Patents Examined by Johnny H. Hoang
  • Patent number: 11326545
    Abstract: An injection control device includes: a fuel injection quantity command value output unit that outputs a command value for a fuel injection quantity of a fuel injection valve; a fuel injection quantity correction unit that calculates an air-fuel correction amount and corrects the command value for the fuel injection quantity; and a controller that executes current control on the fuel injection valve. The controller executes current area correction by calculating an area correction amount for an energization time. The injection control device further includes a learning controller that stops the air-fuel learning.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: May 10, 2022
    Assignee: DENSO CORPORATION
    Inventors: Kosuke Kato, Yasumasa Ishikawa, Yohei Suganuma
  • Patent number: 11326566
    Abstract: An engine including a fuel tank, a carburetor, a speed control lever, and a transport valve. The carburetor includes a throttle valve movable between a first throttle position and a second throttle position. The speed control lever is coupled to the throttle valve and is movable between a first position corresponding to the first throttle position and a second position corresponding to the second throttle position. The transport valve is fluidly coupled between the fuel tank and the carburetor, and includes a valve element moveable between an open valve position allowing fuel flow between the fuel tank and the carburetor, and a closed valve position preventing fuel flow between the fuel tank and the carburetor. Movement of the speed control lever to the second position moves the valve element to the closed valve position to stop fluid flow between the fuel tank and the carburetor.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 10, 2022
    Assignee: Briggs & Stratton, LLC
    Inventor: David Roth
  • Patent number: 11326534
    Abstract: Using machine learning for cylinder misfire detection in a dynamic firing level modulation controlled internal combustion engine is described. In a classification embodiment, cylinder misfires are differentiated from intentional skips based on a measured exhaust manifold pressure. In a regressive model embodiment, the measured exhaust manifold pressure is compared to a predicted exhaust manifold pressure generated by neural network in response to one or more inputs indicative of the operation of the vehicle. Based on the comparison, a prediction is made if a misfire has occurred or not. In yet other alternative embodiment, angular crank acceleration is used as well for misfire detection.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: May 10, 2022
    Assignee: Tula Technology, Inc.
    Inventors: Shikui Kevin Chen, Aditya Mandal, Li-Chun Chien, Elliott Ortiz-Soto
  • Patent number: 11319910
    Abstract: A fuel injector interface device and associated method include an interface device having a plurality of input leads and a plurality of output leads. The input leads are communicatively linked to the fuel pressure sensor on the common rail of a vehicle fuel injection system. The output leads are communicatively linked to a display device such as a diagnostic scope. Circuitry positioned within the interface device detects the rail pressure signals, filters the signals, and outputs data to the display device representing a graphical depiction of the same. A method of using the interface device includes generating the signals, mapping the signals to an individual fuel injector of the vehicle's engine cylinder and determining fluctuations in the strength of the displayed signals to determine anomalies in a particular fuel injector.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: May 3, 2022
    Inventor: Randal S. Nichols
  • Patent number: 11319889
    Abstract: The abnormality diagnosis system 1 of a downstream side air-fuel ratio detection device 41, 42, comprises an air-fuel ratio control part 71 controlling an air-fuel ratio of an air-fuel mixture, an abnormality judgment part 72 judging abnormality of the downstream side air-fuel ratio detection device based on a characteristic of change of output of the downstream side air-fuel ratio detection device when the air-fuel ratio control part makes the air-fuel ratio of the air-fuel mixture change, and an oxygen change calculation part 73 calculating an amount of change of an oxygen storage amount of the catalyst when the air-fuel ratio control part makes the air-fuel ratio of the air-fuel mixture change. The abnormality judgment part does not judge abnormality of the downstream side air-fuel ratio detection device when the amount of change of the oxygen storage amount is less than a lower limit threshold value.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: May 3, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki Kitazume, Kazuhiro Wakao, Keiichiro Aoki, Yasutaka Kamiya
  • Patent number: 11313315
    Abstract: An internal combustion engine control apparatus including a microprocessor. The microprocessor is configured to perform controlling a fuel injector so as to inject a fuel of a target injection amount by dividing into a plurality of times at a predetermined time interval in an 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 the predetermined time interval. The microprocessor is configured to perform the setting including setting the predetermined time interval so that a spray length from a tip of the fuel injector to a tip of a spray of the fuel injected from the fuel injector becomes shorter than the spray length when the fuel of the target injection amount is injected at once in the area by a predetermined rate.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: April 26, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Ryuichi Hata, Hidekazu Hironobu, Daiki Yamazaki, Masatoshi Nakajima, Takaya Kawana
  • Patent number: 11313297
    Abstract: A synchronous dynamometer assembly for applying a load to an engine during at least one portion of the combustion cycle of the engine in a synchronised manner so as to be repeatable each cycle of the engine comprises a dynamometer having a non-inductive load which is applied to the engine during operation to vary the speed of the engine. The non-inductive load is variable by varying the current delivered to it. Crankshaft monitoring means monitors the rotational position of the engine crankshaft, and combustion detection means detects a combustion event in a cylinder of the engine. Control means is operatively connected to the dynamometer for applying the load from the dynamometer to the engine for at least one part of the combustion cycle in real time such that the different loads may be applied to the engine for different parts of the combustion cycle.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 26, 2022
    Inventor: Peter Martin
  • Patent number: 11315368
    Abstract: Methods and systems are provided for restarting an engine following an engine idle-stop. In one example, a method may include, following a first unsuccessful engine restart attempt, prompting a driver, via a human machine interface (HMI) to apply a brake pedal and upon application of the brake pedal, carrying out one or more restart attempts. If the driver does not apply the brake pedal within the threshold duration, the driver may be prompted to manually restart the engine.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 26, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Hafiz Shafeek Khafagy, Eric Michael Rademacher, Ahmed Awadi, Daniel Yeaw, Paul Joseph Szuszman, Richard John Hippley
  • Patent number: 11313270
    Abstract: The present invention uses an improved engineered metal seal with or without an internal energized spring that is disposed in a pre-combustion chamber apparatus assembly to improve sealing over the flat washer seals that are currently used. The seals of the present invention comprise at least three different geometrical configurations of seals that are manufactured from titanium, Inconel, and/or hastelloy. The design of the tip and body of the pre-combustion chamber provide for movement of the seal without leaking. The sealing is provided on the axial surfaces of the tip and the body instead of the face of the tip and body by a flat washer seal, as is currently done.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: April 26, 2022
    Inventor: Tracy Northington
  • Patent number: 11306669
    Abstract: A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. The control can include controlling pilot fuel quantity supplied to an engine based on a pilot fuel offset value; and controlling air-to-fuel ratio (AFR) for the engine based on an AFR control trim value. A NOx error value can be used to generate one of the pilot fuel offset value or the AFR control trim value, and an exhaust temperature error value can be used to generate the other of the pilot fuel offset value or the AFR control trim value.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: April 19, 2022
    Assignee: Caterpillar Inc.
    Inventors: Christopher F. Gallmeyer, Geetika Dilawari, Shawn M. Damm, Shivangi Wagle, Hannes Marscheider
  • Patent number: 11306677
    Abstract: A fuel injection control apparatus including a microprocessor. The microprocessor is configured to perform calculating injection target values per a combustion cycle, controlling a fuel injector so as to inject fuel in accordance with the injection target values, instructing a switching between a first mode injecting the fuel and a second mode stopping the fuel injection, determining whether it is possible to inject the fuel in accordance with the injection target values when the switching from the second mode to the first mode is instructed, and modifying the injection target values by reducing a target injection frequency when it is determined to be impossible to inject the fuel in accordance with the injection target values, and the controlling including controlling the fuel injector, when the injection target values are modified, so as to inject the fuel in accordance with modified injection target values.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: April 19, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masatoshi Nakajima, Masahiro Takeuchi, Hidekazu Hironobu, Daiki Yamazaki, Nobuaki Ito, Ryuichi Hata, Yasunori Shinmi
  • Patent number: 11300091
    Abstract: A method and system for operating a vehicle that includes a plurality of engine starting devices and an internal combustion engine is described. In one example, the method determines whether or not to inhibit automatic engine stopping so that a lifespan of an engine starting device may be extended. In one example, the inhibiting is based on a ratio of an actual total number of engine starts generated via the engine starting device to an actual total distance traveled by the vehicle since the engine starting device was installed.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: April 12, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: John Eric Rollinger, Jeffrey Allen Doering, Jason Meyer
  • Patent number: 11300088
    Abstract: A valve body has a seat surface swollen toward a seating surface of an injection hole body having an injection hole. A fuel passage is between the injection hole body and the valve body and is opened and closed due to separation and seating of the seat surface. In a seat portion throttle state, a flow rate of injected fuel is throttled by a gap between the seat surface and the seating surface. In an injection hole throttle state, the flow rate of fuel is throttled by the injection hole. When the valve body is operated from a valve closing position to a full lift position, the seat portion throttle state is brought from the valve closing position to a predetermined intermediate position, and the injection hole throttle state is brought from the intermediate position to the full lift position.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: April 12, 2022
    Assignee: DENSO CORPORATION
    Inventors: Yuki Watanabe, Kouichi Mochizuki, Atsuya Okamoto
  • Patent number: 11279225
    Abstract: Fuel isolation systems, apparatuses and methods are described. In some embodiments, a system comprises a fuel tank, a fuel pump, an engine, a firewall, a fuel line from the fuel tank to the engine, a connector coupled inline with the fuel line on a cold side of the fuel line, a normally closed valve coupled to the connector, an air feed line coupled to an ullage of the fuel tank and to the valve. In the event of an engine fire condition, a control unit outputs signaling to turn off the fuel pump and open the valve to introduce air from the ullage into the fuel line. The introduced air provides a siphon break in the fuel line such that the fuel cannot be siphoned and the only fuel that can pass the firewall is the remaining fuel in the fuel line downstream of the connector and the introduced air.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: March 22, 2022
    Assignee: GENERAL ATOMICS AERONAUTICAL SYSTEMS, INC.
    Inventors: Jason B. Newlin, Brett C. Bonner, Graham Feasey
  • Patent number: 11280261
    Abstract: An HHO gas second fuel is produced in a pressure-resistant container and distributed at a low volumetric rate at multiple locations about the internal combustion engine.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: March 22, 2022
    Assignee: HyTech Power, Inc.
    Inventors: Evan Charles Johnson, Adam Anthony Filkins, Herbert Daniel Deming, Henry White Dean, Phillip Edward Jennings
  • Patent number: 11274621
    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: November 6, 2020
    Date of Patent: March 15, 2022
    Assignee: DENSO CORPORATION
    Inventor: Kengo Ito
  • Patent number: 11268457
    Abstract: An outboard motor, including an engine having a cylinder containing a combustion chamber, an intake pathway connected to the combustion chamber, a piston disposed in the cylinder, a crankshaft connected to the piston, a fuel injection device connected to the intake pathway, and an ignition device connected to the combustion chamber. The outboard motor further includes a controller that is configured to receive a signal indicating an engine speed from a sensor, control the fuel injection device to suspend fuel supply and control the ignition device to suspend ignition, upon determining that the engine is in an over-revolution state, control the fuel injection device to release the suspension of the fuel supply upon determining that the engine has recovered from the over-revolution state, and control the ignition device to release the suspension of the ignition after lapse of a number of cycles of the engine since the release of the suspension of the fuel supply.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: March 8, 2022
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Yoshitaka Kan
  • Patent number: 11230990
    Abstract: A fuel injection method includes applying a first method current to close a spill valve according to a first method, applying a control valve current to open a control valve, and discontinuing the application of the control valve current to thereby cause the control valve to close. The method also includes applying a second method current to maintain the spill valve closed according to a second method and detecting a timing of a closing of the control valve while applying the second method current according to the second method, the second method being different than the first method.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 25, 2022
    Assignee: Caterpillar Inc.
    Inventors: Daniel R. Puckett, Kranti K. Nellutla, Gregory L. Armstrong
  • Patent number: 11225887
    Abstract: An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode can include a rocker shaft and a rocker arm. The rocker shaft can define a pressurized oil supply conduit. The rocker arm can receive the rocker shaft and is configured to rotate around the rocker shaft. The rocker arm can have an oil supply passage defined therein. A valve bridge can engage a first exhaust valve and a second exhaust valve. A hydraulic lash adjuster assembly can include first and second plunger bodies, the first plunger body can engage the valve bridge.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: January 18, 2022
    Assignee: Eaton Intelligent Power Limited
    Inventors: Majo Cecur, Marco Alessandria, Nicola Andrisani
  • Patent number: 11220971
    Abstract: An engine apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be lower when a swirl flow is gentle than when the swirl flow is intense.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: January 11, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi