Patents Assigned to Mazda Motor Corporation
  • Patent number: 11453394
    Abstract: A control unit functionally comprises a first steering-torque application control part which commands a steering actuator of a vehicle to execute application of a steering torque determined by a first steering characteristic CH1 and a second steering-torque application control part which commands the steering actuator of the vehicle to execute application of a steering torque determined by a second steering characteristic CH2. The first steering characteristic CH1 comprises plural characteristics CH1A-CH1J which have different steering torques changing according to a vehicle speed. The characteristics CH1A-CH1J are set according to the vehicle speed such that these gradually change in a manner CH1A?CH1J as the vehicle speed becomes higher. The steering torque applied to the steering wheel is set such that the higher the vehicle speed is, the smaller the steering torque is, as shown by the characteristics CH1A-CH1J.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 27, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Rie Awane
  • Publication number: 20220297617
    Abstract: An in-vehicle network system includes a central ECU, which generates a control signal for a plurality of devices, and a plurality of zone ECUs, which relay a control signal from the central ECU. The plurality of devices include a first specific device (power window device, etc.), which is a device unrelated to drive control or the like of a vehicle, and which includes a sub controller (third signal processing unit, etc.) capable of activating an actuator based on an ON signal from at least one or some of the sensors. The first specific device is configured to control the actuator by using the sub controller in occurrence of abnormality of communication between the central ECU and the first specific device.
    Type: Application
    Filed: August 21, 2020
    Publication date: September 22, 2022
    Applicants: Mazda Motor Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshimasa KUROKAWA, Tetsuhiro YAMASHITA, Takahiro HIRANO
  • Publication number: 20220297768
    Abstract: Provided is a frame which is made of a fiber reinforced composite and where a bending strength and a vibration damping capability are compatible. The frame which is made of a fiber reinforced composite includes: a compressive wall part where a compressive stress occurs in a longitudinal direction of the frame when the frame receives a bending load in a normal direction perpendicularly intersecting the longitudinal direction; a side wall part extending in the normal direction and defining one of the corners with the compressive wall part; and a tension wall part which is away from the compressive wall part and extends in the longitudinal direction, and where a tensile stress occurs in the longitudinal direction when the frame receives the bending load. The tension wall part has a loss coefficient which is larger than a loss coefficient of the compressive wall part by 0.005 or more.
    Type: Application
    Filed: January 4, 2022
    Publication date: September 22, 2022
    Applicants: MAZDA MOTOR CORPORATION, NIPPON STEEL Chemical & Material Co., Ltd.
    Inventors: Chikara KAWAMURA, Yuki KODAMA, Kenji NISHIDA, Tetsuya SUGIYAMA, Koichi HATTORI
  • Publication number: 20220297769
    Abstract: Provided is a frame which is made of a fiber reinforced composite and has an increased bending strength by suppressing occurrence of buckling. The frame which is made of a fiber reinforced composite includes: a compressive wall part where a compressive stress occurs in a longitudinal direction of the frame when the frame receives a bending load in a normal direction perpendicularly intersecting the longitudinal direction; and a side wall part extending in the normal direction and defining one of corners with the compressive wall part. The compressive wall part includes a longitudinal alignment layer having reinforcement fibers aligned in the longitudinal direction. The side wall part has a surface section composed of a normal directional alignment layer having reinforcement fibers aligned in a direction different from the longitudinal direction, and serving as a differential alignment layer.
    Type: Application
    Filed: January 5, 2022
    Publication date: September 22, 2022
    Applicants: MAZDA MOTOR CORPORATION, NIPPON STEEL Chemical & Material Co., Ltd.
    Inventors: Chikara KAWAMURA, Tetsuya SUGIYAMA
  • Patent number: 11446998
    Abstract: A front-side cross member and a rear-side cross member in a front portion of a rear floor are spaced apart from each other, on a top side of the rear floor, ends of the front-side cross member in the vehicle width direction are connected to respective lower ends of left and right brace members extending up and down, while the rear-side cross member is disposed on the rear floor from an underside of the rear floor. A high voltage component is disposed on a top face in the front portion of the rear floor between the front and rear-side cross members, the high voltage component is disposed rearwardly spaced apart from the front-side cross member and closer to the rear-side cross member, and the high voltage component is attached to the front-side cross member via a bracket that deforms under a load in the vehicle front-rear direction.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: September 20, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yuto Kodama, Koji Yoshimura, Taichi Hirakawa, Toshihiko Kawamura, Harumitsu Kubota, Takeshi Sasabe
  • Patent number: 11446984
    Abstract: A cooling system is provided to cool fluid used in a device mounted on a vehicle, by exchanging heat with cooler cooling water in a cooler. The system includes a cooling water passage connected to the cooler and having an undercover cooling water passage provided to an undercover, a cooler radiator configured to cool the cooler cooling water by exchanging heat between the cooler cooling water and air flowing into an engine bay from a grille, a flow rate adjuster configured to adjust a flow rate of the cooler cooling water supplied the undercover cooling water passage, and a controller configured to acquire at least a pressure or a temperature of the fluid, and control the flow rate adjuster to increase the flow rate of the cooler cooling water supplied to the undercover cooling water passage based on an increase in the pressure or the temperature of the fluid.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: September 20, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Yuma Yamaga, Yusuke Koike, Takafumi Tanehira, Yusuke Mikuni, Kanichi Yamaguchi, Katsutoshi Taninaka
  • Patent number: 11448156
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be lower when an in-cylinder temperature specified by an in-cylinder temperature specification section is high than when the in-cylinder temperature is low.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: September 20, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Kota Matsumoto, Tomonori Urushihara, Keiji Maruyama, Masanari Sueoka, Ryohei Ono, Yuji Harada, Toru Miyamoto, Atsushi Inoue, Tatsuhiro Tokunaga, Takuya Ohura, Yusuke Kawai, Tomohiro Nishida, Keita Arai, Yodai Yamaguchi
  • Patent number: 11447187
    Abstract: A vehicle front structure includes, below a bonnet (6), a cover member (1) that covers an engine from an upper portion thereof to the side and is formed by an upper wall (30), a shroud (8) as a front wall, a rear wall (13), and side walls (11, 12) on the respective left and right sides. The cover member is formed by the upper wall, the front wall, the rear wall, and the side walls on the respective left and right sides. The front side of one of the left and right side walls is configured to have, relative to the rear side, a higher ratio of a low-rigidity member having lower rigidity than a high-rigidity member forming a main portion on the rear side.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: September 20, 2022
    Assignees: MAZDA MOTOR CORPORATION, DaikyoNishikawa Corporation
    Inventors: Kazumi Okamura, Motoi Aoki, Yuta Mishima, Hiroshi Mizuguchi, Daisuke Ooune, Takashi Yamashita
  • Patent number: 11447112
    Abstract: Disclosed is a vehicle attitude control system for controlling the attitude of a vehicle in which a road wheel suspension is configured such that a roll axis of a vehicle body inclines downwardly in a forward direction. The vehicle attitude control system includes: a lateral acceleration sensor operable to detect a lateral acceleration; a brake actuator operable to apply a braking force; and a brake control device operable, based on a traveling state of the vehicle, to generate the braking force, wherein the brake control device is configured to execute vehicle attitude control of applying, to an inner rear road wheel, a larger braking force when the lateral acceleration of the vehicle is relatively large than when the lateral acceleration is relatively small, thereby suppressing uplift of an inner rear portion of the vehicle body.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: September 20, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Naoki Hiraga, Daisuke Umetsu, Fuminori Kato, Hiroyuki Ogata
  • Publication number: 20220289213
    Abstract: About a central arithmetic unit in an in-vehicle network system, the configuration which can easily correspond to a wide range of vehicle types and grades is provided. The central arithmetic unit (10) provided in the in-vehicle network system includes a main function calculation unit (11) for realizing main functions including at least driving assistance, and an autonomous driving calculation unit (12) for performing calculation for autonomous driving. The main function calculation unit (11) and the autonomous driving calculation unit (12) are divided into different function blocks.
    Type: Application
    Filed: August 21, 2020
    Publication date: September 15, 2022
    Applicants: Mazda Motor Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuhiro YAMASHITA, Masato ISHIBASHI, Takahiro HIRANO
  • Publication number: 20220289128
    Abstract: An in-vehicle power supply structure, in which a vehicle is divided into a plurality of zones and a power supply hub for connecting an electronic device is provided in each of the zones, includes a break detection wire routed along a power supply wire, for detecting damage to the power supply wire caused by an external force acting on the vehicle by its own damage. Both ends of the break detection wire are connected to power supply hubs placed adjacent to each other.
    Type: Application
    Filed: July 8, 2020
    Publication date: September 15, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Yoshimasa KUROKAWA, Tetsuhiro YAMASHITA, Masaaki SHIMIZU
  • Publication number: 20220288970
    Abstract: A rim portion of a vehicle wheel has an outer flange portion. In a region of the outer flange portion, a space portion between spoke portions is disposed on a radial-direction inner side, a first inclined surface and a second inclined surface are provided. The first inclined surface is provided on an axial-direction outer side of an outer flange outer circumferential portion. The second inclined surface is on an axial-direction outer side of an outer flange inner circumferential portion. The first inclined surface is formed to incline from the axial-direction outer side toward an axial-direction inner side as the first inclined surface extends from a radial-direction outer side end toward the radial-direction inner side. The second inclined surface is a surface formed to incline from the axial-direction inner side toward the axial-direction outer side as the second inclined surface extends from the radial-direction outer side toward the radial-direction inner side.
    Type: Application
    Filed: February 3, 2022
    Publication date: September 15, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Masafumi ABURAME, Satoshi OKAMOTO, Akihiro NAKATA, Haruka TANIGUCHI, Shinji MATSUO, Hiroshi KUNINARI, Takuya MATSUDA
  • Publication number: 20220295136
    Abstract: A communication management method includes: flag transmission of transmitting, to an on-vehicle communication device, identification flag information for identifying a function to be enabled among a plurality of functions of a vehicle, using a management server; port assignment of assigning different dedicated source ports for respective functions to be enabled based on the identification flag information, using the on-vehicle communication device, upon receipt of the identification flag information; and data communications for the respective functions assigned to the dedicated source ports in the port assignment via the dedicated source ports to allow a communication carrier to accumulate data traffic for the respective functions, using the on-vehicle communication device.
    Type: Application
    Filed: December 22, 2021
    Publication date: September 15, 2022
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Motoki OISHI, Satoshi NAKAO, Yoshiki MAEKAWA, Eiji OKAZAKI, Hiroshi ARIKI
  • Patent number: 11440539
    Abstract: A vehicle control device includes an oncoming vehicle detection sensor that detects an oncoming vehicle approaching an own vehicle; and a controller configured to automatically apply brakes to the own vehicle to avoid a collision with the oncoming vehicle, detected by the oncoming vehicle detection sensor, under a condition that the own vehicle is at least partially in an opposite lane or a planned path of the own vehicle is at least partially in the opposite lane. The controller is further configured to set, between the own vehicle and the oncoming vehicle, a virtual area that moves with the oncoming vehicle and that extends toward the own vehicle using a rear end of the oncoming vehicle as a base point, and automatically brake the own vehicle to avoid the own vehicle coming into contact with the virtual area to avoid the collision between the own vehicle and the oncoming vehicle.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: September 13, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Takashi Nakagami, Xi Chen
  • Patent number: 11444803
    Abstract: An in-vehicle network system includes: an upper device; a first intermediate device that is connected to the upper device directly or via at least one device and is configured to communicate with the upper device using a first communication system; a second intermediate device that is connected to the upper device directly or via at least one device and is configured to communicate with the upper device using a second communication system; and a first lower device that is directly connected to the first intermediate device and is configured to communicate with the first intermediate device using the first communication system, and that is directly connected to the second intermediate device and is configured to communicate with the second intermediate device using the second communication system.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: September 13, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
    Inventors: Takahiro Hirano, Tetsuhiro Yamashita, Yoshimasa Kurokawa
  • Patent number: 11440499
    Abstract: A side airbag device includes an inflator; and a bag-shaped airbag inflatable and deployable in response to a gas upon activation of the inflator. The airbag includes a torso protection portion inflatable and deployable in a space beside a torso of the occupant, a support portion provided on a console box side of the torso protection portion and configured to be pushed onto a top surface of the console box in an inflated and deployed state, and a hip protection portion inflatable and deployable between a hip of the occupant and a lateral portion of the console box. The support portion and the hip protection portion are defined by a continuous chamber. The inflator is positioned from above to below the support portion in a side view of the vehicle. The airbag is mounted on a lateral portion of the vehicle seat via the inflator.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: September 13, 2022
    Assignees: MAZDA MOTOR CORPORATION, ASHIMORI INDUSTRY CO., LTD.
    Inventors: Taei Shibahara, Toshihiro Takebayashi, Yuichi Sugimura, Motoharu Hirata, Hidetaka Azuma, Yuta Minami, Yoshitaka Okagami, Kazuya Hashimoto
  • Patent number: 11441680
    Abstract: A control device for an automatic transmission includes a parking lock mechanism configured to lock/unlock rotation of a power transmission shaft by setting a parking rod at locked/unlocked position when the automatic transmission is in a parking range or in other ranges, a parking drive mechanism configured to set the parking rod at the unlocked position by supplying hydraulic pressure, a hydraulic pressure control valve configured to intercept the hydraulic pressure supply to the parking drive mechanism when power is supplied thereto, and supply the pressure when power is not supplied thereto, a regulating mechanism configured to regulate the movement of the parking rod at the locked position, and a controller configured to, when the parking rod is at the locked position, maintain supply of power to the valve, while an engine speed is higher than a given value, after power of a vehicle is turned OFF.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: September 13, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Takahiro Kimura, Kenji Sawa, Yasuo Shigenaka
  • Publication number: 20220281289
    Abstract: A cowl grille comprises a member portion which extends in a vehicle width direction below a front windshield so as to receive water dripping from the front windshield, a cover portion which is positioned in front of a member portion and covers over an auxiliary equipment, a partition portion which extends downwardly from the cover portion and partitions a space where an engine is arranged from another space where the auxiliary equipment is arranged, and a cowl seal which extends in the vehicle width direction and contacts a bonnet so as to seal between a vehicle outside space and an engine room. The cowl seal is positioned at a front part of the member portion, and the cover portion is made of a plate member and provided to perform heat insulating between a space positioned above the cover portion and another space positioned below the cover portion.
    Type: Application
    Filed: November 23, 2021
    Publication date: September 8, 2022
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hosei MOGI, Atsushi NAKAMURA, Hidekazu MORIKAWA
  • Publication number: 20220281466
    Abstract: A first controller includes a plurality of computation units and a diagnosis unit. A second controller is disposed on a signal path between the first controller and an actuator, and includes an output unit. Each of the computation units supplies a first control signal for controlling the actuator to the output unit. The diagnosis unit performs an abnormal diagnosis of each of the computation units. The output unit outputs a second control signal for controlling the actuator based on the first control signals supplied from the computation units and diagnosis results of the computation units obtained by the diagnosis unit.
    Type: Application
    Filed: July 22, 2020
    Publication date: September 8, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Yoshimasa KUROKAWA, Tetsuhiro YAMASHITA
  • Publication number: 20220286321
    Abstract: A network hub device used for building a simple network configuration in an in-vehicle network system is provided. A network hub device (30) is coupled to a trunk network through which a digital control signal is transmitted via a communication port (41) and performs input/output of a signal to/from an in-vehicle device via a communication port (42 to 48). A distributing/aggregating section (51) distributes digital control signals received by the communication port (41) to a plurality of signal paths, aggregates digital control signals received via the plurality of signal paths, and transmits an aggregated signal to the communication port (41). A signal conversion section (60) is provided between one of the signal paths and a communication port (45 to 48), and one of the signal paths is coupled to the communication port (42).
    Type: Application
    Filed: July 10, 2020
    Publication date: September 8, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Yoshimasa KUROKAWA, Tetsuhiro YAMASHITA, Masaaki SHIMIZU