Patents by Inventor Masanori Ootubo

Masanori Ootubo 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).

  • Glow plug energization control apparatus and method
    Patent number: 7487753
    Abstract: There is provided an energization control apparatus for a glow plug in an engine, including a post-start glow section to control energization of a resistance heater of the glow plug by a battery after start of the engine. The post-start glow section is configured to evaluate revolution stability of the engine and control the energization of the resistance heater according to a first control pattern when the engine revolution stability is higher than or equal to a threshold level and according to a second control pattern that achieves a higher temperature of the sheath heater than the first control pattern when the engine revolution stability is lower than the threshold level.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 10, 2009
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Shunsuke Gotou, Hiroshi Ono, Masanori Ootubo
  • Glow plug energization control apparatus and method
    Publication number: 20070227488
    Abstract: There is provided an energization control apparatus for a glow plug in an engine, including a post-start glow section to control energization of a resistance heater of the glow plug by a battery after start of the engine. The post-start glow section is configured to evaluate revolution stability of the engine and control the energization of the resistance heater according to a first control pattern when the engine revolution stability is higher than or equal to a threshold level and according to a second control pattern that achieves a higher temperature of the sheath heater than the first control pattern when the engine revolution stability is lower than the threshold level.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 4, 2007
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Shunsuke Gotou, Hiroshi Ono, Masanori Ootubo