Patents by Inventor Toshitaka Fujiki

Toshitaka Fujiki 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).

  • Fuel pressure control apparatus for an internal combustion engine
    Patent number: 7853398
    Abstract: The engine ECU executes a program including the step of setting an upper limit guard value of a fuel pressure by executing low fuel pressure control in the case where a low fuel pressure control execution condition is satisfied with fulfillment of conditions that execution of the low fuel pressure control is permitted, that engine speed NE is lower than a threshold value, and that the atmospheric pressure is higher than a threshold value, and the step of controlling the fuel pressure to be a target fuel pressure within a range not exceeding the upper limit guard value.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: December 14, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Seiji Hirowatari, Masanao Idogawa, Masahiko Teraoka, Toshitaka Fujiki
  • CONTROL DEVICE AND CONTROL METHOD FOR SPARK-IGNITION DIRECT-INJECTION INTERNAL COMBUSTION ENGINE
    Publication number: 20090234557
    Abstract: If two-split injection logic has been adopted, an engine ECU executes a program including the steps of calculating first injection start timing of the two-split injection logic, calculating second injection start timing of the two-split injection logic, calculating a first injection permitted time period A of the two-split injection logic, calculating a first injection required time period B of the two-split injection logic, and adopting single injection logic instead of the two-split injection logic if the first injection start timing A of the two-split injection logic is shorter than the first injection required time period B of the two-split injection logic.
    Type: Application
    Filed: December 4, 2006
    Publication date: September 17, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Seiji Hirowatari, Masahiko Teraoka, Jun Maemura, Toshitaka Fujiki
  • FUEL PRESSURE CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE
    Publication number: 20090093943
    Abstract: The engine ECU executes a program including the step (S320) of setting an upper limit guard value of a fuel pressure by executing low fuel pressure control in the case where a low fuel pressure control execution condition is satisfied with fulfillment of conditions that execution of the low fuel pressure control is permitted, that engine speed NE is lower than a threshold value, and that the atmospheric pressure is higher than a threshold value (S310), and the step (S330) of controlling the fuel pressure to be a target fuel pressure within a range not exceeding the upper limit guard value.
    Type: Application
    Filed: August 15, 2006
    Publication date: April 9, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Seiji Hirowatari, Masanao Idogawa, Masahiko Teraoka, Toshitaka Fujiki