parameters: an engine load as a function of a fuel level, a fuel injecting timing, an intake oxygen concentration, a constituent concentration from the exhaust gas flow, an engine power, and an engine torque. The method also recirculates a portion of the exhaust gas flow to the combustion cylinders of the engine via a recirculation channel, as a function of intake manifold temperature and/or intake manifold pressure at which the engine is operated. An engine system, other methods, and a non-transitory computer readable medium encoded with a program, to enable a processor-based control unit to control aspects of the engine are also disclosed.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 8, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Thomas Michael Lavertu, James Robert Mischler, Venu Gummadavelli Gupta
  • Patent number: 9927348
    Abstract: Various embodiments include a system having: a computing device configured to monitor a gas turbine (GT) by: determining a moisture content and/or an oxygen content of inlet air entering the inlet of the GT compressor section; determining a corresponding one of the moisture content and/or the oxygen content of exhaust gas from the GT turbine section; calculating a flow rate of the exhaust gas from the turbine section and a flow rate of the inlet air entering the inlet of the compressor section based upon the moisture content and/or the oxygen content of the inlet air and the exhaust gas; and calculating a temperature of the exhaust gas and an energy of the exhaust gas from the turbine section based upon the flow rate of the exhaust gas from the turbine and the flow rate of the inlet air entering the inlet of the compressor section.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: March 27, 2018
    Assignee: General Electric Company
    Inventors: Daili Zhang, Constantin Dinu
  • Patent number: 9926872
    Abstract: Methods and systems are provided for leveraging the pressure dependency of an oxygen sensor for estimating an engine ambient pressure. An intake or exhaust oxygen sensor is used for ambient pressure estimation by applying a reference voltage to the sensor while the engine is being pulled-down in a hybrid vehicle, and correcting an output of the sensor for dilution effects due to ambient humidity. The estimated ambient pressure is used to correct or confirm pressure estimated by other sources, such as other pressure sensors or a pressure model, as well as to tune the performance of the engine.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 27, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel A. Makled, Michael McQuillen, Gopichandra Surnilla, Richard E. Soltis
  • Patent number: 9915197
    Abstract: A method of setting actuator position of a variable geometry turbine linked to drive a compressor for a compression ignition engine using exhaust gas recirculation. The method includes detecting an engine transient event; determining current mass air flow through the compressor and exhaust temperature; resetting variable geometry turbine position to maximize mass air flow through the compressor; adding the maximum allowable quantity of fuel; determining exhaust temperature increase; adjusting exhaust pressure to allow an increase in mass air flow and exhaust temperature; and returning to the resetting step until a limit is reached.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: March 13, 2018
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventors: Luis C. Cattani, Michael Uchanski, Rogelio Rodriguez, James R. Cigler, Jeremy G. Schipper, Jer Sheng Chen, Dileep Khadilkar, Shree C. Kanchanavally, John R. Zagone, Daniel Cornelius
  • Patent number: 9874162
    Abstract: A system for controlling an engine includes a driving information detector detecting driving information. At least one intake valve and at least one exhaust valve open and close the combustion chamber. A variable valve lift (VVL) system adjusts opening timing of the intake valve and the exhaust valve. A compressor rotates by a rotational force of a turbine and compresses intake air, and a vane adjusts the amount of exhaust gas supplied to the turbine. A controller controls opening of the vane using a high pressure EGR valve, when the exhaust valve is open during a suction stroke by the VVL system, the vehicle accelerates or decelerates, and an air/fuel ratio is beyond reference ratio range.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: January 23, 2018
    Assignee: Hyundai Motor Company
    Inventors: JangSu Lee, Hyo Sang Cho
  • Patent number: 9850833
    Abstract: A diagnosis device for an engine, the diagnosis device includes an electronic control unit. The electronic control unit is configured to execute EGR diagnosis processing to diagnose whether or not the EGR device operates normally while a vehicle is being decelerated, execute air flow meter diagnosis processing to diagnose whether or not the air flow meter is normal while the vehicle is decelerated, execute the EGR diagnosis processing after starting the air flow meter diagnosis processing, and execute the EGR diagnosis processing when the air flow meter diagnosis processing has not been completed and predetermined conditions that a duration of deceleration of the vehicle being shorter than a diagnosis time that is required to execute the air flow meter diagnosis processing are fulfilled.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: December 26, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Miyahara, Kenichiro Kawase
  • Patent number: 9850796
    Abstract: An apparatus includes a dosing module structured to suspend dosing in an exhaust aftertreatment system; a selective catalytic reduction (SCR) inlet NOx module structured to interpret SCR inlet NOx data and an SCR inlet temperature; a SCR outlet NOx module structured to interpret SCR outlet NOx data; and a system diagnostic module structured to determine an efficiency of a SCR system based on the SCR inlet and outlet NOx data over a range of SCR temperatures, wherein the system diagnostic module is further structured to determine a state of at least one of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and the SCR system based on the SCR efficiency at an elevated SCR temperature range and the SCR efficiency at a relatively lower SCR temperature range relative to a high SCR efficiency threshold and a low SCR efficiency threshold.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: December 26, 2017
    Assignee: Cummins, Inc.
    Inventors: Andrew W. Osburn, Mark N. Bays, Krishna Kamasamudram, Aleksey Yezerets
  • Patent number: 9777646
    Abstract: A method for operating an engine, comprising port injecting a first quantity of a first gaseous fuel in a cylinder cycle and direct injecting a second quantity of a secondary injectant in the cylinder cycle as a function of a desired air-to-fuel ratio (AFR), the desired AFR based on a temperature of an engine cylinder valve. The desired AFR may be outside the AFR range available during natural gas combustion alone and thus allows for cooler engine operation.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: October 3, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: David Karl Bidner, Mark Allen Dearth, Gopichandra Surnilla
  • Patent number: 9670860
    Abstract: An abnormality diagnosis apparatus applied to an internal combustion engine, including a supercharger, a communication path, an opening/closing valve, and a downstream intake air temperature sensor and not having a cooling device on the upstream side of the downstream intake air temperature sensor and conducting abnormality diagnosis of the downstream intake air temperature sensor diagnoses that the downstream intake air temperature sensor is abnormal if an operation state of the internal combustion engine is a low load and a low rotation region and a detected value of the downstream intake air temperature sensor is at a predetermined high temperature or more and prohibits the subsequent abnormality diagnosis if the operation state of the internal combustion engine becomes a higher load or a higher rotation than the low load and low rotation region.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: June 6, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Mitsuhiko Kubota
  • Patent number: 9546613
    Abstract: A control device of a compression-ignition engine is provided. The control device includes the engine having a cylinder, an exhaust gas recirculation system for introducing exhaust gas into the cylinder, and a controller for operating the engine by compression-ignition combustion of mixture gas inside the cylinder within a predetermined compression-ignitable range on a low engine load side. Within the compression-ignitable range, the controller sets an EGR ratio higher as the engine load becomes lower, and the controller sets the EGR ratio to a predetermined highest EGR ratio when the engine load is at a specific load that is on the low engine load side within the compression-ignitable range. When the engine load is lower than the specific load, the controller sets the EGR ratio to be lower than the highest EGR ratio.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: January 17, 2017
    Assignee: Mazda Motor Corporation
    Inventors: Kazuhiro Nagatsu, Junichi Taga, Takashi Youso, Atsushi Inoue, Mitsunori Wasada, Keiji Araki
  • Patent number: 9488118
    Abstract: In a method of controlling the combustion of a combustion engine from an estimation of the burnt gas mass fraction in the intake manifold, a measurement relative to a fresh air flow rate or to a burnt gas flow rate is performed upstream from the mixing space where fresh air and burnt gas mix. The burnt gas mass fraction present in the mixing space is then estimated from the measurement and from a model of the mixing dynamics in this space. A transport delay between the space and the intake manifold is estimated. The mass fraction of burnt gas in the intake manifold is then deduced in real time. Finally, combustion is controlled from the burnt gas mass fraction in the intake manifold.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: November 8, 2016
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Delphine Bresch-Pietri, Thomas Leroy, Jonathan Chauvin
  • Patent number: 9470600
    Abstract: A method for diagnosing a differential pressure sensor situated in an air duct of an internal combustion engine, including: selecting a tolerance range for an output signal of the differential pressure sensor, within which a predetermined pressure difference is to be interpreted; and ignoring an error, in which the output signal of the differential pressure sensor falls out of the tolerance range, if, first of all, a predetermined operating situation prevails, in which the predetermined pressure difference is considered to be applied to the differential pressure sensor, and secondly, a disturbance pressure is detected in the air duct.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: October 18, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Soenke Mannal, Berthold Burk, Horst Mueller, Michael Bachner
  • Patent number: 9441526
    Abstract: A regeneration device that performs regeneration treatment of a particulate matter removing filter estimates a trapping amount of particulate matter trapped in the filter by two systems. Specifically, there are provided an estimating unit that estimates a first estimated trapping amount based upon a rotational speed of an engine and a fuel injection quantity and an estimating unit that estimates a second estimated trapping amount based upon a differential pressure across the particulate matter removing filter. The regeneration device determines whether or not the regeneration treatment is executed based upon whether or not at least one of the two estimated trapping amount is equal to or more than a preset trapping amount threshold value. Further, the regeneration device determines that there is a malfunction in the regeneration device in a case where the second estimated trapping amount is larger than the first estimated trapping amount.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: September 13, 2016
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Shuuhei Noguchi, Hajime Yoshida
  • Patent number: 9394847
    Abstract: A fuel injection control apparatus for fuel injection at optimum timing in correspondence with level of gas flow velocity in an intake port upon intake stroke injection. A fuel injection valve is controlled so as to set a large majority (more than half) of an injection period to inject fuel during an intake stroke in respective cylinders within a period where intake port gas pressure is increased. Upon intake stroke injection, the fuel is injected at optimum timing in correspondence with the direction and the level of gas flow velocity in the intake port. Accordingly, the status of air-fuel mixture in a combustion chamber is excellent. It is possible to improve fuel consumption and to reduce exhaust emission.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: July 19, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshihiro Sukegawa, Masayuki Saruwatari, Kohsuke Kanda, Yoshitatsu Nakamura
  • Patent number: 9353668
    Abstract: A regeneration device burns particulate matter trapped in a filter in an exhaust gas purifying device to execute regeneration treatment of the filter. The regeneration device performs a determination whether or not the regeneration treatment is executed using a first estimated trapping quantity (H1) estimated based upon a differential pressure (?P=P1?P2) as a difference between pressure (P1) in an inlet side and pressure (P2) in an outlet side of the filter and a second estimated trapping quantity (H2) estimated based upon a rotational speed (N) of an engine, a fuel injection quantity (F) and an exhaust gas temperature (GT). In this case, the determination whether or not the regeneration treatment is executed is performed using only the second estimated trapping quantity (H2) when the engine is in a predetermined low rotational condition.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: May 31, 2016
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shuuhei Noguchi, Hajime Yoshida
  • Patent number: 9354213
    Abstract: A method and device for correcting a voltage-lambda characteristic curve of a two-step lambda oxygen sensor in an exhaust tract relative to a reference-voltage lambda characteristic curve of the oxygen sensor; a deviation in the characteristic curve relative to the reference characteristic curve at lambda=1 being corrected; based on a value pair on the reference-voltage lambda characteristic curve, the composition of the air-fuel mixture supplied to the engine being changed toward lambda=1; the actual value of lambda being inferred from the change in the composition of the air-fuel mixture. The adaptation of the operating parameters of the oxygen sensor is intended to eliminate the cause of a deviation. Efforts are not merely directed to adapting the deviation to the reference characteristic curve by shifting the voltage-lambda characteristic curve. Effects, which may lead to tolerance- or aging-induced falsifications of the voltage-lambda characteristic curve, can be fully compensated.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 31, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Michael Fey
  • Patent number: 9260996
    Abstract: In one exemplary embodiment of the invention, a method for controlling an exhaust system includes determining an air to fuel ratio within a combustion chamber of an internal combustion engine, measuring a temperature of an exhaust gas flow from the internal combustion engine into the exhaust system and determining a specific heat for the exhaust gas flow in a first segment of the exhaust system based on the temperature of the exhaust gas flow from the internal combustion engine and the air to fuel ratio, wherein the first segment is upstream of the particulate filter. The method also includes determining a first temperature of the exhaust gas in the first segment based on the specific heat for the exhaust gas flow and selectively controlling a regeneration process for the particulate filter using the determined temperature of the exhaust gas at the selected location.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: February 16, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Scot A. Douglas, Patrick Barasa
  • Patent number: 9212627
    Abstract: Methods and systems are provided for draining water separated from diesel fuel into an EGR system. In response to the water volume in the fuel system and EGR flow at pre-determined levels, water may be introduced into the EGR system. EGR flow may also be controlled in response to introducing water into the EGR system and engine operating conditions.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: December 15, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Brien Lloyd Fulton, Carlos Armesto, Larry Castleberry, Brad Allen Brown, Armando Chacon
  • Patent number: 9175616
    Abstract: Various embodiments related to controlling EGR in an engine are disclosed. In one embodiment, a first EGR amount is supplied to a cylinder at a first temperature and a first engine speed and load. Further, at the first engine speed and load, as engine temperature increases from the first temperature to a second temperature, a first fuel amount is injected after exhaust valve closing and before intake valve opening while a second EGR amount is supplied to the cylinder that is greater than the first EGR amount.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: November 3, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Jianwen James Yi, Steven Wooldridge, Brad Alan VanDerWege, Shiyou Yang, Thomas A. McCarthy
  • Patent number: 9175624
    Abstract: A system and method for controlling an exhaust gas recirculation valve during transient cycles of engine operation to improve fuel consumption efficiency. The system and method includes first determining a flow rate of total mass out of the intake manifold of the combustion engine and the current mass fraction of exhaust gas in the intake manifold of the combustion engine, calculating a mass flow rate for exhaust gas into the intake manifold that is based on the flow rate of total mass out of the intake manifold and the current mass fraction of exhaust gas in the intake manifold, and actuating a control valve to a position based on the calculated mass flow rate for exhaust gas into the intake manifold.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: November 3, 2015
    Assignee: FCA US LLC
    Inventors: Gang Chen, Drushan Mavalankar, Hussein Dourra
  • Patent number: 9169790
    Abstract: A method for controlling a compressor of a turbocharger is disclosed. In one example, the method comprises varying a maximum permitted compressor outlet temperature based upon a function of compressor outlet temperature and operating time, and controlling the operation of the compressor so that the maximum permitted compressor outlet temperature is not exceeded. In this way a higher boost pressure can safely be used during the early life of the compressor but excessive coking of the compressor with a resultant loss of efficiency later in the life of the compressor is reduced.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: October 27, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Jon Dixon
  • Patent number: 9062577
    Abstract: A method for controlling emissions in the exhaust gas of a diesel engine, the engine having an exhaust gas recirculation (EGR) system. The engine's exhaust aftertreatment system need have only an oxidation catalyst and a particulate filter (with no NOx reduction or adsorption device). In “normal” engine conditions, the engine is operated with a lean air-fuel ratio, with “normal” engine conditions being engine conditions other than transient load increase engine conditions. Also, during normal engine conditions, the EGR system is used to reduce engine-out NOx. During transient load increase engine conditions, the engine is operated stoichiometrically or near stoichiometrically and the use of EGR is interrupted.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: June 23, 2015
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Chad P. Koci, Vlad L. C. Ulmet, Stefan Simescu, Magdi K. Khair, Gary D. Neely
  • Publication number: 20150144116
    Abstract: A control system executes failure detection of a direct injector when a port injector stops injection and the direct injector injects, and executes the failure detection when a recirculation passage is closed by an EGR valve.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 28, 2015
    Inventor: Takumi Anzawa
  • Publication number: 20150136100
    Abstract: A fuel injection device is provided with an injection instruction unit that instructs multiple fuel injection valves that inject fuel into respective multiple cylinders of an engine to perform fuel injection while the engine is stopped. The injection instruction unit instructs the multiple fuel injection valves to perform the fuel injection while the engine is stopped on the basis of at least one of an amount of heat from combustion gas with respect to at least one of the multiple fuel injection valves and an amount of heat radiated therefrom. The injection instruction unit refers to an EGR rate before the engine is stopped and reduces the fuel injection while the engine is stopped as the EGR rate is lower.
    Type: Application
    Filed: June 14, 2012
    Publication date: May 21, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masato Ikemoto
  • Publication number: 20150136099
    Abstract: A valve (4, 4?) for a fuel system for a combustion engine: A ball retainer (26) is provided with a cavity (28) to accommodate a ball (22). The ball (22) has a first seal surface (30) to cooperate with and abut sealingly against a seat (32). The ball retainer (26) has a secondary seal surface (34) to cooperate with and abut sealingly against the seat (32) when the ball (22) is not in the ball retainer (26). Also, a method for controlling a fuel system for a combustion engine.
    Type: Application
    Filed: April 10, 2013
    Publication date: May 21, 2015
    Inventor: Kim Kylström
  • Publication number: 20150128921
    Abstract: Disclosed is an exhaust manifold that comprises an exhaust gas passage, an EGR passage, and a coolant passage. The exhaust gas passage extends fluidly between an exhaust gas inlet and an exhaust gas outlet positioned downstream thereof. The EGR passage extends fluidly between an EGR inlet and an EGR outlet positioned downstream thereof. The EGR inlet is defined by the exhaust gas passage. A coolant passage extends fluidly between a coolant inlet and a coolant outlet positioned downstream thereof. The coolant passage overlaps the exhaust gas passage and the EGR passage. The exhaust gas passage is configured to cool the exhaust gas, and EGR passage is configured to cool the recirculated portion of the exhaust gas.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 14, 2015
    Applicant: Deere & Company
    Inventor: ADAM J. PAULL
  • 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
  • Patent number: 9022011
    Abstract: A method of operating an engine is disclosed, which includes determining a peak power condition for the engine, measuring a temperature associated with the engine at said peak power condition, comparing the temperature measured with a previously determined temperature associated with a known peak power condition of the engine, determining an offset value based on the comparison made in step, controlling at least one of an air-fuel mixture delivered to the engine or ignition spark timing based on said offset value. Various engine fuel delivery systems, carburetors, fuel injection and control systems also are disclosed.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: May 5, 2015
    Assignee: Walbro Engine Management, L.L.C.
    Inventors: Martin N. Andersson, Andrew E. Bejcek, Massimo Casoni, William E. Galka, Cyrus M. Healy, Alessandro Pascoli, Ronald H. Roche, Mark S. Swanson, James E. Van Allen, John C. Woody
  • Publication number: 20150114374
    Abstract: A method for the fuel consumption reduction and/or power increase of an internal combustion engine of a motor vehicle is disclosed. A crank angle of a crankshaft is detected at which out of a cylinder the exhaust gases of a cylinder can be representatively measured on a lambda probe. The exhaust gas flow is measured on the lambda probe. A signal of the lambda probe is scanned at the time of the detection of the crank angle. A value indicated the detected angle and/or the scanned signal is sent to a computer. The value is corrected with the help of an exhaust gas pressure or exhaust gas back pressure model stored in the computer. An effective combustion lambda of the cylinder is calculated based on the sent values and a global lambda value stored in the computer and used to the control of the internal combustion engine.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventor: Stefan Horst
  • Patent number: 9014947
    Abstract: A method for operating a boosted gasoline engine. The method includes diluting an intake air charge of the engine to a first level of dilution when operating at a stoichiometric air-to-fuel ratio. The method also includes, in response to a condition of excessive exhaust temperature downstream of the engine, diluting the intake air charge of the engine to a second, greater level of dilution while operating at an enriched air-to-fuel ratio.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: April 21, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, 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
  • Patent number: 8973563
    Abstract: An internal combustion engine control apparatus includes means that detects an inlet temperature that is a temperature in a vicinity of an inlet of a purification catalyst disposed in an exhaust path and means that detects a turbine temperature that is a temperature in a vicinity of an exhaust turbine of a turbo-supercharger disposed in the exhaust path, and also includes means that controls a valve overlap that is a state in which an intake valve and an exhaust valve of the internal combustion engine are open simultaneously. When the inlet temperature is lower than an inlet high temperature reference value, and the turbine temperature is higher than a turbine high temperature reference value that is higher than the inlet high temperature reference value, the valve overlap amount is increased so as to be greater than a turbine high temperature time reference amount.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: March 10, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Akira Eiraku
  • Publication number: 20150033735
    Abstract: Methods and systems are disclosed for controlling an exhaust gas recirculation valve in an engine by determining errors in exhaust backpressure estimates and adapting EGR flow estimations based on these errors to meet target EGR dilutions in the engine. In one example approach, a method comprises adjusting valve position based on desired EGR flow and estimated EGR flow, where the estimated flow is based on estimated exhaust backpressure, and the estimated exhaust backpressure is updated based on errors between actual and desired intake oxygen concentration.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: Ford Global Technologies, LLC
    Inventors: Imad Hassan Makki, Timothy Joseph Clark
  • Publication number: 20140373822
    Abstract: This disclosure provides a system and method that eliminates the need for manually calibrating or adjusting a dual fuel internal combustion engine to compensate for variations in composition of a gaseous fuel or other variations, such as ambient or site conditions. The system and method functions by determining an engine load, determining an advantageous gaseous fuel substitution rate from the engine load and speed in addition to an actual gaseous fuel substitution rate, modifying the advantageous gaseous fuel substitution rate by a minimum liquid fuel flow rate, engine protection parameters, and oxidation catalyst protection parameters, and then determining an error term in response to the modified advantageous gaseous fuel substitution rate and the actual gaseous fuel substitution rate. The error term is used to adjust a gaseous fuel control valve.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 25, 2014
    Inventors: Mark A. Rosswurm, Axel O. zur Loye
  • Patent number: 8903631
    Abstract: Various methods and systems are provided for regenerating an exhaust gas recirculation cooler. One example method includes, routing exhaust gas from a donor cylinder group of an engine to an intake passage of the engine through the exhaust gas recirculation cooler, routing exhaust gas from a non-donor cylinder group of the engine to an exhaust passage of the engine, and adjusting fuel distribution among the donor cylinder group and the non-donor cylinder group responsive to a temperature of the exhaust gas recirculation cooler.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: December 2, 2014
    Assignee: General Electric Company
    Inventors: Adam Klingbeil, Roy Primus, Michael Easter, Eric David Peters
  • Patent number: 8903632
    Abstract: Various methods and systems are provided for regenerating an exhaust gas recirculation cooler. One example method includes, initiating an EGR cooler regeneration mode, wherein the EGR cooler regeneration mode comprises changing a fuel distribution of a donor cylinder group relative to a non-donor cylinder group of an engine, and increasing at least one of engine speed or load of the engine.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: December 2, 2014
    Assignee: General Electric Company
    Inventors: Eric David Peters, Roy Primus, Paul Lloyd Flynn, John Stephen Roth, Franz-Joseph Foltz, James Robert Mischler, Luke Henry, Roshan Shekhar Kotian, Michael Easter, Stephen Mark Geyer
  • Patent number: 8857411
    Abstract: The present invention relates to a method for operating a piston engine, more preferably of a motor vehicle, with a fresh air system for feeding fresh air to cylinders of the piston engine and with an exhaust system for discharging exhaust gas from the cylinders, wherein during a gas exchange by a positive pressure wave on the fresh air side the charging of the respective cylinder with fresh air and/or by a negative pressure wave on the exhaust gas side the discharging of exhaust gas from the respective cylinder is supported. An increased variability is obtained if the respective pressure wave is generated by at least one electroacoustic converter.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: October 14, 2014
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventors: Jan Krüger, Rolf Jebasinski
  • Patent number: 8831858
    Abstract: Various methods and systems are provided for operating an internal combustion engine, the engine having a plurality of cylinders including one or more donor cylinders and one or more non-donor cylinders. In one example, a method includes, during an exhaust gas recirculation cooler heating mode, operating at least one of the donor cylinders at a cylinder load sufficient to increase an exhaust temperature for regenerating an exhaust gas recirculation cooler, and operating at least one of the non-donor cylinders in a low- or no-fuel mode.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: September 9, 2014
    Assignee: General Electric Company
    Inventors: John Stephen Roth, Kyle Craig Stott, James Robert Mischler, Paul Flynn, Kirk Heywood, Daniel Allan Moser
  • Patent number: 8818691
    Abstract: In one exemplary embodiment of the invention, an internal combustion engine includes a fuel system in fluid communication with a cylinder to direct a fuel flow to be mixed with air in the cylinder and an exhaust system in fluid communication with the cylinder to receive an exhaust gas produced by the combustion process, wherein the exhaust system includes an oxidation catalyst, a particulate filter downstream of the oxidation catalyst. The system also includes a control module that determines an amount of energy to be provided by at least one of: a post-injection process, hydrocarbon injector, and heating device, wherein the amount of energy is based on a desired temperature at a selected location in the exhaust system, an exhaust gas flow rate, a temperature of the received exhaust gas, a flow rate and temperature of the exhaust gas at the inlet of the oxidation catalyst.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: August 26, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Scot A. Douglas, Michael J. Paratore, Jr., Jason Daniel Mullins, Patrick Barasa
  • Patent number: 8795512
    Abstract: A method for measuring and/or calibrating a gas sensor for determining oxygenic gas components in gas mixtures in exhaust gases of internal combustion engines. The gas sensor has one internal pump electrode IPE, one external pump electrode APE and one decomposition electrode NOE. The measurement and/or calibration may be carried out during the ongoing operation of the gas sensor by removing the gas component and/or oxygen from one of the chambers, by introducing oxygen in a controlled manner into one of the chambers with the aid of electrochemical pumping processes. The changes caused by the introduced oxygen are measured against an additional electrode and the gas sensor may be measured and/or calibrated using the measured values.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: August 5, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Thomas Classen
  • Patent number: 8798893
    Abstract: A fuel injection control for an internal combustion engine includes: estimating a convergence temperature of the exhaust gas catalytic converter; calculating an OTP boost value using the estimated convergence temperature; and estimating the convergence temperature on the assumption that the temperature decrement quantity of the exhaust gas catalytic converter which is caused by the power boosting is zero when both of the OTP boosting execution condition and the power boosting execution condition are met.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: August 5, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masahiro Kachi, Yasuyuki Takama
  • Patent number: 8784264
    Abstract: A method and a system for improving operation of a hybrid vehicle are presented. In one example, an engine exhaust after treatment device is cooled at an opportunistic time. The approach may provide improved cooling for exhaust after treatment devices and it may also improve vehicle emissions.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: July 22, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Alex O'Connor Gibson, Jeffrey Allen Doering, Dennis Graig Reed
  • Publication number: 20140196704
    Abstract: Controlling turbocharger boost pressure using exhaust pressure estimated from engine cylinder pressure.
    Type: Application
    Filed: April 19, 2012
    Publication date: July 17, 2014
    Applicant: BORGWARNER INC.
    Inventors: John Shutty, Wolfgang Wenzel
  • Publication number: 20140150761
    Abstract: A drive system for a motor vehicle, having an internal combustion engine, an air and exhaust gas system, which includes at least one throttle, an exhaust gas recirculation system, which is in fluidic connection with the air and exhaust gas system at two connecting points, and a measuring device, which is designed to detect an atmospheric pressure, to detect a gas pressure at a measuring point within the air and exhaust gas system, and to ascertain a differential pressure as a function of the gas pressure and the atmospheric pressure, the measuring point being fluidically situated between the throttle and the internal combustion engine and in a region of one of the connecting points.
    Type: Application
    Filed: February 28, 2012
    Publication date: June 5, 2014
    Inventors: Wilhelm Blumendeller, Thomas Bleile
  • Publication number: 20140123968
    Abstract: A method and apparatus for controlling the operation of a turbocharged internal combustion engine 10 with an exhaust gas aftertreatment device 20, wherein the operation of a wastegate of the turbocharger is based upon the exhaust gas aftertreatment device temperature and at least one of engine speed, engine fuel injection quantity, coolant temperature, ambient temperature and barometric pressure.
    Type: Application
    Filed: June 29, 2012
    Publication date: May 8, 2014
    Inventors: Alistair Farman, Michael Smith, Anthony Rodman, Matthew Nicholson
  • Publication number: 20140121940
    Abstract: A method for operating a boosted gasoline engine. The method includes diluting an intake air charge of the engine to a first level of dilution when operating at a stoichiometric air-to-fuel ratio. The method also includes, in response to a condition of excessive exhaust temperature downstream of the engine, diluting the intake air charge of the engine to a second, greater level of dilution while operating at an enriched air-to-fuel ratio.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 1, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Gopichandra Surnilla, Daniel Joseph Styles
  • Patent number: 8682567
    Abstract: An intake air control apparatus for an internal-combustion engine includes an intake air adjusting device. An operating mode determination device is configured to determine whether the internal-combustion engine is in a predetermined high rotation speed and high load operation mode in which cooling is required by increasing an amount of fuel. An intake air reduction controller is configured to, if the operating mode determination device determines that the internal-combustion engine is in the predetermined high rotation speed and high load operation mode, control the intake air adjusting device so that an intake air amount is reduced in accordance with a rotation speed of the internal-combustion engine and an ignition timing in order to restrict a fuel injection quantity to be injected from a fuel injection valve so that the fuel injection quantity does not exceed a maximum fueling rate of the fuel injection valve.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 25, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Futoshi Nishioka, Hideharu Takamiya, Masayoshi Nishino
  • Publication number: 20140069380
    Abstract: Embodiments for controlling an exhaust back-pressure valve are provided. In one example, a method for operating an engine comprises closing an exhaust back-pressure valve in response to a component temperature, adjusting intake and/or exhaust valve operation in response to closing the exhaust back-pressure valve to reduce cylinder internal exhaust gas recirculation (EGR), and while the exhaust back-pressure valve is closing, indicating degradation of an exhaust back-pressure system if a designated engine operating parameter remains constant. In this way, degradation of the exhaust back-pressure system may be diagnosed while maintaining combustion stability.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 13, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Thomas G. Leone, Peter C. Moilanen