Patents Assigned to Mazda Motor Corporation
  • 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
  • Publication number: 20210253111
    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 and a second index value correlated with an amount of the attention source allocated to bottom-up attention of the driver are determined. The driver state including an attention function degraded state of the driver is estimated based on the first index value and the second index value. 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: 20210254567
    Abstract: A control device includes an integrated circuit configured to receive a control signal from a central computing device via a communication path, and control operation of an actuator of a rotation output device based on the received control signal. The central computing device has a memory that stores a model representing an operation pattern of the actuator. The control signal is a signal including a desired operation pattern of the actuator that is based on the model and a desired operation start time of the desired operation pattern. The integrated circuit controls the operation of the actuator using the desired operation pattern at the desired operation start time and receives a next control signal representing a next operation pattern and a next operation start time of the next operation pattern after the desired operation pattern is executed or during execution of the desired operation pattern.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Yasuhiro HARADA
  • Publication number: 20210253114
    Abstract: A controller causes a calculation device to perform calculation that determines an operation of a moving object and generates digital signals that define the operations of actuators. The generated digital signals are output to a digital signal transmission path by a signal bus control IC. ICs attached to the actuators obtain digital signals that define the operations of the actuators from the digital signal transmission path and generate control signals for the actuators based on the operations defined by the digital signals.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Yasuhiro HARADA
  • Publication number: 20210253171
    Abstract: A front vehicle-body structure is provided that allows for lower deceleration for occupants by facilitating breakage of frame members in the event of an oblique collision. Embodiments include a suspension housing formed with a suspension damper supporting portion, an upper arm supporting portion, and a lower arm supporting portion. A first frame connects an upper portion of the suspension housing and an upper portion on a vehicle-width-direction inner side of a dash panel, a second frame connects the upper portion of the suspension housing and an upper portion of a hinge pillar, and a third frame connects a lower portion of the suspension housing and a lower portion on the vehicle-width-direction inner side of the dash panel. In the event of an oblique collision, the first frame and the second frame break inward in vehicle plan view, and the third frame breaks in a Z-shape in vehicle plan view.
    Type: Application
    Filed: January 27, 2021
    Publication date: August 19, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Taiki YOTSUYANAGI, Ryo SHIMODA
  • Patent number: 11091150
    Abstract: A vehicle control device includes an engine (10), an engine control mechanism that controls an engine torque, and a PCM (50) that performs vehicle posture control for generating vehicle deceleration by controlling the engine control mechanism to reduce the engine torque upon satisfaction of a condition that a vehicle is travelling and a steering angle-related value related to a steering angle of a steering device increases. When a driver performs an accelerator operation for reducing an accelerator opening during execution of vehicle posture control, the PCM (50) suppresses reduction of a generated torque of the engine due to the accelerator operation.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: August 17, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Daisaku Ogawa, Osamu Sunahara, Yasunori Takahara, Chikako Ohisa, Yuichiro Akiya, Atsushi Yamasaki, Keiichi Hiwatashi, Daisuke Umetsu
  • Patent number: 11091205
    Abstract: A rear vehicle-body structure comprises a floor of the vehicle-body, a right-and-left rear frame extending in a vehicle longitudinal direction on both-sides of a rear of the floor, a rear cross member extending in a vehicle width direction and interconnecting a front of the right-and-left rear frame, and a right-and-left reinforcing member directly or indirectly connecting a tunnel portion provided in front of the rear cross member. The right-and-left reinforcing member is provided on the floor so as to extend forwardly and inwardly in the vehicle width direction from the rear cross member toward the tunnel portion, and respective front end portions of the right-and-left reinforcing member overlap each other and are joined to the floor.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: August 17, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hideyuki Tsukamoto, Kouji Matsushita
  • Patent number: 11092107
    Abstract: An engine combustion chamber structure includes a combustion chamber of an engine and a fuel injection valve. The fuel injection valve injects fuel toward a cavity in a crown face of a piston. The cavity includes a first cavity provided in a radially central region of the crown face with a first bottom having a first depth, a second cavity provided in an outer side of the first cavity with a second bottom having a second depth being smaller than the first depth, a connecting portion, and a standing wall region disposed further in a radially outer side than the second bottom of the second cavity. The second bottom is provided lower than an upper end, of the connecting portion. A lower section of the standing wall region is provided further in a radially inner side than an upper edge of the standing wall region.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: August 17, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Sangkyu Kim, Takashi Sumimoto, Daisuke Shimo, Tomonori Harada, Shintaro Okada, Shuji Takuma
  • Patent number: 11092108
    Abstract: A control device for a compression self-ignition engine includes a fuel injection system and an injection controller. While the engine is operated by CI combustion under a given first condition, a first injection is carried out in which fuel is injected at a first timing in a compression stroke and at which the fuel goes toward a part radially outward of a cavity formed in a crown surface of a piston, and a second injection is suspended. While the engine is operated by the CI combustion under a second condition in which a temperature inside a combustion chamber at a close timing of an intake valve becomes lower than the first condition, at least the second injection is carried out in which the fuel is injected at a second timing later than the first timing in the compression stroke and at which the fuel goes toward the cavity.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: August 17, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Naoya Ito, Takashi Kaminaga, Kenji Uchida, Tatsuya Fujikawa, Takashi Youso, Masahisa Yamakawa, Mitsuhiro Muto, Takuma Fujii
  • Patent number: 11092044
    Abstract: A cylinder head, where a pivot member configured to pivotably support a rocker arm is fastened with a bolt, is provided. The cylinder head includes a bottom wall part forming an inner bottom surface of a cam chamber that is a space where the rocker arm is disposed, and a side wall part forming an internal surface continuously rising from the inner bottom surface. A bolt hole into which the bolt is inserted is formed in the inner bottom surface. The side wall part has a protrusion protruding inward in the cam chamber from the internal surface at a position separated from the inner bottom surface, and a support hole configured to support the pivot member is formed in the protrusion.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: August 17, 2021
    Assignee: Mazda Motor Corporation
    Inventor: Takakazu Onishi
  • Patent number: 11091016
    Abstract: There are provided a pair of side sills, a floor panel, a pair of floor frames, a battery unit provided between the pair of floor frames, a first cross member interconnecting the pair of side sills, and a seat bracket. The seat bracket comprises a protrusion portion which partially covers an upper wall portion of the first side portion and is upwardly spaced apart from the upper wall portion of the first cross member, and the bead portions and the opening portion (low-rigidity portion) are formed at a part of the upper wall portion of the first cross member which is located at a position corresponding to the protrusion portion.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: August 17, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yamato Matsuda, Nobuyuki Nakayama, Katsuhito Kouno, Toshihiro Takebayashi, Toshiyuki Koga
  • Publication number: 20210245292
    Abstract: To accurately make a dressing quality determination based on resistance waveforms, a dressing quality determination method determines the quality of dressing performed for electrodes when resistance welding is performed at a plurality of welding points. This method includes accumulating a known resistance waveform immediately after dressing the electrodes, and a known resistance waveform immediately before dressing the electrodes; creating, by a statistical method, a model for setting a threshold value for dressing quality determination, based on a plurality of known resistance waveforms immediately after dressing and a plurality of known resistance waveforms immediately before dressing; acquiring an unknown resistance waveform immediately after dressing the electrodes; and determining whether dressing is normal or dressing is abnormal by comparing the unknown resistance waveform immediately after dressing with the threshold value for dressing quality determination.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 12, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yosuke MAEDA, Daisuke NAKAZAKI, Akira NAWAHARA