Patents by Inventor Kanae Fuki

Kanae Fuki 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).

  • Publication number: 20210102508
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which detects or estimates an engine speed achieved by combustion in an n-th cycle; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in an (n+1)-th cycle. If the engine speed achieved by the combustion in the n-th cycle falls in the resonance range, the injection amount setting section sets the fuel injection amount for an (n+1)-th cycle to be larger than the fuel injection amount injected when the engine speed is higher than or equal to an upper limit of the resonance range.
    Type: Application
    Filed: November 30, 2016
    Publication date: April 8, 2021
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Patent number: 10890122
    Abstract: At start of an engine, a fuel injection amount is set to a jump-over injection amount if the engine speed obtained in each cycle is higher than or equal to a determination threshold value, which is set lower than a lower limit of a resonance speed range of powertrain by a predetermined reference value. If the engine speed is lower than the value, the fuel injection amount is set to a step-over injection amount that is smaller than the jump-over injection amount. This setting makes it possible to increase the engine speed such that the engine speed approaches the lower limit of the resonance speed range causing resonance in the powertrain, up to a predetermined range, and then causes the engine speed to jump straight to an engine speed which exceeds the resonance speed range, while in the process of increasing the engine speed by executing the combustion cycles.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: January 12, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Patent number: 10883464
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which obtains an engine speed; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in next and subsequent cycles. If an engine speed achieved by combustion in an (n?1)-th cycle is higher than or equal to a determination threshold value and lower than a lower limit of the resonance range, the injection amount setting section sets the fuel injection amount for the n-th cycle to a jump-over injection amount, and sets the fuel injection amount for the (n+1)-th cycle to a resonance induction reducing amount, which is smaller than the jump-over injection amount.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: January 5, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Publication number: 20190345906
    Abstract: A system for controlling a compression ignition engine includes: a speed obtaining section which obtains an engine speed; and an injection amount setting section which sets, in a start period after the start of cranking, a fuel injection amount to be injected by injectors in next and subsequent cycles. If an engine speed achieved by combustion in an (n?1)-th cycle is higher than or equal to a determination threshold value and lower than a lower limit of the resonance range, the injection amount setting section sets the fuel injection amount for the n-th cycle to a jump-over injection amount, and sets the fuel injection amount for the (n+1)-th cycle to a resonance induction reducing amount, which is smaller than the jump-over injection amount.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 14, 2019
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki
  • Publication number: 20190293005
    Abstract: At start of an engine, a fuel injection amount is set to a jump-over injection amount if the engine speed obtained in each cycle is higher than or equal to a determination threshold value, which is set lower than a lower limit of a resonance speed range of powertrain by a predetermined reference value. If the engine speed is lower than the value, the fuel injection amount is set to a step-over injection amount that is smaller than the jump-over injection amount. This setting makes it possible to increase the engine speed such that the engine speed approaches the lower limit of the resonance speed range causing resonance in the powertrain, up to a predetermined range, and then causes the engine speed to jump straight to an engine speed which exceeds the resonance speed range, while in the process of increasing the engine speed by executing the combustion cycles.
    Type: Application
    Filed: November 30, 2016
    Publication date: September 26, 2019
    Inventors: Kanae Fuki, Kotaro Takahashi, Toru Kobayashi, Hiromu Sugano, Masahiro Tateishi, Ryohei Karatsu, Takamitsu Miyahigashi, Jiro Yamasaki