Patents by Inventor Kazuki Iijima

Kazuki Iijima 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: 11961342
    Abstract: A driving assistance device includes a malfunction detection unit configured to detect a plurality of malfunctions in devices mounted on a vehicle, a candidate selection unit configured to select candidates for a plurality of actions urged on a driver in accordance with the plural malfunctions detected by the malfunction detection unit, a priority determination unit configured to choose a candidate having a higher priority as an action urged on the driver from the candidates for the plural actions selected by the candidate selection unit, and an information unit configured to inform the driver of the action to be urged on the driver chosen by the priority determination unit.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 16, 2024
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuki Iijima, Yuki Fujita
  • Patent number: 11525765
    Abstract: The objective of the present invention is to provide a particle detection device and a particle detection method that can individually and continuously detect a wide range of particles. The objective is achieved by a particle detection device including: a particle separation channel through which particles are separated according to particle sizes in a perpendicular direction to the flow of fluid; and two or more particle recovery channels that are connected to and branched from the particle separation channel, in which each of the particle recovery channels includes a particle detection unit that includes an aperture and an electric detector.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: December 13, 2022
    Assignees: TOSOH CORPORATION, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
    Inventors: Kazuki Iijima, Toshinobu Toyoshima, Kotohiro Furukawa, Koji Katayama, Naotaka Jin, Minoru Seki
  • Patent number: 11312363
    Abstract: It is a control method of a hybrid vehicle that includes an engine and an electrical power generation motor that is connected with the engine for controlling a rotational speed of the engine to be a target rotational speed. When an failure with respect to the engine is judged, an upper limit of a target rotational speed of a firing operation is set to a first upper limit rotational speed lower than an upper limit for a normal state. Further, a target rotational speed of a motoring operation is set to be not higher than the first upper limit rotational speed. It becomes possible to carry out transition between the firing operation and the motoring operation quickly.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 26, 2022
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuki Fujita, Takeo Aizawa, Kazuki Iijima
  • Publication number: 20210285863
    Abstract: The objective of the present invention is to provide a particle detection device and a particle detection method that can individually and continuously detect a wide range of particles. The objective is achieved by a particle detection device including: a particle separation channel through which particles are separated according to particle sizes in a perpendicular direction to the flow of fluid; and two or more particle recovery channels that are connected to and branched from the particle separation channel, in which each of the particle recovery channels includes a particle detection unit that includes an aperture and an electric detector.
    Type: Application
    Filed: February 13, 2018
    Publication date: September 16, 2021
    Applicants: TOSOH CORPORATION, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
    Inventors: Kazuki IIJIMA, Toshinobu TOYOSHIMA, Kotohiro FURUKAWA, Koji KATAYAMA, Naotaka JIN, Minoru SEKI
  • Publication number: 20210174615
    Abstract: A driving assistance device includes a malfunction detection unit configured to detect a plurality of malfunctions in devices mounted on a vehicle, a candidate selection unit configured to select candidates for a plurality of actions urged on a driver in accordance with the plural malfunctions detected by the malfunction detection unit, a priority determination unit configured to choose a candidate having a higher priority as an action urged on the driver from the candidates for the plural actions selected by the candidate selection unit, and an information unit configured to inform the driver of the action to be urged on the driver chosen by the priority determination unit.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 10, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kazuki IIJIMA, Yuki FUJITA
  • Publication number: 20200391722
    Abstract: It is a control method of a hybrid vehicle that includes an engine and an electrical power generation motor that is connected with the engine for controlling a rotational speed of the engine to be a target rotational speed. When an failure with respect to the engine is judged, an upper limit of a target rotational speed of a firing operation is set to a first upper limit rotational speed lower than an upper limit for a normal state. Further, a target rotational speed of a motoring operation is set to be not higher than the first upper limit rotational speed. It becomes possible to carry out transition between the firing operation and the motoring operation quickly.
    Type: Application
    Filed: December 15, 2017
    Publication date: December 17, 2020
    Inventors: Yuki Fujita, Takeo Aizawa, Kazuki Iijima
  • Patent number: 10513971
    Abstract: An ECM determines a failure exist and a failure site in a control valve device from first and second failure diagnoses. In the first failure diagnosis, a failure is determined to have occurred if an opening amount that represents an absolute value of a difference between a detected opening amount and a target opening amount of a valve body is greater than a preset threshold when the target opening amount of the valve body is constant for a predetermined time. In the second failure diagnosis, a failure is determined to have occurred if an opening amount that represents the absolute value of the difference between the opening amount of the valve body when fully open or fully closed and the detected opening amount is greater than the preset threshold when a portion rotating integrally with the valve body has been pressed against a stopper continuously for a predetermined time.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: December 24, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kazuki Iijima, Osamu Ooki
  • Patent number: 10371107
    Abstract: An air intake device for an internal combustion engine of the present invention includes a water discharge passage extending from a bottom surface of a control valve housing part recessed in a housing passage forming part of an air intake passage to an air intake port. The water discharge passage is formed independently from the air intake passage, and includes: a water collection groove recessed in the bottom surface; a water discharge hole formed penetrating a cover of a valve control housing; and a water discharge hole penetrating a flange part of an insert inserted into the air intake port. The downstream end of the water discharge hole is connected to a space defined between an air intake port inner wall surface and an insert cylindrical part.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: August 6, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Osamu Ooki, Kazuki Iijima
  • Publication number: 20180347522
    Abstract: An air intake device for an internal combustion engine of the present invention includes a water discharge passage extending from a bottom surface of a control valve housing part recessed in a housing passage forming part of an air intake passage to an air intake port. The water discharge passage is formed independently from the air intake passage, and includes: a water collection groove recessed in the bottom surface; a water discharge hole formed penetrating a cover of a valve control housing; and a water discharge hole penetrating a flange part of an insert inserted into the air intake port. The downstream end of the water discharge hole is connected to a space defined between an air intake port inner wall surface and an insert cylindrical part.
    Type: Application
    Filed: November 19, 2015
    Publication date: December 6, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Osamu OOKI, Kazuki IIJIMA
  • Publication number: 20180283263
    Abstract: An ECM determines a failure exist and a failure site in a control valve device from first and second failure diagnoses. In the first failure diagnosis, a failure is determined to have occurred if an opening amount that represents an absolute value of a difference between a detected opening amount and a target opening amount of a valve body is greater than a preset threshold when the target opening amount of the valve body is constant for a predetermined time. In the second failure diagnosis, a failure is determined to have occurred if an opening amount that represents the absolute value of the difference between the opening amount of the valve body when fully open or fully closed and the detected opening amount is greater than the preset threshold when a portion rotating integrally with the valve body has been pressed against a stopper continuously for a predetermined time.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 4, 2018
    Inventors: Kazuki IIJIMA, Osamu OOKI
  • Patent number: 9399980
    Abstract: A water temperature indicated at a startup timing of an engine is stored as a startup-timing water temperature. During an idling state generated after a cold start, a retard amount (S) is calculated based on the startup-timing water temperature. At this time, the retard amount (S) is set at a larger level as the startup-timing water temperature becomes higher. However, in a case that the startup-timing water temperature is higher than a predetermined temperature, the retard amount (S) is set at a smaller level as the startup-timing water temperature becomes higher. A retard amount (R) is calculated based on a current water temperature in the same manner as the retard amount (S). A smaller one is selected from the retard amount (S) and the retard amount (R), as a basic retard amount.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 26, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Kazuki Iijima
  • Patent number: 9200576
    Abstract: A control device for a vehicle configured to automatically stop an engine while the vehicle is running, the control device includes: an engine stop request outputted in accordance with an operation of a driver, and an engine stop prohibition request outputted based on a driving state of the vehicle which are independent requests, the higher-priority engine stop request being preferentially performed when both the requests are simultaneously outputted, and the engine stop prohibition request being withdrawn when the engine stop is performed by the higher-priority engine stop request.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 1, 2015
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Kazuki Iijima
  • Publication number: 20150088405
    Abstract: A control device for a vehicle configured to automatically stop an engine while the vehicle is running, the control device includes: an engine stop request outputted in accordance with an operation of a driver, and an engine stop prohibition request outputted based on a driving state of the vehicle which are independent requests, the higher-priority engine stop request being preferentially performed when both the requests are simultaneously outputted, and the engine stop prohibition request being withdrawn when the engine stop is performed by the higher-priority engine stop request.
    Type: Application
    Filed: March 12, 2013
    Publication date: March 26, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Kazuki Iijima
  • Publication number: 20150059697
    Abstract: A water temperature indicated at a startup timing of an engine is stored as a startup-timing water temperature. During an idling state generated after a cold start, a retard amount (S) is calculated based on the startup-timing water temperature. At this time, the retard amount (S) is set at a larger level as the startup-timing water temperature becomes higher. However, in a case that the startup-timing water temperature is higher than a predetermined temperature, the retard amount (S) is set at a smaller level as the startup-timing water temperature becomes higher. A retard amount (R) is calculated based on a current water temperature in the same manner as the retard amount (S). A smaller one is selected from the retard amount (S) and the retard amount (R), as a basic retard amount.
    Type: Application
    Filed: March 12, 2013
    Publication date: March 5, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Kazuki Iijima