Patents by Inventor Kiyoshi Ohga

Kiyoshi Ohga 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).

  • Control apparatus and control method for diesel engine
    Patent number: 10626810
    Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: April 21, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Toru Nishizawa, Shuichi Iio, Kiyoshi Ohga, Ryota Nakayama, Takashi Yamazaki, Yoshihiro Imaoka, Yasushi Ohmura, Isshou Uehara, Masahiko Nakano, Manabu Hasegawa
  • CONTROL APPARATUS AND CONTROL METHOD FOR DIESEL ENGINE
    Publication number: 20180080394
    Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Toru NISHIZAWA, Shuichi IIO, Kiyoshi OHGA, Ryota NAKAYAMA, Takashi YAMAZAKI, Yoshihiro IMAOKA, Yasushi OHMURA, Isshou UEHARA, Masahiko NAKANO, Manabu HASEGAWA
  • Control apparatus and control method for diesel engine
    Patent number: 9890719
    Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 13, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Toru Nishizawa, Shuichi Iio, Kiyoshi Ohga, Ryota Nakayama, Takashi Yamazaki, Yoshihiro Imaoka, Yasushi Ohmura, Isshou Uehara, Masahiko Nakano, Manabu Hasegawa
  • CONTROL APPARATUS AND CONTROL METHOD FOR DIESEL ENGINE
    Publication number: 20150083071
    Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 26, 2015
    Inventors: Toru Nishizawa, Shuichi Iio, Kiyoshi Ohga, Ryota Nakayama, Takashi Yamazaki, Yoshihiro Imaoka, Yasushi Ohmura, Isshou Uehara, Masahiko Nakano, Manabu Hasegawa
  • Engine fuel injection control method and engine fuel injection control apparatus
    Patent number: 7322340
    Abstract: An engine fuel injection control apparatus has a parameter setting section, a parameter changing section and a determining section. The parameter setting section is configured to set a parameter of fuel injected into an engine to a first injection parameter to control a state of combustion noise or exhaust emission to a target state when an engine operation condition is in a first operation region. The parameter changing section is configured to change the parameter of fuel injected into the engine from the first injection parameter to a second injection parameter when the engine operation condition remains in the first operation region. The determining section is configured to determine whether or not an actual state of the combustion noise or the exhaust emission of the engine changes when the parameter of fuel injected into the engine is changed from the first injection parameter to the second injection parameter.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: January 29, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Kiyoshi Ohga
  • Engine fuel injection control method and engine fuel injection control apparatus
    Publication number: 20070131203
    Abstract: An engine fuel injection control apparatus has a parameter setting section, a parameter changing section and a determining section. The parameter setting section is configured to set a parameter of fuel injected into an engine to a first injection parameter to control a state of combustion noise or exhaust emission to a target state when an engine operation condition is in a first operation region. The parameter changing section is configured to change the parameter of fuel injected into the engine from the first injection parameter to a second injection parameter when the engine operation condition remains in the first operation region. The determining section is configured to determine whether or not an actual state of the combustion noise or the exhaust emission of the engine changes when the parameter of fuel injected into the engine is changed from the first injection parameter to the second injection parameter.
    Type: Application
    Filed: November 21, 2006
    Publication date: June 14, 2007
    Applicant: Nissan Motor Co., Ltd.
    Inventor: Kiyoshi Ohga