Patents Assigned to Mazda Motor Corporation
  • Publication number: 20210325295
    Abstract: An anticorrosion test method for a coated metallic material may include: a preparation step of adding an artificial flaw at two positions of the coated metallic material; a first measurement step of measuring a size of the artificial flaw; a connection step of electrically connecting the artificial flaws at the two positions by an external circuit via water-containing materials; an energization step of energizing a steel sheet to produce a bulge of an electrodeposition coating film; a second measurement step of measuring size of the bulge of the electrodeposition coating film; a calculation step of calculating a degree of progress of corrosion of the coated metallic material; and a correction step of correcting the degree of the progress of the corrosion.
    Type: Application
    Filed: March 12, 2021
    Publication date: October 21, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Teruaki ASADA, Katsunobu SASAKI, Tsutomu SHIGENAGA
  • Publication number: 20210323567
    Abstract: A vehicle control system has an in-vehicle camera that monitors a state of the driver; a meter device provided in front of a driver's seat; a center display provided at a substantially central position in a vehicle width direction; and a controller that executes automatic stop control when the driver abnormality is determined. The controller does not cause the meter device to show options for selecting execution or discontinuation of the automatic stop control by operating a center console operation device, but causes the meter device to at least show information that notifies of the driver abnormality and/or that notifies of the execution of the automatic stop control. Meanwhile, the controller causes the center display to at least show information having content similar to the information shown on the meter device, and causes the center display to show the options for selecting execution or discontinuation of the automatic stop control.
    Type: Application
    Filed: March 17, 2021
    Publication date: October 21, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Akira KAINO, Yoshitaka FUJIHARA
  • Patent number: 11149847
    Abstract: A power transmission device in an automatic transmission includes a friction tightening element (a second brake) having a drum member, and a transmission path constituent member (a third ring gear) coupled to the drum member via a coupling part extending circumferentially along the drum member, the drum member having low-rigidity parts (long holes) provided at a plurality of circumferential positions on the drum member in at least one of portions radially outside and inside the coupling part.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: October 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Masanori Sasaki, Masamichi Fujikawa, Kazuhiro Yamada, Kensuke Ueda, Sayaka Katayama, Yasuo Miura, Takeyuki Tanaka, Hirokazu Kouno, Takashi Miyamoto, Ryohei Hanamure, Siyuan Tao
  • Patent number: 11149806
    Abstract: A control device for an automatic transmission is provided, which includes a vehicle-propelling friction engagement element configured to be engaged when a vehicle starts traveling, an other friction engagement element, a vehicle-propelling friction engagement element temperature detector configured to detect a temperature of the vehicle-propelling friction engagement element, an input torque detector configured to detect an input torque inputted into the automatic transmission, and a control unit comprising a lubricant supply control logic configured to control supply of lubricant to the vehicle-propelling friction engagement element and the other friction engagement element. The lubricant supply control logic switches the supply amount of lubricant to the vehicle-propelling friction engagement element according to the temperature of the vehicle-propelling friction engagement element, and switches the supply amount of lubricant to the another friction engagement element according to the input torque.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: October 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Tomokazu Kinoshita, Shotaro Hara, Shoji Abe, Toshiaki Shirasago
  • Patent number: 11149620
    Abstract: An exhaust device includes a first exhaust pipe, a second exhaust pipe, and a third exhaust pipe. The first exhaust pipe is comprised of a pipe member. The second exhaust pipe and the third exhaust pipe are comprised of a tubular member including a merging tubular portion and a downstream tubular portion. In the merging tubular portion, exhaust gas to be discharged from an exhaust port of the second cylinder and exhaust gas to be discharged from an exhaust port of the third cylinder are merged. The merging tubular portion is comprised of combining a plurality of plate members, at least a part of which is formed by press working. A distal end of the first exhaust pipe is disposed inside the downstream tubular portion. The downstream tubular portion is offset on the side of the first cylinder with respect to a center in a cylinder array direction.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: October 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Taku Kuramashi, Keishi Kitabatake, Hirokazu Hasegawa
  • Patent number: 11149675
    Abstract: A fuel injection control device for an engine is provided. A swirl generator generates a swirl flow inside a combustion chamber. A fuel injector with multiple nozzle holes injects fuel into the combustion chamber, and forms a lean mixture gas inside the combustion chamber. An spark plug ignites the lean mixture gas to cause a portion of the mixture gas to start combustion accompanied by flame propagation, and then combusts by self-ignition. The fuel injector has first and second nozzle holes, and a first atomized fuel spray injected from the first nozzle hole and a second atomized fuel spray injected from the second nozzle hole separate from each other by the swirl flow. The fuel injector sequentially performs a first injection and a second injection in an intake stroke. The controller makes an injection amount of the second injection greater than that of the first injection.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: October 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takuya Ohura, Tomohiro Nishida
  • Patent number: 11148727
    Abstract: To reduce the amount of intrusion into the vehicle interior at the time of a side collision and achieve weight reduction, a vehicle side body structure includes a pillar member that partitions a side part opening of a body into a front part and a rear part, and the pillar member includes an upper member made of high-tensile steel and a lower member joined to the upper member, made of high-tensile steel, and having a rigidity lower than the upper member. The upper member has a reinforcing member made of high-tensile steel with a tensile strength higher than the upper member and the lower member and the lower half of the reinforcing member are shaped to have a lower bending rigidity against bending toward the inside in the vehicle width direction, toward the lower end of the reinforcing member.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: October 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Tadashi Yamazaki, Takeshi Nakamura, Toshiyuki Gendo
  • Patent number: 11149682
    Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface, 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. An ignition portion of the ignition plug is disposed on the intake port side. The ignition plug is ignited at a timing after the piston passes a compression top dead center. The injector is disposed on the center portion, and is configured to inject fuel toward the exhaust port side. A cavity is provided on the crown surface. A reverse squish flow generation portion is provided in the combustion chamber.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: October 19, 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: 11149848
    Abstract: An automatic transmission with a brake is provided, the brake including a hub member coupled to a transmission case. The hub member includes a first hub member having a cylindrical part spline-engaged with friction plates and the transmission case, and forming a disengagement hydraulic chamber, a second hub member disposed at one side of the first hub member in the axial direction, fitted into the transmission case, and coupled to the one side of the first hub member in the axial direction by a first coupling member, and a third hub member disposed at the other side of the first hub member in the axial direction, coupled to the other side of the first hub member in the axial direction by a second coupling member, and forming an engagement hydraulic chamber. The first coupling member and the second coupling member are disposed radially inward of the disengagement hydraulic chamber.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: October 19, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Tomotaka Ishizaka, Norio Iwashita, Shota Yamakawa
  • Publication number: 20210316738
    Abstract: [Solution] A driver abnormality determination system includes circuitry configured to detect a driving operation of a driver, detect behavior of the driver's head and motion of eyeballs and/or movement of a sightline of the driver, recognize a driving scene in which the vehicle is driven; a memory that stores a sensor table of a relationship between the driving scene and detected values to be used to determine a driver abnormality; and determine the driver abnormality based on the sensor table, the driving scene, the driving operation and the behavior.
    Type: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
  • Publication number: 20210316736
    Abstract: The driver abnormality determination apparatus includes circuitry configured to detect a driver state of a driver of a vehicle, recognize a driving scene of the vehicle based on external environment information, and detect a state of an involuntary function of the driver, detect a state of a base function that serves as the basis of a driving operation by the driver, detect a state of a predictive driving function of the driver, and detect an abnormality of the driver based on the states each of the involuntary function, the base function, the predictive function, and a determination function based on a detection target item.
    Type: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
  • Publication number: 20210316717
    Abstract: A vehicle control method is applied to a vehicle 1 in which a front wheel 2 is driven by an engine 4, and the method includes a basic torque setting step of setting basic torque to be generated by the engine 4, based on an operational state of the vehicle 1; a deceleration torque setting step of setting deceleration torque, based on an increase in steering angle of a steering apparatus 5 mounted on the vehicle 1; a torque generation step of controlling the engine 4 so that torque based on the basic torque and the deceleration torque is generated; and a deceleration torque changing step of changing the deceleration torque, based on a vehicle-width-direction mounting position of a steering wheel 6 and an operation direction of the steering wheel 6 when the steering angle is increased.
    Type: Application
    Filed: September 4, 2019
    Publication date: October 14, 2021
    Applicants: MAZDA MOTOR CORPORATION, IKUTOKU GAKUEN
    Inventors: Takatoshi TSUKANO, Shohei YAMADA, Daisuke UMETSU, Fuminori KATO, Osamu SUNAHARA, Masato ABE, Makoto YAMAKADO, Yoshio KANO, Kazuki SATO
  • Publication number: 20210317482
    Abstract: A microorganism having at least one SPX gene encoding SPX protein responsive to phosphorus deficiency, and characterized in that a function of the SPX protein is decreased or lost by introducing gene mutation into the SPX gene.
    Type: Application
    Filed: September 6, 2019
    Publication date: October 14, 2021
    Applicants: HIROSHIMA UNIVERSITY, TOKYO INSTITUTE OF TECHNOLOGY, MAZDA MOTOR CORPORATION
    Inventors: Atsushi SAKAMOTO, Kumiko OKAZAKI, Takashi YAMAMOTO, Hiroyuki OHTA, Koichi HORI, Shinsuke SHIMIZU, Akihide TAKAMI, Seiji NOMURA, Fumihiko SAITO
  • Publication number: 20210316737
    Abstract: A driver abnormality determination apparatus includes circuitry configured to detect a driver state of a driver of a vehicle, detect a driving operation of the driver, detect an exertion level of an involuntary function of the driver based on the driver state, detect an exertion level of a driving function of the driver based on the driving operation; and determine driver abnormality based on the execution level of the involuntary function and the execution level of the driving function. On condition that a function level of one of the execution level of the involuntary function and the execution level of the driving function is equal to or lower than a specified determination criterion, the circuitry is configured to relax a determination criterion for the other function level.
    Type: Application
    Filed: March 11, 2021
    Publication date: October 14, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Koji IWASE, Makoto YOSHIDA, Junichiro KUWAHARA, Yohei IWASHITA
  • Publication number: 20210317805
    Abstract: An EGR system comprising at least one of an EGR cooler and an EGR valve is arranged above an intake manifold. A pair of facing surfaces which face each other with a space are provided at the EGR system attached to the intake manifold and the intake manifold. A damper plate having elasticity is arranged between these facing surfaces. The damper plate is configured to have a larger thickness than the above-described space and have a smaller Young's modulus than each of a lower-side facing-surface portion and an upper-side facing-surface portion, and the damper plate is clamped between the lower-side facing-surface portion and the upper-side facing-surface portion.
    Type: Application
    Filed: March 2, 2021
    Publication date: October 14, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Jiro KATO, Taichi MASUOKA, Yuichi TANIGUCHI, Taketoshi YAMAUCHI, Hirofumi SHINOHARA, Akito KUMAMOTO, Takashi MIYAMOTO, Tatsuhiro ISHIDA
  • Patent number: 11143293
    Abstract: A power train device for a vehicle is provided with a selector valve that is switched between a first state in which oil discharged from an electric oil pump is able to be supplied as a hydraulic fluid to an engagement hydraulic chamber of a vehicle-starting frictional engagement element, and a second state in which the oil is able to be supplied as a lubricating oil to the vehicle-starting frictional engagement element through a first lubricating oil supply circuit, depending on a magnitude of a discharge pressure of a mechanical oil pump.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: October 12, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Keitaro Kageyama, Shotaro Nagai, Takashi Ishiyama, Takuya Sugisawa
  • Patent number: 11142251
    Abstract: In an upper vehicle-body structure including: a roof side rail disposed at an upper and vehicle-width-direction outer side portion of the vehicle and including a closed cross-section extending in a vehicle front-rear direction; a pillar extending downward from an intermediate portion in the vehicle front-rear direction of the roof side rail; and a roof rail reinforcement disposed inside the intermediate portion in the vehicle front-rear direction of the roof side rail and extending in the front-rear direction, the roof rail reinforcement including front and rear ends bent toward a vehicle-width-direction outer side, the roof rail reinforcement being configured to partition a space inside the intermediate portion of the roof side rail in the vehicle front-rear direction and a vehicle width direction, the roof side rail includes a roof rail outer and a roof rail inner defining, jointly with the roof rail outer, a closed cross-section, the pillar includes a pillar outer and a pillar inner defining, jointly with
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: October 12, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Daisuke Kiyoshita, Tadashi Yamazaki, Takeshi Nakamura
  • Patent number: 11142252
    Abstract: An upper vehicle-body structure including: a pair of left and right roof side rails; strikers to which upper portions of rear doors are engaged; a second roof reinforcement that couples the roof side rails to each other at substantially same locations as the strikers; striker mounting members on which the strikers are mounted; and reinforcement members that overlap with the roof side rails from vehicle-width-direction outer sides at substantially same locations as the striker mounting members, in which the reinforcement members each have a lower end located on a vehicle upper side than a joining location between each of the striker mounting members and each of the roof side rails and are joined to the roof side rails overlapping with the reinforcement members in a vehicle up-down direction.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: October 12, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yusuke Desaki, Makoto Morimoto, Shuji Muraoka, Tomomi Nishimori
  • Patent number: 11143249
    Abstract: A driving force distribution control device mounted on a four-wheel drive vehicle is provided. A coupling mechanism controller connects a drive shaft with an auxiliary driving wheel and sets a fastening force as a first fastening force, when an increase rate in an accelerator opening becomes more than a given value and a vehicle speed is below a given first speed, and changes the fastening force from the first fastening force to a second fastening force, when a slip of at least one of main driving wheels is detected after the fastening force is set to the first fastening force, and before a given time period has lapsed from the setting of the fastening force, or before the vehicle speed becomes faster than a given second speed. The second fastening force at least immediately after the change of the fastening force is a value larger than the first fastening force.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: October 12, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Yasumasa Imamura, Naoki Nobutani, Keisuke Haruta, Daisuke Umetsu, Yasushi Yagi
  • Patent number: 11143118
    Abstract: To provide a control device for a vehicle capable of controlling the torque of a drive source so as to appropriately balance the suppression of body vibrations and the securing of a transient response during acceleration or deceleration. This control device for a vehicle includes an accelerator position sensor that detects the accelerator opening, a torque adjustment mechanism such as a throttle valve that adjusts the torque of an engine as the drive source of the vehicle, and a powertrain control module (PCM) that controls the torque adjustment mechanism based on the accelerator opening. The PCM sets the target acceleration of the vehicle based on the accelerator opening, sets the target torsion angle of the drive shaft based on the target acceleration, sets the target torque of the engine based on the target torsion, and controls the torque adjustment mechanism based on the target torque.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: October 12, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Yuichiro Yamane, Akira Tsuda, Yuki Ishiyama, Takefumi Takada, Yuto Sakasegawa, Kazuki Kawamoto, Jumpei Takeda, Hiroyuki Morioka, Shin Kato, Masahiro Nagoshi, Atsushi Yamasaki