Having Microprocessor Patents (Class 123/480)
  • Patent number: 11046309
    Abstract: One embodiment is a method of operating an electronic control system (ECS) to control an engine to propel a vehicle. The method comprises receiving a throttle command, determining an operation to increase engine cycle efficiency by reducing engine torque below a magnitude corresponding to the throttle command and below a torque curve limit over a first vehicle operation segment and permitting an increase in engine torque above the torque curve limit over a second vehicle operation segment, controlling the engine to output torque below the magnitude corresponding to the throttle command and below the torque curve limit over the first vehicle operation segment, and controlling the engine to output torque above the torque curve limit over the second vehicle operation segment in response to a second received throttle command and constrained by an extended limit on operation of the engine above the torque curve limit.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 29, 2021
    Assignee: Cummins Inc.
    Inventors: Apurva Arvind Chunodkar, Kenneth M. Follen, Mugdha S. Sane, Srinivas Chakravarthy Bathula, Arun Prakash Thunga Gopal, Vivek A. Sujan
  • Patent number: 11002197
    Abstract: A control device for an internal combustion engine includes an intake air amount controller and a variable valve controller. The intake air amount controller includes an exhaust manifold pressure calculator, an engine intake air amount calculator, a volumetric efficiency correction coefficient calculator, a cylinder intake air amount calculator, an exhaust gas flow rate calculator, and a cylinder intake air amount controller. The volumetric efficiency correction coefficient calculator calculates a volumetric efficiency correction coefficient based on a pressure ratio between an intake manifold pressure and an exhaust manifold pressure, a rotational speed of the internal combustion engine, and an actuation state of at least one of an intake valve and an exhaust valve.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takuo Watanuki
  • Patent number: 10947908
    Abstract: A controller according to the present disclosure, in each combustion cycle that composes a change cycle, calculates the average ?n of control amounts from the first combustion cycle to the nth (1<=n<=N) combustion cycle and calculates the error ?n-?o of the average ?n with respect to the average ?o of a reference normal population. Also, the controller sets both a positive threshold Z?/2*?o/n1/2 and a negative threshold ?Z?/2*?o/n1/2 based on the standard error ?o/n1/2 of the reference normal population in the case where the number of data is n. Then, the controller chooses an operation amount to be changed from a plurality of operation amounts, based on a comparison between a series of the errors ?n-?o and a series of the positive thresholds Z?/2*?o/n1/2 and a comparison between the series of the errors ?n-?o and a series of the negative thresholds ?Z?/2*?o/n1/2.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 16, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeyuki Urano, Kota Sata
  • Patent number: 10876434
    Abstract: A method for generating a camshaft signature for camshaft positioning calibration for a camshaft included in a combustion engine. The camshaft is adapted to cause a valve to open and close an opening to a cylinder volume of the combustion engine. The combustion engine further includes an intake surge tank adapted for receiving air from the outside environment. The intake surge tank is in fluid connection with the cylinder volume of the combustion engine for providing air for mixing with fuel injected into the cylinder.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 29, 2020
    Assignee: Volvo Car Corporation
    Inventors: Jan Dahlgren, Stefan Dunert
  • Patent number: 10825267
    Abstract: First ECUs and second ECU of a control system of an internal combustion engine is configured to: output a predicted value of an output parameter by using a learning model if actually measured values of input parameters are input; and control an internal combustion engine based on this predicted value, the first ECUs is configured to: learn a learning model; and transmit first vehicle information including a usage environment and usage state of the first vehicle and the learned learning model linked with each other, and the second ECU is configured to receive the learned learning models, and wherein the second ECU is configured to use a learned learning model linked with the first vehicle information closest to the usage environment and usage state of the second vehicle.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: November 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Eiki Kitagawa, Daiki Yokoyama
  • Patent number: 10788346
    Abstract: A thermal type flowmeter includes a sensor and a flow-rate calculating unit. The sensor includes a heater that heats a fluid to be measured. The sensor is configured to output a sensor value corresponding to a state of thermal diffusion in the fluid heated by the heater which is being driven in such a manner that a difference between a temperature of the heater and a temperature of the fluid at a location free from thermal influence of the heater is equal to a predetermined temperature difference. The flow-rate calculating unit is configured to calculate a flow rate of the fluid from the sensor value by using a flow-rate calculation equation, “sensor value=transformation coefficient A×log (flow rate)2+transformation coefficient B×log (flow rate)+transformation coefficient C”.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: September 29, 2020
    Assignee: AZBIL CORPORATION
    Inventors: Yoshio Yamazaki, Hidenori Hibi
  • Patent number: 10784800
    Abstract: An object of the present invention is to improve reliability after the control of a microcomputer recovers. A signal control apparatus according to the present invention includes a microcomputer, an output control unit that receives a reset signal and a load control signal from the microcomputer and outputs a load output signal to a load, and when the output control unit receives the reset signal, the output control unit maintains a state of the load output signal immediately before the reset signal is received, and when the load control signal is switched, the output control unit releases the maintaining state of the load output signal.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: September 22, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Tatsuya Hatakeyama
  • Patent number: 10765429
    Abstract: Various systems and methods of controlling a surgical instrument to provide alerts according to the operational state of the instrument and the velocity of a displacement member are disclosed. The surgical instrument includes a displacement member movable between a first position and a second position and a sensor configured to detect a position of the displacement member and provide a signal indicative thereof. The surgical instrument is configured to determine a velocity of the displacement member and, upon the velocity being equal to zero, provide an alert according to the operational state of the instrument and the relative position of the displacement member in its stroke. The alert can include an image that is displayed on the display of the instrument.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 8, 2020
    Assignee: Ethicon LLC
    Inventors: Richard L. Leimbach, Raymond E. Parfett, Gregory J. Bakos
  • Patent number: 10746143
    Abstract: Examples are provided for switching an engine fuel supply. One example system includes a direct-injection engine including a cylinder, an LPG tank for storing a LPG fuel, a CNG tank for storing a CNG fuel, a gas switching valve, a high-pressure pump connected between the LPG tank and the gas switching valve, a pressure-limiting valve connected between the CNG tank and the gas switching valve, a fuel distributor configured to be supplied with one or more of the LPG fuel and the CNG fuel via the gas switching valve, an LPG injection valve coupled to the cylinder, a CNG injection valve coupled to the cylinder, the LPG injection valve and the CNG injection valve configured to be supplied with fuel via the fuel distributor; and a controller configured to control the gas switching valve depending on an aggregate state of the fuel disposed in the fuel distributor.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: August 18, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Georg Louven, Klemens Grieser, Oliver Berkemeier, Martin Wirth, Ulrich Kramer, Helmut Hans Ruhland
  • Patent number: 10658139
    Abstract: An input device includes a first part and a second part configured to move relative to each other according to an input operation, a magnetic viscous fluid whose viscosity changes according to a magnetic field, and a magnetic-field generator that generates the magnetic field applied to the magnetic viscous fluid. The second part includes a first surface and a second surface that are arranged in a direction orthogonal to a direction of relative movement between the first part and the second part. Gaps are formed between the first surface and the first part and between the second surface and the first part, and the magnetic viscous fluid is present in at least a part of the gaps.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: May 19, 2020
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Hiroshi Wakuda, Kazunari Takahashi, Atsushi Goto, Ryuichiro Yasuhara
  • Patent number: 10634079
    Abstract: A method for improving engine start performance of a vehicle performing engine synchronization at the time of the engine start may include performing a first synchronization task from an engine stop position stored when the engine stops in immediately previous traveling, and performing the first synchronization task when a crank signal of a crank sensor is first input to an engine position management (EPM) module.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: April 28, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jung-Suk Han, Kyong-Duck Park, Min-Kyu Han, Hyeok-Jun Kwon
  • Patent number: 10590875
    Abstract: Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a first set of exhaust valves coupled to the first exhaust manifold may be operated at a different timing than a second set of exhaust valves coupled to the second exhaust manifold. Further, a position of a first valve positioned in a first passage coupled between the intake passage and the first exhaust manifold and/or a timing of the first set of exhaust valves may be diagnosed based on an output of a pressure sensor positioned in the first exhaust manifold.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: March 17, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Brad Alan Boyer, Daniel Paul Madison, Julian Barnaby Corona
  • Patent number: 10544745
    Abstract: A utility engine air-to-fuel ratio control method in which during an initial or early part of a period of engine continuous operation its stability of operation is determined and if sufficiently stable a test of the air-to-fuel ratio of the air-fuel mixture supplied to the engine is performed and if need be changed to a new air-to-fuel ratio supplied to the engine during the remainder of the period of engine continuous operation. If the engine operation is not sufficiently stable the test is not started or if started is aborted.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: January 28, 2020
    Assignee: Walbro LLC
    Inventors: Martin N. Andersson, Dale P. Kus
  • Patent number: 10495015
    Abstract: A diagnostic device incorporates a processor and a memory and diagnoses a failure related to a fuel injection system for an engine whose air-fuel ratio of is feedback-controlled. The diagnostic device includes a calculation unit which calculates a corrected value of a fuel injection amount according to a difference between a target value and a measured value of the air-fuel ratio. The diagnostic device includes a setting unit which sets a mask period in which a failure diagnosis is suspended, according to the corrected value upon switchover of a fuel injection mode. The diagnostic device includes a diagnostic unit which does not carry out the diagnosis in the mask period and carries out the diagnosis outside the mask period.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: December 3, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Junya Kitada, Hideo Matsunaga, Satoshi Maeda
  • Patent number: 10473053
    Abstract: An internal combustion engine has a fuel injector that is controlled by an engine control unit. According to one embodiment a device receives from a temperature sensor information corresponding to the temperature of the engine. The device transmits substitute temperature information to the engine control unit when the temperature of the engine is within a predetermined range of temperatures. The substitute temperature information corresponds to a temperature that is different than the actual temperature of the ICE. The engine control unit controls the fuel injector so that it operates in response to the substitute temperature information.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: November 12, 2019
    Assignee: Enviro Fuel Technology, LP
    Inventor: Leon Trudeau
  • Patent number: 10465622
    Abstract: A basic opening (A0) of an EGR control valve (22) is set, based on a current engine operation state. A differential pressure (?P1) across the EGR control valve (22) is calculated, based on an actual exhaust system temperature (T1) sensed by an exhaust temperature sensor (33). A reference differential pressure (?P0) is calculated, which is a differential pressure across the EGR control valve (22) in a steady state corresponding to the current engine operation state. A reference pulsation amplitude (D) is calculated, which is an amplitude of pulsation of the reference differential pressure (?P0). The basic opening (A0) is corrected, based on the differential pressure (?P1), the reference differential pressure (?P0), and the reference pulsation amplitude (D).
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: November 5, 2019
    Assignees: NISSAN MOTOR CO., LTD., RENAULT S.A.S.
    Inventors: Kengo Yonekura, Hirofumi Tsuchida, Takayuki Hamamoto
  • Patent number: 10436139
    Abstract: An alarm system is used for a vehicle including a fuel pump and an engine. The alarm system includes a measuring device, a computing device and a warning device. The measuring device is used to read a current rotation speed of the engine and respectively measures a plurality of running times of a plurality of rotation speed values of the current rotation speed. The computing device calculates a plurality of consuming times of the fuel pump corresponding to the rotation speed values according to the running times of the rotation speed values, respectively. When an accumulating consuming time accumulated by the consuming times reaches a default critical value, the warning device generates a warning message.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: October 8, 2019
    Assignee: INSTITUTE FOR INFORMATION INDUSTRY
    Inventors: Shi-Huang Chen, Jui-Yang Tsai, Wen-Kai Liu
  • Patent number: 10428714
    Abstract: According to one aspect of the present invention, there is provided a control device for an internal combustion engine, in which an electric heating catalyst (EHC) having a catalyst support generating heat by energizing is provided to an exhaust passage. The control device includes a control unit configured to energize the support in the case where a rapid change in intake air flow is detected based on an intake air flow of the internal combustion engine or a correlation value of the intake air flow, so as to suppress any occurrence of a crack caused by an increase in difference in temperature between predetermined portions at the support during the rapid change in intake air flow.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 1, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keisuke Nagasaka, Hiroshi Tanaka, Kazuki Tsurumi
  • Patent number: 10344699
    Abstract: A microcomputer is configured to: calculate, the drive period of a previous injection, an injection interval, and an uncorrected target drive period for a current injection; obtain a correction period by increasing an internal variable from zero in proportion to the drive period of the previous injection during this drive period, attenuating the internal variable at a first-order delay during the injection interval, dividing the internal variable by a coefficient of the proportion at a start time point of the present current supply, and setting a result of the division as the correction period; and set a period obtained by subtracting the correction period from the uncorrected target drive period as a current drive period, to thereby supply a signal indicating the current drive period to the injector via a driver.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: July 9, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toru Tanaka, Tomokazu Makino, Hiroyuki Fukuyama, Takeji Yoshida
  • Patent number: 10344695
    Abstract: An internal combustion engine operatively coupled with a variable load and an electronic control system operatively coupled with the internal combustion engine. The electronic control system is structured to receive an engine speed target value, a first engine speed feedback value, and a second engine speed feedback value. The electronic control system processes the first engine speed feedback value and the second engine speed feedback value to determine a feedforward correction value. The feedforward correction value is determined to correct for first variation between the second engine speed feedback value and the first engine speed feedback value due to variation in the variable load and to distinguish between the first variation and a second variation due to operation of the internal combustion engine.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: July 9, 2019
    Assignee: Cummins Inc.
    Inventors: Randal L. Bergstedt, Rohit Saha, Martin T. Books, Richard G. Varo, Jagdeep I. Singh, Bibhu Batchal Mahanta
  • Patent number: 10323583
    Abstract: Embodiments for determining oxygen concentration using an oxygen sensor are provided. In one example, a method for determining oxygen concentration O2 in a gas flow of an internal combustion engine which is equipped with an engine controller and an oxygen sensor comprises determining the oxygen concentration O2,sens of the gas flow in a ceramic measurement cell of the sensor by current ISens which is detected by measurement and which flows when a constant voltage USens is applied and maintained, and correcting the oxygen concentration based on a pressure pSens at the measurement cell. In this way, the measured oxygen concentration may be corrected based on the pressure of the air at the sensor.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: June 18, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Christian Winge Vigild, Daniel Roettger, Andreas Kuske
  • Patent number: 10323596
    Abstract: An oil dilution rate calculation system of an internal combustion engine acquires a blowby gas flow ratio showing the ratio of the flow of blowby gas to the flow of gas to the combustion chamber and an output current of the air-fuel ratio sensor during fuel cut control in which the internal combustion engine stops the feed of fuel to the combustion chamber and at a plurality of points of time of different flows of blowby gas passing through the blowby gas passage and flowing to the downstream side of the throttle valve in the intake passage, and calculate an oil dilution rate based on the acquired blowby gas flow ratio and output current.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: June 18, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Miyamoto, Toru Kidokoro, Yasushi Iwazaki, Kenji Suzuki
  • Patent number: 10275366
    Abstract: Systems and methods that facilitate protecting vehicle impact event data from overwrite include an electronic control unit (ECU) having a processor that records event data related to vehicle operation, a memory that stores the event data, and an electronic tool that communicates with the ECU and comprises a data locking module that sends a data lock signal to the ECU to lock the stored event data as locked data such that the stored event data cannot be overwritten. The ECU, in response to the data lock signal, stores the event data as locked data in a dedicated portion of the memory to preserve the event data for subsequent review.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: April 30, 2019
    Assignee: BENDIX COMMERCIAL VEHICLE SYSTEMS LLC
    Inventors: Ananda Pandy, Mark A. Bennett, Brendan J. Chan
  • Patent number: 10260449
    Abstract: A controller for an internal combustion engine includes a processing circuit configured to execute a calculating process that calculates a returned air amount and an operating process that operates a fuel injection valve so that an air-fuel ratio of a mixture that is burned in a combustion chamber is controlled to a target value. The operating process includes under a condition in which the returned air amount is increased, having the fuel injection valve inject fuel increased in amount from a constant fuel amount, which is an amount of fuel injected when the returned air amount is unchanged, and under a condition in which the returned air amount is decreased, having the fuel injection valve inject fuel decreased in amount from the constant fuel amount.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masanori Toya, Kazuya Oshima, Yoshikazu Yamamoto
  • Patent number: 10247120
    Abstract: When executing a Local-learning, an air-fuel ratio detecting time is corrected so that a dispersion of detection values of an air-fuel ratio sensor becomes a maximum value in one cycle of an engine. While executing a cylinder-by-cylinder air-fuel ratio control, a Global-learning is executed. In the Global-learning, the air-fuel ratio detecting time is corrected based on a relationship between a variation in estimated air fuel ratio of each cylinder and a variation in fuel quantity correction value of each cylinder. In the Global-learning, a computer computes a correlation coefficient between the variation in estimated air-fuel ratio and the variation in fuel quantity correction value of the cylinder for each case where the cylinder assumed to correspond to the estimated air fuel ratio is hypothetically varied in multiple ways. Then, the air-fuel ratio detecting time is corrected so that this correlation coefficient becomes a maximum value.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 2, 2019
    Assignee: DENSO CORPORATION
    Inventors: Yasuhiro Kawakatsu, Noriaki Iwase
  • Patent number: 10227943
    Abstract: In voltage boosting circuit for performing rapid power supply to a plurality of electromagnetic coils that drive fuel-injection electromagnetic valves, an overcurrent from vehicle battery is suppressed, and continuous noise is prevented from being produced.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: March 12, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Eitaro Fukuzumi, Mitsunori Nishida
  • Patent number: 10221796
    Abstract: An engine device including an intake manifold (67) configured to supply air into a cylinder (36), a gas injector (98) configured to mix fuel gas with air supplied from the intake manifold (67), and supply mixed gas to the cylinder (36), and an igniter (79) configured to ignite, in the cylinder (36) premixed fuel obtained by pre-mixing the fuel gas with the air, the engine device further including a controlling unit (73) configured to determine an air amount in the premixed fuel in the cylinder (36). The controlling unit (73) performs in multiple steps retard control of ignition timing by the igniter (79), when the air amount is insufficient, and performs in multiple steps advance control of the ignition timing, when the air amount is sufficient.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: March 5, 2019
    Assignee: Yanmar Co., Ltd.
    Inventors: Ryoichi Hagiwara, Osamu Yamagishi, Naoya Ikeda
  • Patent number: 10190677
    Abstract: A system of determining starting tendency of a driver may include: a vehicle speed sensor detecting a vehicle speed an accelerator pedal position sensor detecting an accelerator pedal position, and a controller receiving information on input variables including the accelerator pedal position, the vehicle speed from the accelerator pedal position sensor or the vehicle speed sensor, determining a short term driving tendency, a long term driving tendency, and a starting tendency of the driver based on the information, and controlling an engine or a transmission according to the short term driving tendency, the long term driving tendency, and the starting tendency, in which the controller continuously determines the short term driving tendency of the driver for a predetermined time and determines the starting tendency of the driver from a predetermined number (n) of the short term driving tendencies of the driver.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: January 29, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Donghoon Jeong, Byeongwook Jeon
  • Patent number: 10184414
    Abstract: A method for analyzing a fuel injection system includes generating injection commands, including attenuating a predetermined fuel request schedule for a different one of the plurality of injectors in a plurality of test cycles. Fuel is injected according to the injection commands to complete the plurality of test cycles. The processor generates pump commands for the pump to maintain a substantially constant pressure of the common rail during the test cycles. First command data are stored for the plurality of test cycles corresponding to the injection commands sent during the test cycles. Second command data are stored for the test cycles corresponding to the pump commands sent during the test cycles. The processor processes the first command data and the second command data to determine flow characteristics of the plurality of fuel injectors.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: January 22, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Francesco Laviola
  • Patent number: 10125703
    Abstract: Based on an internal EGR ratio and desired external and internal EGR ratios, an EGR valve opening degree is feedback-controlled based on a desired EGR ratio, calculated in such a way as to perform correction so that a total EGR ratio becomes constant, and an EGR effective opening area obtained through learning of the relationship between an EGR valve opening degree and an effective opening area; thus, a correct characteristic of EGR valve opening degree vs. effective opening area can be maintained and hence it is made possible to absorb variations, changes with time, and even environmental conditions, while making an EGR valve and an intake/exhaust VVT collaborate with each other; therefore, an EGR flow rate can accurately be estimated.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: November 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takuo Watanuki, Hideki Hagari, Tomokazu Makino
  • Patent number: 10113930
    Abstract: A method (45) for determining the total pressure in a cylinder (Pcyl) of an engine as a function of the angular position (crk) of a crankshaft (14) and from a quantity of fuel to be injected in possibly several injections, includes: determining the pressure in the cylinder when there is no combustion, the pressure being called the pressure without combustion (Pcyl_m), determining, for each injection (inji), a curve of sub-variation of pressure (?Pcomb_i) caused by the combustion of the fuel quantity injected during the such injection (inji), the shape of the curve being estimated as a function of the quantity of fuel to be injected (MFi) and of the angular position for start of injection (SOIi) of the corresponding injection, determining the total pressure in the cylinder (Pcyl) by adding together the pressure without combustion (Pcyl_m) and the pressures given by the pressure sub-variation curves (?Pcomb_i) of each injection (inji).
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: October 30, 2018
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Bertrand Varoquie, Christophe Bouquey
  • Patent number: 10094301
    Abstract: A controller is applied to such an internal combustion engine that an exhaust throttle valve for controlling the flow volume of exhaust gas of the exhaust passage is provided in the exhaust passage, an intake variable valve mechanism for changing the timing of opening and closing each intake valve or an exhaust variable valve mechanism for changing the timing of opening and closing each exhaust valve is provided, and an overlap period when an opening period of the intake valve and an opening period of the exhaust valve overlap with each other can be provided, and controls the exhaust throttle valve so that an opening degree of the exhaust throttle valve in the overlap period is made smaller than an opening degree of the exhaust throttle valve in a case where the overlap period is not provided.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: October 9, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tetsuo Omura
  • Patent number: 10087871
    Abstract: An add-on fuel injector control system and method for modifying a fuel injector pulse width for an electronically-controlled internal combustion engine is provided, which intercepts a pulse from an engine control unit (ECU) to a fuel injector, determines the optimal operational band, and either sends a modified or unmodified control signal pulse width to the fuel injector, depending on the band determination. The pulse width is increased by a total fuel adder. If the ECU control signal is determined to be in the auto-tune band, the controller modifies the output pulse width based on a comparison of current and previous values correlated to the rate of change of acceleration and whether the previous total fuel adder included an addition or subtraction of an auto-tune adder.
    Type: Grant
    Filed: December 25, 2016
    Date of Patent: October 2, 2018
    Inventors: Richard W. Botting, David James Bucciarelli
  • Patent number: 10036305
    Abstract: A method of cooling a compressor, providing compressed working fluid, in a natural gas based combustion engine is provided. The method includes diverting at least a portion of natural gas from a fuel tank of the combustion engine. The method further includes routing the portion of natural gas towards the compressor. The method also includes providing one or more nozzles disposed at one or more strategic locations of the compressor. The method further includes injecting the portion of natural gas, via the one or more nozzles, inside the compressor. The method also includes allowing the portion of natural gas to diffuse with the compressed working fluid inside the compressor in an endothermic expansion process, to convectively cool the compressor.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: July 31, 2018
    Assignee: Caterpillar Inc.
    Inventors: Nan Yang, Robert C. Griffith, Arnold M. Kim
  • Patent number: 9926856
    Abstract: Methods and apparatus relate to air handling for an internal combustion engine system, particularly utilizing premixed air and fuel. The engine system includes an intake air throttle (IAT) having a position set in response to the engine speed and a variable valve timing module having an intake valve timing set in response to the engine load. The variable valve timing module may be a cam phaser having a position at or between full retard and full advance positions. The engine system may operate in a transient mode or a fuel efficiency mode. The IAT position is adjusted in response to an engine speed error value or set at full throttle. The cam phaser position is adjusted in response to a pressure difference across the IAT, the engine speed, or is set to a limit position.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: March 27, 2018
    Assignee: Cummins Inc.
    Inventors: Jing Wang, Richard A. Booth, Phanindra Garimella
  • Patent number: 9926869
    Abstract: A method for adapting a transition compensation based on a lambda value change for operating an engine, which includes a combustion chamber having a first inlet opening connected to a first intake pipe having a first injector. The chamber includes a second inlet opening connected to a second intake pipe having a second injector. During normal operation, a predetermined fuel quantity is injected, and this quantity includes a first and second fuel quantities to be injected respectively via the first and second openings. In a first step, the first injector remains closed, and in a second step, the first injector is opened again. In the second step, a first test fuel quantity is injected into the combustion chamber via the first opening and a second test fuel quantity is injected via the second opening, the first and second test fuel quantities making up the predetermined fuel quantity.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: March 27, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Marko Lorenz, Andreas Posselt, Andrea Krusch, Andreas Gutscher, Haris Hamedovic
  • Patent number: 9920701
    Abstract: It is determined whether the execution conditions for the injection quantity variation correction are met, based on whether all of following conditions are satisfied: the engine operation is the stationary operation, the injection quantity of a fuel injection valve falls within the predetermined range, and the fuel pressure falls within the predetermined range. When the execution conditions are met, the fuel pressure decrease caused by the fuel injection of the fuel injection valve for each cylinder is calculated based on the output of a fuel pressure sensor, and the injection quantity variation correction to correct the injection quantity variation of the fuel injection valve for each cylinder is performed based on the fuel pressure decrease caused by the fuel injection of each cylinder. Thus, the fuel pressure decrease can be accurately calculated, the injection quantity variation of each cylinder is precisely corrected.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: March 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Fukuda, Akihiro Okamoto, Ryohei Takahashi
  • Patent number: 9920705
    Abstract: A combination port fuel injection (PFI) and direct injection (DI) dual path fuel injection system includes an electronic control unit (ECU) that switches between the PFI portion and the DI portion depending on the engine operating point and fuel flow requirements. During transitions in engine loading, the ECU instructs the PFI portion to increase injection for a limited amount of time, while instructing the DI portion to maintain a current injection. Subsequently, fueling is transitioned from the PFI portion back to the DI portion. Advantageously, the combination PFI and DI dual path fuel injection system mitigates the emission of particles during transient engine operating conditions.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: March 20, 2018
    Assignees: Robert Bosch, LLC, Robert Bosch GmbH
    Inventor: Michael Mosburger
  • Patent number: 9903297
    Abstract: The internal combustion engine comprises an exhaust purification catalyst able to store oxygen, and a downstream side air-fuel ratio sensor arranged at a downstream side of the exhaust purification catalyst in a direction of exhaust flow. The control system performs feedback control of an amount of fuel fed to a combustion chamber of the internal combustion engine so that an air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst becomes a target air-fuel ratio and performs learning control to correct a parameter relating to the feedback control based on an air-fuel ratio of exhaust gas detected by the downstream side air-fuel ratio sensor. The target air-fuel ratio is alternately switched between a rich set air-fuel ratio and a lean set air-fuel ratio leaner. When a condition for learning acceleration, which is satisfied when it is necessary to accelerate correction of the parameter by the learning control, is satisfied, a rich degree of the rich set air-fuel ratio is increased.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuntaro Okazaki, Norihisa Nakagawa, Yuji Yamaguchi, Kenji Suzuki, Hiroshi Miyamoto, Yasushi Iwazaki
  • Patent number: 9897027
    Abstract: Methods and systems are provided for estimating an impact of PCV hydrocarbons on an output of an intake oxygen sensor. In one example, a method may include disabling EGR flow when the impact of PCV hydrocarbons on the output of the intake oxygen sensor is above a threshold. The impact of the PCV hydrocarbons on the output of the intake oxygen sensor may be based on a difference between the output of the intake oxygen sensor and a DPOV sensor when EGR is flow and a difference between the output of the intake oxygen sensor and expected blow-by when EGR is not flowing.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: February 20, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, James Alfred Hilditch, Stephen B. Smith, Michael Howard Shelby, Todd Anthony Rumpsa, Mohannad Hakeem
  • Patent number: 9897034
    Abstract: Provided is a control device of an engine that can certainly suppress and avoid pre-ignition. A control device of an engine is an engine control device for controlling the behavior of fuel that is directly injected into a combustion chamber of a cylinder by a tumble flow, and it has an injector that directly injects the fuel into the combustion chamber, an intake port that generates the tumble flow in the combustion chamber, and an ECU that injects the fuel from the injector at a plurality of injection timings including an intake-stroke-early-half injection timing that is set at an early half of the intake stroke of the cylinder, when an operating state of the engine is in a high-load, low-rotation range.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: February 20, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Tsugawa, Hiroki Morimoto, Nobuhiko Yokoyama, Shouichi Aiga, Yoshitomo Matsuo, Tomoaki Fujiyama, Yoshitaka Wada
  • Patent number: 9890748
    Abstract: Provided is a method for calculating an oxygen concentration in a combustion chamber, including: calculating volume efficiency of the combustion chamber while a variable valve lift is in an on state and the volume efficiency of the combustion chamber and the volume of internal EGR from the volume of the combustion chamber while the variable valve lift is in an off state; and calculating a mass of the internal EGR from the pressure of an exhaust manifold, the temperature of the exhaust manifold, and the volume of the internal EGR.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 13, 2018
    Assignee: Hyundai Motor Company
    Inventors: JangSu Lee, Seungcheol Han
  • Patent number: 9845760
    Abstract: Methods and systems are provided for accurately estimating intake aircharge based on the output of an intake oxygen sensor while flowing EGR, purge, or PCV hydrocarbons to the engine. The unadjusted aircharge estimate is used for engine fuel control while the hydrocarbon adjusted aircharge estimate is used for engine torque control. A controller is configured to sample the oxygen sensor at even increments in a time domain, stamp the sampled data in a crank angle domain, store the sampled data in a buffer, and then select one or more data samples corresponding to a last firing period from the buffer for estimating the intake aircharge.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: December 19, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Justin Trzeciak, Joseph Norman Ulrey, Gopichandra Surnilla
  • Patent number: 9790873
    Abstract: An air-fuel ratio control controls an air-fuel ratio (air-fuel ratio of an engine) of a mixture supplied to the engine, based on an output value of the downstream-side air-fuel ratio sensor disposed downstream of a catalyst. That is, the air-fuel ratio control apparatus sets the air-fuel ratio of the engine at a rich air-fuel ratio when the output Voxs is smaller than a reference value VREF (when a rich request is occurring). The air-fuel ratio control apparatus sets the air-fuel ratio of the engine at a lean air-fuel ratio when the output Voxs is larger than a reference value VREF (when a lean request is occurring). The air-fuel ratio control apparatus makes the target value VREF gradually come closer to a reference value VF (stoichiometric air-fuel ratio corresponding value) from a certain value, when the output value Voxs deviates greatly from the reference value Vf (points P1-P3).
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 17, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Makoto Tomimatsu, Ryota Onoe, Takahiko Fujiwara
  • Patent number: 9719481
    Abstract: The invention, while reducing noise, suppresses a load increase in a processor and a delay in drive control. An engine control unit includes a processor, a driving circuit including a switching element to drive a load such as a fuel injector and an ignition device, and a communication circuit that transmits control signals from the processor to the driving circuit via serial communication. The control signals each include a command frame for controlling the driving circuit and a data frame for driving the load. If a predetermined bits in each of the data frames received from the processor at predetermined time intervals are determined to be the same twice in succession, the engine control unit changes a state of a driving signal ‘Drive’ for driving the load and thereby changes an operating state of the switching element.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: August 1, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Katsuya Oyama, Chihiro Sato, Mitsuhiko Watanabe
  • Patent number: 9708965
    Abstract: Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: July 18, 2017
    Assignee: Massachusetts Institute of Technology
    Inventors: Leslie Bromberg, Daniel R. Cohn, John B. Heywood
  • Patent number: 9702308
    Abstract: A diesel engine, includes: an exhaust gas recirculation device that recirculates an exhaust gas emitted from the diesel engine to an intake side of the diesel engine; an intake air amount sensor that measures an intake air amount of the diesel engine; a NOx measurement sensor that measures NOx contained in the exhaust gas emitted from the diesel engine; and a control device that obtains a correction value for correcting a measured value by the intake air amount sensor based on a difference between first information on NOx obtained based on information on a rotation speed of the diesel engine and information on a load and second information on NOx measured by the NOx measurement sensor to control the exhaust gas recirculation device based on the measured value by the intake air amount sensor corrected using the correction value.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 11, 2017
    Assignee: Komatsu Ltd.
    Inventors: Mitsuru Nakashima, Tadashi Iijima, Kaoru Sakurai, Kouichi Okaya, Takashi Sakasai
  • Patent number: 9644563
    Abstract: An engine control unit of a power system is provided with a memory module which stores a fuel consumption data. An electric power ECU of a power supply system controls an operation mode of a generator based on a fuel consumption associated data transmitted from an engine control unit. An air-condition ECU of a heat system controls an operation mode of a compressor based on the fuel consumption associated data transmitted from the engine control unit. By updating the fuel consumption data stored in the engine control unit, control characteristics of the power supply system and the heat system can be varied. The fuel consumption associated data is transmitted to the ECU in preference to the other data. Moreover, the fuel consumption associated data is transmitted in a period which the electric power ECU and the air-condition ECU require.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: May 9, 2017
    Assignee: DENSO CORPORATION
    Inventor: Kazuya Okamoto
  • Patent number: 9644543
    Abstract: An engine assembly includes an intake manifold and a manifold absolute pressure sensor configured to generate a current measured manifold absolute pressure (MAPM) signal for the intake manifold. The assembly includes a throttle valve adjustable to control airflow to the intake manifold and a throttle position sensor configured to generate a current measured throttle position (TPM) signal. A controller is operatively connected to the throttle valve and the manifold absolute pressure sensor and has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a predicted manifold absolute pressure (MAPP). Execution of the instructions by the processor causes the controller to determine the predicted manifold absolute pressure (MAPP) based at least partially on a predicted throttle flow (TFP) and the current measured manifold absolute pressure (MAPM) signal.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: May 9, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Yiran Hu, Ibrahim Haskara, Shifang Li, Sai S. V. Rajagopalan, Steven E Muldoon, Chen-Fang Chang
  • Patent number: 9638117
    Abstract: A method is provided for operating a vehicular engine that comprises a plurality of pistons and a plurality of cylinders. The method comprises detecting an engine temperature and detecting an alcohol concentration of fuel. The method further comprises selecting an amount of fuel according to the engine temperature and the alcohol concentration and selectively dispensing the amount of fuel to the cylinders.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 2, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Stanley D. Lent, Joshua D. VanLandingham