Patents by Inventor Takeshi Tsuyuki

Takeshi Tsuyuki 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: 20220268187
    Abstract: Set a lower limit for an engine revolution speed when an accelerator is off while a temperature of the gasoline particulate filter is equal to or lower than a predetermined first temperature or equal to or higher than a predetermined second temperature, the predetermined second temperature being higher than the predetermined first temperature, and continue the lower limit setting for the engine revolution speed until the accelerator becomes on when the temperature of the gasoline particulate filter increases over the predetermined first temperature from the predetermined first temperature or lower or decreases below the predetermined second temperature from the predetermined second temperature or higher after the lower limit for the engine revolution speed is set.
    Type: Application
    Filed: April 8, 2020
    Publication date: August 25, 2022
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi TSUYUKI
  • Publication number: 20210402978
    Abstract: Provided is a control method of a hybrid vehicle provided with an engine, a power-generation motor generator, and a travel motor generator. The hybrid vehicle has a series hybrid mode in which the power-generation motor generator is driven by the engine to generate electric power and the travel motor generator is driven by the electric power generated by the power-generation motor generator. The hybrid vehicle has a filter configured to collect a particulate matter in exhaust gas from the engine. The control method includes performing an operation limitation of the engine based on a loaded amount of the particulate matter in the filter.
    Type: Application
    Filed: November 8, 2018
    Publication date: December 30, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi TSUYUKI
  • Patent number: 11149669
    Abstract: Exhaust particulates are collected by a GPF(gasoline particulate filter) device. EGR control is executed, and exhaust gas flowing through an exhaust passage upstream of the GPF device is introduced into an intake passage via an EGR passage. In the EGR control, an opening area of the EGR passage is controlled to reduce the opening area of the EGR passage according to an operating state of the engine as a particulate deposition amount in the GPF device is increased.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: October 19, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi Tsuyuki
  • Patent number: 11067023
    Abstract: A prescribed air-fuel ratio feedback control region for performing feedback-control of air-fuel ratio has therein: a first region where fuel is injected, during one combustion cycle, only from a first fuel injection valve injecting fuel directly into a cylinder; and a second region where fuel is injected, during one combustion cycle, from both of the first fuel injection valve and a second fuel injection valve injecting fuel into an air-intake passage. A second region is configured such that an amount of fuel injected from the first fuel injection valve and an amount of fuel injected from the second fuel injection valve remain at a given constant ratio regardless of operating status. A diagnosis on the first and second fuel injection valves is performed by using a first air-fuel ratio learning value learned in the first region and a second air-fuel ratio learning value learned in the second region.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 20, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi Tsuyuki
  • Publication number: 20210148299
    Abstract: A prescribed air-fuel ratio feedback control region for performing feedback-control of air-fuel ratio has therein: a first region where fuel is injected, during one combustion cycle, only from a first fuel injection valve injecting fuel directly into a cylinder; and a second region where fuel is injected, during one combustion cycle, from both of the first fuel injection valve and a second fuel injection valve injecting fuel into an air-intake passage. A second region is configured such that an amount of fuel injected from the first fuel injection valve and an amount of fuel injected from the second fuel injection valve remain at a given constant ratio regardless of operating status. A diagnosis on the first and second fuel injection valves is performed by using a first air-fuel ratio learning value learned in the first region and a second air-fuel ratio learning value learned in the second region.
    Type: Application
    Filed: October 23, 2017
    Publication date: May 20, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi TSUYUKI
  • Publication number: 20210071603
    Abstract: Exhaust particulates are collected by a GPF(gasoline particulate filter) device. EGR control is executed, and exhaust gas flowing through an exhaust passage upstream of the GPF device is introduced into an intake passage via an EGR passage. In the EGR control, an opening area of the EGR passage is controlled to reduce the opening area of the EGR passage according to an operating state of the engine as a particulate deposition amount in the GPF device is increased.
    Type: Application
    Filed: December 27, 2017
    Publication date: March 11, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi TSUYUKI
  • Patent number: 10570850
    Abstract: A direct-injection internal combustion engine is controlled such that an injection count of multiple-stage injection is switched according to an operating region, and the multiple-stage injection is performed. The multiple-stage injection divides fuel into multiple times in one combustion cycle, and injects the fuel. Fuel vapor generated in a fuel tank as evaporated fuel is supplied to the internal combustion engine. An operating region in which the injection count of the multiple-stage injection is large is controlled to be narrower when an amount of the evaporated fuel supplied to the internal combustion engine is large, compared with a case of the amount of the evaporated fuel being not large.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: February 25, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi Tsuyuki, Takao Inoue
  • Patent number: 10428785
    Abstract: An engine controller controls a direct fuel-injection, spark ignition engine including a fuel injection valve configured to directly inject a fuel into a cylinder, and an ignition plug that spark-ignites a mixture in the cylinder. The engine controller is provided with an acceleration request sensor configured to detect an acceleration request of a driver, and when the acceleration request occurs and a top surface temperature of a piston in the cylinder is lower than a predetermined temperature, the engine controller retards an ignition timing so that a period of time until a flame after the ignition reaches the piston top surface is extended.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: October 1, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro Imaoka, Takeshi Tsuyuki, Takao Inoue
  • Patent number: 10280858
    Abstract: An engine control device controls a cylinder direct fuel injection type spark ignition engine provided with a fuel injection valve configured to directly inject fuel into a cylinder and an ignition plug configured to perform spark ignition for a gas mixture inside the cylinder. The engine control device executes a catalyst warm-up operation for retarding an ignition timing, during a compression stroke of the fuel injection timing, in a case where it is necessary to warm up an exhaust gas purifying catalyst inserted into an exhaust passage. In addition, the engine control device increases a valve overlap period as a piston crown surface temperature increases during execution of the catalyst warm-up operation.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: May 7, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi Tsuyuki, Yoshihiro Imaoka, Ryo Uchida, Takao Inoue
  • Patent number: 10273922
    Abstract: An object of a control method to control a direct injection internal combustion engine that directly injects fuel in a cylinder is to reduce an increase in PN caused by attachment of the fuel to a fuel injection valve distal end. The control method cools the fuel before a fuel temperature when the fuel passes through an injection hole on a fuel injection valve reaches a temperature at which an amount of attached fuel to the fuel injection valve distal end increases.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: April 30, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro Imaoka, Takao Inoue, Takeshi Tsuyuki
  • Publication number: 20190040830
    Abstract: An object of a control method to control a direct injection internal combustion engine that directly injects fuel in a cylinder is to reduce an increase in PN caused by attachment of the fuel to a fuel injection valve distal end. The control method cools the fuel before a fuel temperature when the fuel passes through an injection hole on a fuel injection valve reaches a temperature at which an amount of attached fuel to the fuel injection valve distal end increases.
    Type: Application
    Filed: February 12, 2016
    Publication date: February 7, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro IMAOKA, Takao INOUE, Takeshi TSUYUKI
  • Publication number: 20190032592
    Abstract: A direct-injection internal combustion engine is controlled such that an injection count of multiple-stage injection is switched according to an operating region, and the multiple-stage injection is performed. The multiple-stage injection divides fuel into multiple times in one combustion cycle, and injects the fuel. Fuel vapor generated in a fuel tank as evaporated fuel is supplied to the internal combustion engine. An operating region in which the injection count of the multiple-stage injection is large is controlled to be narrower when an amount of the evaporated fuel supplied to the internal combustion engine is large, compared with a case of the amount of the evaporated fuel being not large.
    Type: Application
    Filed: January 14, 2016
    Publication date: January 31, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi TSUYUKI, Takao INOUE
  • Patent number: 10119486
    Abstract: An engine control device controls a cylinder direct fuel injection type spark ignition engine provided with a fuel injection valve configured to directly inject fuel to a cylinder and an ignition plug configured to perform spark ignition for a gas mixture inside the cylinder. In a case where it is necessary to warm up an exhaust gas purifying catalyst disposed in an exhaust passage, the engine control device executes a catalyst warm-up operation in which a fuel is injected at a timing during the compression stroke, and at a timing when the fuel spray colliding with the piston crown surface moves toward the ignition plug along the shape of the piston crown surface, and in which the ignition timing is after compression top dead center. The engine control device advances the fuel injection timing in accordance with an increase in an estimation amount of a liquid fuel remaining on the top surface of the piston during execution of the catalyst warm-up operation.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: November 6, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro Imaoka, Takeshi Tsuyuki, Takao Inoue
  • Publication number: 20180135546
    Abstract: An engine control device controls a cylinder direct fuel injection type spark ignition engine provided with a fuel injection valve configured to directly inject fuel into a cylinder and an ignition plug configured to perform spark ignition for a gas mixture inside the cylinder. The engine control device executes a catalyst warm-up operation for retarding an ignition timing, during a compression stroke of the fuel injection timing, in a case where it is necessary to warm up an exhaust gas purifying catalyst inserted into an exhaust passage. In addition, the engine control device increases a valve overlap period as a piston crown surface temperature increases during execution of the catalyst warm-up operation.
    Type: Application
    Filed: April 20, 2015
    Publication date: May 17, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi TSUYUKI, Yoshihiro IMAOKA, Takao INOUE
  • Publication number: 20180128235
    Abstract: An engine controller controls a direct fuel-injection, spark ignition engine including a fuel injection valve configured to directly inject a fuel into a cylinder, and an ignition plug that spark-ignites a mixture in the cylinder. The engine controller is provided with an acceleration request sensor configured to detect an acceleration request of a driver, and when the acceleration request occurs and a top surface temperature of a piston in the cylinder is lower than a predetermined temperature, the engine controller retards an ignition timing so that a period of time until a flame after the ignition reaches the piston top surface is extended.
    Type: Application
    Filed: April 16, 2015
    Publication date: May 10, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro IMAOKA, Takeshi TSUYUKI, Takao INOUE
  • Patent number: 9945297
    Abstract: An engine controller controls a direct fuel-injection engine including a fuel injection valve for directly injecting a fuel into a cylinder and a valve overlap period adjusting mechanism for adjusting a valve overlap period between an open period of an intake valve and an open period of an exhaust valve. The engine controller is provided with an acceleration request sensor for detecting an acceleration request of a driver, and when the acceleration request occurs and a top surface temperature of a piston in the cylinder is lower than a predetermined temperature, the engine controller extends the valve overlap period between the open period of the intake valve and the open period of the exhaust valve, ranging before and after an exhaust top dead center.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: April 17, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi Tsuyuki, Yoshihiro Imaoka, Takao Inoue
  • Publication number: 20180080400
    Abstract: An engine control device controls a cylinder direct fuel injection type spark ignition engine provided with a fuel injection valve configured to directly inject fuel to a cylinder and an ignition plug configured to perform spark ignition for a gas mixture inside the cylinder. In a case where it is necessary to warm up an exhaust gas purifying catalyst disposed in an exhaust passage, the engine control device executes a catalyst warm-up operation in which a fuel is injected at a timing during the compression stroke, and at a timing when the fuel spray colliding with the piston crown surface moves toward the ignition plug along the shape of the piston crown surface, and in which the ignition timing is after compression top dead center. The engine control device advances the fuel injection timing in accordance with an increase in an estimation amount of a liquid fuel remaining on the top surface of the piston during execution of the catalyst warm-up operation.
    Type: Application
    Filed: April 14, 2015
    Publication date: March 22, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yoshihiro IMAOKA, Takeshi TSUYUKI, Takao INOUE
  • Publication number: 20180073445
    Abstract: An engine controller controls a direct fuel-injection engine including a fuel injection valve for directly injecting a fuel into a cylinder and a valve overlap period adjusting mechanism for adjusting a valve overlap period between an open period of an intake valve and an open period of an exhaust valve. The engine controller is provided with an acceleration request sensor for detecting an acceleration request of a driver, and when the acceleration request occurs and a top surface temperature of a piston in the cylinder is lower than a predetermined temperature, the engine controller extends the valve overlap period between the open period of the intake valve and the open period of the exhaust valve, ranging before and after an exhaust top dead center.
    Type: Application
    Filed: April 16, 2015
    Publication date: March 15, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takeshi TSUYUKI, Yoshihiro IMAOKA, Takao INOUE
  • Patent number: 9759165
    Abstract: An upper-limit threshold value and a lower-limit threshold value of a fore-and-aft differential pressure of an EGR control valve is calculated based on an intake-air quantity detected by an airflow meter. An actual fore-and-aft differential pressure of the EGR control valve is calculated from detected values of an upstream-side pressure sensor and a downstream-side pressure sensor. Then, these threshold values are compared with the actual fore-and-aft differential pressure, and when the actual fore-and-aft differential pressure exceeds the upper-limit threshold value or when the actual fore-and-aft differential pressure is less than the lower-limit threshold value, it is determined that the pressure loss of an intake and exhaust system has changed. If it is determined that the pressure loss of an intake and exhaust system has changed, EGR is inhibited, and if not so, EGR is permitted to be performed. These threshold values are varied depending on a target EGR rate.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: September 12, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Daisuke Takaki, Hirofumi Tsuchida, Takeshi Tsuyuki
  • Patent number: 9677499
    Abstract: There is provided a control device of an engine that includes a turbo-supercharger and a variable valve mechanism, the control device including: a valve timing change means; an ignition timing change means; a fuel injection amount change means; an acceleration request detection means; a supercharging pressure detection means; and an acceleration control means that corrects, when the acceleration request is detected, retarding of ignition timing in a low supercharging region where the supercharging pressure is lower than a predetermined value, that completes the correction of the retarding of the ignition timing in a high supercharging region where the supercharging pressure is equal to or higher than the predetermined value to provide a valve overlap and that changes the fuel injection amount such that an air-fuel ratio at which a mixture air of a scavenging gas and an exhaust gas is easily burned within an exhaust passage is provided.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: June 13, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi Tsuyuki