Patents by Inventor Yoshiyuki Yamashita

Yoshiyuki Yamashita 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: 11932221
    Abstract: A system and method control an automobile by decelerating the automobile at a first deceleration using a braking mechanism in response to detecting that a parking brake switch is turned on, a second deceleration which is smaller than the first deceleration, in response to not detecting that the parking brake switch is turned on and determining that the driver is incapacitated, and a third deceleration which is smaller than the first deceleration, in response to determining that an SOS switch is turned on, detecting that the parking brake switch is changed from on to off, and not determining that the driver is incapacitated.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: March 19, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takashi Hamada, Yuma Nishijo, Kouichi Kojima, Yoshiyuki Yamashita, Shinya Kyusaka, Yuta Tsuji, Nobuhiro Nonaka, Daisuke Shimizu, Keigo Fukuda, Yasuhiro Nakashima, Taro Oike
  • Patent number: 11365671
    Abstract: A cooling device for a vehicle is provided, which includes a first coolant channel through which a first coolant for cooling an engine flows, a second coolant channel through which a second coolant for cooling a motor drive flows, and an oil channel through which oil for lubricating inside a transmission flows. The oil channel includes a first heat exchanger configured to exchange heat between the first coolant and the oil, a second heat exchanger configured to exchange heat between the second coolant and the oil, and a valve configured to adjust a first flow rate of the oil circulating through the first heat exchanger and a second flow rate of the oil circulating through the second heat exchanger.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: June 21, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Shinichi Hikitani, Naoki Nagano, Yoshiyuki Yamashita, Yukio Jo, Yuma Yamaga, Sakumi Haseto, Shunsuke Fukuda, Tatsuhiko Iwasaki, Michiyuki Miura, Aoi Oizumi
  • Publication number: 20220153260
    Abstract: A controller detects partitioning lines OL and BL of a road and a road edge E based on an image taken by a camera, generates a pair of left and right virtual lines ILL and ILR that extend from the side to the front of a vehicle along the partitioning lines OL and BL, controls the steering so the vehicle travels between the left and right virtual lines ILL and ILR, moves the left virtual line ILL to a position in proximity to the road edge E and fixes the left virtual line ILL to this position, and then, moves the right virtual line ILR to a position separated from the left virtual line ILL by the width of the vehicle and fixes the right virtual line ILR to this position, and controls brakes to stop the vehicle after fixing the left and right virtual lines ILL and ILR.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 19, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Takashi HAMADA, Yuma NISHIJO, Kouichi KOJIMA, Yoshiyuki YAMASHITA, Yuta TSUJI, Hiroshi OHMURA, Takashi GOTO, Shoji HARADA, Kenta TADA, Kazuki SATO
  • Publication number: 20220105908
    Abstract: A system and method control an automobile by decelerating the automobile at a first deceleration using a braking mechanism in response to detecting that a parking brake switch is turned on, a second deceleration which is smaller than the first deceleration, in response to not detecting that the parking brake switch is turned on and determining that the driver is incapacitated, and a third deceleration which is smaller than the first deceleration, in response to determining that an SOS switch is turned on, detecting that the parking brake switch is changed from on to off, and not determining that the driver is incapacitated.
    Type: Application
    Filed: September 23, 2021
    Publication date: April 7, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Takashi HAMADA, Yuma NISHIJO, Kouichi KOJIMA, Yoshiyuki YAMASHITA, Shinya KYUSAKA, Yuta TSUJI, Nobuhiro NONAKA, Daisuke SHIMIZU, Keigo FUKUDA, Yasuhiro NAKASHIMA, Taro OIKE
  • Publication number: 20210301712
    Abstract: A cooling device for a vehicle is provided, which includes a first coolant channel through which a first coolant for cooling an engine flows, a second coolant channel through which a second coolant for cooling a motor drive flows, and an oil channel through which oil for lubricating inside a transmission flows. The oil channel includes a first heat exchanger configured to exchange heat between the first coolant and the oil, a second heat exchanger configured to exchange heat between the second coolant and the oil, and a valve configured to adjust a first flow rate of the oil circulating through the first heat exchanger and a second flow rate of the oil circulating through the second heat exchanger.
    Type: Application
    Filed: February 9, 2021
    Publication date: September 30, 2021
    Inventors: Shinichi Hikitani, Naoki Nagano, Yoshiyuki Yamashita, Yukio Jo, Yuma Yamaga, Sakumi Haseto, Shunsuke Fukuda, Tatsuhiko Iwasaki, Michiyuki Miura, Aoi Oizumi
  • Publication number: 20210301768
    Abstract: A cooling device for a vehicle is provided, which includes an engine having an exhaust gas recirculation (EGR) system, a supercharger, and an intercooler configured to cool intake gas containing EGR gas. The device includes a coolant channel through which coolant for cooling a motor drive flows, the coolant channel having a first channel through which a first coolant for cooling a high-voltage component of the motor drive flows and a second channel through which a second coolant for cooling the intercooler flows, the second channel being branched from the first channel. The device includes a valve provided to the second channel of the coolant channel and configured to adjust a flow rate of the second coolant.
    Type: Application
    Filed: February 10, 2021
    Publication date: September 30, 2021
    Inventors: Shinichi Hikitani, Naoki Nagano, Yoshiyuki Yamashita, Yukio Jo, Yuma Yamaga
  • Publication number: 20210170859
    Abstract: A traveling air introducing mechanism is provided to prevent foreign material from being caught by a pivot shaft portion of a flap while ensuring a large effective opening area of a frame. Embodiments include a traveling air introducing mechanism including a flap having a plate shape provided inside a frame to be rotatable between a position where the flap closes an opening and a position where the flap opens the opening. The flap includes a body having a plate shape, a pivot shaft portion, and a plate portion at the pivot shaft portion intersecting a direction in which the pivot shaft portion extends. The frame has on its inner surface an insertion hole into which the pivot shaft portion 12 is rotatably inserted. The plate portion is positioned between the inner surface of the frame and the body, and is sized to cover the insertion hole from the body side.
    Type: Application
    Filed: November 18, 2020
    Publication date: June 10, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hajime UMEHARA, Yoshiyuki YAMASHITA
  • Patent number: 10975778
    Abstract: A control device for controlling an internal combustion engine equipped with an engine body, a variable compression ratio mechanism A configured to be able to change a mechanical compression ratio of the engine body, and an intake system configured to be able to make exhaust discharged from combustion chambers of the engine body be recirculated to an intake passage of the engine body. The control device is provided with a compression ratio control part controlling the variable compression ratio mechanism A so that the mechanical compression ratio becomes the target compression ratio. The compression ratio control part sets the target compression ratio at a lower value when exhaust is being recirculated at a predetermined operating region at an engine low load side than when exhaust is not being recirculated.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: April 13, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiyuki Yamashita, Yukihiro Nakasaka, Hiroki Murata
  • Publication number: 20200338963
    Abstract: A cooling device includes: an evaporator cooling a cooling object by evaporating a heat medium in a liquid phase by a heat exchange between the cooling object and the heat medium; a condenser, disposed above the evaporator, radiating a heat of the heat medium to an external fluid by condensing the heat medium in a gas phase by a heat exchange between the heat medium and the external fluid; a gas-phase passage for guiding the gas-phase heat medium from the evaporator to the condenser; and a liquid-phase passage for guiding the liquid-phase heat medium from the condenser to the evaporator. Further, the gas-phase passage includes a rising portion on one side of the cooling device in a predetermined direction orthogonal to a vertical direction and at least a part of the rising portion rises above surroundings.
    Type: Application
    Filed: April 20, 2020
    Publication date: October 29, 2020
    Inventors: Yusuke SUZUKI, Yoshiyuki YAMASHITA, Takeshi YOSHINORI, Yasumitsu OMI, Koji MIURA
  • Patent number: 10420252
    Abstract: Provided is an electronic apparatus that makes it possible to improve a heat transfer property from a heat generating element to a heat storage material. The electronic apparatus is provided with a heat generating element and a heat storage device for storing heat generated by the heat generating element. The heat storage device includes a reaction chamber containing a heat storage material for absorbing the heat generated by the heat generating element. The reaction chamber is defined by a first surface, a second surface opposed to the first surface, and a plurality of side surfaces connecting the first surface with the second surface. In the reaction chamber, a thermal conductivity of a peripheral part is smaller than a thermal conductivity of a central part of the reaction chamber.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: September 17, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tadamasa Miura, Yoshiyuki Yamashita, Hironao Ogura
  • Patent number: 10371115
    Abstract: A control device for an internal combustion engine includes a knock control system, a cooling system, and an electronic control unit. The knock control system is configured to ignite a spark plug an ignition crank angle obtained by retarding the ignition crank angle in response to an occurrence of the knocking. The electronic control unit is configured to supply a command value corresponding to a target value of a cooling parameter to the cooling system such that the cooling system performs cooling of the internal combustion engine according to the command value. The electronic control unit is configured to correct the command value based on a KCS learned value such that as the KCS learned value increases, a correction amount for correcting the command value increases in correction amount in a direction in which a cooling capacity of the cooling system increases.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: August 6, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Kitayama, Yoshiyuki Yamashita, Yoshihiro Furuya, Hiroki Murata
  • Publication number: 20180366631
    Abstract: A thermoelectric conversion module includes a plurality of thermoelectric conversion element and a sealing member for sealing the plurality of thermoelectric conversion elements. The thermoelectric conversion element includes a plurality of first thermoelectric conversion parts and a plurality of second thermoelectric conversion parts, being alternately disposed in a Y-axial direction. At least one of an end portion of the first thermoelectric conversion part on its ?Z direction side and an end portion thereof on its +Z direction side is electrically connected to an end portion of the second thermoelectric conversion part of the adjacent other thermoelectric conversion element. The sealing member has an upper side serving as a contact surface.
    Type: Application
    Filed: August 24, 2018
    Publication date: December 20, 2018
    Inventors: Osamu Chikagawa, Sachiko Hayashi, Yoshiyuki Yamashita
  • Publication number: 20180298837
    Abstract: The control system of a vehicle comprises: a variable compression ratio mechanism A able to change a mechanical compression ratio of an internal combustion engine 2 provided in the vehicle 1, 1?, 1?; a compression ratio control part 31 configured to control the mechanical compression ratio by the variable compression ratio mechanism; and a slope detection device 41 detecting a slope of a road on which the vehicle is driving. The compression ratio control part is configured to control the mechanical compression ratio based on the slope detected by the slope detection device when fuel cut control in which feed of fuel to combustion chambers of the internal combustion engine is stopped is being performed.
    Type: Application
    Filed: April 18, 2018
    Publication date: October 18, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshiyuki YAMASHITA
  • Publication number: 20180245522
    Abstract: A control device for controlling an internal combustion engine equipped with an engine body, a variable compression ratio mechanism A configured to be able to change a mechanical compression ratio of the engine body, and an intake system configured to be able to make exhaust discharged from combustion chambers of the engine body be recirculated to an intake passage of the engine body. The control device is provided with a compression ratio control part controlling the variable compression ratio mechanism A so that the mechanical compression ratio becomes the target compression ratio. The compression ratio control part sets the target compression ratio at a lower value when exhaust is being recirculated at a predetermined operating region at an engine low load side than when exhaust is not being recirculated.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki YAMASHITA, Yukihiro NAKASAKA, Hiroki MURATA
  • Publication number: 20180023486
    Abstract: A control device of an internal combustion engine 100 provided with a compression ratio control part controlling a mechanical compression ratio to a target compression ratio. The compression ratio control part is configured provided with an optimum compression ratio calculating part calculating an optimum compression ratio in an engine operating state based on the engine operating state, a permittable changed compression ratio calculating part calculating a permittable changed compression ratio giving an effect of improvement of the fuel efficiency even considering the amount of fuel consumed by driving a motor when the optimum compression ratio is higher than a target compression ratio, and a target compression ratio changing part changing the target compression ratio to the permittable changed compression ratio if the optimum compression ratio is higher than the target compression ratio and the optimum compression ratio becomes the permittable changed compression ratio or more.
    Type: Application
    Filed: July 19, 2017
    Publication date: January 25, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshiyuki YAMASHITA
  • Publication number: 20160356257
    Abstract: A control device for an internal combustion engine includes a knock control system, a cooling system, and an electronic control unit. The knock control system is configured to ignite a spark plug an ignition crank angle obtained by retarding the ignition crank angle in response to an occurrence of the knocking. The electronic control unit is configured to supply a command value corresponding to a target value of a cooling parameter to the cooling system such that the cooling system performs cooling of the internal combustion engine according to the command value. The electronic control unit is configured to correct the command value based on a KCS learned value such that as the KCS learned value increases, a correction amount for correcting the command value increases in correction amount in a direction in which a cooling capacity of the cooling system increases.
    Type: Application
    Filed: June 3, 2016
    Publication date: December 8, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi KITAYAMA, Yoshiyuki YAMASHITA, Yoshihiro FURUYA, Hiroki MURATA
  • Publication number: 20160270252
    Abstract: Provided is an electronic apparatus that makes it possible to improve a heat transfer property from a heat generating element to a heat storage material. The electronic apparatus is provided with a heat generating element and a heat storage device for storing heat generated by the heat generating element. The heat storage device includes a reaction chamber containing a heat storage material for absorbing the heat generated by the heat generating element. The reaction chamber is defined by a first surface, a second surface opposed to the first surface, and a plurality of side surfaces connecting the first surface with the second surface. In the reaction chamber, a thermal conductivity of a peripheral part is smaller than a thermal conductivity of a central part of the reaction chamber.
    Type: Application
    Filed: May 24, 2016
    Publication date: September 15, 2016
    Inventors: Tadamasa MIURA, Yoshiyuki YAMASHITA, Hironao OGURA
  • Publication number: 20160076426
    Abstract: A heat transfer apparatus includes: an evaporating portion that evaporates a working medium by heat of an exhaust gas from an internal combustion engine; a condensing portion that condenses the working medium having been evaporated; a circulation path portion that causes the working medium to circulate between the evaporating portion and the condensing portion; a heat storage member that is provided within the evaporating portion; and a supplying and collecting portion that supplies the working medium to the evaporating portion when the internal combustion engine starts, and that collects the working medium having been condensed when the internal combustion engine stops such that the working medium having been condensed does not contact with the heat storage member.
    Type: Application
    Filed: March 20, 2014
    Publication date: March 17, 2016
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichi YAMADA, Yoshiyuki YAMASHITA, Takayuki IWAKAWA
  • Publication number: 20150144295
    Abstract: There is provided an electronic apparatus having a novel means capable of suppressing temperature rise of a heat generating element. The electronic apparatus (20), which includes a heat generating element, is provided with a device (or a chemical heat pump) (10) comprising: a reaction chamber (1) containing a chemical heat storage material showing an endothermic reaction in response to heat emitted by the heat generating element (11); a condensation/evaporation chamber (3) for condensing or evaporating a condensable component produced from the endothermic reaction of the chemical heat storage material; and a communication part (5) communicating the reaction chamber (1) with the condensation/evaporation chamber (3) such that the condensable component is movable between the reaction chamber (1) and the condensation/evaporation chamber (3).
    Type: Application
    Filed: February 3, 2015
    Publication date: May 28, 2015
    Inventors: Tadamasa MIURA, Yoshiyuki YAMASHITA, Hironao OGURA
  • Patent number: 8794055
    Abstract: An abnormality detection apparatus for a Rankine cycle system includes: a gas-liquid separator that separates a cooling medium that circulates in an internal combustion engine into a gas-phase and a liquid-phase; a superheater that gives waste heat of the engine to the cooling medium; a waste heat recoverer that recovers energy of waste heat of the cooling medium; a valve provided in a passageway; a liquid surface sensor that detects liquid surface level of the liquid-phase cooling medium in the gas-liquid separator; a vapor temperature sensor that detects temperature of the gas-phase cooling medium in the superheater; and an ECU that determines whether the valve is abnormal on the basis of the amount of the liquid-phase cooling medium and the temperature of the gas-phase cooling medium if abnormality of the cooling medium supply portion of the engine is not detected.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: August 5, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshiyuki Yamashita