Patents Assigned to Mazda Motor Corporation
  • Patent number: 11111871
    Abstract: Provided is 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 advanced 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 17, 2019
    Date of Patent: September 7, 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: 11111865
    Abstract: A compression ignition engine with a supercharger is provided, which includes one or more valves configured to switch a state between a first state where intake air is boosted by the supercharger and a second state where it is not boosted, a fluid temperature adjuster configured to adjust a temperature of engine coolant to be supplied to a radiator from an engine body, and a controller. When the engine operates in a high-load range, the controller controls the combustion mode to be in a compression ignition combustion mode, and causes the valve(s) to be in the first state, and in a low-load range, the controller causes the valve(s) to be in the second state. In the high-load range, the controller outputs a control signal to the fluid temperature adjuster so that a target temperature of the engine coolant is lowered than that in the low-load range.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: September 7, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Shinichi Hikitani, Hajime Umehara, Naoki Nagano, Tomokuni Kusunoki, Tatsuya Takahata, Shinji Watanabe, Masanobu Koutoku, Toshinori Ueno, Katsuya Murakami, Nobuhiko Yokoyama
  • Patent number: 11110886
    Abstract: A vehicular passenger restraint device including a seatbelt capable of restraining a passenger seated in a rear seat 10 includes a belt guide 50 disposed on the outer side, in the vehicle width direction, of an upper portion of a seat back 12, and the belt guide 50 is configured such that an inner longitudinal surface portion 52 is tiltable toward the inner side in the vehicle width direction by a load applied from the seatbelt at the time of collision. A lock release switch 14 for the seat back 12 is disposed on the inner side in the vehicle width direction relative to the belt guide 50. A regulation member 55 regulating the inner longitudinal surface portion 52 between the belt guide 50 and the lock release switch 14, not to be incline toward the inner side in the vehicle width direction by a predetermined angle or more.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: September 7, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Junsuke Inoue
  • Patent number: 11110872
    Abstract: A power control device for a power supply mounted on a vehicle is provided, which includes a generator mounted on the vehicle and configured to regenerate power from kinetic energy of the vehicle, a high-voltage battery configured to accumulate the power regenerated by the generator, a low-voltage battery of which a nominal voltage is lower than the high-voltage battery, a voltage converter configured to lower an output voltage from the high-voltage battery and charge the low-voltage battery at the lower voltage, and a controller configured to control the voltage converter. The controller operates the voltage converter to start the charging of the low-voltage battery after the vehicle is powered ON and before an engine mounted on the vehicle is started.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: September 7, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Kurihara, Yusuke Nakano, Hidemasa Tomiyori, Yukihiro Soeda, Akina Inagaki, Yuta Otsuka
  • Patent number: 11110966
    Abstract: A front body structure of the vehicle includes a pair of left and right apron reinforcements, a pair of left and right front side frames, a pair of left and right suspension housings, and a sub-frame. The front body structure of the vehicle further includes a shroud upper that joins the front ends of the apron reinforcements, a pair of left and right shroud members that join the shroud upper and the front ends of the front side frames, and a pair of left and right front joint members that join the front ends of the front side frames and the sub-frame, in which the shroud members are joined to the upper surfaces and the side surfaces of the front side frames.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: September 7, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kuniyoshi Tashiro, Shigeaki Watanabe, Hidenori Matsuoka
  • Patent number: 11111886
    Abstract: An engine EGR system is provided. An EGR passage includes an EGR cooler, an EGR internal passage passing through a cylinder head on an upstream side of the EGR cooler, and a relay passage extending outside the cylinder head and connecting the EGR internal passage to the EGR cooler. The EGR cooler formed in a columnar shape is arranged above an intake manifold so as to locate a gas inflow port on a first end surface side and a gas outflow port on a second end surface side, and the relay passage communicates with the EGR internal passage on an external side of the engine compared to a head EGR gas exit. The EGR cooler inclines downward from the gas outflow port toward the gas inflow port, and the relay passage is connected to the gas inflow port while being bent downward toward the upstream side.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: September 7, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Shinji Fujihira, Hiroshi Kinoshita, Takashi Kariya, Takayuki Tominaga, Ken Yoshida
  • Publication number: 20210269047
    Abstract: To reduce the man-hours of software development when vehicle types are deployed, an in-vehicle equipment control device has a control unit that outputs, to actuators, control signals based on the outputs from sensor devices. The control unit includes a middleware layer and a device driver layer as software components. The middleware layer includes a routing module that selects whether the communication data output from the sensor devices is output as is or the communication data is subjected to predetermined processing and then output according to the type of the communication data, and a treatment module that performs the predetermined processing on the communication data. The routing module has a function of outputting the communication data to the device driver.
    Type: Application
    Filed: January 28, 2021
    Publication date: September 2, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Yusuke NAKAYA
  • Publication number: 20210270333
    Abstract: In the vehicle control system, a controller may perform first regenerative control that causes a motor generator to perform regeneration so as to apply a braking force to a vehicle when the accelerator is off and, when the accelerator is off and a steering is turned, perform second regenerative control that causes the motor generator to perform regeneration so as to apply a braking force to the vehicle in order to control the vehicle attitude by generating a deceleration that corresponds to a steering angle in the vehicle in addition to the first regenerative control.
    Type: Application
    Filed: February 10, 2021
    Publication date: September 2, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Daisaku OGAWA, Daisuke UMETSU, Shinya MORISHITA
  • 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
  • Publication number: 20210273997
    Abstract: The present disclosure relates to reducing software development man-hours when vehicle models are developed. In an in-vehicle equipment controller, a control section has, as a software configuration: an application layer in which an application for in-vehicle equipment is implemented; a device driver; and a middleware layer in which a communication path is generated between the application and the device driver. The middleware layer includes a physical quantity conversion module that converts physical quantity data according to a specified conversion rule, the physical quantity data being included in data transferred through the communication path.
    Type: Application
    Filed: January 28, 2021
    Publication date: September 2, 2021
    Applicant: Mazda Motor Corporation
    Inventor: Yusuke NAKAYA
  • 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
  • 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: 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: 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: 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: 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