Patents by Inventor Yuuki Okuda
Yuuki Okuda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11958471Abstract: A four-wheel drive vehicle includes: a drive-power distribution device for distributing a drive power from an engine to main and auxiliary drive wheels with a drive-power distribution ratio between the main drive wheels and auxiliary drive wheels; and a control apparatus for controlling an electric motor such that the drive-power distribution ratio becomes a target distribution ratio value, by setting an electric-current command value for driving an electric motor. The control apparatus is configured, in a drive-power transmitted state in which the drive power is transmitted to the drive-power distribution device, to execute a command-value reduction control operation for causing the electric motor to be driven with the electric-current command value being set to a value smaller than in a drive-power non-transmitted state in which the drive power is not being transmitted to the drive-power distribution device.Type: GrantFiled: June 22, 2021Date of Patent: April 16, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Tabata, Koichi Okuda, Koji Takaira, Akinori Takahashi, Yuuki Makino
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Patent number: 11945438Abstract: A vehicle control apparatus includes: a follow-up-running control portion configured to execute a follow-up running control for causing a vehicle to run following a preceding vehicle with a target inter-vehicle distance; and a shift control portion configured to change a gear ratio of an automatic transmission in accordance with a predetermined shifting condition. The shift control portion is configured to set a high fluid-temperature determination value, based on information relating to the preceding vehicle that affects an air flow rate. When a fluid temperature of the automatic transmission is not lower than the high fluid-temperature determination value, the shift control portion is configured to change the shifting condition such that a higher-speed gear position making the gear ratio lower is more frequently established in the automatic transmission than when the fluid temperature of the automatic transmission is lower than the high fluid-temperature determination value.Type: GrantFiled: June 9, 2023Date of Patent: April 2, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichi Okuda, Masafumi Yamamoto, Yoshito Sekiguchi, Yuuki Makino
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Patent number: 11878686Abstract: A driving assistance device controls the speed of an own vehicle based on a predicted traveling state of a preceding vehicle, and includes a traveling scene recognition unit that detects the distance until the preceding vehicle reaches an intersection, a determination unit that determines a traveling scene of the preceding vehicle at the intersection, and a calculation unit that selects the preceding vehicle prediction model according to the traveling scene determined by the determination unit from among a plurality of preceding vehicle prediction models recorded for each traveling scene in which the preceding vehicle travels, and inputs a distance until the preceding vehicle detected by the traveling scene recognition unit in the selected preceding vehicle prediction model reaches the intersection so as to calculate a predicted traveling state of the preceding vehicle after a predetermined time.Type: GrantFiled: October 8, 2019Date of Patent: January 23, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Yoichi Iihoshi, Takashi Okada, Yuuki Okuda
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Publication number: 20230365142Abstract: An object of the present invention is to provide a vehicle control device that controls an engine so as to improve fuel consumption in consideration of driving characteristics of a driver and an automatic driving system, the vehicle control device being capable of appropriately reflecting the driving characteristics of the driver and the automatic driving system caused by a difference in traffic environment in control, and a data adjustment method of a database.Type: ApplicationFiled: September 30, 2021Publication date: November 16, 2023Applicant: Hitachi Astemo, Ltd.Inventors: Yuuki OKUDA, Takashi OKADA
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Publication number: 20230339487Abstract: An object of the present invention is to provide a vehicle control device that controls an engine so as to improve fuel efficiency, with driving characteristics of a driver or an automatic driving system in consideration. A vehicle control device includes: a driving characteristic computation unit that computes driving characteristic parameters of an own vehicle on the basis of an intervehicle distance between a preceding vehicle and the own vehicle; a preceding vehicle state prediction unit that predicts a state of the preceding vehicle after a predetermined amount of time on the basis of the intervehicle distance; and a driving state estimation unit that estimates a driving state of the own vehicle after the predetermined amount of time on the basis of the state of the preceding vehicle after the predetermined amount of time predicted by the preceding vehicle state prediction unit and the driving characteristic parameters of the own vehicle computed by the driving characteristic computation unit.Type: ApplicationFiled: September 8, 2020Publication date: October 26, 2023Inventors: Yuuki OKUDA, Takashi OKADA
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Publication number: 20230143238Abstract: The present invention provides a vehicle control device capable of improving fuel consumption while reducing deterioration of emission by appropriately controlling a powertrain system of a vehicle. A vehicle control device includes: a prediction unit configured to predict speeds or accelerations of a vehicle based on a plurality of prediction models; a fuel consumption information calculation unit configured to calculate fuel consumption for each of a plurality of prediction results obtained by the prediction unit; a selection unit configured to select any one of the plurality of prediction results; and a powertrain control unit configured to control at least one of an engine, a generator, an inverter, a drive motor, and a transmission of the vehicle based on the prediction result selected by the selection unit.Type: ApplicationFiled: January 15, 2021Publication date: May 11, 2023Inventors: Yoichi IIHOSHI, Takashi OKADA, Yuuki OKUDA
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Patent number: 11403949Abstract: Example implementations described herein involve a system for predicting vehicle behavior with a higher efficiency which can reduce the number of sensors and the amount of data needed for vehicle control systems. Example implementations described herein can be used for any type of vehicle control system, such as a powertrain control system, an adaptive cruise control system, an autonomous driving system, because the target vehicle to be predicted can be replaced to a preceding vehicle, a surrounding vehicle, and an ego vehicle.Type: GrantFiled: May 9, 2019Date of Patent: August 2, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Yuto Imanishi, Subrata Kumar Kundu, Yoichi Iihoshi, Takashi Okada, Yuuki Okuda
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Patent number: 11364909Abstract: The movement of the vehicle is controlled so that the travel time does not become long while reducing the fuel consumption of the vehicle. A vehicle control device 1 that automatically controls a speed of a vehicle is configured to include an acceleration/deceleration pattern setting unit 22 that sets a plurality of acceleration/deceleration patterns including acceleration and deceleration in a traveling scheduled zone and sets the speed to be the same in a region between an acceleration region and a deceleration region in each acceleration/deceleration pattern based on traveling history in a traveling scheduled zone.Type: GrantFiled: April 10, 2019Date of Patent: June 21, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Yoichi Iihoshi, Takashi Okada, Kengo Kumano, Yuuki Okuda
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Patent number: 11352003Abstract: A vehicle control device includes a determination unit, a speed control unit, and a recommended speed acquisition unit. The recommended speed acquisition unit acquires a first recommended speed, being a new recommended speed related to a first section. The determination unit determines a magnitude relationship between the first recommended speed and the first recommended speed. The speed control unit controls the speed of the vehicle to be maintained at a speed of the first recommended speed in the first section when the determination unit determines that the first recommended speed is less than the first recommended speed.Type: GrantFiled: June 28, 2018Date of Patent: June 7, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Yuuki Okuda, Takashi Okada, Naoyuki Tashiro, Yoichi Iihoshi, Yuto Imanishi
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Publication number: 20210380108Abstract: A driving assistance device controls the speed of an own vehicle based on a predicted traveling state of a preceding vehicle, and includes a traveling scene recognition unit that detects the distance until the preceding vehicle reaches an intersection, a determination unit that determines a traveling scene of the preceding vehicle at the intersection, and a calculation unit that selects the preceding vehicle prediction model according to the traveling scene determined by the determination unit from among a plurality of preceding vehicle prediction models recorded for each traveling scene in which the preceding vehicle travels, and inputs a distance until the preceding vehicle detected by the traveling scene recognition unit in the selected preceding vehicle prediction model reaches the intersection so as to calculate a predicted traveling state of the preceding vehicle after a predetermined time.Type: ApplicationFiled: October 8, 2019Publication date: December 9, 2021Applicant: Hitachi Astemo, Ltd.Inventors: Yoichi IIHOSHI, Takashi OKADA, Yuuki OKUDA
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Publication number: 20210291868Abstract: The present invention makes it possible to achieve both securing safety and energy saving at the time of following a preceding vehicle. In the present invention, the preceding vehicle feature amount extraction unit 101 extracts the feature amounts of the preceding vehicle based on the information transmitted from the outside world recognition unit 120, the own vehicle information recognition unit 130, the communication unit 140, and the information storage unit 150, the preceding vehicle classification unit 102 classifies the preceding vehicle based on the feature amount of the preceding vehicle obtained from the preceding vehicle feature amount extraction unit 101, and the travel planning unit 103 corrects the inter-vehicle distance or inter-vehicle time at the time of following the preceding vehicle, or proposes a lane change to an adjacent lane based on the classification result of the preceding vehicle classification unit 102.Type: ApplicationFiled: July 29, 2019Publication date: September 23, 2021Inventors: Yuuki OKUDA, Takashi OKADA
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Publication number: 20210188264Abstract: Provided is a vehicle control device capable of realizing fuel-efficient traveling of an own vehicle. Therefore, a vehicle control device 100 includes a limiting factor determination unit 101 that determines whether there are a limiting factor on an own lane that limits traveling of an own vehicle in the own lane and a limiting factor on an adjacent lane that limits the traveling of the own vehicle in a lane adjacent to the own lane, a lane selection unit 102 that selects a lane in which the own vehicle travels based on a determination result of the limiting factor determination unit 101, and a driving force control unit 103 that controls a driving force of the own vehicle based on the lane selected by the lane selection unit 102.Type: ApplicationFiled: February 14, 2019Publication date: June 24, 2021Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yuuki OKUDA, Takashi OKADA, Kengo KUMANO
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Publication number: 20210046933Abstract: The movement of the vehicle is controlled so that the travel time does not become long while reducing the fuel consumption of the vehicle. A vehicle control device 1 that automatically controls a speed of a vehicle is configured to include an acceleration/deceleration pattern setting unit 22 that sets a plurality of acceleration/deceleration patterns including acceleration and deceleration in a traveling scheduled zone and sets the speed to be the same in a region between an acceleration region and a deceleration region in each acceleration/deceleration pattern based on traveling history in a traveling scheduled zone.Type: ApplicationFiled: April 10, 2019Publication date: February 18, 2021Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yoichi IIHOSHI, Takashi OKADA, Kengo KUMANO, Yuuki OKUDA
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Patent number: 10902730Abstract: Provided is a vehicle control device capable of reducing unease experienced by a driver and assisting a lane change of a vehicle. A vehicle control device 10 assists a lane change of a vehicle 1, said device comprising: a visible range calculation unit 11 that calculates an area as a visible range by excluding the area occupied by preceding vehicles 201, 202 from the area corresponding to the field of vision whilst driving; and a lane-change control unit 12 that conducts processing related to the lane change, on the basis of the calculated visible range. The lane-change control unit 12 conducts processing related to the lane change on the basis of the visible range of the current-travel lane of the vehicle, and the visible range of the intended change-destination lane of the vehicle.Type: GrantFiled: June 20, 2018Date of Patent: January 26, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoichi Iihoshi, Koichi Terui, Yuichi Komoriya, Yuuki Okuda, Yuto Imanishi
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Publication number: 20200357282Abstract: Example implementations described herein involve a system for predicting vehicle behavior with a higher efficiency which can reduce the number of sensors and the amount of data needed for vehicle control systems. Example implementations described herein can be used for any type of vehicle control system, such as a powertrain control system, an adaptive cruise control system, an autonomous driving system, because the target vehicle to be predicted can be replaced to a preceding vehicle, a surrounding vehicle, and an ego vehicle.Type: ApplicationFiled: May 9, 2019Publication date: November 12, 2020Inventors: Yuto IMANISHI, Subrata Kumar KUNDU, Yoichi IIHOSHI, Takashi OKADA, Yuuki OKUDA
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Patent number: 10696302Abstract: An internal combustion engine control device is provided. The internal combustion engine control device is provided with a generator that is driven by exhaust gas of the internal combustion engine. The internal combustion engine control device is capable of increasing the power generation of the generator. The internal combustion engine control device includes an exhaust amount control unit. The exhaust amount control unit increases the amount of the exhaust gas supplied to the generator in a coasting state.Type: GrantFiled: July 28, 2016Date of Patent: June 30, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuuki Okuda, Kazuhiro Oryoji, Masayuki Saruwatari
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Publication number: 20200180620Abstract: There is an object to enable reducing speed control giving a driver of a vehicle a sense of incongruity when speed of the vehicle is controlled in accordance with a recommended speed. To achieve the object, there are provided a vehicle control device configured to control traveling of a vehicle including a telematics device capable of acquiring recommended speeds for the vehicle in accordance with traffic conditions in a plurality of sections, and an acceleration and deceleration control device that is configured such that a magnitude relationship between a first recommended speed in a first section where the vehicle currently travels, and a second recommended speed in a second section extending from the first section in a traveling direction of the vehicle, among the acquired recommended speeds, is determined, and speed control of the vehicle is performed in accordance with the magnitude relationship between the first recommended speed and the second recommended speed.Type: ApplicationFiled: June 28, 2018Publication date: June 11, 2020Inventors: Yuuki OKUDA, Takashi OKADA, Naoyuki TASHIRO, Yoichi IIHOSHI, Yuto IMANISHI
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Publication number: 20200118442Abstract: Provided is a vehicle control device capable of reducing unease experienced by a driver and assisting a lane change of a vehicle. A vehicle control device 10 assists a lane change of a vehicle 1, said device comprising: a visible range calculation unit 11 that calculates an area as a visible range by excluding the area occupied by preceding vehicles 201, 202 from the area corresponding to the field of vision whilst driving; and a lane-change control unit 12 that conducts processing related to the lane change, on the basis of the calculated visible range. The lane-change control unit 12 conducts processing related to the lane change on the basis of the visible range of the current-travel lane of the vehicle, and the visible range of the intended change-destination lane of the vehicle.Type: ApplicationFiled: June 20, 2018Publication date: April 16, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoichi IIHOSHI, Koichi TERUI, Yuichi KOMORIYA, Yuuki OKUDA, Yuto IMANISHI
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Publication number: 20200070828Abstract: The purpose of the present invention is to make it possible to minimize worsening of fuel consumption and loss of drivability. To achieve this purpose, it is proposed to use a vehicle control device characterized by having a vehicle behavior distribution information generating unit that generates preceding vehicle behavior distribution information in a given location on a road on the basis of travel histories of a plurality of vehicles, a preceding vehicle behavior information detection unit that detects behavior information of a preceding vehicle immediately ahead, a comparison unit that compares the vehicle behavior distribution information and the preceding vehicle behavior information, and a control unit that controls the host vehicle on the basis of the result of comparison from the comparison unit.Type: ApplicationFiled: December 19, 2017Publication date: March 5, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuuki OKUDA, Yuto IMANISHI, Yoichi IIHOSHI, Naoyuki TASHIRO, Takashi OKADA
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Patent number: 10240547Abstract: Provided is a fuel injection control device capable of accurately detecting a valve opening delay time of a fuel injection valve, and implementing high-precision minute injection control. A valve opening delay time of a fuel injection valve is estimated on the basis of a plurality of valve closing delay times obtained when the fuel injection valve is operated with injection pulse widths that are different injection pulse widths from each other and with which the fuel injection valve is in an intermediate lift state.Type: GrantFiled: June 1, 2016Date of Patent: March 26, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Haoyun Shi, Yuuki Okuda, Masahiro Toyohara