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公开(公告)号：US11725726B2
公开(公告)日：2023-08-15
申请号：US17092713
申请日：2020-11-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Hiromasa Tatsushiro , Kota Fujii
CPC classification number: F16H61/12 , G07C5/0808 , F16H2061/1264 , F16H2061/1276
Abstract: A vehicle anomaly analysis apparatus for analyzing an anomaly having occurred in a shift control operation executed in an automatic transmission of a vehicle, by using a rotational speed changed in process of the shift control operation. The vehicle anomaly analysis apparatus specifies cause of the anomaly in the shift control operation, by applying an anomaly-cause specifying model that indicates a relationship between a manner of chronological change of a racing amount and the cause of the anomaly in the shift control operation, to the manner of the chronological change of the racing amount upon occurrence of the anomaly in the shift control operation. The racing amount is an amount of increase of the rotational speed in the process of the shift control operation, relative to a reference rotational speed that is based on a gear ratio and an output rotational speed of the automatic transmission.
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公开(公告)号：US11628821B2
公开(公告)日：2023-04-18
申请号：US16934469
申请日：2020-07-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Yasuhiro Hiasa , Yasutaka Tsuchida
IPC: F02D41/10 , B60W20/15 , B60W30/188 , B60W10/06 , B60W10/10
Abstract: When an acceleration request is issued, an electronic control unit for a hybrid vehicle performs control for producing an acceleration feeling of setting a target engine rotation speed to an initial rotation speed (=basic initial value+initial value correction value) which is lower than an optimal-fuel-efficiency rotation speed at which required engine power is able to be most efficiently output and increasing the engine rotation speed from the initial rotation speed to the optimal-fuel-efficiency rotation speed at a rotation speed increase rate (=basic increase rate+increase rate correction value) based on the elapse of time. When the target supercharging pressure is high, the initial value correction value is set to a greater value and the increase rate correction value is set to a greater value than when the target supercharging pressure is low.
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公开(公告)号：US11440548B2
公开(公告)日：2022-09-13
申请号：US17325365
申请日：2021-05-20
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Yuuki Makino
IPC: B60W30/18 , B60K17/356 , B60K17/35 , B60L7/18 , B60K1/04 , B60L15/20 , B60L7/26 , B60W10/08 , B60W10/184 , B60W10/02 , B60K17/02
Abstract: A four-wheel drive vehicle includes: (a) main drive wheels and auxiliary drive wheels; (b) a rotating machine as a drive power source; (c) a drive-power distribution clutch configured to allocate a part of a drive power outputted to the main drive wheels from the drive power source, to the auxiliary drive wheels, so as to distribute the drive power to the main drive wheels and the auxiliary drive wheels with a drive-power distribution ratio between the auxiliary drive wheels and the main drive wheels, such that the drive-power distribution ratio is variable with an engaging force of the drive-power distribution clutch being controlled; and (d) a control apparatus configured, when determining that a heat load of the drive-power distribution clutch is large during deceleration running of the vehicle, to limit a regenerative torque of the rotating machine, as compared with when determining that the heat load is small.
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公开(公告)号：US11433874B2
公开(公告)日：2022-09-06
申请号：US17025699
申请日：2020-09-18
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Takahiro Kimura
Abstract: When a speed difference between a maximum rotation speed and an engine rotation speed, that is, an actual rotation speed difference, is equal to or less than a margin rotation speed difference, an engine operating point is changed such that the actual rotation speed difference becomes greater than the margin rotation speed difference. Accordingly, the speed difference between the maximum rotation speed and the engine rotation speed is prevented from becoming equal to or less than the margin rotation speed difference. As a result, since a relatively sufficient margin is secured in the difference between the maximum rotation speed and the engine rotation speed, it is possible to prevent the engine rotation speed from falling into a high-rotation state in which the engine rotation speed exceeds the maximum rotation speed.
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15.发明授权公开(公告)号：US11421781B2
公开(公告)日：2022-08-23
申请号：US17359738
申请日：2021-06-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hideaki Bunazawa , Atsushi Tabata , Koichi Okuda , Ken Imamura , Kota Fujii , Keita Sasaki
Abstract: An oil pressure learning method of an automatic transmission includes acquiring a state of a vehicle in a state where relational regulation data is stored, supplying oil to the automatic transmission such that the value of the oil pressure is set to an oil pressure command value, calculating, as a specific variable, a variable representing an amount in which a detected input rotation speed exceeds a target input rotation speed, or the like, calculating a reward in a manner in which it has a larger value when the specific variable satisfies a criterion than when it does not satisfy the criterion, updating the relational regulation data by inputting, to an update mapping, the reward and the oil pressure command value, and calculating a torque variable having a value that is increased as an amount of change in an input torque is increased.
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Patent Agency Ranking
公开(公告)号：US11305781B2
公开(公告)日：2022-04-19
申请号：US17093046
申请日：2020-11-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Hiromasa Tatsushiro , Kota Fujii
Abstract: A vehicle control device stores learning data to correct a parameter used in a control program for controlling a vehicle, determines whether or not a part controlled by the parameter has been replaced; and resets the learning data when determining that the part has been replaced. The vehicle control device determines whether or not the part has been replaced by identifying individuality of the part based on characteristics of a sensor output from a sensor provided in the part.
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公开(公告)号：US20210146941A1
公开(公告)日：2021-05-20
申请号：US17096409
申请日：2020-11-12
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koichi Okuda , Atsushi Tabata , Masafumi Yamamoto , Yoshito Sekiguchi
IPC: B60W50/06 , G01C21/34 , B60W60/00 , B60W10/18 , B60W10/20 , G06F8/65 , H04L29/08 , H04W4/024 , H04W4/40
Abstract: When a required download time is equal to or shorter than a communication-enabled time on a running route, an update program is received from an external device via wireless communication, so a vehicular program is appropriately updated. Besides, when the required download time is longer than the communication-enabled time on the running route, a driving method ensuring the communication-enabled time that is equal to or longer than the required download time is suggested to a driver, so the update program is easy to receive via wireless communication. In consequence, the opportunities to update the vehicular program can be ensured. That is, the vehicular program can be restrained or prevented from being updated with a delay.
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公开(公告)号：US20210131370A1
公开(公告)日：2021-05-06
申请号：US17071023
申请日：2020-10-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takeshi Kitahata , Atsushi Tabata , Kenji Miyasaka , Kodo Nakawatari , Koichi Okuda
Abstract: A control apparatus for a vehicle includes: a characteristic storage portion configured to store therein torque-characteristic information representing an output torque characteristic as a characteristic of an output torque of an engine of the vehicle, which has appeared in a certain control operation, such that the stored torque-characteristic information is divided into a plurality of groups corresponding to respective refueling points that provide the fuel; and a factor determination portion configured, when the output torque characteristic represented by the torque-characteristic information belonging to one of the plurality of groups and the output torque characteristic represented by the torque-characteristic information belonging to another one of the plurality of groups are different from each other and a characteristic difference therebetween is not smaller than a threshold value, to determine that the characteristic difference is caused by a difference in a property of the fuel.
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公开(公告)号：US10955053B2
公开(公告)日：2021-03-23
申请号：US15786161
申请日：2017-10-17
Inventor： Hiroyuki Tateno , Kiyonori Takagi , Koichi Okuda , Atsushi Kawamoto , Ryuji Ibaraki , Yuji Yasuda , Haruhisa Suzuki , Hideki Matsubo , Junya Abe
IPC: F16H63/34 , F16H61/22 , F16D127/04
Abstract: A manual unlocking device for a parking lock mechanism includes an operation lever that rotates when the parking lock mechanism is switched from a locked state to an unlocked state. The operation lever is arranged outside an occupant space of a vehicle cabin and is configured that a tool can be coupled to a rotation center thereof from the occupant space. The manual unlocking device for the parking lock mechanism is configured to switch the parking lock mechanism from the locked state to the unlocked state by integral rotation of the operation lever with the tool when the tool, which is coupled to the operation lever, rotates in a state where the tool is arranged on the rotation center of the operation lever.
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公开(公告)号：US10851889B2
公开(公告)日：2020-12-01
申请号：US16673171
申请日：2019-11-04
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kota Fujii , Atsushi Tabata , Tetsuya Kono , Koichi Okuda
Abstract: While automatic driving control is being performed, traveling in a driving state of a vehicle corresponding to an unconverged region (including an unperformed region and a performed region) is preferentially selected between the traveling in the driving state of the vehicle corresponding to the unconverged region, and traveling in the driving state of the vehicle corresponding to a converged region. As such, learning control that corrects an amount of operation associated with control of the vehicle is performed more easily throughout the entire learning regions regardless of a usage state of the vehicle by a driver. Therefore, it is possible to achieve an appropriate traveling state at an early stage by the learning control that corrects the amount of operation associated with control of the vehicle.
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