Patents by Inventor Kingo Suyama

Kingo Suyama 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).

  • Patent number: 10774713
    Abstract: A reducing agent supply device includes a tank, an adding valve, a pump, and an electronic control unit. The adding valve is configured to receive the reducing agent supplied from the tank and inject the reducing agent. The pump is configured to send the reducing agent from the tank and suction the reducing agent back into the tank. The electronic control unit is configured to open the adding valve and suction the reducing agent back into the tank as a purge control when the internal combustion engine is commanded to stop. The electronic control unit is configured to increase an amount of a return suction of the reducing agent during the purge control as an amount of the reducing agent, remaining in a supply path and the adding valve when the stop command is given, increases.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 15, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kingo Suyama
  • Patent number: 9845718
    Abstract: A controller calculates a period travel distance that is a travel distance of the vehicle from when the available travel distance is calculated to when the available travel distance is calculated next. The controller, when the remaining amount of urea aqueous solution inside a tank exceeds a predetermined amount, executes a first calculation process in which the available travel distance is calculated with reference to the remaining amount of the urea aqueous solution. The controller, after the remaining amount of the urea aqueous solution becomes smaller than or equal to a predetermined amount, executes a second calculation process in which the available travel distance is calculated by subtracting the period travel distance from the previously calculated available travel distance.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: December 19, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takahiro Kiyofuji, Kingo Suyama, Gaku Kishimoto, Atsushi Kidokoro
  • Publication number: 20160348556
    Abstract: A reducing agent supply device includes a tank, an adding valve, a pump, and an electronic control unit. The adding valve is configured to receive the reducing agent supplied from the tank and inject the reducing agent. The pump is configured to send the reducing agent from the tank and suction the reducing agent back into the tank. The electronic control unit is configured to open the adding valve and suction the reducing agent back into the tank as a purge control when the internal combustion engine is commanded to stop. The electronic control unit is configured to increase an amount of a return suction of the reducing agent during the purge control as an amount of the reducing agent, remaining in a supply path and the adding valve when the stop command is given, increases.
    Type: Application
    Filed: May 27, 2016
    Publication date: December 1, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kingo SUYAMA
  • Publication number: 20160281568
    Abstract: A controller calculates a period travel distance that is a travel distance of the vehicle from when the available travel distance is calculated to when the available travel distance is calculated next. The controller, when the remaining amount of urea aqueous solution inside a tank exceeds a predetermined amount, executes a first calculation process in which the available travel distance is calculated with reference to the remaining amount of the urea aqueous solution. The controller, after the remaining amount of the urea aqueous solution becomes smaller than or equal to a predetermined amount, executes a second calculation process in which the available travel distance is calculated by subtracting the period travel distance from the previously calculated available travel distance.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takahiro KIYOFUJI, Kingo SUYAMA, Gaku KISHIMOTO, Atsushi KIDOKORO
  • Patent number: 8261532
    Abstract: In an exhaust gas control apparatus for an internal combustion engine (1) of the invention, including an exhaust gas control catalyst (8) which purifies exhaust gas released from the internal combustion engine (1), and a fuel supply valve (10) which supplies fuel to a portion upstream of the exhaust gas control catalyst (8), the fuel supply valve (10) is operated such that a cycle formed by combining a fuel supply period in which fuel is supplied from the fuel supply valve (10) and a fuel supply stopped period in which fuel is not supplied is repeatedly performed in order to control the temperature of the exhaust gas control catalyst (8) to the target temperature. The arrangement of the fuel supply period and the fuel supply stopped period is controlled such that the temperature of the exhaust gas control catalyst (8) at each of a starting point (P1) and an ending poring (P3) of each cycle is equal to the target temperature.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: September 11, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koichiro Fukuda, Kingo Suyama
  • Publication number: 20080060347
    Abstract: When the temperature of exhaust gas control means (3), which is provided in an exhaust passage (2) of an internal combustion engine (1) and which has oxidation function, is increased to a target temperature in order to recover an exhaust gas control ability of the exhaust gas control means (3), the method of increasing the temperature of the exhaust gas control means (3) is switched between a method in which the temperature of the exhaust gas control means (3) is increased by controlling an amount of fuel supplied to the exhaust gas control means (3) and a method in which the fuel supply to the exhaust gas control means (3) is prohibited and the temperature of the exhaust gas control means (3) is increased by controlling an amount of air taken in the internal combustion engine (1), based on an operation state of the internal combustion engine (1).
    Type: Application
    Filed: July 19, 2006
    Publication date: March 13, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Tominaga, Kingo Suyama, Takeshi Hashizume, Hideki Aoki
  • Publication number: 20070214769
    Abstract: In an exhaust gas control apparatus for an internal combustion engine (1) of the invention, including an exhaust gas control catalyst (8) which purifies exhaust gas released from the internal combustion engine (1), and a fuel supply valve (10) which supplies fuel to a portion upstream of the exhaust gas control catalyst (8), the fuel supply valve (10) is operated such that a cycle formed by combining a fuel supply period in which fuel is supplied from the fuel supply valve (10) and a fuel supply stopped period in which fuel is not supplied is repeatedly performed in order to control the temperature of the exhaust gas control catalyst (8) to the target temperature. The arrangement of the fuel supply period and the fuel supply stopped period is controlled such that the temperature of the exhaust gas control catalyst (8) at each of a starting point (P1) and an ending poring (P3) of each cycle is equal to the target temperature.
    Type: Application
    Filed: May 19, 2005
    Publication date: September 20, 2007
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koichiro Fukuda, Kingo Suyama
  • Patent number: 6932069
    Abstract: An air fuel ratio control apparatus for an internal combustion engine can improve learning accuracy in the air fuel ratio control even if the air fuel ratio of a mixture detected by an air fuel ratio detection device shifts from an actual air fuel ratio thereof. The apparatus controls the air fuel ratio of an exhaust gas flowing into an exhaust gas purification device based on an air fuel ratio feedback value and an air fuel ratio learning value. A temperature detection device detects the temperature of the exhaust gas purification device. A determination device determines, based on a difference between a detection value of the temperature detection device and a target temperature, that the air fuel ratio detection device shifts to a rich or lean side. The update of the air fuel ratio learning value is inhibited when the air fuel ratio detection device shifts to a rich or lean side.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: August 23, 2005
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kingo Suyama, Koichiro Fukuda
  • Publication number: 20050076635
    Abstract: An air fuel ratio control apparatus for an internal combustion engine can improve learning accuracy in the air fuel ratio control even if the air fuel ratio of a mixture detected by an air fuel ratio detection device shifts from an actual air fuel ratio thereof. The apparatus controls the air fuel ratio of an exhaust gas flowing into an exhaust gas purification device based on an air fuel ratio feedback value and an air fuel ratio learning value. A temperature detection device detects the temperature of the exhaust gas purification device. A determination device determines, based on a difference between a detection value of the temperature detection device and a target temperature, that the air fuel ratio detection device shifts to a rich or lean side. The update of the air fuel ratio learning value is inhibited when the air fuel ratio detection device shifts to a rich or lean side.
    Type: Application
    Filed: October 4, 2004
    Publication date: April 14, 2005
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kingo Suyama, Koichiro Fukuda