公开(公告)号：US20240410464A1

公开(公告)日：2024-12-12

申请号：US18581693

申请日：2024-02-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masataka IWAMOTO ,  Koichi OKUDA ,  Atsushi TABATA

IPC: F16H57/04

Abstract: The drive device includes a first motor. The drive device includes a first rotational shaft that integrally rotates with a rotor of the first motor. The drive device includes a first counter shaft that is disposed parallel to the first rotational shaft and that is also connected to the first rotational shaft via a first counter gear. The drive device includes a first transmission shaft that is disposed coaxially with the first rotational shaft and that is also connected to the first counter shaft via a second counter gear. A series of oil channels is fashioned within the first rotational shaft and the first transmission shaft.

公开(公告)号：US20240200502A1

公开(公告)日：2024-06-20

申请号：US18492764

申请日：2023-10-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Nobuhiko SATAKE ,  Daiki SATO

IPC: F02D41/04 ,  F02D19/02

CPC classification number: F02D41/042 ,  F02D19/021 ,  F02D2041/1472

Abstract: A controller for a hydrogen engine is provided. Control circuitry performs, after a stop request for the hydrogen engine, a water reduction process that reduces a proportion of water vapor in exhaust gas. The control circuitry stops the hydrogen engine after operating the hydrogen engine with the water reduction process executed.

公开(公告)号：US20230252901A1

公开(公告)日：2023-08-10

申请号：US18161150

申请日：2023-01-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koichi OKUDA ,  Masafumi YAMAMOTO ,  Yoshito SEKIGUCHI ,  Yuuki MAKINO ,  Atsushi TABATA

IPC: G08G1/00 ,  B60W60/00 ,  B60W10/10

CPC classification number: G08G1/22 ,  B60W60/0025 ,  B60W10/10 ,  B60W2510/10

Abstract: A platooning system executes automatic follow-up running in line with a predetermined intervehicle distance between adjacent vehicles from a leading vehicle, the platoon participating vehicles each comprising a driving force source, an automatic transmission capable of shifting to a plurality of gear stages each having a different gear ratio, and an in-vehicle control device automatically controlling output of the driving force source and the gear stages of the automatic transmission, the platooning system comprising a platoon control device connected via wireless communication to the platoon participating vehicles, for managing at least shifting of the automatic transmission, the platoon control device executing platoon shift control that shifts the automatic transmission via the in-vehicle control device in order from vehicles on tail side among the platoon participating vehicles in case of satisfying shift conditions previously defined to allow the driving force source to work in a proper working range.

公开(公告)号：US20220410868A1

公开(公告)日：2022-12-29

申请号：US17659875

申请日：2022-04-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Koji TAKAIRA ,  Tatsuya IMAMURA ,  Yohei HABATA

IPC: B60W20/15 ,  B60W10/08 ,  B60W10/06

Abstract: It is determined whether fuel efficiency of a vehicle is improved by operating a first rotating machine to generate electricity to such an extent that an electrical path amount becomes a desired electrical path amount for controlling an operating point of an engine to a desired operating point and driving and operating a second rotating machine as a second power source, the electrical path amount being a magnitude of electric power in an electrical path through which the electric power is transferred between the first rotating machine and the second rotating machine. When the electronic control device determines that the fuel efficiency of the vehicle is improved, the first rotating machine is operated to generate electricity to such an extent that the electrical path amount becomes the desired electrical path amount and the second rotating machine is driven and operated as the second power source.

公开(公告)号：US20220388493A1

公开(公告)日：2022-12-08

申请号：US17804197

申请日：2022-05-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Koji TAKAIRA ,  Yuuki MAKINO ,  Akinori HOMAN ,  Yosuke AKIYAMA ,  Akira IJICHI ,  Kunihiko USUI

IPC: B60W20/15 ,  B60K6/52 ,  B60W20/13 ,  B60W10/06 ,  B60W10/08 ,  B60W10/119

Abstract: A vehicle driving apparatus includes: an engine; a first rotary electric machine; first and second output shafts; a power distribution device for distributing a power between the first and second output shafts; and a control device for controlling an electric-power generation torque of a second rotary electric machine such that a power distribution ratio between the first and second output shafts becomes a target distribution ratio, and controlling a total torque of the engine and the first rotary electric machine such that a requested drive torque is obtained. The control device executes an electric-power consuming control to supply at least a part of a generated electric power generated by the second rotary electric machine, to the first rotary electric machine without via a power storage device, and to drive the first rotary electric machine, such that an operation state of the engine is brought close to a fuel-economy optimum state.

公开(公告)号：US20220297545A1

公开(公告)日：2022-09-22

申请号：US17669835

申请日：2022-02-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Koji TAKAIRA ,  Yuki MAKINO ,  Akinori HOMAN ,  Yosuke AKIYAMA ,  Akira IJICHI ,  Kunihiko USUI

IPC: B60L7/26 ,  B60T8/26

Abstract: A vehicle drive device and a control method therefor are provided. The vehicle drive device includes: a power source including a first rotating electrical machine; a second rotating electrical machine; a differential unit including three rotating elements to which a first output shaft, a second output shaft, and the second rotating electrical machine are connected; and an electronic control device. The electronic control device regeneratively controls the first rotating electrical machine and the second rotating electrical machine in such a manner that negative torque is applied to the first output shaft and the second output shaft, when performing regenerative control by the second rotating electrical machine in a drive mode in which torque from the power source is distributed to the first output shaft and the second output shaft by controlling torque of the second rotating electrical machine during deceleration of a vehicle.

公开(公告)号：US20220266687A1

公开(公告)日：2022-08-25

申请号：US17673981

申请日：2022-02-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Koji TAKAIRA ,  Akinori HOMAN ,  Yosuke AKIYAMA ,  Akira IJICHI ,  Kunihiko USUI

IPC: B60K17/346 ,  F16H48/36

Abstract: A vehicle drive device includes a differential mechanism provided with a first rotating element connected to the first output shaft, a second rotating element connected to the second output shaft, and a third rotating element connected to the rotating electric machine and an engaging element that selectively engages any two of the first rotating element, the second rotating element, and the third rotating element. A control device controls torque from a rotating electric machine so as to change a torque distribution ratio at which torque from a power source is distributed to the first output shaft and the second output shaft, and changes the torque distribution ratio by controlling a torque capacity of the engaging element when the torque from an rotating electric machine is limited and thus a change in the torque distribution ratio is restricted.

公开(公告)号：US20220207934A1

公开(公告)日：2022-06-30

申请号：US17562189

申请日：2021-12-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Masafumi YAMAMOTO ,  Koichi OKUDA ,  Yuuki MAKINO

IPC: G07C5/08

Abstract: A particular-driving-operation identification system for identifying whether a failure or a durability reduction of a component installed in a vehicle has been caused by a driving operation of an occupant of the vehicle or not. The system includes a particular-driving-operation identification portion configured to determine whether there has been a particular driving operation that is the driving operation likely to cause the failure or the durability reduction of the component, based on a driving-operation data. When determining that there has been the particular driving operation in a case in which the failure or the durability reduction of the component has been caused, the particular-driving-operation identification portion identifies, based on a vehicle-state data related to the vehicle state, whether the failure or the durability reduction of the component has been caused by the particular driving operation or not depending on the vehicle state when the particular driving operation has been executed.

公开(公告)号：US20220018433A1

公开(公告)日：2022-01-20

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

IPC: F16H61/30 ,  F16H59/42 ,  F16H61/08

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.

公开(公告)号：US20210404551A1

公开(公告)日：2021-12-30

申请号：US17339476

申请日：2021-06-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kota FUJII ,  Atsushi TABATA ,  Koichi OKUDA ,  Ken IMAMURA

IPC: F16H61/12

Abstract: A fault evaluation device for an automatic transmission evaluates a fault of the automatic transmission. The fault evaluation device is used for a vehicle having the automatic transmission and a control device configured to execute a learning process for correcting a target pressure for oil to be supplied to the automatic transmission such that variations in acceleration of the vehicle during shifting of the automatic transmission are small. The fault evaluation device includes a processor and a memory. The memory stores mapping data that prescribe mapping. The processor is configured to output an output variable, which is an evaluation value that indicates the presence or absence of the fault of the automatic transmission, when an input variable is input.