Patents by Inventor Hiroaki TSUBOKAWA

Hiroaki TSUBOKAWA 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).

  • Reignition processing device, reignition method, and program for gas engine
    Patent number: 11808229
    Abstract: A reignition processing device for a gas engine for executing a reignition process of a cylinder during operation of a gas engine having multiple cylinders is provided with: an execution permission unit configured to, when at least one of the cylinders misfires, perform permission determination whether to execute the reignition process of the misfiring cylinder, on the basis of a damage diagnosis result based on an in-cylinder pressure of the misfiring cylinder, presence or absence of abnormality in a control device which performs combustion control and combustion diagnosis of the gas engine, an operational history related to the misfiring cylinder, and an operational state of the gas engine; and a reignition execution unit configured to execute the reignition process of the misfiring cylinder that is permitted by the permission determination to execute the reignition process.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: November 7, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARER, LTD.
    Inventors: Junnosuke Andou, Masato Mitsuhashi, Hiroaki Tsubokawa, Takahiro Koakutsu
  • REIGNITION PROCESSING DEVICE, REIGNITION METHOD, AND PROGRAM FOR GAS ENGINE
    Publication number: 20220372928
    Abstract: A reignition processing device for a gas engine for executing a reignition process of a cylinder during operation of a gas engine having multiple cylinders is provided with: an execution permission unit configured to, when at least one of the cylinders misfires, perform permission determination whether to execute the reignition process of the misfiring cylinder, on the basis of a damage diagnosis result based on an in-cylinder pressure of the misfiring cylinder, presence or absence of abnormality in a control device which performs combustion control and combustion diagnosis of the gas engine, an operational history related to the misfiring cylinder, and an operational state of the gas engine; and a reignition execution unit configured to execute the reignition process of the misfiring cylinder that is permitted by the permission determination to execute the reignition process.
    Type: Application
    Filed: October 28, 2020
    Publication date: November 24, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Junnosuke ANDOU, Masato MITSUHASHI, Hiroaki TSUBOKAWA, Takahiro KOAKUTSU