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公开(公告)号：US10982613B2
公开(公告)日：2021-04-20
申请号：US16934073
申请日：2020-07-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Hiromasa Tatsushiro , Kenta Kumazaki
Abstract: A controller and a control method for a vehicle including an engine with a supercharger and an automatic transmission provided in a power transmission path between the engine and driving wheels are provided. The controller is configured to perform learning control of learning a command value associated with gear shifting of the automatic transmission. The controller is configured to limit a supercharging pressure of the supercharger when the automatic transmission is performing gear shifting to be equal to or less than a predetermined pressure until initial learning which is performed by the learning control unit in a predetermined period after the vehicle has been manufactured is completed.
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公开(公告)号：US20210039626A1
公开(公告)日：2021-02-11
申请号：US16942992
申请日：2020-07-30
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tooru MATSUBARA , Atsushi Tabata , Koichi Okuda , Yasutaka Tsuchida , Kenta Kumazaki , Tatsuya Imamura
Abstract: There are provided a controller and a control method for a hybrid vehicle including an engine with a supercharger serving as a drive power source for travel, a rotary machine serving as a drive power source for travel, and a power storage device configured to transmit and receive electric power to and from the rotary machine. The controller determines whether an operation of the supercharger is limited, compensates for a torque shortage of the engine due to limitation of the operation of the supercharger by a torque of the rotary machine when it is determined that the operation of the supercharger is limited, and curbs a decrease in an amount of electric power stored in the power storage device more when it is determined that the operation of the supercharger is limited than when it is determined that the operation of the supercharger is not limited.
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公开(公告)号：US10906524B2
公开(公告)日：2021-02-02
申请号：US16131889
申请日：2018-09-14
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Masafumi Yamamoto , Atsushi Tabata , Tatsuya Imamura , Koichi Okuda , Kota Fujii
Abstract: A control apparatus for a vehicular power transmitting system includes a power transmission switching portion configured to selectively establish a first drive mode by placing one of the first and second coupling elements in an engaged state, a second drive mode by placing the other of the first and second coupling elements in an engaged state, or a third drive mode by placing both of the first and second coupling elements in the engaged states. The power transmission switching portion switches the vehicular power transmitting system between the first and second drive modes through the third drive mode, where a predetermined condition is not satisfied, and switches the vehicular power transmitting system between the first and second drive modes with concurrent engaging and releasing actions of the first and second coupling elements, where the predetermined condition is satisfied.
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公开(公告)号：US10894538B2
公开(公告)日：2021-01-19
申请号：US16420664
申请日：2019-05-23
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takeshi Kitahata , Tooru Matsubara , Kazuyuki Shiiba , Koichi Okuda , Atsushi Tabata
IPC: B60W10/10 , B60W20/20 , B60W20/13 , B60W30/192
Abstract: A control apparatus for a hybrid vehicle that includes an engine serving as a drive force source, an electric motor serving as a drive force source, drive wheels, a storage battery for supplying and receiving an electric power to and from the electric motor, a transmission mechanism for transmitting a drive force supplied from each of the drive force sources toward the drive wheels. During running of the hybrid vehicle by a drive force of the electric motor with the engine being stopped, the control apparatus is configured to determine whether the engine is to be started. When determining that the engine is to be started during the running of the hybrid vehicle, the control apparatus is configured to cause a gear ratio of the transmission mechanism to be changed and to cause the engine to be started after the gear ratio of the transmission mechanism has been changed.
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公开(公告)号：US10436304B2
公开(公告)日：2019-10-08
申请号：US15368036
申请日：2016-12-02
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kota Fujii , Yuji Yasuda , Atsushi Tabata , Haruhisa Suzuki , Koichi Okuda , Hiroyuki Tateno
Abstract: A tolerance ring is arranged between an output-side rotary shaft and a rotor shaft. For this reason, even when looseness in a spline fitting portion of the output-side rotary shaft and rotor shaft is not filled, both the output-side rotary shaft and the rotor shaft are held by the tolerance ring so as not to rattle. Therefore, it is possible to reduce tooth hammer noise that occurs in the spline fitting portion. An output-side rotary shaft has oil passages for supplying lubricating oil to a tolerance ring. Lubricating oil is forcibly supplied through these oil passages to an annular space in which a tolerance ring is accommodated.
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Patent Agency Ranking
公开(公告)号：US10190669B2
公开(公告)日：2019-01-29
申请号：US15421957
申请日：2017-02-01
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Kota Fujii , Atsushi Tabata , Haruhisa Suzuki , Koichi Okuda , Hiroyuki Tateno
Abstract: A tolerance ring is interposed between an output side rotary shaft and a rotor shaft. For this reason, even in a case where a backlash formed in a spline fitting portion between the output side rotary shaft and the rotor shaft is not eliminated, the rotary shafts of both of the output side rotary shaft and the rotor shaft are held by the tolerance ring without a backlash, and rattling noise can be suppressed. An oil supply groove for supplying a lubricant between an annular portion of the tolerance ring and the output side rotary shaft is provided inside an annular groove formed in the output side rotary shaft. With this, it is possible to suppress degradation of the durability of the tolerance ring without performing special processing on the tolerance ring.
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公开(公告)号：US20150239332A1
公开(公告)日：2015-08-27
申请号：US14373220
申请日：2012-01-20
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Koichi Okuda , Atsushi Tabata , Tatsuya Imamura , Keita Imai , Sho Mizushino
CPC classification number: B60K6/26 , B60K6/36 , B60K6/365 , B60K6/383 , B60K6/40 , B60K6/405 , B60K6/445 , B60K6/48 , B60K6/485 , B60K6/50 , B60K6/547 , B60K2001/006 , B60K2006/4825 , F16H41/00 , F16H41/02 , F16H45/00 , F16H45/02 , Y02T10/6221 , Y02T10/6226 , Y02T10/6252 , Y10S903/915
Abstract: A vehicle drive device includes: a torque converter having an input-side rotating member to which power from a prime mover is input and an output-side rotating member outputting power to drive wheels; an electric motor coupled to the input-side rotating member; a transmission coupled to the output-side rotating member of the torque converter; and a case member housing the torque converter, the electric motor, and the transmission, the case member having an air chamber and an oil chamber, the prime mover and the electric motor being disposed at positions with the torque converter interposed therebetween in an axial direction, the torque converter being housed in the air chamber, the electric motor being housed in the oil chamber the vehicle drive device further comprising a second electric motor coupled to the output-side rotating member of the torque converter, the second electric motor being disposed between the electric motor and the transmission in the axial direction in the oil chamber, an oil pressure generating device being disposed between the electric motor and the second electric motor in the axial direction in the oil chamber, and a drive gear of the oil pressure generating device being coupled to the input-side rotating member of the torque converter via a first shaft disposed in parallel with an axis on an inner circumferential side of the electric motor, a second shaft parallel to the axis being disposed on an inner circumferential side of the first shaft, a stator impeller of the torque converter being coupled via a one-way clutch and the second shaft to a cover member that is a non-rotating member of the oil pressure generating device, and the second shaft and the cover member being coupled, and an oil passage for supplying an operating oil to the torque converter being made up of a gap formed between an inner circumferential surface of the first shaft and an outer circumferential surface of the second shaft.
Abstract translation: 车辆驱动装置包括：变矩器，其具有输入侧来自原动机的动力的输入侧旋转部件和向驱动轮输出动力的输出侧旋转部件; 耦合到输入侧旋转构件的电动机; 连接到所述变矩器的输出侧旋转构件的变速器; 以及容纳所述变矩器，所述电动机和所述变速器的壳体构件，所述壳体具有气室和油室，所述原动机和所述电动机设置在所述变矩器的轴向方向的位置 所述变矩器被容纳在所述空气室中，所述电动机被容纳在所述油室中，所述车辆驱动装置还包括与所述变矩器的输出侧旋转部件连接的第二电动马达，所述第二电动机配置在 所述电动机和所述油室中的轴向的变速器，在所述油室中沿轴向配置在所述电动机和所述第二电动机之间的油压发生装置，以及所述油压生成装置的驱动齿轮 经由与内部轴线平行设置的第一轴联接到变矩器的输入侧旋转构件 所述电动机的周向侧，平行于所述轴线的第二轴设置在所述第一轴的内周侧，所述变矩器的定子叶轮经由单向离合器和所述第二轴联接到盖构件，所述盖构件 是油压发生装置的非旋转构件，第二轴和盖构件联接，并且用于向变矩器供给工作油的油路，该油通路由形成在液压发生装置的内周面之间的间隙 第一轴和第二轴的外周面。
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公开(公告)号：US20250164382A1
公开(公告)日：2025-05-22
申请号：US18937459
申请日：2024-11-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hideaki Bunazawa , Atsushi Tabata , Koichi Okuda , Yuuki Makino
IPC: G01N19/02
Abstract: The processing device of the information processing device includes: a first step of calculating a relative frequency distribution of the original data; a second step of setting time windows for clipping data of a part of the period of the original data; a third step of clipping data from the original data; a fourth step of calculating a relative frequency distribution in the extracted data; and a fifth step of calculating an error between the relative frequency distribution in the original data and the relative frequency distribution in the extracted data, and performs a search process of repeatedly performing the trial from the second step to the fifth step by changing the setting of the time windows. The processing device calculates an index value of the damage of the friction material of the transmission using the extracted data in which the error becomes the threshold value or smaller.
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公开(公告)号：US20240418255A1
公开(公告)日：2024-12-19
申请号：US18442536
申请日：2024-02-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Eiji ITO , Koichi Okuda , Atsushi Tabata
IPC: F16H57/038 , F16H57/02 , F16H57/029 , F16H57/04
Abstract: A drive device installed in a vehicle includes a case including an electric motor chamber, a terminal block chamber, and a gear chamber, an electric motor, a terminal block, a speed reducer, and a hypoid gear. A first through hole is provided in a partition wall between the electric motor chamber and the terminal block chamber. A second through hole is provided in a partition wall between the terminal block chamber and the gear chamber. The electric motor includes a rotor shaft extending from the electric motor chamber through the first through hole, the terminal block chamber, and the second through hole, to the gear chamber. A gap between the rotor shaft and the second through hole is sealed by an oil seal. A first lubricating oil is accommodated in the electric motor chamber and the terminal block chamber. A second lubricating oil is accommodated in the gear chamber.
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公开(公告)号：US12129805B2
公开(公告)日：2024-10-29
申请号：US18324213
申请日：2023-05-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Atsushi Tabata , Koichi Okuda , Masato Nakano , Yoshito Sekiguchi , Nobuhiko Satake
IPC: F02D19/02
CPC classification number: F02D19/029 , F02D2200/0406
Abstract: A hydrogen concentration calculating process calculates a hydrogen concentration in a specific portion of a target region based on an operating state of an internal combustion engine. The internal combustion engine uses hydrogen as fuel. A downstream passage is a portion of an intake passage of the internal combustion engine that is downstream of a throttle valve. A connecting passage connects a crank chamber of the internal combustion engine to the downstream passage. The target region is a region including the crank chamber and the connecting passage. When a condition is met, in which the hydrogen concentration is greater than or equal to a predetermined determination value, a pressure reduction process causes a pressure in the downstream passage to be lower than that at a point in time when the condition is met.
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