Patents Assigned to Mazda Motor Corporation
  • Publication number: 20210273824
    Abstract: To reduce the man-hours of software development when vehicle types are deployed an in-vehicle equipment control device includes a CPU and a memory. The CPU has an application layer, a middleware layer, and a device driver unit as software components. First communication packets on the application side and second communication packets on the device driver side are implemented in the middleware layer. The memory stores an internal mapping table that defines the connection relationships between the first communication packets and the second communication packets and an external mapping table that defines the direct communication routes between the first communication packets or the second communication packets and an in-vehicle network.
    Type: Application
    Filed: January 28, 2021
    Publication date: September 2, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Yusuke NAKAYA
  • Publication number: 20210268973
    Abstract: To reduce software development man-hours when vehicle models are developed an in-vehicle equipment controller includes a CPU and memory. The CPU has, as a software configuration, an application layer, a middleware layer, and a device driver. In the middleware layer, a first communication packet on the application side and a second communication packet on a device driver side are installed. In the middleware layer, a communication path between the application layer and the device driver is generated based on a mapping table stored in the memory.
    Type: Application
    Filed: January 28, 2021
    Publication date: September 2, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Yusuke NAKAYA
  • Patent number: 11104348
    Abstract: A line-of-sight determination unit of a vehicle alarm apparatus determines the line-of-sight direction, based on a face orientation and a pupil that are included in a captured image of a driver. A driving operation detection unit detects a requested acceleration based on an accelerator operation of the driver, or a turn-signal-lamp switch operation for activating a turn signal lamp of a vehicle. A controller sets an alarm timing, based on an output of the line-of-sight determination unit and an output of the driving operation detection unit. When the requested acceleration that is equal to or more than a predetermined acceleration, or the turn-signal-lamp switch operation is detected, the controller activates an alarm device at a timing more delayed than the alarm timing.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: August 31, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Xi Chen, Takashi Nakagami, Shota Katayama, Rie Tezuka
  • Patent number: 11105255
    Abstract: The invention is provided with 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 an expansion stroke to initiate 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 an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: August 31, 2021
    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: 11105382
    Abstract: A control system for a movable body configured to move by utilizing a motor torque generated by a drive motor, is provided. The system includes the drive motor including a rotor configured to output a rotational force and provided with a variable-magnetic-force magnet, and a stator opposing the rotor with a gap therebetween and provided with a plurality of coils. The device includes a powertrain component provided so as to be associated with the drive motor, and a controller having a magnetization controlling module configured to control magnetizing current flowing through the coils so as to change a magnetic force of the magnet. During a magnetization control in which the magnetic force of the magnet is increased by the magnetization controlling module, the controller operates the powertrain component to suppress an increase in a moving force applied to the movable body due to an increase in the motor torque.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: August 31, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Naoki Itasaka, Hirofumi Ebisumoto
  • Publication number: 20210261195
    Abstract: Provided is a suspension subframe structure that can activate a load path using an extension frame in an impact while avoiding increase in vehicle weight and also enables a suspension subframe to disengage from a vehicle body when an impact load is too large to be absorbed by the extension frame alone. The suspension subframe structure of the present invention includes a suspension subframe 110 that supports a suspension member 60 for a front wheel. The suspension subframe 110 includes: a body 111 that transmits an impact load input from a vehicle front side toward a vehicle rear side; a fixed portion 124 disposed near the body 111 and fixed to a vehicle body; and a connection portion 121 connecting the fixed portion 124 to the body 111. The connection portion 121 is provided with fragile portions 121f, 122g having a lower strength against a load in a vehicle front-rear direction than the body 111 and the fixed portion 124.
    Type: Application
    Filed: September 13, 2019
    Publication date: August 26, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hiroyuki OKAMOTO, Masaaki TANAKA, Fumihiro KUROHARA
  • Publication number: 20210261203
    Abstract: Floor panel vibration is reduced by suppressing a mode in which an entire region surrounded by a plurality of frame members in a floor panel vibrates. Vehicle-body framework members having closed cross-section structures, and a panel member to which vibration is transmitted from an engine or/and a suspension via the vehicle-body framework members are provided. The panel member includes a flange portion having a planar shape on its outer peripheral edge and to which the vehicle-body framework members are joined along the panel outer peripheral edge; a curved surface portion that is curved such that a place closer to a panel central side bulges out more to a lower side in a continuous manner from a panel-central-side edge portion of the flange portion; and a flat surface portion that extends to the panel central side from the panel-central-side edge portion of the curved surface portion in a continuous manner.
    Type: Application
    Filed: January 27, 2021
    Publication date: August 26, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kaito NAKAMURA, Miho KURATA, Sakayu TERADA
  • Publication number: 20210261194
    Abstract: There is provided a bracket which connects an apron reinforcement provided below a bonnet and an upper portion of a fender provided on an outward side, in a vehicle width direction, of the bonnet. The bracket comprises a fender fixing portion fixed to a flange portion of an upper end portion of the fender, a body portion extending downwardly from the fender fixing portion and positioned on the outward side of the apron reinforcement, and an apron-reinforcement fixing portion extending from an inward side, in the vehicle width direction, of the body portion toward the apron reinforcement and fixed to the apron reinforcement. The body portion is provided with a curved part which is configured to be curved outwardly in the vehicle width direction.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 26, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kuniyoshi TASHIRO, Shigeaki WATANABE, Ryuichi TAKAHASHI, Masatoki KITO, Susumu KURODA, Reiko YOSHIURA, Tomohiro SHIMADA, Kazumichi TAKESHIGE, Qiang WANG, Toshihiro NAKAZA, Satoru EGUCHI, Hayato MIYAZAKI
  • Publication number: 20210260993
    Abstract: A protection measure for a vehicle during a side collision is provided, and an oil feeding pipe is attached to a side face of a tank. A vehicle tank structure has a pair of left and right rear frames extending in the vehicle front-rear direction, a floor panel coupling the rear frames, and a tank provided below the floor panel. A side face part of the tank includes a connection port to which an oil feeding pipe is connected, the side face part being directed toward the vehicle-width-direction outer side. A hit-first face part located on the vehicle-width-direction outer side relative to a distal end of the connection port is located above a mounting face part at which the connection port is provided.
    Type: Application
    Filed: January 27, 2021
    Publication date: August 26, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Tsuyoshi ITO, Kenichiro ARAKI
  • Publication number: 20210260959
    Abstract: Coolant flowing from a compressor passes through a heat exchanger and opening-degree adjustable type of expansion valves for heating, and an external heat exchanger. The coolant passing through the external heat exchanger is capable of passing through an expansion valve and a heat exchanger for cooling, and an expansion valve and a heat exchanger for cooling a battery. A grille shutter to change an introduction state of traveling air is provided in front of the external heat exchanger. When pressure of the coolant (particularly, pressure of the coolant at a timing after the coolant passes through the external heat exchanger) is a specified pressure or lower, the grille shutter is closed, whereby the heat-exchange performance of the external heat exchanger is lowered.
    Type: Application
    Filed: December 30, 2020
    Publication date: August 26, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yasuhiko NAKAHARA, Masaaki TANAKA, Taiki SHIGEMORI, Masaki NISHINO
  • Patent number: 11100340
    Abstract: A line detector apparatus and method on a vehicle for detecting a line on a road with a higher degree of accuracy. The vehicle includes front, right-side and left-side image capturing sensors mounted on a vehicle and respectively capture an image, including a road surface, at the front and right and left sides of the vehicle to respectively generate front, right-side and left-side images. The line detector includes a processor that calculates a line on a road as a first line from the front image, the line on the road as a second line from the right-side image, and the line on the road as a third line from the left-side image. The processor selects one of multiple mutually-different algorithms based on the first to third lines, and calculates the line on the road based on the first to third lines by using the selected algorithm.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 24, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Junki Tamaru, Takayuki Moritani, Hiroyuki Ueda, Hideaki Tamazumi, Yoshihiro Yamamoto
  • Patent number: 11097787
    Abstract: A lower vehicle-body structure allows miniaturization of an undercover and prevents an increase in minimum ground clearance. In the lower vehicle-body structure, a vehicle body floor includes step-up portions connected to a floor tunnel on opposite sides of the floor tunnel in a vehicle width direction at least in regions where first and second cross members are disposed on the vehicle body floor. The lower vehicle-body structure includes a mount member that faces the floor tunnel and connects the step-up portions on the opposite sides of the floor tunnel, and includes first and second undercovers that cover a lower side of the mount member so as to be continuous with a bottom surface of the vehicle body floor on outer sides of the step-up portions in the vehicle width direction.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: August 24, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Keisuke Ebisumoto, Hidenori Matsuoka, Hirotaka Natsume, Yuki Ikawa, Naohiko Kasaki, Yosuke Morikawa
  • Patent number: 11097612
    Abstract: A driving force distribution control system for a four-wheel drive vehicle is provided. The four-wheel drive vehicle uses front wheels as main driving wheels, and when a towed vehicle is coupled to a coupling part provided to a rear part of the four-wheel drive vehicle, the towed vehicle has the center of gravity position so that a downward load in a vehicle up-and-down direction is applied to the rear part of the vehicle through the coupling part. A driving force distribution control device includes a towing determination module configured to determine whether the vehicle is towing the towed vehicle, and when it is determined that the vehicle is towing the towed vehicle, a driving force distribution control device controls the driving force distributing device so that the driving force distributing amount to rear wheels becomes larger than that when the four-wheel drive vehicle is not towing the towed vehicle.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: August 24, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Yasumasa Imamura, Daisuke Umetsu, Yoichi Fujioka, Naoki Nobutani
  • Publication number: 20210253177
    Abstract: A vehicle front structure includes a dash upper panel and a grille top face portion having outside air introduction holes taking in outside air. The vehicle front structure includes a cover member covering an engine from a vehicle upper side and having a top plate rear portion opposed to the grille top face portion on a vehicle lower side throughout a predetermined range, including the outside air introduction holes, in a vehicle width direction, and a grille front face portion disposed from the grille top face portion to the top plate rear portion on a vehicle front side of the outside air introduction holes. The top plate rear portion has a shape having inclined surfaces extending from a vehicle lower side of the outside air introduction holes in the vehicle width direction, the inclined surfaces being gradually inclined to the vehicle lower side toward vehicle-width-direction outer sides.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 19, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kazuki YAMAUCHI, Satoshi KUSUMOTO, Atsushi NAKAMURA
  • Publication number: 20210253172
    Abstract: A front vehicle-body structure of a vehicle is provided that allows for lower deceleration (so-called G) for occupants in the event of an oblique collision, which involves the largest load input, while restraining a load in a shear direction from being input to connecting portions of frames. A front vehicle-body structure of a vehicle includes a suspension housing formed with a suspension damper supporting portion, an upper arm supporting portion, and a lower arm supporting portion. A plurality of frames connecting the suspension housing and a vehicle cabin structural member are provided, and at least one frame of the plurality of frames is configured to be facilitated to break in a Z-shape in vehicle plan view in the event of an oblique collision.
    Type: Application
    Filed: January 27, 2021
    Publication date: August 19, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Ryo SHIMODA, Taiki YOTSUYANAGI
  • Publication number: 20210253105
    Abstract: A vehicle driving assistance system includes a travel route generation system that acquires travel road information and obstacle information acquired by sensors and the like and generates the target travel route, on which a host vehicle travels, on a travel road. In the case where the host vehicle changes lanes, the system acquires information on the two peripheral vehicles, which exist near the host vehicle, on the change destination lane from the obstacle information, sets a target space, to which the host vehicle 1 should move, between the two peripheral vehicles on the change destination lane on the basis of this information on the two peripheral vehicles, predicts a future position of the target space on the basis of a moving speed of the target space, and generates the target travel route, on which the host vehicle travels during the lane change, on the basis of this predicted future position.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Takashi SUGANO
  • Publication number: 20210253110
    Abstract: A device, method and computer program product provide driver state estimation. A first index value correlated with an amount of an attention source allocated to top-down attention of a driver in a first area where the top-down attention of the driver is predominant and a second index value correlated with an amount of the attention source allocated to bottom-up attention of the driver in a second area where the bottom-up attention of the driver is predominant are determined. The driver state including an attention function degraded state of the driver may be estimated based on the first index value in the first area and the second index value in the second area. A vehicle being operated by the driver may be controlled in accordance with the estimated driver state.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Koji IWASE
  • Publication number: 20210253106
    Abstract: A vehicle driving assistance system includes a travel route generation system that acquires travel road information and obstacle information acquired by sensor(s), and generates the target travel route, on which a host vehicle travels, on a travel road. When the host vehicle changes lanes, the system acquires information on three peripheral vehicles, which exist near the host vehicle, on a change destination lane from the obstacle information, sets a target space, to which the host vehicle 1 should move, between two each of the three peripheral vehicles on the change destination lane based on this information on the three peripheral vehicles, predicts a change in size of each of the target spaces, and generates the target travel route, on which the host vehicle travels during the lane change, on the basis of this predicted change in the size of each of the target spaces.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Takashi SUGANO
  • Publication number: 20210255631
    Abstract: A vehicle driving assistance system including a travel route generation system has an ECU that acquires travel road information and obstacle information acquired by a camera, a radar, and the like and generates the target travel route, on which the vehicle 1 travels, on a travel road. The ECU generates a guide line on the basis of the travel road information, generates an avoidance line on the basis of the obstacle information, and generates the target travel route on the basis of the guide line and the avoidance line. The guide line is a reference travel line for guiding a vehicle on the travel road. The avoidance line is a travel line for the vehicle to avoid an obstacle. Then, the ECU sets a first calculation cycle for generating the guide line to be longer than a second calculation cycle for generating the avoidance line.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Takashi SUGANO
  • Patent number: D929257
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: August 31, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Youichi Matsuda, Yusuke Nakamura, Ichiro Sakai, Yohei Kusamoto, Kazuhisa Noda, Kazuya Hamada, Daichi Miyata