Patents Assigned to Mazda Motor Corporation
  • Patent number: 10745031
    Abstract: To provide an alarm system for a vehicle that can reduce alarms that can irritate a driver. An alarm system 1 for a vehicle includes a determination and alarm part 52 that determines whether or not an object will cross a right alarm line 61 or a left alarm line 62 within a predetermined time and activates an alarm unit when it is determined that the object will cross the alarm line within the predetermined time. When the relative velocity of the object with respect to the right alarm line 61 or the left alarm line 62 is decreasing, the determination and alarm part 52 performs an alarm reduction control to reduce operation of the alarm unit compared with when the relative velocity is not decreasing.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: August 18, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yuki Yoshida, Koji Hirai
  • Patent number: 10744874
    Abstract: A vehicle, such as a hybrid vehicle, according to one aspect of the present invention is configured such that: a propeller shaft rotated by an engine is arranged so as to extend in a vehicle body front-rear direction; a drive gear provided at a rear end portion of the propeller shaft and a driven gear configured to rotate together with a differential case of a differential device mesh with each other; a motor or a generator is connected to the differential case so as to transmit power to the differential case; the motor or the generator is arranged at one of vehicle width direction right and left sides of an axis of the propeller shaft; and the differential case is arranged at the other of the vehicle width direction right and left sides of the axis of the propeller shaft.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: August 18, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Seiji Hidaka, Eiji Mito, Tomoo Sawazaki, Hideo Toyota
  • Patent number: 10750472
    Abstract: There are provided: a first communication device; a second communication device that communicates wirelessly with the first communication device; and a state detector that outputs state data indicating a state of a predetermined installation place. The first communication device includes: a storage; and a data controller that selectively executes a transmitting operation to transmit the state data to the second communication device and a storing operation to store the state data in the storage. The second communication device includes a signal generator that generates a stop notification signal notifying that the second communication device in operation stops an operation, and stops the operation after transmitting the stop notification signal to the first communication device.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: August 18, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Katsuhiro Fukuda, Takakazu Yamane, Yuki Odagawa
  • Patent number: 10744939
    Abstract: To provide an alarm system for a vehicle that can reduce alarms that can irritate a driver. An alarm system 1 for a vehicle includes an alarm line setting part 51 that sets a right alarm line 61 and a left alarm line 62 in front of a vehicle 2, and an alarm unit control part 55 that activates a speaker 41 and a display 42 when the velocity of the vehicle 2 is equal to or less than a predetermined velocity and a collision determination part 53 determines that an object will cross the right alarm line 61 or the left alarm line 62 within a predetermined time. When the vehicle 2 is decelerating, the alarm unit control part 55 performs an alarm reduction control that suppresses operation of the speaker 41 compared with when the vehicle 2 is not decelerating.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: August 18, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Toshiki Yoshihara, Yoshitsugu Hanada, Kazuhito Hayashi, Koji Kagami, Hiromichi Nomura, Kazuya Maruoka, Yuki Okamoto, Yuki Yoshida
  • Patent number: 10744972
    Abstract: A pedestrian protecting device that includes a right air bag device, a left air bag device, G sensors, and an ECU. The air bags include respective tip end portions which vertically overlap each other at a middle portion of a vehicle when the air bags are deployed. The ECU executes a time difference deployment control operation of: when a pedestrian collision position is located at a left side of the middle portion of the vehicle, operating the air bag devices such that a deployment of the right air bag is completed before a deployment of the left air bag is completed; and when the collision position is located at a right side of the middle portion of the vehicle, operating the air bag devices such that the deployment of the left air bag is completed before the deployment of the right air bag is completed.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: August 18, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Ryouji Funahashi, Tsutomu Watanabe, Susumu Kuroda, Motoharu Sato, Yuji Nakanishi
  • Patent number: 10745051
    Abstract: A rear subframe structure is provided with a rear subframe configured such that a front cross member, a rear cross member, a pair of left and right upper side members extending in a vehicle front-rear direction, and a pair of left and right lower side members extending in the vehicle front-rear direction are connected; and a vehicle-body mounting portion formed on each of both ends of the front cross member in the vehicle width direction, and on each of rear ends of the upper side members. The rear subframe further includes a lower-arm support portion formed on a lower lateral portion of the rear cross member, and a stabilizer support member for supporting a stabilizer. The rear cross member connects the upper side members and the lower side members in an up-down direction. The rear cross member includes an upper-surface rear-side projection portion projecting rearwardly.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: August 18, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Masaaki Tanaka, Katsuyuki Komiya
  • Patent number: 10746234
    Abstract: An automatic transmission includes a piston movable in an axial direction, a plurality of friction plates disposed on a side of a first surface of the piston, a fastening hydraulic chamber applying a hydraulic pressure to a second surface of the piston to move the piston to a fastening position where the friction plates are pressed to be fastened to each other, a release hydraulic chamber applying a hydraulic pressure to the first surface of the piston to move the piston to a release position where the friction plates are released, and a hydraulic pressure control valve that supplies and discharges the hydraulic pressure to and from each of the fastening hydraulic chamber and the release hydraulic chamber. An area of the second surface of the piston for receiving the hydraulic pressure is set to be larger than an area of the first surface for receiving the hydraulic pressure.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: August 18, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yutaro Fukuda, Tadashi Saito, Masahiro Kaji, Manabu Sasahara, Tomohiro Kubo, Shinya Kamada, Norio Iwashita, Kaori Sako, Tomotaka Ishizaka, Tatsuhiko Iwasaki, Koshiro Saji, Tatsutoshi Mizobe
  • Patent number: 10746080
    Abstract: An exhaust system device (1) for a vehicle (100) comprises an exhaust purification device (18) and a first exhaust gas recirculation (EGR) cooler (24). The exhaust purification device (18) is disposed with a central axis of a downstream-side end inclined downwardly toward a rear side of the vehicle (100). The EGR cooler (24) is provided so as to introduce exhaust from a downstream side of the exhaust purification device (18), is adjacent to the exhaust purification device (18) and fixed to the exhaust purification device (18), and is disposed such that a central axis of the EGR cooler (24) is inclined downwardly toward the rear side of the vehicle.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: August 18, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takeshi Nakahira, Yuji Kojima, Amane Tsuda
  • Patent number: 10738730
    Abstract: A head-side jacket through which coolant flows is formed in a cylinder head. A main circulation path and a sub circulation path through which coolant fed from a coolant pump respectively circulates are formed. The head-side jacket is separated into an exhaust-port side jacket formed around an exhaust port, and a combustion-chamber-side jacket closer to a combustion chamber than the exhaust-port-side jacket. A heat exchanger is not formed in the main circulation path including the combustion-chamber-side jacket, but is formed in the sub circulation path excluding the combustion-chamber-side jacket and including the exhaust-port-side jacket.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: August 11, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Ryotaro Nishida, Tomohiro Koguchi, Mikimasa Kawaguchi, Yuichi Ayukawa, Tatsuya Takahata, Takayuki Tominaga, Shinji Watanabe, Keita Watanabe
  • Patent number: 10737657
    Abstract: A pedestrian protecting device according to one aspect of the present invention includes: a right air bag device including a right air bag configured to be deployed at a right region of the windshield; and a left air bag device including a left air bag configured to be deployed at a left region of the windshield. A wiper device includes a right wiper and a left wiper including a turning fulcrum located closer to a middle portion of a vehicle than a turning fulcrum of the right wiper. The right and left air bags and include respective tip end portions that vertically overlap each other at the middle portion of the vehicle. The right air bag of the air bag device is deployed before the left air bag of the air bag device is deployed.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: August 11, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Ryouji Funahashi, Tsutomu Watanabe, Susumu Kuroda, Motoharu Sato, Yuji Nakanishi
  • Patent number: 10738664
    Abstract: A controller sets a target hydraulic pressure from a required hydraulic pressure of a hydraulically operated device according to an operating condition of an engine. The controller causes an oil control valve to perform feedback control of the discharge amount of an oil pump in such a manner that an actual hydraulic pressure detected by a hydraulic pressure sensor coincides with the target hydraulic pressure. The controller executes feedback control after executing fixed duty control of setting a duty ratio of the oil control valve to a fixed duty ratio for a predetermined period of time from start of the engine.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: August 11, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Masanori Hashimoto, Hisashi Okazawa
  • 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: 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
  • 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
  • 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: 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: 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