Patents Assigned to Mazda Motor Corporation
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Patent number: 11858555Abstract: A front body structure of a vehicle includes a dash member that extends in a vehicle width direction and separates a vehicle interior from an engine room, a pair of left and right front side frames that extend from left and right end portions of the dash member, and a pair of left and right suspension towers that are fixed to the pair of front side frames and support the upper portions of dampers of a suspension device. A first coupling member couples the dash member to the suspension towers. The first coupling member has a reinforced layer portion made of fiber reinforced plastic in which fibers are impregnated with a synthetic resin material. The fibers of the reinforced layer portion are oriented so that more fibers extend in a longitudinal direction than extend in directions other than the longitudinal direction.Type: GrantFiled: February 2, 2022Date of Patent: January 2, 2024Assignee: MAZDA MOTOR CORPORATIONInventors: Kenji Nishida, Chikara Kawamura
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Patent number: 11859574Abstract: A method of controlling an engine is provided, which includes the steps of injecting main fuel by a fuel injector during an intake stroke or a compression stroke, providing a mixture gas containing fuel and air inside a cylinder, applying by an ignition device a high voltage between electrodes of a spark plug at a timing when the mixture gas is not ignited, detecting a parameter related to a current value of an electric-discharge channel generated between the electrodes, determining by a controller whether the detected parameter is within a range between a first threshold and a second threshold to determine a flowing state of a vortex inside the cylinder, operating the spark plug to carry out a supplemental ignition when the parameter is determined to be outside the range, and igniting the mixture gas by operation of the spark plug after the supplemental ignition.Type: GrantFiled: October 26, 2021Date of Patent: January 2, 2024Assignee: Mazda Motor CorporationInventors: Noriyuki Ota, Yoshihisa Nou
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Patent number: 11858045Abstract: Provided is a Fe-based sintered body which has both of a high hardness and a high thermal conductivity and which can be more stably produced. The Fe-based sintered body includes: a matrix (1) containing Fe as a main component; and a hard phase (4) dispersed in the matrix (1). The matrix (1) is formed in a network shape and contains ?Fe. The hard phase (4) contains TiC.Type: GrantFiled: July 24, 2019Date of Patent: January 2, 2024Assignees: Hiroshima University, Y-tec Corporation, keylex corporation, Mazda Motor CorporationInventors: Kazuhiro Matsugi, Yujiao Ke, Zhefeng Xu, Kenjiro Sugio, Yongbum Choi, Gen Sasaki, Hajime Suetsugu, Hiroki Kondo, Hideki Manabe, Kyotaro Yamane, Kenichi Hatakeyama, Keizo Kawasaki, Tsuyoshi Itaoka, Shinsaku Seno, Yasushi Tamura, Ichirou Ino, Yoshihide Hirao
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Patent number: 11861956Abstract: In a device (1) for recognizing an external environment of a moving body, an image processing unit (10) generates image data indicating the external environment of the moving body. Using this image data, object data indicating an object around the moving body is generated. At an occurrence of a predetermined event, a control unit (30) records the generated object data in a recording device (35), whereas the image processing unit (10) records, in another recording device (15), the image data corresponding to the object data recorded in the recording device (35). The time information generation unit (40) adds the same time information to the recorded object data and image data.Type: GrantFiled: March 16, 2020Date of Patent: January 2, 2024Assignee: MAZDA MOTOR CORPORATIONInventors: Daisuke Horigome, Daisuke Hamano
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Publication number: 20230415454Abstract: A multilayer coating film includes a lustrous layer containing a luster material and a blackish coloring agent, and a colored layer containing a reddish coloring agent, and having translucency. A slope of a tangent of a spectrum of a spectral transmittance, defined as an absolute value, of the colored layer at the wavelength of 620 nm is 0.02 nm?1 or more and 0.06 nm?1 or less, the spectral transmittance being obtainable by dividing a spectral reflectance measured for the colored layer stacked on the lustrous layer at the light receiving angle of 15° in the case of the light incident angle of 45°, by a spectral reflectance measured for the lustrous layer from which the colored layer is removed and a surface of which is therefore exposed, at the light receiving angle of 15° in the case of the light incident angle of 45°.Type: ApplicationFiled: October 22, 2021Publication date: December 28, 2023Applicant: MAZDA MOTOR CORPORATIONInventors: Takakazu YAMANE, Keiichi OKAMOTO, Kouji TERAMOTO, Ryuji NONAKA, Kazuteru TAMAI, Eiichi KAWASE, Tomohiro FUJIMOTO, Takayoshi NAKAMOTO
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Patent number: 11850780Abstract: A resin member includes: a resin substrate; and a micro-embossed pattern and having a plurality of recesses and a plurality of protrusions. The plurality of protrusions includes: a plurality of first protrusions; and a plurality of second protrusions having a height of from ¼ to ¾ of the height of the first protrusions. A distance between peaks of two adjacent ones of the plurality of protrusions ranges from 100 ?m to 500 ?m. The number of the minute regions having an angle of inclination of from ?10° to 10° with respect to the reference plane ranges from 78% to 95% of the number of all of the minute regions included in the micro-embossed pattern corresponding to the predetermined distance, and the number of the minute regions having an angle of inclination of from ?1° to 1° ranges from 25% to 40% of the number of all of the minute regions.Type: GrantFiled: November 15, 2019Date of Patent: December 26, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Sakura Nakano, Masaaki Akamine, Kaname Sawai, Akihiro Hosono, Shuhei Narita, Yu Tanaka
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Patent number: 11852090Abstract: A vehicle control system includes an accelerator sensor which detects an accelerator opening, and a processor which sets a target acceleration of a vehicle based on the detected accelerator opening, sets a target torque of a drive source based on the set target acceleration, and controls the drive source to generate the set target torque. In a case where the target acceleration at a time when the accelerator opening is increased is set as a depression-increasing target acceleration and the target acceleration at a time when the accelerator opening is decreased is set as a pedal-returning target acceleration, under the same condition of the accelerator opening, the processor sets the target acceleration such that the depression-increasing target acceleration and the pedal-returning target acceleration are different from each other in a predetermined range of an upper limit acceleration or less and a lower limit acceleration or greater.Type: GrantFiled: February 11, 2022Date of Patent: December 26, 2023Assignee: Mazda Motor CorporationInventors: Takefumi Takada, Yuki Ishiyama
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Patent number: 11850953Abstract: In a drive unit, a motor and an inverter having power modules are disposed adjacent in an axial direction of the motor. In the motor, first and second coil groups, each including one U-phase coil, one V-phase coil, and one W-phase coil, are provided. The power modules constitute first and second power module groups that are connected in parallel. The first and second power module groups each include one U-phase power module, one V-phase power module, and one W-phase power module. A distance between the U-phase power module of the first power module group and the U-phase coil of the first coil group, a distance between the V-phase power module of the first power module group and the V-phase coil of the first coil group, and a distance between the W-phase power module of the first power module group and the W-phase coil of the first coil group are equal.Type: GrantFiled: October 20, 2022Date of Patent: December 26, 2023Assignees: MAZDA MOTOR CORPORATION, ROHM CO., LTDInventors: Takayuki Sato, Masashi Hayashiguchi
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Patent number: 11850933Abstract: A vehicle body structure includes a front floor panel and a rear floor panel provided at the rear of the front floor panel. The front floor panel is positioned higher than the rear floor panel. A front battery that supplies electric power to the traction motor is arranged below the front floor panel.Type: GrantFiled: January 26, 2022Date of Patent: December 26, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Isao Toda, Takayuki Kimura, Takehiro Kamei, Hiroshi Tanaka, Haruo Ohe, Masaya Hiramatsu, Masanobu Fukushima, Takao Fukuda, Hironobu Hashiguchi, Hiroyuki Baba
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Patent number: 11845496Abstract: A vibration damping structure includes a panel which is a structure and a damping member joined to the panel. The damping member has a plurality of joined portions joined to a mating surface of the panel through respective joined surfaces in the X direction, and a plurality of spacing portions recessed toward the side opposite to the panel in the Z direction between adjacent joined portions. The damping member is formed such that the damping member is higher in damping than the panel and a resonance frequency of the damping member is formed such that it is substantially the same as a primary resonance frequency of the panel.Type: GrantFiled: February 9, 2022Date of Patent: December 19, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Kaito Nakamura, Miho Kurata, Sakayu Terada, Shuhei Narita, Daisuke Yamada, Toshitaka Miyoshi
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Patent number: 11845417Abstract: A control apparatus for an electric vehicle includes a first motor (traveling motor) for traveling, a battery (high-voltage battery), a second motor (generator motor) for electricity generation, an engine (rotary engine), a first controller (engine ECU), a second controller (motor ECU), and a sensor (voltage-current sensor). The second controller is configured to start the engine by causing the second motor to perform power running, cause the second motor to perform electricity generation driving such that the battery is charged, and adjust a stop position of the engine by causing the second motor to perform power running subsequently to a stop of the engine by the first controller in a case where a state of charge of the battery becomes high and the second motor finishes the electricity generation driving.Type: GrantFiled: May 16, 2022Date of Patent: December 19, 2023Assignee: MAZDA MOTOR CORPORATIONInventor: Hiroyuki Saito
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Publication number: 20230399054Abstract: A side sill that is disposed in a lower part and on an outer side in a vehicle width direction of a vehicle and has a side sill inner and a side sill outer which collaborate with each other to form a closed cross section extending in a front-rear direction of the vehicle; a wheel that is located ahead of the side sill outer; an outer-side reinforcement member that has a shape extending along a front face part and a side face part in a front end part of the side sill outer and is joined to the front end part from inside the closed cross section; and an inner-side reinforcement member that diagonally couples a front face part and a side face part in a front end part of the side sill inner to each other.Type: ApplicationFiled: March 23, 2023Publication date: December 14, 2023Applicant: Mazda Motor CorporationInventors: Ippei KURODA, Masaya NISHIMOTO, Shota NAKAYAMA
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Patent number: 11840976Abstract: A control device for an engine is provided, which includes a combustion chamber formed by a cylinder and a piston, an intake air amount adjuster that adjusts an intake air amount supplied to the combustion chamber, a controller switchable of a combustion mode between a fuel-lean first combustion mode and a stoichiometric second combustion mode based on an engine operating state, and an intake air cooler that cools the intake air supplied to the combustion chamber. The controller controls the intake air cooler to start intake air cooling in response to a request for switching the combustion modes, and after the intake air cooling is started, controls the intake air amount adjuster to start the switching of the combustion modes, and then controls the intake air cooler and the intake air amount adjuster so that the switching of the combustion modes ends after the intake air cooling is finished.Type: GrantFiled: August 19, 2022Date of Patent: December 12, 2023Assignee: Mazda Motor CorporationInventors: Tohru Hokazono, Kota Maekawa, Masaharu Marumoto, Kazuaki Narahara, Chinami Morishima
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Patent number: 11840146Abstract: In a control method for a vehicle and a vehicle controller that add deceleration to a vehicle so as to control a vehicle posture when a turning operation of a steering system is performed, the deceleration is appropriately set on the basis of an operation of a single pedal.Type: GrantFiled: January 29, 2019Date of Patent: December 12, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Daisuke Umetsu, Osamu Sunahara, Daisaku Ogawa
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Patent number: 11833984Abstract: 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: GrantFiled: January 28, 2021Date of Patent: December 5, 2023Assignee: MAZDA MOTOR CORPORATIONInventor: Yusuke Nakaya
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Patent number: 11835001Abstract: A control system for an engine including intake and exhaust valve phase variable devices and a control device is provided. At an engine temperature below a first determination temperature, the control is performed so that an exhaust valve close timing is at or retarded from the exhaust top dead center, an intake valve open timing is retarded from the exhaust valve close timing, and the fuel supply to the combustion chamber starts in an intake stroke on a retarding side of the exhaust valve close timing. At the engine temperature above the first determination temperature and below a second determination temperature, the control is performed so that a negative overlap with both the exhaust and intake valves closed during a period including the exhaust top dead center, or a positive overlap with both the exhaust and intake valves opened during a period including the exhaust top dead center, occurs.Type: GrantFiled: March 23, 2023Date of Patent: December 5, 2023Assignee: Mazda Motor CorporationInventors: Takeaki Kudo, Junki Hori, Masatoshi Seto, Tatsuya Fujikawa, Masahisa Yamakawa
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Patent number: 11834981Abstract: To meet both a request to improve the thermal efficiency in the medium load operation of an engine and a request to suppress knocking in the high load and high rotation operation of the engine, the engine includes a main combustion chamber including a cylinder block, a cylinder head, and a piston; a pre-chamber having a plurality of injection holes that are open into the main combustion chamber; and a spark plug that ignites an air-fuel mixture in the pre-chamber. A compression ratio of the main combustion chamber is not less than 14 and not more than 24. A second index that is a product between a volume of the pre-chamber and the compression ratio is not less than 1.03 cm3 and not more than 5.92 cm3.Type: GrantFiled: November 16, 2022Date of Patent: December 5, 2023Assignee: Mazda Motor CorporationInventors: Yuji Harada, Kenji Uchida, Ryohei Ono, Masayuki Kidokoro, Kazuhiro Nagatsu
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Patent number: 11834028Abstract: A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration during which the friction brake system is distributing a braking force to front and rear wheels, a regeneration control of imparting a regenerative braking torque to the rear wheels and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft to the transmission. When the controller determines an oversteered state of the vehicle during the regeneration control, the controller increases an input torque of the input shaft so that the regenerative braking torque decreases while maintaining the regeneration operation of the motor and, at the same time, interrupts motive power transmission between the input shaft and an output shaft of the transmission.Type: GrantFiled: March 24, 2023Date of Patent: December 5, 2023Assignee: Mazda Motor CorporationInventors: Makoto Yamada, Tooru Uematsu, Atsushi Yamasaki
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Publication number: 20230382298Abstract: A driver state determination apparatus detects the decline of the physical function of a driver and confirms the determination of an abnormal state before the driver becomes unable to drive. A vibration apparatus vibrates a steering wheel; a vibration detector detects the vibration of the steering wheel; and a controller controls the vibration apparatus. The controller provides vibration at a predetermined excitation frequency to the steering wheel by the vibration apparatus, calculates a steering torque level at the excitation frequency based on the vibration detected by the vibration detector, and determines that a driver is in an abnormal state when an average value of the steering torque level while the vibration is being provided is equal to or more than a first threshold value, and/or a standard deviation of the steering torque level while the vibration is being provided is equal to or more than a second threshold value.Type: ApplicationFiled: March 24, 2023Publication date: November 30, 2023Applicant: MAZDA MOTOR CORPORATIONInventors: Wataru YOSHIDA, Akira KAINO
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Publication number: 20230380741Abstract: A driver state determination apparatus detects decline of the physical function of a driver and confirms an abnormal state before the driver becomes unable to drive. A vibration apparatus vibrates a steering wheel; a vibration detector detects vibration of the steering wheel; a steering angle sensor detects a steering angle of the steering wheel; and a controller controls the vibration apparatus. The controller provides vibration at a predetermined excitation frequency to the steering wheel by the vibration apparatus, calculates a steering torque level at the excitation frequency based on the vibration detected by the vibration detector, and determines that the driver is in an abnormal state when a correlation coefficient between a time variation of a steering torque level while the vibration is being provided and a time variation of a steering angle while the vibration is being provided is equal to or more than a predetermined value.Type: ApplicationFiled: March 24, 2023Publication date: November 30, 2023Applicant: MAZDA MOTOR CORPORATIONInventors: Akira Kaino, Yoshitaka Fujihara, Yoko Hoshino