Patents Examined by Johnny H. Hoang
  • Patent number: 11002202
    Abstract: An engine system includes an air handling control unit which controls a plurality of air handling actuators responsible for maintaining flow of air and exhaust gas within the engine system. The engine system has a plurality of sensors whose sensor signals at least partially define a current state of the engine system. The air handling control unit includes a controller which controls the air handling actuators of the engine system as well as a processing unit coupled to the sensors and the controller. The processing unit includes an agent which learns a policy function that is trained to process the current state, determines a control signal to send to the controller by using the policy function after receiving the current state as an input, and outputs the control signal to the controller. Then, the agent receives a next state and a reward value from the processing unit and updates the policy function using a policy evaluation algorithm and a policy improvement algorithm based on the received reward value.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: May 11, 2021
    Assignee: Cummins Inc.
    Inventors: Kartavya Neema, Vikas Narang, Govindarajan Kothandaraman, Shashank Tamaskar
  • Patent number: 10989104
    Abstract: The invention relates to an internal combustion engine and to a method for operating the internal combustion engine, which has at least one cylinder having a combustion chamber, the combustion chamber being bounded by a cylinder roof, a cylinder wall and a movable cylinder piston, a multi-hole injection nozzle and a spark plug being arranged in a central position in the cylinder roof, the multi-hole injection nozzle injecting fuel into the combustion chamber at injection pressures of >/=300 bar by means of a plurality of injection jets.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: April 27, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Uwe Reisch, Mario Campe
  • Patent number: 10989133
    Abstract: A device that enables gasoline internal combustion engines to efficiently use fuel with higher ethanol content. The device measures various data such as ethanol content, RPM, temperature, intake air pressure, mass airflow, exhaust gas, crank sensor, among other data, to determine to an ideal enrichment pulse duration to apply to the fuel injector.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: April 27, 2021
    Assignee: StepOneTech Ltd
    Inventors: Risto Harkonen, Miika Holtta, Tuomo Isokivijarvi, Pekka Salo
  • Patent number: 10989135
    Abstract: A control device for a compression ignition engine is provided, which causes an injector to perform a pre-injection and a main injection, sets fuel injection timings of these injections so that an interval between a first peak of a heat release rate resulting from the combustion of fuel injected by the pre-injection and a second peak of the heat release rate resulting from the combustion of fuel injected by the main injection becomes an interval to make pressure waves caused by these combustions cancel each other out, and when an increase of a wall surface temperature of a combustion chamber is detected, controls the injector to reduce the injection amount and retard the injection timing of the pre-injection compared with a case where the temperature increase is not detected, under a condition that engine load and speed are the same.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: April 27, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takeru Matsuo, Yoshie Kakuda, Sangkyu Kim, Daisuke Shimo
  • Patent number: 10989134
    Abstract: A method for operating a fuel injection system for a vehicle is provided. In particular, the fuel injection system includes an injection nozzle having a nozzle body, a nozzle orifice and a nozzle needle movable in the nozzle body. The method including: measuring an actual injection timing of the injection nozzle during injection based on an electrical signal generated by the nozzle needle through an electric contact with the nozzle body so that the electrical signal identifies an open state and a closed state of the injection nozzle; calculating a deviation of the actual injection timing from a scheduled injection timing of the fuel injection system; and controlling the injection nozzle by adjusting injection parameters of the injection nozzle based on the evaluated deviation.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: April 27, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Roland Steininger, Viktor Boschmann
  • Patent number: 10982618
    Abstract: A method and a system for controlling an air-fuel ratio for a gas engine are provided. Current outlet pressure of the nozzle is calculated based on current pressure in an intake pipe and a current rotational speed, without detecting the outlet pressure of the nozzle by a sensor. A fluid state of the gas can be determined based on a ratio of the current outlet pressure to the current inlet pressure of the nozzle collected by a sensor, such that a flow rate characteristic corresponding to the fluid state can be selected to calculate power-on duration for the nozzle, so as to set the air-fuel ratio based on the power-on duration. The power-on duration can be calculated based on flow rate characteristics of the gas in respective fluid states, thereby achieving an air-fuel ratio with high accuracy.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: April 20, 2021
    Assignee: WEICHAI POWER CO., LTD.
    Inventors: Xuguang Tan, Wang Li, Zhiqiang Yin
  • Patent number: 10975717
    Abstract: A gas turbine engine includes a fan section having a fan rotatable with a fan shaft and a turbomachinery section having a turbine and a turbomachine shaft rotatable with the turbine. A power gearbox is also provided mechanically coupled to both the fan shaft and the turbomachine shaft such that the fan shaft is rotatable by the turbomachine shaft across the power gearbox. A torque monitoring system includes a gearbox sensor operable with a gear of the power gearbox and a shaft sensor operable with at least one of the turbomachine shaft or the fan shaft. The torque monitoring system determines an angular position of the gear of the gearbox relative to at least one of the fan shaft or the turbomachine shaft using the gearbox sensor and the shaft sensor to determine a torque within the gas turbine engine.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: April 13, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Thomas Ory Moniz, Joseph George Rose, Robert Harold Weisgerber, Jeffrey Donald Clements, Brandon Wayne Miller
  • Patent number: 10975793
    Abstract: An air flow measurement device that measures an air flow rate based on an output value of a sensing unit attached in an environment in which air flows, the air flow measurement device is provided. The air flow measurement device may calculate an average air amount, which is an average value of the air flow rate, from the output value. The air flow measurement device may calculate a pulsation maximum value, which is a maximum value of the air flow rate, from the output value.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: April 13, 2021
    Assignee: DENSO CORPORATION
    Inventor: Kengo Ito
  • Patent number: 10961932
    Abstract: An internal combustion engine control device includes a combustion degree of stoppage determination unit which determines whether stoppage of combustion of an internal combustion engine has reached a threshold degree, and an internal combustion engine control unit which performs a normal control in the case that the combustion of the engine is resumed in a state where stoppage of combustion has not reached the threshold degree, and performs a soot suppression control in the case that the engine combustion is resumed in a state where stoppage of combustion has reached the threshold degree. In the soot suppression control, the split injection or the single injection is carried out within the predetermined stroke, and the engine control unit causes a fuel injection timing in the single injection of the soot suppression control to be delayed with respect to the fuel injection timing in the single injection of the normal control.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: March 30, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Eiji Hashimoto, Naoki Fukuoka, Masayuki Yoshiiri, Kengo Takada, Mitsuo Hashizume
  • Patent number: 10961935
    Abstract: A drive device capable of detecting individual variations of an injection quantity of a fuel injection device of each cylinder and adjusting a current waveform provided to an injection pulse width and a solenoid such that the individual variations of the fuel injection devices are reduced. The fuel injection device in the present invention includes a valve body that close a fuel passage by coming into contact with a valve seat and opens the fuel passage by separating from the valve seat and a magnetic circuit constructed of a solenoid, a fixed core, a nozzle holder a housing and a needle and when a current is supplied to the solenoid a magnetic suction force acts on the needle and the needle has a function to open the valve body by colliding against the valve body after performing a free running operation and changes of acceleration of the needle due to collision of the needle against the valve body are detected by a current flowing through the solenoid.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 30, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Ayumu Hatanaka, Toshihiro Aono, Teppei Hirotsu, Hideyuki Sakamoto, Masahiro Toyohara, Osamu Mukaihara, Takao Fukuda, Yoshihito Yasukawa, Akiyasu Miyamoto
  • Patent number: 10954868
    Abstract: A method for operating an internal combustion engine having a camshaft phase adjuster, including: providing a nonlinear final control element model, which indicates via a functional relationship an angular velocity of a relative adjustment of the camshaft phase adjuster as a function of an actuator correcting variable for the control of the camshaft phase adjuster; carrying out a control based on a deviation between a predefined camshaft angle adjustment setpoint value, and a camshaft angle adjustment actual value, to obtain as a control output a setpoint positioning rate of the camshaft phase adjuster; calculating the actuator correcting variable as a function of the setpoint positioning rate using an inverted final control element model; applying a predefined correction variable to the actuator correcting variable; controlling the camshaft phase adjuster using the actuator correcting variable to which the correction variable has been applied, to operate the internal combustion engine.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: March 23, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Benedikt Alt, Konrad Moser, Patrick Grau
  • Patent number: 10954878
    Abstract: A vibration reduction device upon KEY-OFF of an engine may include a fuel injection device for injecting fuel stored in a fuel tank into a combustion chamber of an engine depending upon a target torque value, a measurement device for measuring the RPM and the rotational torque of the engine, and an controller for detecting whether or not an engine becomes KEY-OFF and when it is determined to be in KEY-OFF state, setting a reference torque value, and setting a torque value changing the reference torque value depending upon a predetermined reference as the target torque value and controlling the fuel injection device to finely inject fuel into the engine depending upon the target torque, thus reducing engine vibration.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: March 23, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young-Koo Kang, Su-Young Park
  • Patent number: 10947916
    Abstract: A control method of a vehicle having an exhaust gas recirculation (EGR) system includes efficiently controlling a temperature of recirculated exhaust gas and, even when the temperature of recirculated exhaust gas excessively increases, damage to hardware, such as an intake manifold or parts of the exhaust gas recirculation system can be prevented. The control method includes: detecting the temperature of exhaust gas recirculated to an engine intake system by the EGR system; entering into a protection mode so as to control the temperature of the recirculated exhaust gas; determining a correction value such that the controller controls the temperature of the recirculated exhaust gas; and correcting an engine control value by using the determined correction value and controlling an engine according to the corrected engine control value.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: March 16, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Seung Suk Yoon
  • Patent number: 10941720
    Abstract: A control device for an internal-combustion engine, includes: an ejector including an exhaust port coupled to an intake passage upstream of a compressor, an intake port coupled to a recirculation passage recirculating intake air from the intake passage downstream of the compressor to the intake passage upstream of the compressor, and a suction port coupled to a first branch passage; a first pressure acquirer obtaining a first pressure that is a pressure upstream of the compressor in the intake passage; a second pressure acquirer obtaining a second pressure that is a pressure downstream of the compressor in the intake passage; and an ejector negative pressure estimator configured to estimate an ejector negative pressure based on an opening period of the purge valve and the second pressure.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: March 9, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Rintarou Tachibana, Hirokatsu Yamamoto
  • Patent number: 10934990
    Abstract: A control device is provided for a compression ignition engine, which controls the engine so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in late compression stroke or early expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount are performed, and fuel is injected at a timing where fuel is present inside the combustion chamber before the preceding ignition. In a high-speed side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 2, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takuya Ohura, Keiji Maruyama, Toru Miyamoto, Kouji Hadama, Masataka Sumita, Takahiro Izaki, Shinji Takayama
  • Patent number: 10934960
    Abstract: A method and system for estimating air mass per cylinder of an internal combustion engine is provided. An output signal from a MAF sensor is digitally processed to provide an estimate air mass per cylinder (APC). The system includes the MAF sensor; a data acquisition unit configured to receive an output signal from the MAF sensor and produce a sampled signal having a sampling rate greater than one sample per firing event; a multiple band pass (MBP) filter configured to remove signal components caused by airflow pulsations and oscillations through the MAF sensor; an envelope detector configured to detect the lower and upper envelopes of the MBP filtered signal; a MAF estimator configured to estimate a mass airflow based on the detected lower and upper envelopes; a signal decimator; a low pass filter; and a APC converter to converted the low pass filtered signal into an estimated APC.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 2, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Zhijian J. Wu, Zhiping S. Liu, Ping Ge, Martino A. Casetti, Gregory P. Matthews
  • Patent number: 10934927
    Abstract: A pre-chamber is formed between the front end of a spark plug attached to the cylinder head and a thin pre-chamber wall sticking out from the inside wall surface of the cylinder head to the inside of a main combustion chamber. The communication holes communicating the inside of the pre-chamber and the inside of the main combustion chamber are formed inside the thin pre-chamber wall. The thin pre-chamber wall is formed into a shape with a cross-sectional area gradually decreasing from the inside wall surface of the cylinder head toward the inside of the main combustion chamber such as a conical shape, frustoconical shape, polygonal conical shape, or polygonal frustoconical shape. A ground side electrode portion of the spark plug is positioned inside the gas pocket, and a discharge is caused between the center electrode sticking out from the front end of the center electrode insulator and the ground side electrode portion at the time of ignition.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: March 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shohei Hamada, Akira Kato, Noriyuki Takada
  • Patent number: 10934978
    Abstract: A cooler for exhaust gas recirculation is arranged to absorb thermal deformation of a tube by having a modified header structure without additional parts. The cooler for exhaust gas recirculation is applied to an exhaust gas recirculation device. The cooler includes: a body disposed between a pair of flanges connected to an exhaust gas recirculation line; a tube accommodated in the body and having both ends respectively coupled to the flanges through headers such that exhaust gas flows therethrough; and cooling fins accommodated in the body to exchange heat with exhaust gas flowing through the tube, in which the headers are deformed in correspondence to deformation of the tube by expansion and contraction thereof.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: March 2, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Se Wook Jung, Hee Sool Lee
  • Patent number: 10927749
    Abstract: A control device for an engine is provided, which includes a combustion controlling module, and an ignition retard determining module configured to determine whether there is a request for an ignition retard for retarding an ignition timing of an ignition plug. When the controlling module controls the ignition plug and an injector so that the SPCCI combustion is performed and there is not the ignition retard request, the controlling module executes a control in which the entire fuel to be injected in one cycle is injected in an intake stroke and a jump-spark ignition is carried out at a basic ignition timing, and when there is the ignition retard request, the controlling module executes a control in which an injection is performed in an intake stroke, a portion of the entire fuel is injected in a compression stroke, and the ignition timing is retarded from the basic ignition timing.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: February 23, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Tatsuhiro Tokunaga, Masanari Sueoka, Keiji Maruyama, Tomohiro Nishida, Takuya Ohura, Toru Miyamoto, Junichi Taga, Hideki Omori, Kenji Tanimura, Hiroyuki Yabe
  • Patent number: 10927783
    Abstract: A method for identifying a continuously injecting combustion chamber of an internal combustion engine which has an injection system with a high-pressure accumulator for a fuel, having the following steps: time-dependent sensing of a high pressure in the injection system; starting a continuous-injection detection process at a starting time while the internal combustion engine is operating; identifying a start time of a pressure drop which occurs chronologically before the starting time and at which the high pressure in the injection system begins to drop if continuous injection has been detected; and identifying at least one combustion chamber to which the continuous injection can be assigned, on the basis of the start time of the pressure drop.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: February 23, 2021
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker