Controlling Fuel Quantity Patents (Class 701/104)
  • Patent number: 11453396
    Abstract: A vehicle control method for controlling a vehicle in which a sailing control for traveling under inertia is executed when a vehicle is traveling. Each time the sailing control is executed, a history of sailing control is stored as history information classified according to situations in which sailing control was canceled. Also, a current travel situation is specified, history information corresponding to a current travel situation is specified from the stored history information, and whether to allow or disallow sailing control is determined based on the specified history information.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: September 27, 2022
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yusuke Nakane, Takeshi Hirata, Takanobu Sawada
  • Patent number: 11421616
    Abstract: Methods and systems for calculating a plurality of aging factors in a system operating an engine. The calculated aging factors may include one or more of fuel injector drift, exhaust gas recirculation valve obstruction, and mass air flow sensor bias. Mass flow throughout the system, and pressures and temperatures within the system, are observed in an approach that relies on mass preservation concepts to estimate drift, obstruction and bias estimates.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: August 23, 2022
    Assignee: Garrett Transportation I Inc.
    Inventors: Tomas Poloni, Jaroslav Pekar, Paul Dickinson
  • Patent number: 11385070
    Abstract: A route navigation apparatus comprises: an output device configured to output music information, in an audible form, to a user; a memory; and at least one processor or circuit which functions as: a selection unit configured to select predetermined music information in accordance with an operation that has been made by the user with respect to the output music information; and a provision unit configured to provide a route corresponding to the selected predetermined music information to the user.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: July 12, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Kazuya Watanabe
  • Patent number: 11370264
    Abstract: Secondary loop air conditioning and heat pump systems include a reservoir with a capsule holding a phase change material.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: June 28, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Jing He, Loren John Lohmeyer, III, Angelo Patti, Manfred Koberstein
  • Patent number: 11346299
    Abstract: A method for operating an internal combustion engine having a common-rail injection system as a function of a quantity of fuel injected. The method includes determining an information item about a relative-pressure characteristic from a characteristic of an absolute rail pressure in a high-pressure reservoir of the common-rail injection system; determining the quantity of fuel injected as a function of the information item about the relative-pressure characteristic, and with the aid of a trained functional model, in particular, a nonparametric functional model or a neural network; operating the internal combustion engine as a function of the quantity of fuel injected.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: May 31, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Joerg Schmitt
  • Patent number: 11333099
    Abstract: A skip fire engine controller is disclosed that commands an early direct-injection of fuel during a skipped working cycle in which a cylinder is not exhausted. With early direct injection, the fuel has more time to vaporize and mix with air for combustion in an immediately following working cycle in which the cylinder is fired. By increasing the degree of vaporization and mixing, the combustion is both cleaner and more efficient.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: May 17, 2022
    Assignee: Tula Technology, Inc.
    Inventors: Andrew W. Phillips, Jerry F. Fuschetto
  • Patent number: 11326536
    Abstract: An internal combustion engine control apparatus is configured to control an internal combustion engine including a piston reciprocating in a cylinder and a fuel injector arranged to inject a fuel into a combustion chamber facing the piston in the cylinder. The internal combustion engine control apparatus includes an electronic control unit having a microprocessor and a memory. The microprocessor is configured to perform controlling the fuel injector so as to inject the fuel in an injectable area from a first crank angle at which an intake stroke is started to a second crank angle at which a compression stroke is ended, and setting an injection frequency of the fuel injected by the fuel injector in the injectable area. The microprocessor is configured to perform the setting including setting the injection frequency between once and four times.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: May 10, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Ryuichi Hata, Daiki Yamazaki, Hidekazu Hironobu, Masatoshi Nakajima, Nobuaki Ito, Takaya Kawana
  • Patent number: 11286873
    Abstract: A control device includes a drive unit configured to supply electric power to a fuel injection valve to perform valve open drive to supply fuel to a combustion chamber of an internal combustion engine; and a correction unit configured to correct a fuel injection amount of the fuel injection valve. The correction unit is configured to learn the fuel injection amount of the fuel injection valve when NOx purge is performed to reduce and purify the NOx occlusion catalyst.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: March 29, 2022
    Assignee: DENSO CORPORATION
    Inventors: Makoto Tanaka, Masatake Wada
  • Patent number: 11261819
    Abstract: A method operates a fuel-supply system for an internal combustion engine. The fuel-supply system contains a high-pressure fuel pump, a high-pressure fluid accumulator having a fuel-injection valve, and a high-pressure sensor. A measurement signal of the sensor is representative of a pressure within the high-pressure fluid accumulator. The high-pressure fuel pump is fluidically connected on the outlet side to the high-pressure fluid accumulator. A respective maximum injection quantity of the fuel-injection valve is determined depending on the measurement signal of the high-pressure sensor. The injection quantity is determined depending on an efficiency characteristic representing the efficiency of the high-pressure fuel pump, the efficiency characteristic depending on the measurement signal of the high-pressure sensor.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: March 1, 2022
    Assignee: Vitesco Technologies GmbH
    Inventors: Christoph Klesse, Tobias Ritsch
  • Patent number: 11236695
    Abstract: Methods and systems are provided for monitoring a fuel injector of an internal combustion engine. In one embodiment, a method includes: receiving a set of feature data, the feature data sensed from a fuel injector during a fuel injection event; processing, by a processor, the set of feature data with a decision tree model to generate a prediction of a fault status; and selectively generating, by the processor, a notification signal based on the prediction.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 1, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jin Shen, Jeffrey M. Hutmacher, Patricia M. Laskowsky, Dana J. Suttman, Iman Mohammadrezazadeh, Ruggero Scorcioni, Vincent DeSapio
  • Patent number: 11220975
    Abstract: Systems and methods for improving accuracy of an amount of fuel injected to an engine are disclosed. In one example, timing of a fuel injector off command is adjusted according to attributes of fuel injector holding current so that a fuel injector may provide a requested fuel amount. The fuel injector off command may be adjusted according to an amount of holding current that is expected to be flowing through the fuel injector at a time when the fuel injector is commanded off.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: January 11, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Thomas, Rani Kiwan, Ian D Campbell, Paul Hollar
  • Patent number: 11216721
    Abstract: A method for calculating a neuron layer of a multi-layer perceptron model that includes a permanently hardwired processor core configured in hardware for calculating a permanently predefined processing algorithm in coupled functional blocks, a neuron of a neuron layer of the perceptron model being calculated with the aid of an activation function, the activation function corresponding to a simplified sigmoid function and to a simplified tan h function, the activation function being formed by zero-point mirroring of the negative definition range of the exponential function.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: January 4, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Andre Guntoro
  • Patent number: 11187192
    Abstract: Methods and systems are provided for conducting diagnostics to indicate whether a fuel system and/or an evaporative emissions system of a vehicle has a source of undesired evaporative emissions, or not. A method comprises conducting such a diagnostic via evacuating the fuel system to a target vacuum, then sealing the fuel system from atmosphere and monitoring a pressure bleed-up in the fuel system, and dynamically adjusting a pressure bleed-up threshold responsive to one or more conditions that impact the pressure bleed-up during the diagnostic, and indicating undesired evaporative emissions responsive to the pressure bleed-up reaching the adjusted pressure bleed-up threshold. In this way, interpretation of the results of such a diagnostic may be more robust, completion rates may improve, and engine operation may be improved.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: November 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Aed M. Dudar, Mark Peters, Dennis Yang
  • Patent number: 11168631
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which detects or estimates an engine speed achieved by combustion in an n-th cycle; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in an (n+1)-th cycle. If the engine speed achieved by the combustion in the n-th cycle falls in the resonance range, the injection amount setting section sets the fuel injection amount for an (n+1)-th cycle to be larger than the fuel injection amount injected when the engine speed is higher than or equal to an upper limit of the resonance range.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: November 9, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Patent number: 11143083
    Abstract: A storage device stores mapping data and association data. The mapping data defines a mapping that outputs an estimated value of the temperature of a catalyst using a warm-up operation amount variable and the previous value of the estimated value as an input. The association data associates the integrated value of an intake air amount of an internal combustion engine from the startup of the engine and the temperature of the catalyst. The execution device repeatedly calculates the estimated value based on the output of the mapping. When the correspondence relationship between the integrated value and the estimated value is different from the correspondence relationship between the integrated value and the temperature of the catalyst in the association data, the warm-up process is determined to have an anomaly.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: October 12, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Harufumi Muto, Akihiro Katayama, Yuki Ikejiri, Yosuke Hashimoto
  • Patent number: 11137416
    Abstract: A sensor module includes an X-axis angular velocity sensor device that outputs digital X-axis angular velocity data, a Y-axis angular velocity sensor device that outputs digital Y-axis angular velocity data, a Z-axis angular velocity sensor device that outputs digital Z-axis angular velocity data, an acceleration sensor device that outputs digital X-axis, Y-axis, and Z-axis acceleration data, a microcontroller, a first digital interface bus that electrically connects the X-axis angular velocity sensor device, the Y-axis angular velocity sensor device, and the Z-axis angular velocity sensor device to a first digital interface, and a second digital interface bus that electrically connects the acceleration sensor device to a second digital interface.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: October 5, 2021
    Inventors: Taketo Chino, Yoshikuni Saito, Nobuyuki Imai
  • Patent number: 11118523
    Abstract: Provided is a fuel injection device and a control unit therefor which enable reliable ignition even in a case where fuel pressure is low immediately after starting an engine. In the control unit for controlling an injector injecting fuel into an internal combustion engine, a plurality of injectors is provided in the internal combustion engine, a static flow rate of a first injector is configured to be smaller than a static flow rate of a second injector. In a case where a fuel pressure of fuel supplied by a pressurizing unit is lower than a set value set lower than a fuel pressure in warming up, an injection ratio of the first injector is controlled to increase according to a difference between a fuel pressure of fuel from the pressurizing unit and a fuel pressure in warming up.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: September 14, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki Hosaka, Taisuke Sugii, Eiji Ishii, Yoshihiro Sukegawa, Masayuki Saruwatari
  • Patent number: 11060477
    Abstract: A spark ignition internal combustion engine includes: intake and exhaust valves disposed at a ceiling part of a combustion chamber; and a fuel injection valve including a tip end portion including injection holes, and being structured to inject fuel through the injection holes toward a crown of a piston, wherein the tip end portion of the fuel injection valve is arranged in a region of the ceiling part surrounded by the intake and exhaust valves. A fuel injection control includes: determining a tip end portion fuel temperature directly or indirectly, which is a temperature of fuel at the tip end portion of the fuel injection valve; and setting a fuel injection timing advanced, in response to a condition that the tip end portion fuel temperature is higher than a temperature threshold value, wherein the temperature threshold value relates to flash boiling of fuel at the injection holes.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: July 13, 2021
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yoshihiro Imaoka, Yoshihiko Iwabuchi
  • Patent number: 10970669
    Abstract: Some embodiments provide a system to facilitate transaction processing associated with an industrial asset supply chain having a first entity and a second entity. A first entity computer processor may retrieve, from a first entity database, information associated with pre-delivery data about the industrial asset. The first entity computer processor may then record pre-delivery data about the industrial asset via a secure, distributed transaction ledger. A second entity computer processor may retrieve, from a second entity database, information associated with a post-delivery event involving the industrial asset. The second entity computer processor may then record post-delivery event data about the industrial asset via a secure, distributed transaction ledger. The post-delivery event data might indicate, for example, that the industrial asset has been delivered, has been installed, is working properly, has been used, etc.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: April 6, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Walter Charles Yund, Patricia Denise Mackenzie, Joseph James Salvo, John William Carbone, Benjamin Edward Beckmann, Dan Yang, Peter Koudal
  • Patent number: 10968856
    Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 in a manner allowing an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES), and the SPCCI combustion is performed (#13: YES), the ECU 60 executes fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14), so as to attain torque reduction for the vehicle attitude control. On the other hand, when the SPCCI combustion is not performed (#13: NO), the ECU 60 executes ignition retardation control of retarding an ignition timing of the spark plug 16 (#15).
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 6, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Shinji Takayama, Takeatsu Ito, Michio Ito, Kenko Ujihara, Daisaku Ogawa, Daisuke Umetsu
  • Patent number: 10954880
    Abstract: Methods and systems are provided for controlling fuel injection to cylinders of an engine in a vehicle. In one example, a method comprises monitoring an electrical energy profile associated with a fuel injector that has been commanded to inject a predetermined amount of a fuel into an engine cylinder, inferring a fuel injection pressure based on the electrical energy profile, and controlling a subsequent fuel injection based on the inferred fuel injection pressure. In this way, fuel injection may be controlled without relying on a pressure sensor in a fuel rail that supplies fuel to the fuel injector, under conditions where the fuel rail does not include the pressure sensor or where the pressure sensor is degraded.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: March 23, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Lyle Thomas, Ross Dykstra Pursifull
  • Patent number: 10934991
    Abstract: The invention provides an internal combustion engine combustion state detecting device such that ascertaining a combustion state using ionic current detection is carried out accurately over a wide operating range of an internal combustion engine. The internal combustion engine combustion state detecting device includes a spark plug that has a central electrode and a grounding electrode opposing across a gap, and a discharge stopping-induced current detecting device that estimates an induced current caused by a stopping of a spark discharge generated in the gap between the central electrode and the grounding electrode, wherein an ionic current detection threshold is set to a threshold value that is not affected by the induced current using the induced current estimated by the discharge stopping-induced current detecting device.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: March 2, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toshifumi Nakamura, Takahiko Inada
  • Patent number: 10920694
    Abstract: Various methods and systems are provided for an engine capable of receiving liquid and gaseous fuel. In one example, cylinder misfire may be identified based on a misfire monitor. The misfire monitor may detect misfire based on signals from a crankshaft sensor.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: February 16, 2021
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: Paul Lloyd Flynn, Aninda Bhattacharya, Ganesasubramanian Murugesan, Milan Palinda Karunaratne, Daniel Cullen
  • Patent number: 10900428
    Abstract: A controller for an internal combustion engine includes a processing circuit that performs a dither control process on condition that a temperature increase request of a catalyst is made. The processing circuit operates fuel injection valves so that during the dither control process, one or more cylinders are lean combustion cylinders in a first period and another one or more cylinders are rich combustion cylinders and so that the average value of an exhaust gas-fuel ratio is a target air-fuel ratio in a second period including the first period. The dither control process is restricted in a manner that, on condition that the rich process is performed, the degree of richening of the richest exhaust gas-fuel ratio of exhaust gas-fuel ratios in the cylinders is reduced.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: January 26, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuki Nose, Keiichi Myojo, Yoshiyuki Shogenji, Eiji Ikuta
  • Patent number: 10895207
    Abstract: A method of operating an engine assembly is provided. The engine assembly comprises an engine and a turbocharger assembly, wherein a control parameter of the turbocharger assembly is controllable in order to control a level of boost provided by the turbocharger assembly. The method comprises determining a desirable pressure limit of exhaust gases upstream of a turbine of the turbocharger assembly, predicting a desirable limit value of the control parameter to be applied to the turbocharger assembly in order to achieve the desirable pressure limit, determining an error in the desirable limit value of the control parameter, adjusting the desirable limit value of the control parameter based on the error, and controlling the operation of the turbocharger assembly such that the adjusted limit value is not exceeded.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: January 19, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Jon Dixon, Nicholas Michael Parisi, Jeffrey B. Schneyer
  • Patent number: 10882530
    Abstract: A vehicle allocation system includes for allocating, through autonomous driving, an allocation vehicle selected from a plurality of selection target vehicles is provided. Each of the plurality of selection target vehicles includes an electronic controller configured to perform hydraulic pressure control learning and autonomous driving control of a power transmission device in which a plurality of shift stages are established by combination of a plurality of hydraulic engaging devices. The at least one processing circuitry is configured to select a vehicle in which a progress degree of the hydraulic pressure control learning is low as the allocation vehicle from the selection target vehicles, based on progress degrees of the hydraulic pressure control learning before the vehicle allocation.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: January 5, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kenta Kumazaki
  • Patent number: 10845270
    Abstract: A method for diagnosing an engine in a vehicle, the method comprising: initiating a diagnostic test of the engine, disabling a cylinder of the engine, measuring a parameter indicative of performance of the engine, re-enabling the cylinder, comparing the parameter to reference data, assessing a status of the cylinder based on the comparison, and generating a diagnostic result based on the status of the disabled cylinder.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: November 24, 2020
    Assignee: Progress Rail Locomotive Inc.
    Inventors: Gregory R. Kupiec, Dennis J. Melas
  • Patent number: 10843697
    Abstract: A vibration damping control apparatus which has a control unit that calculate a pitch damping driving torque based on a pitch angular velocity of a vehicle body, and control an engine based on at least the pitch damping driving torque. The control unit stores a vehicle speed corresponding to a phase difference of ?180° in a relationship between a phase difference and a vehicle speed as an upper limit reference vehicle speed, the relationship being derived by obtaining phase characteristic of a wheelbase filter function for various vehicle speeds and obtaining a relationship between the phase difference of vertical displacements of the vehicle body at positions of front and rear wheels and a vehicle speed with respect to a pitch resonance frequency of the vehicle, and reduces the pitch damping driving torque when a vehicle speed is not higher than the upper limit reference vehicle speed.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: November 24, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yanqing Liu
  • Patent number: 10760996
    Abstract: A system for commissioning a machine such as an internal combustion engine includes commissioning probes, and a user interface having a computer receiving test data from the commissioning probes. The computer is structured to store a commissioning profile for the machine on a memory, and to populate the commissioning profile based on a compensation factor that depends on a difference between a performance response of ancillary equipment connected with the machine and an expected response. The computer outputs a commissioning suitability signal based on comparing the commissioning profile to a target profile.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: September 1, 2020
    Assignee: Caterpillar Inc.
    Inventors: Perry Converse, Michael Coppinger, Yanchai Zhang
  • Patent number: 10738728
    Abstract: A controller for an internal combustion engine includes processing circuitry. The processing circuitry is configured to execute an estimation process that estimates a density parameter of fuel in an upper layer portion of a delivery pipe and a density parameter of fuel in a lower layer portion of the delivery pipe and an operation process that includes acquiring a density parameter of the fuel injected from a fuel injection valve and operating an operation unit of the internal combustion engine based on the acquired density parameter. The estimation process includes a process that assumes that when the density of the fuel flowing into the delivery pipe is high, a greater proportion of the fuel flowing into the delivery pipe flows into the lower layer portion than when the density of the fuel flowing into the delivery pipe is low.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: August 11, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryusuke Kuroda, Masahiro Ozeki, Masanao Idogawa
  • Patent number: 10731543
    Abstract: A method of determining whether a block heater has been used prior to starting an internal combustion engine includes monitoring the temperature with time of the intake air subsequent to the start of the engine. The method also includes determining whether there is a subsequent drop in the temperature after starting. If a temperature drop is determined, a parameter of the temperature drop with time is determined. If the parameter becomes larger than a predetermined threshold, block heater use is indicated.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 4, 2020
    Assignee: DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA
    Inventors: Eduardo Maiello, Erik Schoof, Loic Gandolfi, Luca Tascedda
  • Patent number: 10669965
    Abstract: Various embodiments may include a method for operating an internal combustion engine comprising: measuring pressure oscillations assignable to a cylinder in the inlet tract at a defined operating point during normal operation; generating a corresponding pressure signal; determining a corresponding crankshaft phase angle; calculating an injection signal component caused by fuel injection by subtracting a reference base pressure oscillation signal; determining a signal phase position and a signal amplitude of the injection signal component; determining an injection start time; determining an injection quantity on the basis of the signal amplitude and reference amplitudes; and adapting operation of the internal combustion engine based on the determined injection quantity.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: June 2, 2020
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Tobias Braun, Josef Kainz
  • Patent number: 10598117
    Abstract: An injector driving device includes a control circuit of a booster circuit that charges a capacitor by repeatedly switching a booster switch ON/OFF during a voltage boost control to cause a reverse voltage in a coil, and stops the voltage boost control upon determining that a capacitor voltage has reached a corrected target value. The control circuit detects a peak value of the capacitor voltage during an OFF period of the boost switch. The control circuit also detects a capacitor voltage as an ON value during the subsequent ON period of the booster switch. A difference between the peak voltage and the ON value of the capacitor is calculated, and a post-correction target value is set by adding the difference to a reference value of a target value.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: March 24, 2020
    Assignee: DENSO CORPORATION
    Inventor: Hiroki Nambu
  • Patent number: 10539081
    Abstract: An internal-combustion engine control apparatus is obtained which can accurately perform the control toward an output target value by calculating an exhaust gas temperature more accurately, and eliminating discrepancies of a turbine flow-rate and a waste-gate-valve opening-degree. In the apparatus, a thermal efficiency calculation unit calculates thermal efficiency based on a combination in any of ignition timing, charging efficiency, an air-fuel ratio and an exhaust gas recirculation (EGR) ratio being change factors in thermal efficiency of the internal-combustion engine; an exhaust-gas loss calculation unit calculates exhaust gas loss based on thermal efficiency calculated by the thermal efficiency calculation unit, and on a combination in any of the change factors of the exhaust gas loss; and an exhaust port temperature calculation unit calculates an exhaust gas temperature at an exhaust port portion based on exhaust gas loss calculated by the exhaust-gas loss calculation unit.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: January 21, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuhiko Takahashi, Takahiko Ono
  • Patent number: 10519882
    Abstract: An internal combustion engine comprises a fuel injector, a spark plug, an evaporated fuel purge device purging evaporated fuel in the fuel tank into an intake passage, and a control device. The control device can perform spark assist control for sequentially injecting premix-forming fuel and injecting ignition assist fuel from the fuel injector, while controlling the fuel injector and spark plug so as to make an air-fuel mixture formed by the injection of ignition assist fuel burn by the spark plug by flame propagation and to make the remaining fuel burn using the heat released by the flame propagation combustion by premixed compression self-ignition, and the control device makes the injection amount of premix-forming fuel decrease without changing the injection amount of ignition assist fuel when purging evaporated fuel into the intake passage by the evaporated fuel purge device compared to when not purging it.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: December 31, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Satoshi Tsuda
  • Patent number: 10487759
    Abstract: A fuel injection controller for an internal combustion engine selects as the injection mode either single injection or split injection, counts, based on a drive current detection signal, which indicates that a drive current is generated to be fed to the direct injector, the number of occurrences of the drive current in one combustion cycle as a number-of-injections count value, and determines, based on the number-of-injections count value, whether the combustion state in the cylinder is satisfactory. The fuel injection controller determines that the combustion state in the cylinder is unsatisfactory if the number-of-injections count value in one combustion cycle is one when catalyst warm-up control is being performed with the temperature of the engine being lower than or equal to a predetermined temperature.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 26, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Ikejiri, Yoshihisa Oda
  • Patent number: 10467323
    Abstract: There is provided a method of updating a setting value of a variable parameter, the method including: obtaining a time-series data of control input and a time-series data of control output observed in control with a controller; calculating a value of the variable parameter which minimizes an output value of an evaluation function based on the obtained time-series data of the control input and the control output; and updating the setting value of the variable parameter to the calculated value of the variable parameter. The evaluation function includes a first function part in which a first norm or a second norm changes depending on the value of the variable parameter, and a second function part of which specific frequency band has an amount, by which the output value of the evaluation function is increased, larger than that of any other frequency band.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 5, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Eisuke Takahashi
  • Patent number: 10458311
    Abstract: Internal combustion engine comprising at least one cylinder and a piston supported for repeated reciprocal movement in the cylinder so as to define a combustion chamber of an engine bore diameter A-A, the internal combustion engine further comprising an ignition device arranged in said cylinder having an igniter portion and an fuel injector which are both arranged in a pre-chamber, wherein the pre-chamber comprises a plurality of orifices for providing fluid communication between said pre-chamber and the combustion chamber, and wherein the plurality of orifices are of an overall orifice area so that the ratio between the overall orifice area and the engine bore diameter A-A ranges from 0.01 mm to 0.2 mm.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: October 29, 2019
    Assignee: MAHLE Powertrain LLC
    Inventors: Hugh Blaxill, Michael Bunce
  • Patent number: 10458358
    Abstract: The invention realizes fuel microinjection volume correction with high degrees of accuracy, stability, and reliability regardless of a configuration of a transmission.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: October 29, 2019
    Assignee: Bosch Corporation
    Inventors: Atsushi Hoshino, Shouta Tashiro
  • Patent number: 10436144
    Abstract: A control device for an internal combustion engine including an in-cylinder injection fuel injection valve, and a port injection fuel injection valve, has a controller that controls injection amount ratios of the in-cylinder injection fuel injection valve and the port injection fuel injection valve in accordance with a driving condition of the engine. A fuel cut is performed at a predetermined deceleration of the internal combustion engine. The injection amount ratio of the in-cylinder injection fuel injection valve is corrected to be decreased at a fuel cut recovery at which a fuel supply is restarted from the fuel cut state, during a predetermined period from the start of the recovery.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: October 8, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Rina Kamio, Tomoyoshi Date, Daisuke Tanaka, Futoshi Yoshimura, Ryo Uchida
  • Patent number: 10428784
    Abstract: Methods and systems are provided for improving fuel usage while addressing knock by adjusting the use of spark retard and direct injection of a knock control fluid based on engine operating conditions and the composition of the injected fluid. One or more engine parameters, such as EGR, VCT, boost, throttle position, and CMCV, are coordinated with the direct injection to reduce torque and EGR transients.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: October 1, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Thomas G. Leone
  • Patent number: 10422290
    Abstract: Systems and methods for controlling an engine airpath include receiving, at a supervisory controller, an engine speed corresponding to a present engine speed, a fuel target corresponding to a request for torque from a driver and one or more state estimates generated by an estimator. The supervisory controller predicts, over a prediction horizon, a constraint violation in response to the engine speed, the fuel target, and the one or more state estimates using a prediction model, adjusts an EGR rate target to a modified value, when the constraint violation is predicted, and maintains the EGR rate target at a nominal value when the constraint violation is not predicted. A nonlinear predictive controller generates one or more actuator commands based on the EGR rate target, where the one or more actuator commands control an engine actuator such that an EGR rate of the engine airpath tracks the EGR rate target.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: September 24, 2019
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., The Regents of the University of Michigan
    Inventors: Dominic Liao-McPherson, Ilya Kolmanovsky, Mike Huang, Shinhoon Kim
  • Patent number: 10393054
    Abstract: A controller of an engine performs a failure diagnosis process for an injection valve. The failure diagnosis process increases a misfire count of the engine when a variation in rotation of the engine is equal to or greater than a predetermined variation in every predetermined cycle, and determines that the injection valve has a failure when the misfire count is equal to or greater than a first predetermined number of times over a predetermined time period. The controller determines that the multi-cylinder engine is in a predetermined load operation cycle if a volume efficiency of the multi-cylinder engine is less than a reference value, and the controller determines whether continuation of the injection mode is needed based on a comparison of the misfire count and a second predetermined number of times, wherein the second predetermined number of times is less than the first predetermined number of times.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: August 27, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hitoki Sugimoto
  • Patent number: 10378457
    Abstract: An engine speed control system for an internal combustion engine includes a throttle, and a sensor that monitors a parameter indicative of pressure or density of fuel and air in an inlet manifold of the engine. The electronic control unit is coupled with the throttle and the sensor and structured to calculate a target mass flow through the throttle, a feedforward control term based on the target mass flow, and a feedforward control term based on data produced by the sensor. The electronic control unit is further structured to vary a position of the throttle based on the feedforward and feedback control terms to adjust a mass flow through the throttle toward the target mass flow. The control system is applicable in throttle governed as well as fuel governed systems.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 13, 2019
    Assignee: Caterpillar Inc.
    Inventors: Karthik Jayasankaran, Arvind Sivasubramanian
  • Patent number: 10337443
    Abstract: Methods and systems for evaluating whether or not a fuel amount that is greater than a threshold has been release to an engine via fuel injectors when the fuel injectors are commanded off are presented. In one example, an oxygen sensor is activated and engine cranking is prevented until a pumping current of the oxygen sensor is proportionate to a concentration of oxygen sensed via the oxygen sensor so that released fuel may be observed during engine starting.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Ulrey, Michael Uhrich, Ross Pursifull, Steven Schwochert
  • Patent number: 10309332
    Abstract: When the air fuel ratio dither control is carried out, an air fuel ratio of a mixture in each of one or more lean cylinders and one or more rich cylinders is controlled in a feedback manner based on an average value of a detected value of an air fuel ratio sensor, so that an average value of an air fuel ratio of exhaust gas flowing into the three-way catalyst becomes a predetermined target exhaust gas air fuel ratio. At this time, the air fuel ratio dither control is carried out, by setting at least a cylinder with the highest gas impingement intensity in a cylinder group of an internal combustion engine as the one or more lean cylinders.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: June 4, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuya Suzuki, Koichi Hoshi
  • Patent number: 10215121
    Abstract: A method and an apparatus for heating a lambda detector of mild hybrid electric vehicle may include determining whether a measured value of the lambda detector is equal to or greater than a first reference value or is equal to or less than a second reference value when an overrun condition is satisfied; determining a first difference value between the measured value of the lambda detector and the first reference value and a second difference value between the measured value and the second reference value when the measured value of the lambda detector is equal to or greater than the first reference value or is equal to or less than the second reference value; determining a heating temperature and time according to the first difference value and the second difference value; and heating the lambda detector according to the determined heating temperature and time when a coasting condition is satisfied.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 26, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Hwa Yong Jang
  • Patent number: 10161347
    Abstract: Methods and systems are providing for improving zero flow lubrication (ZFL) of a high pressure fuel pump coupled to direct fuel injectors via a direct injection fuel rail. A ZFL transfer function for the fuel pump is learned while fuel is at non-nominal fuel bulk modulus conditions and corrected for variations from a nominal fuel bulk modulus estimate. When zero flow lubrication of the pump is requested, the pump is operated with a duty cycle based on the learned transfer function and an instantaneous estimate of the fuel bulk modulus to compensate for differences in fuel condition from the nominal fuel bulk modulus estimate.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: December 25, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Hao Zhang, Mark Meinhart
  • Patent number: 10156194
    Abstract: Methods and systems are provided for estimating exhaust gas recirculation (EGR) flow in an engine including an EGR system. In one example, a method may include operating the EGR system in an open loop feed forward mode based on an intake carbon di oxide sensor output above a threshold engine load and/or when a manifold absolute pressure (MAP) is above a threshold pressure, and operating the EGR system in a closed loop feedback mode based on a differential pressure sensor output when the engine load decreases below the threshold load and/or when the MAP decreases below the threshold pressure.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 18, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Freeman Carter Gates, Kirk Pulay, Stephen George Russ
  • Patent number: 10113500
    Abstract: When a specified learning execute condition is established, the high-pressure pump is stopped so that the fuel pressure in the high pressure fuel passage is made equal to the fuel pressure in the low pressure fuel passage. A low pressure fuel control is executed to control a driving voltage of the low-pressure pump based on the operational characteristic of the low-pressure pump. A driving voltage of the low-pressure pump is gradually corrected so that the difference between the detected high fuel pressure and a target low fuel pressure becomes small. A driving voltage correcting amount is learned as the control error of the low pressure fuel control. The driving voltage correction amount is stored as the learning correction amount, and the driving voltage of the low-pressure pump is corrected by means of the learning correction amount.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: October 30, 2018
    Assignee: DENSO CORPORATION
    Inventor: Toshifumi Hayami