Patents Assigned to Mazda Motor Corporation
  • Patent number: 10737633
    Abstract: A vehicle sound effect generation apparatus includes a running state detecting unit that detects a running state of a vehicle; a lateral input amount setting unit that sets, based on the running state detected by the running state detecting unit, a lateral input amount in which a physical amount relating to at least one of a movement of the vehicle in a width direction and a movement of the vehicle in a turning direction is a parameter; an adjustment wave sound selector that selects one or more integer-order adjustment wave sounds having an integer-order frequency component, based on the lateral input amount; and a sound effect generation unit that synthesizes a fundamental wave sound having a fundamental frequency component with the one or more integer-order adjustment wave sounds selected.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: August 11, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Tadayuki Niibe, Naoki Yamada
  • Publication number: 20200247253
    Abstract: A vehicle power supply system configured to be charged by an electric vehicle (EV) charging station that performs charging with a voltage equal to or more than a predetermined lower limit voltage. The vehicle power supply system includes a battery having a rated voltage lower than the lower limit voltage; a capacitor electrically connected in series to the battery, wherein a sum of the rated voltage of the battery and a rated voltage of the capacitor is greater than the first voltage; and an interface configured to receive electric power from the EV charging station. The vehicle power supply system also includes circuitry configured to receive electric power from the EV charging station, and charge the battery and the capacitor using the received electric power.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 6, 2020
    Applicant: Mazda Motor Corporation
    Inventors: Akihiro FURUKAWA, Seiyo HIRANO, Hideki SANAI
  • Publication number: 20200247340
    Abstract: A vehicle power supply system configured to be installed in a vehicle. The vehicle power supply system includes a battery having a rated voltage lower than a first voltage; a capacitor having a rated voltage higher than the first voltage; circuitry configured to discharge electric charge stored in the capacitor; and a controller configured to control the circuitry to charge the battery by discharging the electric charge stored in the capacitor in response to detection of a collision of the vehicle or detection of a process to replace the capacitor.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 6, 2020
    Applicant: Mazda Motor Corporation
    Inventors: Akihiro FURUKAWA, Seiyo HIRANO, Hideki SANAI
  • Publication number: 20200251083
    Abstract: A vehicle sound control device includes: a motor rotation speed detector (2) configured to detect the rotation speed of a motor that drives a vehicle; a speaker (4) configured to produce a vehicle interior sound including a motor sound changing in accordance with the rotation speed of the motor in an interior of the vehicle; an emphasizing order setting unit (6) configured to determine an order component to be emphasized in the motor sound in accordance with the rotation speed detected by the motor rotation speed detector (2); and a vehicle interior sound control unit (7) configured to control the vehicle interior sound produced by the speaker (4) so that the emphasizing order component determined by the emphasizing order setting unit (6) is emphasized. The emphasizing order setting unit (6) determines the order component to be emphasized so that a higher order component is emphasized as the rotation speed increases.
    Type: Application
    Filed: October 4, 2018
    Publication date: August 6, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Naohisa UESUGI, Yasuhiko MIURA
  • Patent number: 10731601
    Abstract: A cylinder head cover structure for an engine includes a cylinder head cover. The cylinder head cover includes a metal cover member forming one end of the cylinder head cover in an engine length direction and a portion adjacent to the one end, and a resin cover member forming a portion of the cylinder head cover other than the metal cover member. The metal cover member is provided with a cam angle sensor attachment to which a cam angle sensor is attached, the cam angle sensor detecting a rotational position of a camshaft of the engine.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: August 4, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Takashi Kashiwabara, Suguru Fukui
  • Patent number: 10730564
    Abstract: A recessed portion is formed at a lower face of a frame member provided at a vehicle rear portion and having a closed cross section extending in a vehicle longitudinal direction, where a damper of a rear suspension is inserted into and fixed. A front portion of the frame member is joined to a side sill extending in the vehicle longitudinal direction at a position offset outwardly from the frame member. Branch-shaped closed cross sections branching off from the closed cross section inwardly and outwardly relative to the damper are formed at a recessed-portion corresponding position. A front portion of the frame member located in front of the recessed-portion corresponding position extends in an oblique direction forwardly and outwardly and a front end of the frame member is joined to a rear portion of the side sill.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 4, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hideyuki Tsukamoto, Ken Yamada, Akiyoshi Masuda, Hidenori Matsuoka
  • Patent number: 10731547
    Abstract: A smooth shift is achieved between an operating region in which a first turbocharger is mainly operated and an operating region in which a second turbocharger is mainly operated. A PCM controls a throttle valve to use a first supercharging region in which a gas flow through an exhaust bypass passage is reduced and a second supercharging region in which the gas flow through the exhaust bypass passage is promoted differently based on the operating state of an engine. In an early stage of a shift from the first supercharging region to the second supercharging region, the PCM executes bridge control to allow the flow velocity of exhaust gas flowing into a large turbine to be higher than at a point in time at which the shift starts.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: August 4, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Minamoto, Nobuo Yunoki, Kenichiro Suzuki
  • Patent number: 10730567
    Abstract: A recessed portion is formed at a frame member provided at a rear portion of a vehicle body and having a closed cross section extending in a vehicle longitudinal direction such that a part of a lower face of the frame member is recessed upwardly, where a damper of a rear suspension is inserted and fixed. Closed cross sections are formed at a position corresponding to the recessed portion, in a longitudinal direction, of the frame member. The closed cross sections are configured to branch off from the closed cross section inwardly and outwardly in the vehicle width direction relative to the damper. A ridgeline extending in the vehicle longitudinal direction is formed at least at a portion of the frame member which is positioned in front of the recessed portion.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: August 4, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hideyuki Tsukamoto, Ken Yamada, Akiyoshi Masuda, Hidenori Matsuoka, Koji Matsushita
  • Patent number: 10731589
    Abstract: A control device for an on-board compression-ignition engine in which partial compression-ignition combustion including spark ignition (SI) combustion performed by combusting a portion of mixture gas inside a cylinder by spark ignition followed by compression ignition (CI) combustion performed by causing the rest of the mixture gas inside the cylinder to self-ignite is executed within at least a part of an operating range of the engine, is provided. The device includes a detector configured to detect a parameter related to noise caused by the combustion inside the cylinder, and a combustion controller configured to control the combustion inside the cylinder during the partial compression-ignition combustion based on a combustion noise index value identified by the detected parameter of the detector and a given reference value defined as an upper limit of the combustion noise index value, the reference value increasing as a vehicle speed increases.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: August 4, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Daisuke Tanaka, Taichi Masuoka
  • Patent number: 10730558
    Abstract: A front vehicle-body structure of a vehicle, comprising a dash panel, a pair of right-and-left hinge pillars, a suspension tower, and a heat-insulating inner upper portion connecting the suspension tower and the dash panel, wherein the dash panel comprises a dash panel body, a dash cross member interconnecting respective lower portions of the hinge pillars, and a dash-panel reinforcing member joined to a portion which is positioned above the dash cross member, the heat-insulating inner upper portion is connected to the dash panel body via the dash-panel reinforcing member, and the dash-panel reinforcing member comprises a leg portion which connects the heat-insulating inner upper portion and the dash cross member and a bridge portion which interconnects respective rear ends of the heat-insulating inner upper portions.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: August 4, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kazuki Yamauchi, Hidenori Matsuoka, Kuniyoshi Tashiro
  • Patent number: 10731590
    Abstract: A compression-ignition engine control system is provided, which includes an intake phase-variable mechanism and a controller. Within a first operating range and a second operating range on a higher engine load side, the controller controls the variable mechanism to form a gas-fuel ratio (G/F) lean environment in which an air-fuel ratio inside a cylinder is near a stoichiometric air-fuel ratio and burnt gas remains inside the cylinder, and controls a spark plug to spark-ignite mixture gas inside the cylinder to combust in a partial compression-ignition combustion. The controller controls the variable mechanism to retard the intake valve open timing on an advancing side of TDC of an exhaust stroke, as the engine load increases within the first range, and advance the intake valve close timing on a retarding side of TDC of intake stroke, as the engine load increases within the second range.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: August 4, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Keiji Maruyama, Takuya Ohura, Tomohiro Nishida, Yusuke Kawai, Tetsuya Chikada, Tatsuhiro Tokunaga
  • Publication number: 20200238585
    Abstract: An injection molding device includes an injection machine, a molding die, and a high frequency oscillation device. The injection machine injects a resin material containing a dielectric heat generating material while keeping fluidity by temperature control. The molding die includes a cavity being a channel of flow of the resin material, and a pair of electrodes, each of which faces the cavity, the pair of electrodes being disposed to sandwich the resin material therebetween in a direction crossing a direction of the flow. The high frequency oscillation device applies a high frequency alternate-current voltage to the pair of electrodes.
    Type: Application
    Filed: March 30, 2018
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hidekazu KATO, Michihisa IWAMOTO, Yasuhiro TOMINAGA, Takahiro TANAKA, Teruyuki HAMADA
  • Publication number: 20200238823
    Abstract: A vehicle system comprises an engine driving a vehicle, a front wheel and a rear wheel, a suspension device with an attachment portion to a vehicle body which is located at a higher level than a center axis of the rear wheel, an electromagnetic coupling to distribute a torque of the engine to the front wheel and the rear wheel, a steering wheel to be operated by a driver, a steering angle sensor to detect a steering angle corresponding to operation of the steering wheel, and a controller to control the engine and the electromagnetic coupling. The controller is configured to control the electromagnetic coupling such that the torque distributed to the rear wheel is decreased in accordance with returning operation of the steering wheel which is detected by the steering angle sensor.
    Type: Application
    Filed: January 24, 2020
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yasumasa IMAMURA, Naoki NOBUTANI, Daisuke UMETSU
  • Publication number: 20200238362
    Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.
    Type: Application
    Filed: January 13, 2020
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuri TAKAHASHI, Takeshi MATSUDA, Kenji NAKAMURA, Chie OKAWA, Ichirou INO, Naoyuki IRIE
  • Publication number: 20200238995
    Abstract: A vehicle system comprises an engine driving a vehicle, a front wheel and a rear wheel, a suspension device with an attachment portion to a vehicle body which is located at a higher level than a center axis of the rear wheel, an electromagnetic coupling to distribute a torque of the engine to the front wheel and the rear wheel, a steering wheel to be operated by a driver, a steering angle sensor to detect a steering angle corresponding to operation of the steering wheel, and a controller to control the engine and the electromagnetic coupling. The controller is configured to control the electromagnetic coupling such that the torque distributed to the rear wheel is increased in accordance with turning operation of the steering wheel which is detected by the steering angle sensor.
    Type: Application
    Filed: January 24, 2020
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yasumasa IMAMURA, Naoki NOBUTANI, Daisuke UMETSU
  • Publication number: 20200238980
    Abstract: Disclosed is a vehicle control device which comprises a traveling course control part 10a to update a target traveling course R, and an automatic emergency avoidance control part (10b, 10e) to execute automatic emergency avoidance control processing for automatically operating a given control system to avoid collision with an obstacle. The part 10a corrects the target traveling course R to calculate plural corrected traveling course candidates for avoiding the obstacle, and evaluates the candidates by an evaluation function J to select one of the candidates as a corrected traveling course. The part 10a generates a first request signal for allowing the vehicle 1 to travel along the corrected traveling course. The emergency avoidance course control part (10b, 10e) generates a second request signal. The vehicle control device further comprises an output control part 10d to output the first or second request signal to the given control system.
    Type: Application
    Filed: August 23, 2018
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Takashi GOTO, Hiroshi OHMURA, Kouji HOSODA, Tetsuya TACHIHATA, Takashi NAKAGAMI, Yuma NISHIJO, Yasuhiro KAWAHARA, Shota KATAYAMA
  • Publication number: 20200238921
    Abstract: Disclosed is a vehicle display system (1) for displaying an image of surroundings of a vehicle. The vehicle display system (1) includes: a display (18a) configured to display an image thereon; a camera (4, 6, 8, 10) mounted on the vehicle and configured to image surroundings of the vehicle; and a display control unit (20) configured to subject an image captured by the camera to mask processing, using a mask image (MR, MF) including a semi-transparent portion (M3, M4, M14, M16) corresponding to a vehicle body, and a portion (M8, M18, M19) corresponding to a window of the vehicle and having a transmittance lower than that of the portion corresponding to the vehicle body, to generate a masked image (D), and cause the masked image to be displayed on the display.
    Type: Application
    Filed: October 10, 2018
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yoshiaki MATSUBA, Tomonori OHTSUBO
  • Publication number: 20200238363
    Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.
    Type: Application
    Filed: January 13, 2020
    Publication date: July 30, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuri TAKAHASHI, Takeshi MATSUDA, Kenji NAKAMURA, Chie OKAWA, Ichirou INO, Naoyuki IRIE
  • Publication number: 20200231150
    Abstract: A system, method and computer program product provide vehicle driving assistance, wherein candidate travel routes for the vehicle are analyzed to identify one of the travel routes as a selected travel route. The selection includes calculating a route cost associated with directing the vehicle to ride over a center of a travel lane, for each of the candidate routes and selecting the one with the lowest cost.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 23, 2020
    Applicant: Mazda Motor Corporation
    Inventor: Hideki TAKAHASHI
  • Publication number: 20200232805
    Abstract: A system and method provide vehicle driving assistance, wherein candidate travel routes for the vehicle are analyzed to identify one of the travel routes as a selected travel route. The selection includes calculating a route cost associated with vehicle acceleration or deceleration, for each of the candidate routes and selecting the one with the lowest cost.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 23, 2020
    Applicant: Mazda Motor Corporation
    Inventor: Hideki TAKAHASHI