Patents by Inventor Shigeta KIKUCHI

Shigeta KIKUCHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Internal combustion engine controller and method for estimating pumping loss
    Patent number: 11933235
    Abstract: An internal combustion engine to which a controller is applied includes a cylinder, a turbocharger, an intake passage, a throttle valve, and an exhaust passage. The turbocharger includes a turbine wheel, a compressor wheel, and a wastegate valve. The controller executes a loss estimating process that calculates an estimated value of a pumping loss of the internal combustion engine from an intake air pressure, which is air pressure at a downstream side of the throttle valve in the intake passage, an engine speed of the internal combustion engine, and a charging pressure.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: March 19, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeta Kikuchi, Tatsuya Suzuki, Hiroaki Mizoguchi
  • Engine control system, engine control method, and engine control program
    Patent number: 11885272
    Abstract: An engine control system according to the present disclosure includes an oil temperature sensor and a waste gate valve control unit. The oil temperature sensor detects a temperature of an engine oil. The waste gate valve control unit controls opening and closing of a waste gate valve based on the temperature of the engine oil detected by the oil temperature sensor. More specifically, when the temperature of the engine oil detected by the oil temperature sensor is equal to or less than a predetermined threshold, the waste gate valve control unit controls the waste gate valve so that it opens.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: January 30, 2024
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeta Kikuchi, Tatsuya Suzuki, Hiroaki Mizoguchi, Toshiaki Otani
  • ENGINE CONTROL SYSTEM, ENGINE CONTROL METHOD, AND ENGINE CONTROL PROGRAM
    Publication number: 20230374948
    Abstract: An engine control system according to the present disclosure includes an oil temperature sensor and a waste gate valve control unit. The oil temperature sensor detects a temperature of an engine oil. The waste gate valve control unit controls opening and closing of a waste gate valve based on the temperature of the engine oil detected by the oil temperature sensor. More specifically, when the temperature of the engine oil detected by the oil temperature sensor is equal to or less than a predetermined threshold, the waste gate valve control unit controls the waste gate valve so that it opens.
    Type: Application
    Filed: May 24, 2023
    Publication date: November 23, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeta KIKUCHI, Tatsuya SUZUKI, Hiroaki MIZOGUCHI, Toshiaki OTANI
  • INTERNAL COMBUSTION ENGINE CONTROLLER AND METHOD FOR ESTIMATING PUMPING LOSS
    Publication number: 20230366359
    Abstract: An internal combustion engine to which a controller is applied includes a cylinder, a turbocharger, an intake passage, a throttle valve, and an exhaust passage. The turbocharger includes a turbine wheel, a compressor wheel, and a wastegate valve. The controller executes a loss estimating process that calculates an estimated value of a pumping loss of the internal combustion engine from an intake air pressure, which is air pressure at a downstream side of the throttle valve in the intake passage, an engine speed of the internal combustion engine, and a charging pressure.
    Type: Application
    Filed: April 24, 2023
    Publication date: November 16, 2023
    Inventors: Shigeta KIKUCHI, Tatsuya SUZUKI, Hiroaki MIZOGUCHI