Patents Assigned to Mazda Motor Corporation
  • Publication number: 20210290128
    Abstract: A state of a user of a mobile terminal having a display for displaying an image maybe estimated. A sightline detector detects a sightline of the user of a mobile terminal and processing circuitry is configured to estimate a state of the user. The processing circuitry is configured to determine a top-down index value that is correlated with an attention source amount allocated to top-down attention of the user with respect to an image displayed on a display of the mobile terminal. The processing circuitry is configured to determine a bottom-up index value correlated with the attention source amount allocated to bottom-up attention of the user with respect to the image displayed on the display. The processing circuitry is configured to estimate the user state including an attention function degraded state based on the top-down index value and the bottom-up index value.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Kazuo SAKAMOTO, Akihide TAKAMI
  • Publication number: 20210290129
    Abstract: A state of a user of a mobile terminal having a display for displaying an image may be estimated. A sightline detection detector detects a user's sightline of a mobile terminal that has a display for displaying an image. Processing circuitry is configured to estimate a state of the user including an attention function degraded state based on motion of the user's sightline with respect to the image displayed on the display of the mobile terminal.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Kazuo SAKAMOTO, Akihide TAKAMI
  • Publication number: 20210291893
    Abstract: Vibration is appropriately produced for a steering wheel in a power steering apparatus in which restriction is placed on a torque generated by a motor. In response to establishment of a predetermined condition, an electrical control unit (ECU) which controls actuation of a motor sets a vibration torque for vibrating a steering wheel, sets a summed value of an assist torque and the vibration torque as a target torque, and controls the motor such that the target torque is generated. In addition, when the predetermined condition is not satisfied and the target torque is the predetermined first restriction torque or greater, the ECU restricts a maximum value of the target torque to a first restriction torque, and when the predetermined condition is satisfied, the ECU changes the restriction on the maximum value of the target torque.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tetsuya NOZAWA, Kenta TADA
  • Patent number: 11124249
    Abstract: A deflector structure of an automotive vehicle comprises a deflector. The deflector comprises a traveling-wind control part to control a flow of a traveling wind generated in forward traveling of an automotive vehicle. The traveling-wind control part comprises an outside control section and an inside control section. The outside control section and the inside control section are shaped such that an atmospheric pressure of an outside space portion which is positioned just in front of an outside part, in the vehicle width direction, of a front wheel is lower than that of a central space portion which is positioned just in front of a central part, in the vehicle width direction, of the front wheel at a level position from a lower end of the deflator to a vicinity below the lower end of the deflector.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: September 21, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Shuhei Nishida, Yoshiatsu Kuga, Akihiro Nakata
  • Publication number: 20210282988
    Abstract: The wheelchair includes a pair of body frames and, wheels, cross bars, and a seating portion. The wheels are supported rotatably with respect to the pair of body frames by the pair of body frames. The cross bars are provided so as to extend in the Y-direction across the pair of body frames. The seating portion is attached to the pair of body frames and is the portion on which the wheelchair user sits. In the wheelchair, the body frame and the body frame are movable in the longitudinal direction of the cross bars, respectively. The distance between the body frame and the body frame can be changed by moving the body frames in the longitudinal direction of the cross bars.
    Type: Application
    Filed: February 17, 2021
    Publication date: September 16, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Takashi IWASE, Isao TODA
  • Publication number: 20210282992
    Abstract: A wheelchair includes a seating portion on which a wheelchair user sits, a body frame that supports the seating portion, a pair of rear wheels and a pair of front wheels rotatably supported by the body frame, and a seat back portion capable of changing the inclination angle with respect to the seating portion. The wheelchair includes push-along handle portions as engaging portions capable of fixing the seat back portion to a side sill as a vehicle body member that forms a door opening of the vehicle when the seat back portion is tilted backward of the wheelchair.
    Type: Application
    Filed: February 12, 2021
    Publication date: September 16, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Takashi IWASE, Isao TODA
  • Publication number: 20210282989
    Abstract: The wheelchair includes a seating portion, body frames that support the seating portion, wheels that are rotatably supported by the body frames, an engaging portion, a left brake that brakes a left rear wheel, and a coupling portion that couples the engaging portion and the left brake to each other. The engaging portion is capable of switching between an engagement attitude for engaging a vehicle body member that forms an opening of a vehicle and a disengagement attitude for releasing the engagement with the vehicle body member. The coupling portion transmits the movement of the engaging portion to the left brake when the engaging portion makes an attitude change from the disengagement attitude to the engagement attitude. This operates the left brake when the attitude of the engaging portion switches from the disengagement attitude to the engagement attitude and brakes the left rear wheel.
    Type: Application
    Filed: February 12, 2021
    Publication date: September 16, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Takashi IWASE, Isao TODA, Akira YASUTAKE, Tsuyoshi ARINAGA
  • Patent number: 11118546
    Abstract: An intake passage includes: a main intake passage provided with a throttle valve and extending from one side toward the other side along a cylinder bank; and a bypass passage provided with an EGR valve and connected to a part of the main intake passage located toward the other side with respect to the throttle valve. The bypass passage extends from a branch of the main intake passage toward the one side and then turns back and extends toward the other side. The EGR valve is located in a part of the bypass passage extending toward the other side and overlapping with a part extending from the branch to the one side.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: September 14, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Ken Yoshida, Masahiko Tanisho, Nozomu Hachiya, Kouichi Shimizu, Manabu Sugimoto
  • Patent number: 11118528
    Abstract: A fuel injection control device for an engine is provided. A fuel injector with multiple nozzle holes forms a lean mixture gas inside a combustion chamber, a spark plug ignites to cause the mixture gas to start combustion accompanied by flame propagation, then combust by self-ignition. A first atomized fuel spray injected from a first nozzle hole and a second atomized fuel spray injected from a second nozzle hole separate from each other by a swirl flow, and a third atomized fuel spray injected from a third nozzle hole and a fourth atomized fuel spray from a fourth nozzle hole approach each other by the swirl flow so that a first area and a second area where mixture gas is richer are formed inside the combustion chamber. The fuel injector sequentially performs first, second, and third injections with an injection interval therebetween in an intake stroke.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: September 14, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takuya Ohura, Tomohiro Nishida, Michiharu Kawano, Yuya Honda, Tota Tanii
  • Patent number: 11118531
    Abstract: An engine control device is provided. A fuel injection valve performs a pre-injection and a main injection on a retarding side of the pre-injection so that pressure waves resulting from combustions caused by the injections cancel each other out. The control device secures a fuel injection amount to be supplied to a combustion chamber in one cycle by at least the pre-injection, the main injection, and a middle injection. The control device causes the fuel injection valve to perform the pre-injection at a timing when a piston is located at an advancing side of compression top dead center for premix combustion, to start the main injection during a combustion period of the fuel injected by the pre-injection for diffuse combustion, and to perform the middle injection at a timing between the other two injections with a fuel injection amount less than the other injections.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 14, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takeru Matsuo, Yoshie Kakuda, Sangkyu Kim, Daisuke Shimo
  • Patent number: 11118505
    Abstract: A combustion control system for an engine mounted on an automobile is provided, which includes an ignition plug, intake and exhaust passages, an EGR passage, an EGR valve, and a control device having a processor which controls the ignition plug and the EGR valve according to an engine operating state and reduces deposit being accumulated inside a combustion chamber. The control device performs a control in which an accumulating amount of the deposit is estimated, and a control in which the deposit is removed when the estimated accumulating amount becomes more than a given setting value. In the deposit removal control, a control of the ignition plug in which a mixture gas is caused to combust by igniting the mixture gas, and a control of the EGR valve in which an amount of exhaust gas introduced into the combustion chamber is decreased, are performed.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: September 14, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kenichi Nakashima, Hiroki Tanaka, Yuichiro Tsumura, Daisuke Tanaka, Taiki Maiguma
  • Patent number: 11118499
    Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface formed on a cylinder head, an injector and an ignition plug provided on the combustion chamber ceiling surface, and an intake opening and an exhaust opening opened in the combustion chamber ceiling surface. A side where the intake opening is opened is defined as an intake port side, and a side where the exhaust opening is opened is defined as an exhaust port side, with respect to a position, as a reference, where an ignition portion of the ignition plug is disposed in a plan view from one side in a cylinder axis direction, the injector is configured to inject fuel toward the exhaust port side, and a reverse squish flow generation portion, which draws an air-fuel mixture toward the intake port side, is provided in the combustion chamber.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: September 14, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Satoshi Imamura, Masaki Fukuma, Yasushi Nakahara, Atsushi Inoue, Kota Matsumoto, Yoshiharu Ueki, Michiharu Kawano, Yuya Honda, Kento Onishi
  • Patent number: 11118534
    Abstract: An engine includes an output shaft, a cylinder head, a cylinder block, and a plurality of head bolts. The cylinder block includes three or more cylinder parts, a plurality of connecting portions, a plurality of output shaft supporting parts, and a plurality of head bolt holes. A side wall face of at least one cylinder part includes a first rib. The first rib diagonally extends from the connecting portion toward a head bolt hole base.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: September 14, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kazuo Ichikawa, Yoshihisa Nou
  • Patent number: 11121651
    Abstract: Provided are a driving force control method and device for a hybrid vehicle, each capable of effectively absorbing torque fluctuation of an engine while suppressing deterioration in energy efficiency. The driving force control device for a hybrid vehicle comprises a PCM configured to: estimate an average torque output by an engine; estimate a torque fluctuation component of the torque output by the engine; set a countertorque for suppressing the estimated torque fluctuation component; and control an electric motor to output the set countertorque, wherein the PCM is operable, under a condition that an engine speed is constant, to set the countertorque such that, as the average torque output by an engine becomes larger, the absolute value of the countertorque becomes smaller.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: September 14, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Hirofumi Nishimura, Tsuyoshi Goto, Kentaro Furusho, Yuta Enokizono, Wataru Yamamoto
  • Publication number: 20210276627
    Abstract: A side vehicle body structure ensures rigidity and shock absorption performance of the body, avoids widening of the body, and smooths the flow of exhaust gas. Embodiments include an engine, an exhaust apparatus, and a rear pillar extending upward from a rear-side portion of a side sill extending in the vehicle front-rear direction. The exhaust apparatus is disposed along the vehicle front-rear direction on the vehicle-width-direction outer side relative to the side sill. An exhaust system member is located at a going-around portion, with respect to the rear pillar, from the front side to the rear side and from the outer side to the inner side in the vehicle width direction. The rear pillar has a cross section orthogonal to the vehicle up-down direction having a shape in which a portion between front and rear ends is located on the vehicle-width-direction outer side relative to these front and rear ends.
    Type: Application
    Filed: February 19, 2021
    Publication date: September 9, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tsuneki SHIMANAKA, Yukiko YAMAGUCHI
  • Publication number: 20210276625
    Abstract: An exhaust system member is provided on a vehicle-width-direction outer side relative to a vehicle body structure on the side of a floor, while avoiding widening of the vehicle and preserving small overlap collision resistance. Embodiments include an engine disposed forward of a partition wall defining a front edge of a vehicle cabin, an exhaust apparatus, a side sill extending along the vehicle front-rear direction on the side of a floor forming a floor surface of the vehicle cabin, and a hinge pillar extending vertically from the side sill. A frame member extends toward the vehicle front side from the hinge pillar and has a front end, on the rear side of a vehicle wheel, overlapping with a vehicle-width-direction length area of the wheel. The exhaust system member is in an area on the vehicle-width-direction outer side of the frame member and on the front side of the hinge pillar.
    Type: Application
    Filed: February 17, 2021
    Publication date: September 9, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tsuneki SHIMANAKA, Hiroshi TANAKA
  • Publication number: 20210276413
    Abstract: A vehicle body side structure is provided where an exhaust apparatus is located on the vehicle-width-direction outer side relative to a side sill without widening the vehicle. Embodiments include an internal combustion engine equipped on the front side of a partition wall defining a front edge of a vehicle cabin space, an exhaust apparatus through which exhaust gas exhausted from the internal combustion engine passes, and a side sill extending along the vehicle front-rear direction on the side of a floor forming a floor surface of the vehicle cabin space. The side sill has a recess having a cross section recessed toward the vehicle-width-direction inner side from the vehicle-width-direction outer side in a cross-sectional view orthogonal to the vehicle front-rear direction and extending in the vehicle front-rear direction, and an exhaust system member provided in the exhaust apparatus is disposed at the recess.
    Type: Application
    Filed: February 17, 2021
    Publication date: September 9, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tsuneki SHIMANAKA, Kota YOSHIDA
  • Publication number: 20210276569
    Abstract: A driver condition estimating device includes circuitry configured to measure movement of the head of a driver output from a driver camera that photographs the driver and detect a sign of abnormality of the driver from the movement of the head. The circuitry determines existence of the sign of abnormality of the driver by calculating a periodic feature amount from time series data showing movement of the head of the driver, calculating coherence between the movement of the head of the driver and lateral acceleration acting on the head of the driver, calculating time series variation patterns from the obtained periodic feature amount and the obtained coherence, and comparing the obtained time series variation patterns with a predetermined threshold.
    Type: Application
    Filed: November 25, 2020
    Publication date: September 9, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Makoto YOSHIDA, Taro IWAMOTO, Ken IKUHISA, Yohei IWASHITA
  • Patent number: D931173
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: September 21, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Shimpei Fujikawa, Motoaki Takekura, Kazuya Hamada, Daichi Miyata
  • Patent number: D931184
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: September 21, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Ian Hedge, Daiki Hamanaga, Junko Nakamura, Yuuki Suga, Atsuo Iwabuchi, Ryo Tsubosaka, Ayumu Tabuki, Yoshihide Hamatani