Engine Cylinder Cutout Patents (Class 123/481)
  • Patent number: 10502175
    Abstract: In a control device for an internal combustion engine and a method of estimating a combustion chamber-wall temperature of an internal combustion engine of the invention, a difference between a wall temperature of the combustion chamber and a cooling water temperature is set according to an integrated value of the intake air amount of the internal combustion engine after start of the fuel-cut, and the estimated value of the wall temperature of the combustion chamber during the fuel-cut is obtained based on the difference and the cooling water temperature.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: December 10, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yuichi Toyama, Shigeyuki Sakaguchi, Atsushi Murai
  • Patent number: 10253706
    Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating working chamber air charge during engine operations. The described approaches and devices are well suited for use in dynamic firing level modulation controlled engines. Manifold pressure is estimated for a time corresponding to an induction event associated with a selected working cycle. The manifold pressure estimate accounts for impacts from one or more intervening potential induction events that will occur between the time that the manifold pressure is estimated and the time that the induction event associated with the selected working cycle occurs. The estimated manifold pressure is used in the estimation of the air charge for the selected working cycle. The described approach may be used to individually calculate the air charge for each induction event at any time that the engine is operating in a mode that can benefit from the individual cylinder air charge estimations.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: April 9, 2019
    Assignee: Tula Technology, Inc.
    Inventors: Allan J. Kotwicki, Joel D. Van Ess, Mark A. Wilcutts
  • Patent number: 10233796
    Abstract: An internal combustion engine capable of cylinder deactivation or skip fire control in combination with variable valve lift control. One bank of cylinders can be deactivated while the air induction of the other bank of cylinders is regulated using variable valve lift control to increase engine efficiency. An internal combustion engine with two cylinder banks, where control of one cylinder bank using skip fire control can be operating at an appropriate firing fraction in combination with variable valve lift control on the other cylinder bank. A single bank of cylinders can be controlled in a skip fire manner in conjunction with variable valve lift control.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: March 19, 2019
    Assignee: Tula Technology, Inc.
    Inventors: Mark A. Shost, Matthew A. Younkins
  • Patent number: 10119886
    Abstract: A filtration monitoring system is an electronic system control module installed on an internal combustion engine or within a vehicle powered by the internal combustion engine. The filtration monitoring system monitors the health and status of the filtration systems present on the engine. The filtration monitoring system tracks filter loading patterns and predicts remaining service life of the filters by running smart algorithms based on sensor feedback (e.g., pressure sensor feedback, fluid quality characteristic sensor feedback, etc.). In some arrangements, the described filtration monitoring systems provide feedback as to whether a genuine (i.e., authorized, OEM approved, etc.) or unauthorized filter cartridge is installed in a given filtration system. The filtration monitoring system may be retrofit into an existing internal combustion engine or vehicle that does not already have a filtration monitoring system.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: November 6, 2018
    Assignee: CUMMINS FILTRATION IP, INC.
    Inventors: Amit Dhingra, Bharadwaj Prabhala, Abhijeet Vaidya, Abhijit Shimpi, Eric R. Burgan
  • Patent number: 10087874
    Abstract: A control device for an internal combustion engine has a controller configured to control a fuel injection valve arranged to directly inject a fuel into a combustion chamber, and a variable compression ratio mechanism arranged to vary an upper dead center position of a piston, and thereby to vary a compression ratio of the internal combustion engine. The controller is configured to control a fuel cut by which the fuel injection from the fuel injection valve is stopped, when a predetermined fuel cut condition is satisfied during a traveling of a vehicle. The fuel injection from the fuel injection valve is restarted when a predetermined fuel cut recovery condition is satisfied during the fuel cut.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: October 2, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Ryo Uchida, Futoshi Yoshimura, Tomoyoshi Date, Rina Kamio
  • Patent number: 10072592
    Abstract: In one aspect, a method for controlling operation of an internal combustion engine is described. The engine is operated in a skip fire manner such that selected skipped working cycles are skipped and selected active working cycles are fired to deliver a desired engine output. A particular level of torque output is selected for each of the fired working chambers. Various methods, arrangements and systems related to the above method are also described.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: September 11, 2018
    Assignee: Tula Technology, Inc.
    Inventors: Matthew A. Younkins, Louis J. Serrano
  • Patent number: 9964051
    Abstract: In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the skip fire controller is arranged to select a base firing fraction that has a repeating firing cycle length that will repeat at least a designated number of times per second at the current engine speed. Such an arrangement can be helpful in reducing the occurrence of undesirable vibrations.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 8, 2018
    Assignee: Tula Technology, Inc.
    Inventors: Mohammad R. Pirjaberi, Adya S. Tripathi, Louis J. Serrano
  • Patent number: 9878718
    Abstract: A variety of methods and arrangements are described for controlling transitions between firing fractions during skip fire and potentially variable displacement operation of an engine. In general, actuator first transition strategies are described in which an actuator position (e.g., cam phase, TCC slip, etc.) is changed to, or close to a target position before i corresponding firing fraction change is implemented. When the actuator change associated with a desired firing fraction change is relatively large, the firing fraction change is divided into a series of two or more firing fraction change steps. A number of intermediate target selection schemes are described as well.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: January 30, 2018
    Assignee: Tula Technology, Inc.
    Inventors: Louis J. Serrano, Steven E. Carlson
  • Patent number: 9856806
    Abstract: An internal combustion engine has a plurality of cylinders and is provided with an arrangement for exhaust gas recirculation. The plurality of cylinders is divided into a first group and a second group of cylinders. The internal combustion engine further has a control device arranged to provide a heating mode of the internal combustion engine where the first group cylinders are deactivated and the second group cylinders are activated. The control device is arranged to provide a higher proportion recirculated exhaust gas than inlet air to the first group cylinders in the heating mode.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: January 2, 2018
    Assignee: Volvo Construction Equipment AB
    Inventor: Magnus Bjurman
  • Patent number: 9856808
    Abstract: Various systems and methods are described for controlling fuel injection in a variable displacement engine. One method for a deactivatable cylinder comprises, before deactivating the cylinder responsive to operating conditions, disabling a port injector and fueling the cylinder only via the direct injector. The method further comprises, when reactivating the cylinder from deactivation, enabling both the port injector and the direct injector, and injecting a higher amount of fuel via the direct injector while simultaneously injecting a lower amount of fuel via the port injector.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: January 2, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Gopichandra Surnilla
  • Patent number: 9835101
    Abstract: Embodiments for operating an engine with skip fire are provided. In one example, a method comprises during a skip fire mode or during a skip fire mode transition, port injecting a first fuel quantity to a cylinder of an engine, the first fuel quantity based on a first, predicted air charge amount for the cylinder and lean of a desired air-fuel ratio, and direct injecting a second fuel quantity to the cylinder, the second fuel quantity based on the first fuel quantity and a second, calculated air charge amount for the cylinder.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: December 5, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas G. Leone, Brad Alan Boyer, Mrdjan J. Jankovic
  • Patent number: 9790876
    Abstract: For exhaust gas recirculation (EGR) fueling control, at least one donor cylinder of a plurality of cylinders in an engine provides exhaust gas to an air intake for the plurality of cylinders. A fuel variable restriction initially provides fuel concurrent with an intake stroke for the at least one donor cylinder in response to a transition from withholding the fuel to the plurality of cylinders.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 17, 2017
    Assignee: Cummins IP, Inc.
    Inventors: Samuel C. Geckler, Andrea Beck, Anthony Kyle Perfetto
  • Patent number: 9677498
    Abstract: Methods and systems are provided for adjusting an ignition energy provided to an engine cylinder upon reactivation from a VDE mode of operation. Ignition energy is increased by increasing an ignition coil dwell time and/or an ignition coil strike frequency. The increased ignition energy improves combustion stability during the transition out of the VDE mode of operation.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: June 13, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Garlan J. Huberts, Michael Damian Czekala, Nelson William Morrow, Jr.
  • Patent number: 9605601
    Abstract: Embodiments for operating an engine with skip fire are provided. In one example, a method comprises during a skip fire mode or during a skip fire mode transition, port injecting a first fuel quantity to a cylinder of an engine, the first fuel quantity based on a first, predicted air charge amount for the cylinder and lean of a desired air-fuel ratio, and direct injecting a second fuel quantity to the cylinder, the second fuel quantity based on the first fuel quantity and a second, calculated air charge amount for the cylinder.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: March 28, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas G. Leone, Brad Alan Boyer, Mrdjan J. Jankovic
  • Patent number: 9599047
    Abstract: A firing module determines a target number of activated cylinders of an engine based on a torque request and a present gear ratio of a transmission. A combination identification module, based on the torque request, identifies a combination including a possible number of activated cylinders and a possible transmission gear ratio, wherein at least one of: the possible number of activated cylinders is different than the target number of activated cylinders; and the possible transmission gear ratio is different than the present gear ratio of the transmission.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: March 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Randall S. Beikmann, Nitish J. Wagh
  • Patent number: 9562485
    Abstract: The disclosure describes an internal combustion engine and a method for operating an internal combustion engine, in which an electronic controller is programmed to determine whether the internal combustion engine is operating within a cylinder cutout enabling region and, when the engine operates in the cylinder cutout enabling region, to cutout one or more of the engine cylinders by causing the cutout cylinder's fuel injector to cease injecting fuel into cutout cylinder, and to also cause the still-active engine cylinders to operate with an additional amount of fuel such that a steady state engine torque output remains unchanged before and after the second cylinder is cutout.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: February 7, 2017
    Assignee: Caterpillar Inc.
    Inventors: Derek E. Nieman, Ramamurthy Vaidyanathan, Derek Tanis, Jeffrey J. Ribordy, Frank J. Lombardi
  • Patent number: 9556811
    Abstract: A system includes a cylinder control module that determines target numbers of cylinders of an engine to be activated during a period, determines, based on the target numbers and an engine speed, N predetermined sequences for controlling the cylinders of the engine during the period, determines whether a transition parameter is associated with at least one of the N predetermined subsequences and selectively adjusts at least one of the N predetermined subsequences based on the determination of whether a transition parameter is associated with at least two of the N predetermined sequences. The system further includes a cylinder actuator module that, during the period, controls the cylinders of the engine based on the N predetermined sequence and based on the at least one selectively adjusted predetermined sequences.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: January 31, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Nitish J. Wagh, Randall S. Beikmann
  • Patent number: 9395274
    Abstract: The invention relates to a method for testing equipment with variable geometries of an aircraft engine, especially turbomachine. In a first phase, a computer tests the chain of controls of the fuel dosage function. In a second phase, said computer tests the jacks of the chains of controls of equipment with variable geometries by keeping the aircraft shut-off valve open during rod extensions of jacks and by controlling the injection shut-off valve to expel fuel into the injection chamber during their rod retractions.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: July 19, 2016
    Assignee: SNECMA
    Inventors: Matthieu Dussap, Antoine Veyrat-Masson
  • Patent number: 9388786
    Abstract: An ignition system including: a first control unit configured to generate a high voltage that is to be supplied to a spark plug at a secondary winding of an ignition coil by applying and then cutting off a primary current to a primary winding of the ignition coil; a second control unit configured to cut off electric power supplied from the secondary winding to the spark plug by energizing the primary winding after the first control unit cuts off the primary current; a re-energizing current measuring unit configured to measure a re-energizing current energizing the primary winding by the second control unit; and an energizing period determining unit configured to determine an energizing period during which the primary current is applied to the primary winding by the first control unit, corresponding to the re-energizing current measured by the re-energizing current measuring unit.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: July 12, 2016
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Daisuke Nakano
  • Patent number: 9316165
    Abstract: Various methods for controlling EGR rate are disclosed. In one embodiment, a method for controlling EGR rate in an engine comprises routing exhaust from a first cylinder group to an intake coupled to the engine, and not to atmosphere, routing exhaust from a second cylinder group to atmosphere, and, during a first engine operating condition, injecting fuel to each cylinder in the first cylinder group while injecting fuel to a subset of cylinders of the second cylinder group.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: April 19, 2016
    Assignee: General Electric Company
    Inventors: Omowoleola Chukuwuemeka Akinyemi, Adam Klingbeil
  • Patent number: 9267486
    Abstract: An internal combustion engine is operable in an efficiency mode providing a first power output range between zero and a transition power output and in a power mode providing a second power output range between the transition power output and a maximum power output. The efficiency mode can include a first ignition timing and a first air/fuel ratio of the mixture to avoid premature auto-ignition, and the power mode can include a second ignition timing and a second air/fuel ratio of the mixture to avoid premature auto-ignition of the mixture. To further enable knock free operation of such an engine, turbulence can be imparted to the mixture to promote a faster burn duration and high temperatures that may lead to premature auto-ignition of the mixture can be avoided.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: February 23, 2016
    Assignee: Pinnacle Engines, Inc.
    Inventors: James M. Cleeves, Michael A. Willcox, Simon David Jackson, Nicholas Manov
  • Patent number: 9243573
    Abstract: Various systems and methods are described for deactivation and reactivation of a cylinder bank in a V-engine. In one example, the cylinder bank is deactivated responsive to an indication of misfire based on crankshaft acceleration and exhaust air fuel ratio. The cylinder bank is reactivated sequentially based on exhaust catalyst temperature.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: January 26, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Robert Sarow Baskins, Joseph Patrick Whitehead, Craig Alan Smith, Timothy Robert Gernant, Scott Richard Hughes
  • Patent number: 9178377
    Abstract: A charging device having a coil for inductive electric charging of a device, in particular of a battery, including a control unit having a temperature sensor for detecting a temperature, the temperature sensor being situated in the area of application for applying the device, and is connected to the control unit, the temperature sensor being situated laterally next to the coil and adjacent to the coil.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: November 3, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Marcin Rejman, Juergen Mack
  • Patent number: 9145835
    Abstract: In an internal combustion engine valve drive device having at least one switch gate for valve lift switching by converting a rotation of at least a first and a second cam element into an axial movement by first and second actuators provided for axially displacing the first cam element and the second cam element in a first switching direction via an operative connection of the first actuator with the switch gate and the second actuator provided for axially displacing the second cam element in the same switching direction via an operative connection with the switch gate, the device including a control unit controlling the axial displacement of the first and second cam elements in the same switching direction under the control unit by actuating the first and second actuators at the same time.
    Type: Grant
    Filed: December 14, 2013
    Date of Patent: September 29, 2015
    Assignee: DAIMLER AG
    Inventors: Thomas Stolk, Alexander Von Gaisberg-Helfenberg
  • Patent number: 9109520
    Abstract: Provided is a control apparatus for an internal combustion engine, which can determine whether or not there is a failure concerning a switching of an operational state of an intake valve, in the internal combustion engine that includes a valve stop mechanism that is capable of switching the operational state of the intake valve between a valve operating state and a valve closed/stopped state, without the need of adding a new sensor for the failure determination. An intake variable valve operating apparatus (66) is provided that includes a valve stop mechanism capable of switching the operational state of the intake valve (62) between the valve operating state and the valve closed/stopped state. A crank angle sensor (72) is provided for detecting the crank angle of the internal combustion engine (12). An intake pressure sensor (56) is provided for detecting the actual intake pressure pim.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: August 18, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Norihisa Nakagawa, Takashi Nishikiori
  • Patent number: 9046051
    Abstract: A spark-ignition, direct-injection internal combustion engine is coupled to an exhaust aftertreatment system including a three-way catalytic converter upstream of an NH3-SCR catalyst. A method for operating the engine includes operating the engine in a fuel cutoff mode and coincidentally executing a second fuel injection control scheme upon detecting an engine load that permits operation in the fuel cutoff mode.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: June 2, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kushal Narayanaswamy, Calvin K. Koch, Paul M. Najt, Gerald A. Szekely, Jr., Joel G. Toner
  • Patent number: 9002624
    Abstract: Methods and systems are provided for adjusting cylinder valve timings to enable a group of cylinders to operate and combust while another group of cylinders on a second are selectively deactivated. Valve timing may be adjusted to allow flow of air through the inactive cylinders to be reduced, lowering catalyst regeneration requirements upon reactivation. The valve timing may alternatively be adjusted to enable exhaust gas to be recirculated to the active cylinders via the inactive cylinders, providing cooled EGR benefits.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: April 7, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: James Michael Kerns, Stephen B. Smith, Adam Nathan Banker, Michael James Uhrich
  • Patent number: 8989991
    Abstract: Disclosed are an apparatus and a method for processing a fuel cut starting or releasing the fuel cut using a tilt angle of a vehicle or a clearance angle of an acceleration pedal. An exemplary embodiment of the present invention can reflect driving habit or acceleration intention of a driver by interlocking a clearance angle of the acceleration pedal in addition to starting or releasing a fuel cut according to a tilt angle of a vehicle, thereby increasing fuel efficiency driving or convenience of driving. The exemplary embodiment of the present invention can improve stability of driving by applying a haptic technology.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: March 24, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Back Kim, Hae Dong Lee, Kee Koo Kwon, Gwang Su Kim
  • Patent number: 8985088
    Abstract: Various systems and method for controlling exhaust gas recirculation (EGR) in an internal combustion engine are provided. In one embodiment, a method includes injecting fuel to a subset of cylinders that includes less than all cylinders of a first cylinder group to obtain a target EGR rate. The first cylinder group provides exhaust gas through an exhaust gas recirculation (EGR) passage structure fluidly coupled between the first cylinder group and an intake passage structure. The method further includes injecting fuel to at least one cylinder of a second cylinder group. The second cylinder group provides substantially no exhaust gas through the EGR passage structure.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 24, 2015
    Assignee: General Electric Company
    Inventors: Neil Xavier Blythe, Shawn Michael Gallagher, James Robert Mischler, Luke Henry
  • Patent number: 8967120
    Abstract: An engine control system controls an internal combustion engine so that some of a plurality of cylinders in a multi-cylinder internal combustion engine are made to rest and reduced-cylinder operation takes place. Each cylinder comprises a piston, an intake valve and an exhaust valve. In a resting cylinder during reduced-cylinder operation, when the piston moves downwards, the engine control system opens both the intake valve and the exhaust valve, and when the piston moves upwards, the engine control system opens the intake valve and closes the exhaust valve.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: March 3, 2015
    Assignee: Hino Motors, Ltd.
    Inventors: Takatoshi Furukawa, Hideki Kato, Shotaro Iikubo
  • Patent number: 8967118
    Abstract: A method includes: retarding spark timing relative to a predetermined spark timing when an engine torque output reduction is requested for a gear shift; estimating a first torque output of an engine based on N cylinders of the engine being fueled, an engine speed, an air per cylinder (APC), and the predetermined spark timing; estimating a second torque output of the engine based on M cylinders being fueled, the engine speed, the APC, and the spark timing. determining an initial pressure ratio across a turbocharger compressor; determining an adjustment based on M and the first and second torque outputs; generating a desired pressure ratio across the turbocharger compressor based on the adjustment and the initial pressure ratio; and controlling opening of a turbocharger wastegate based on the desired pressure ratio. N is a total number of cylinders of the engine and M is less than or equal to N.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: March 3, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Christopher E. Whitney, Jeffrey M. Kaiser, Per Andersson, Timothy L. Gibbs
  • Patent number: 8955498
    Abstract: Methods and systems are provided for adjusting cylinder valve timings to enable a group of cylinders to operate and combust while another group of cylinders on a second are selectively deactivated. Valve timing may be adjusted to allow flow of air through the inactive cylinders to be reduced, lowering catalyst regeneration requirements upon reactivation. The valve timing may alternatively be adjusted to enable exhaust gas to be recirculated to the active cylinders via the inactive cylinders, providing cooled EGR benefits.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: February 17, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: James Michael Kerns, Stephen B. Smith, Adam Nathan Banker, Michael James Uhrich
  • Patent number: 8944026
    Abstract: A method for partial cylinder cutoff is provided. The method comprises operating a multi-cylinder internal combustion engine with applied ignition, in which an odd number n of cylinders is arranged in line, and during partial-load operation when engine load is below threshold, enabling a partial cutoff of the cylinders, the partial cutoff comprising operating each cylinder only intermittently such that each cylinder is fired and cut off in turn at an interval of (2*720° CA)/n.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: February 3, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Tobergte, Carsten Weber, Kay Hohenboeken, Helmut Hans Ruhland, Bert Pingen
  • Patent number: 8949000
    Abstract: A control device for an internal combustion engine performs rich control when a fuel cutoff operation is terminated and fuel supply to a combustion chamber is restarted, and the engine includes a plurality of the combustion chambers and a fuel supply cycle is repeated. The control device includes a controller configured to set a first moment and a second moment such that the fuel supply cycle which includes the first moment is different from the fuel supply cycle which includes the second moment, the first moment being a moment at which the rich control is started in a first combustion chamber of the plurality of combustion chambers, and the second moment being a moment at which the rich control is started in a second combustion chamber of the plurality of combustion chambers that is different from the first combustion chamber.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiko Fujiwara, Koichi Kimura, Kazuhisa Matsuda
  • Patent number: 8935074
    Abstract: An apparatus to control an internal combustion engine includes a cylinder operation controller configured to switch a cylinder operation between an all-cylinder operation and a cylinder deactivation operation. A deactivation time parameter integrating device is configured to integrate a deactivation time parameter indicating a deactivation time of the part of the plurality of cylinders to calculate an integrated deactivation time parameter. An inhibiting device is configured to inhibit the cylinder deactivation operation if the integrated deactivation time parameter calculated by the deactivation time parameter integrating device is larger than or equal to a reference value. The deactivation time parameter integrating device holds the integrated deactivation time parameter as an initial value after an operation of the internal combustion engine is stopped.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: January 13, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuhiko Imamura, Masaaki Nagashima, Hiroshi Yatani, Tomoharu Hozumi, Nobuaki Ito, Chiharu Shimizu
  • Patent number: 8931255
    Abstract: One embodiment is a unique strategy for raising exhaust temperatures which includes deactivating a first group of cylinders while maintaining a second group of cylinders in a combustion mode and injecting fuel into each of one of the second group of cylinders not earlier than 2 degrees before top dead center (TDC). The strategy also includes passing fuel rich exhaust from the second group of cylinders into an exhaust pathway and oxidizing at least a portion of the fuel rich exhaust in the exhaust pathway. In one form, the oxidizing occurs independent of any catalytic influence. Other embodiments include unique methods, systems, and apparatus for raising exhaust temperatures and/or regenerating one or more components of an aftertreatment system. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: January 13, 2015
    Assignee: Cummins Inc.
    Inventor: Michael A. Wilson
  • Patent number: 8924130
    Abstract: A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on a time delay and line length of each sample of a set of exhaust gas sensor responses collected during a commanded change in air-fuel ratio. In this way, the exhaust gas sensor may be monitored utilizing robust parameters in a non-intrusive manner.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: December 30, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael James Uhrich, Adam Nathan Banker, James Michael Kerns, Imad Hassan Makki
  • Patent number: 8919097
    Abstract: Methods and systems are provided for selecting a group of cylinders for selective deactivation, in a variable displacement engine system, based at least on a regeneration state of an exhaust catalyst. The position of one or more valves and throttles may be adjusted based on the selective deactivation to reduce back-flow through the disabled cylinders while also maintaining conditions of a downstream exhaust catalyst. Pre-ignition and knock detection windows and thresholds may also be adjusted based on the deactivation to improve the efficiency of knock and pre-ignition detection.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: December 30, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: James Michael Kerns, Michael James Uhrich, Stephen B. Smith, Adam Nathan Banker
  • Patent number: 8918267
    Abstract: A control apparatus for an internal combustion engine is provided, the control apparatus being capable of effectively suppressing the inflow of fresh air into a catalyst due to an operational delay of the valve stop mechanism when an execution request for fuel cut is issued. There is provided a valve stop mechanism capable of changing the operational states of intake valves and exhaust valves between a valve operating state and a valve closed/stopped state. The operational states of the intake and exhaust valves are changed into the valve closed/stopped state, if the engine rotational speed decreases to or below a predetermined rotational speed when the engine rotational speed is higher than the predetermined rotational speed in a case where an execution request for fuel cut is detected and the temperature of the catalyst is not lower than a predetermined temperature during operation of an internal combustion engine.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: December 23, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Norihisa Nakagawa, Takashi Nishikiori
  • Patent number: 8909460
    Abstract: A multi-cylinder internal combustion engine is provided with a system for the variable actuation of the intake valves. At least one part of the engine cylinders is deactivated, cutting off fuel supply to said cylinders, under operating conditions that do not require the maximum power of the engine and in which one wants to reduce fuel consumption. The intake valves of the deactivated cylinders are kept at least partly open during at least one part of the discharge stages in the deactivated cylinders, hence, in the deactivated cylinders, part of the burnt gases generated during the operation prior to the deactivation flows into the respective intake conduits during the discharge stage of each cylinder. The intake valves are closed after the discharge stage. The intake valves of the deactivated cylinders are further kept closed during the compression and expansion stages in each deactivated cylinder.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: December 9, 2014
    Assignee: C.R.F. Società Consortile per Azioni
    Inventors: Marco Lucatello, Fabio Borean
  • Patent number: 8893667
    Abstract: An internal combustion engine includes a deactivatable cylinder group, a constantly operating cylinder group, a first water passage, a second water passage, an upstream integrated water passage, a downstream integrated water passage, a connecting passage, a third water passage, and a device. The downstream integrated water passage includes a junction and an upstream end. The upstream end is closer to the second water passage than to the first water passage in the downstream integrated water passage. The third water passage connects the connecting passage and a portion provided between the junction and the upstream end in the downstream integrated water passage. The device is provided adjacent to at least a part of the third water passage to exchange heat with water flowing in the third water passage.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: November 25, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Shinji Shimoyama
  • Patent number: 8892337
    Abstract: An apparatus for detecting imbalance abnormality in an air-fuel ratio between cylinders in a multi-cylinder internal combustion engine according to the present invention increases a fuel injection quantity to a predetermined target cylinder to detect imbalance abnormality in an air-fuel ratio between cylinders at least based upon a rotation variation of the target cylinder after increasing the fuel injection quantity. The increase in the fuel injection quantity is carried out in the middle of performing the post-fuel-cut rich control. Since timing of the post-fuel cut rich control is used to increase the fuel injection quantity, the exhaust emission deterioration due to abnormality detection execution can be prevented as much as possible.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: November 18, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shota Kitano, Hitoshi Tanaka, Isao Nakajima, Yoshihisa Oda, Masashi Hakariya, Kiyotaka Kushihama, Kazuyuki Noda, Akihiro Katayama, Yuichi Kohara, Katsumi Adachi
  • Patent number: 8869773
    Abstract: A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. In general, a firing control unit determines working chamber firings during operation of the engine that are suitable for delivering a desired engine output. In one aspect, the firing control unit is arranged to isolate the generation of firing sequences having frequency components in a frequency range of concern and to alter the firing sequence in a manner that reduces the occurrence of frequency components in the frequency range of concern. In another aspect, a filter is arranged to filter a feedback signal to provide a filtered feedback signal that is used in the determination of the working chamber firings. In preferred embodiments, the frequency characteristics of the filter are variable.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: October 28, 2014
    Assignee: Tula Technology, Inc.
    Inventors: Adya S. Tripathi, Farzad Sahandiesfanjani, Biswa R. Ghosh
  • Patent number: 8839766
    Abstract: A variety of methods and arrangements for managing transitions between operating states for an engine are described. In one aspect, an engine is operated in a particular operating state. A transition is made to another operating state. During that transition, the engine is operated in a skip fire manner.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: September 23, 2014
    Assignee: Tula Technology, Inc.
    Inventor: Louis J. Serrano
  • Patent number: 8833345
    Abstract: Engine control apparatus includes, but is not limited to a determining device for determining whether or not the engine is operated under predetermined deceleration operating conditions or predetermined acceleration operating conditions and for individually deactivating two or more cylinders in a disenabling sequence which is different from the firing sequence if the engine is operated under predetermined deceleration operating conditions, and/or for individually reactivating two or more of the cylinders in a reactivating sequence which is different from the firing sequence if the engine is operated under predetermined acceleration conditions.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: September 16, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Klaus Pochner, Enrico Tropschug, Christopher Whitney
  • Publication number: 20140251282
    Abstract: In one aspect, an engine controller for an engine including multiple working chambers is described. The engine controller includes a mass air charge determining unit that estimates a mass air charge or amount of air to be delivered to a working chamber. Firing decisions made for a firing window of one or more firing opportunities are used to help determine the mass air charge. The engine controller also includes a firing controller, which is arranged to direct firings to deliver a desired output. Fuel is delivered to a working chamber based on the estimated mass air charge.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Applicant: TULA TECHNOLOGY, INC.
    Inventors: Allan J. KOTWICKI, Joel D. VAN ESS
  • Patent number: 8826891
    Abstract: Provided is a control apparatus for an internal combustion engine which can successfully determine whether or not a failure concerning a stopping operation of an exhaust valve has occurred, without the need of providing a dedicated sensor for the failure determination. An intake variable valve operating apparatus (62) and an exhaust variable valve operating apparatus (64) are included that have valve stop mechanisms capable of switching each operational state of an intake valve (58) and an exhaust valve (60) between a valve operating state and a valve closed/stopped state.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: September 9, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takashi Nishikiori, Norihisa Nakagawa
  • Patent number: 8812221
    Abstract: A stop control system for an internal combustion engine, which is capable of accurately stopping a piston at a predetermined position during stoppage of the engine while preventing occurrence of untoward noise and vibration. After stopping the engine 3, the stop control system 1 for the engine 3 according to the present invention executes a first stage control (step 34) in which a throttle valve 13a is controlled to a first stage control target opening degree ICMDOFPRE smaller than a second predetermined opening degree ICMDOF2, in order to stop the piston at the predetermined position, before executing a second stage control (step 42) in which the throttle valve 13a is controlled to the second predetermined opening degree ICMDOF2.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: August 19, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tomoharu Hozumi, Atsushi Mitsui, Takeshi Aoki, Hiroshi Yatani, Kazuhiko Imamura
  • Patent number: 8788182
    Abstract: A system for a vehicle includes a trigger module, a fuel control module, and a cylinder control module. The trigger module generates a trigger when an engine speed is greater than a first predetermined speed. The first predetermined speed is greater than zero. The fuel control module cuts off fuel to cylinders of the engine in response to the generation of the trigger. The cylinder control module selectively disables opening of intake and exhaust valves of the cylinders in response to the generation of the trigger after the fuel is cut off.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: July 22, 2014
    Inventor: Mike M. McDonald
  • Patent number: 8762028
    Abstract: A method of preventing damage to a Gasoline Particulate Filter (GPF) of a vehicle adapted to Cylinder De-activation (CDA) may include monitoring GPF pressure difference that measures a pressure difference of the GPF and determines an accumulation amount of soot in the GPF in accordance with the measured pressure difference of GPF; comparing pressure difference that compares the measured pressure difference of the GPF with a predetermined reproduction pressure difference; calculating GPF temperature that calculates a temperature in the GPF in accordance with each one of CDA modes, based on the accumulation amount of soot and an average oxygen concentration of an exhaust gas for the each one of the CDA modes; and setting CDA mode that determines a number of cylinders available for an CDA operation based on the calculated temperature and a predetermined temperature established for preventing the GPF from a damage.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: June 24, 2014
    Assignee: Hyundai Motor Company
    Inventors: Taewook Kim, Jinha Lee