公开(公告)号：US20210366210A1

公开(公告)日：2021-11-25

申请号：US17321754

申请日：2021-05-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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

IPC: G07C5/08 ,  G07C5/00 ,  G06F16/635 ,  G06F16/638

Abstract: Mapping data and data on individual difference variables are stored in a storage device. The mapping data are data that define a mapping including the individual difference variables and a sound variable in an input variable and including determination result variables in an output variable. The sound variable is a variable regarding noise generated by a vehicle, and the determination result variables are variables indicating a determination result of which of possible parts is the cause of the noise. A value of the input variable is acquired, the acquired value of the input variable is an input to the mapping to calculate a value of the output variable, and a notification device is operated to notify of a calculation result.

公开(公告)号：US20210341457A1

公开(公告)日：2021-11-04

申请号：US17210017

申请日：2021-03-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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

IPC: G01N33/28 ,  G07C5/04 ,  B60W50/029 ,  B60W40/12

Abstract: An oil condition estimation apparatus to be applied to a vehicle in which oil is agitated by a rotator includes a storage device and an execution device. The storage device stores mapping data for defining mapping. The mapping includes, as input variables, a speed variable indicating a rotation speed of the rotator, and a pressure variable indicating a pressure of the oil, and includes, as an output variable, an air bubble variable related to air bubbles contained in the oil. The execution device executes an acquisition process for acquiring values of the input variables, and a calculation process for calculating a value of the output variable by inputting, to the mapping, the values of the input variables acquired through the acquisition process.

公开(公告)号：US20210164562A1

公开(公告)日：2021-06-03

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

IPC: F16H61/12 ,  G07C5/08

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.

公开(公告)号：US20210108719A1

公开(公告)日：2021-04-15

申请号：US17069456

申请日：2020-10-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Tooru MATSUBARA ,  Hiromasa TATSUSHIRO ,  Kota FUJII

IPC: F16H61/06

Abstract: A vehicle control apparatus includes a learning control portion configured to execute a learning control operation, and to limit a learning value obtained through the learning control operation, by a guard value, and an update control portion configured to obtain a new guard value from an external device, and to update the guard value to the new guard value. The update control portion limits the learning value by the new guard value, prior to execution of the learning control operation, such that the learning value is rewritten, by the update control portion, to a value within a new guard-value range defined by the new guard value in a case in which the learning value is deviated from the new guard-value range, and such that the learning value is kept unchanged by the update control portion in a case in which the learning value is within the new guard-value range.

公开(公告)号：US20220018825A1

公开(公告)日：2022-01-20

申请号：US17369494

申请日：2021-07-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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

IPC: G01N33/28 ,  G01N21/25 ,  F16H57/04 ,  F15B19/00

Abstract: A deterioration estimation device includes a storage device and an execution device. The storage device is configured to store mapping data defining a mapping that outputs an output variable indicating the degree of deterioration of oil when an input variable is input. The mapping includes, as the input variable, a color variable that is a variable indicating a color of the oil and a hydrogen ion variable that is a variable indicating a hydrogen ion concentration of the oil. The execution device is configured to execute an acquisition process that is a process of acquiring the input variable and a calculation process of inputting the input variable acquired through the acquisition process to the mapping to output a value of the output variable.

公开(公告)号：US20210222768A1

公开(公告)日：2021-07-22

申请号：US17034761

申请日：2020-09-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kota FUJII ,  Yuki MAKINO ,  Toshiaki TAMACHI ,  Koji HAYASHI ,  Tooru MATSUBARA ,  Ken FUJIMOTO ,  Masato NAKANO

IPC: F16H57/04

Abstract: Because an EOP starts operating from when a decrease in discharge flow rate of an MOP is predicted or detected, a PL actual pressure that should be obtained with a PL command pressure set to a value for a required transmission torque is more easily maintained even when the discharge flow rate of the MOP becomes insufficient. After a lapse of a predetermined period of time from the start of operation of the EOP, the PL command pressure is temporarily set to a value higher than the value for the required transmission torque, and a regulator valve is controlled to operate to close a drain port. Therefore, the operation of the EOP in a high PL actual pressure is reduced, and a delay in response of a pressure regulating operation of the regulator valve in the process of reduction of the discharge flow rate of the MOP is reduced.

公开(公告)号：US20210174256A1

公开(公告)日：2021-06-10

申请号：US17108446

申请日：2020-12-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi TABATA ,  Koichi OKUDA ,  Tooru MATSUBARA ,  Hiromasa TATSUSHIRO ,  Kota FUJII ,  Yuuki MAKINO

IPC: G06N20/00 ,  B60W10/113 ,  B60W10/06 ,  B60R25/045

Abstract: A vehicle control apparatus for controlling a vehicle through a control program using at least one parameter. The at least one parameter is corrected by respective at least one correction value that is obtained after start of execution of a learning operation. The vehicle control apparatus includes: a learning-data storage portion configured to store, as learning data, the at least one correction value obtained after the start of the execution of the learning operation; and a learning-data rewrite portion configured, when the control program is updated, to execute a rewriting operation for rewriting the at least one correction value as the learning data from a pre-update correction value to a post-update correction value, such that the post-update correction value has the same sign as the pre-update correction value, and an absolute value of the post-update correction value is smaller than an absolute value of the pre-update correction value.

公开(公告)号：US20210146936A1

公开(公告)日：2021-05-20

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

IPC: B60W50/00 ,  F16H61/02 ,  F16H59/72 ,  G06N20/00

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.

公开(公告)号：US20220034398A1

公开(公告)日：2022-02-03

申请号：US17344369

申请日：2021-06-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kota FUJII ,  Atsushi TABATA ,  Koichi OKUDA ,  Ken IMAMURA ,  Hideaki BUNAZAWA ,  Keita SASAKI

IPC: F16H61/02

Abstract: A gear-shift control data generation method executed by an execution device in a state where relational regulation data used for regulating a relationship between a state of a vehicle and an action variable associated with an operation of a transmission is stored includes a process for acquiring the vehicle state, a process for operating the transmission, a process for assigning, based on the vehicle state, a higher reward when a characteristic of the vehicle satisfies a criterion than when the characteristic does not satisfy the criterion, and a process for updating the relational regulation data by inputting, to an update mapping, the vehicle state, a value of the action variable, and a reward corresponding to the operation. The update mapping outputs the relational regulation data that is updated to increase an expected profit for the reward when the transmission is operated according to the relational regulation data.

公开(公告)号：US20220018431A1

公开(公告)日：2022-01-20

申请号：US17369500

申请日：2021-07-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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

IPC: F16H59/72 ,  F01P11/16 ,  F16H57/04

Abstract: A device for a vehicle including: a memory configured to store mapping data including machine learning data defining a mapping that uses an estimation variable that is a variable indicating a vehicle operation status of the vehicle and a detection value of a sensor detecting an oil temperature of a power transmission device as input variables, and uses an element corresponding to the input variables as an output variable; and a processor configured to: acquire the input variables; use the mapping to acquire the element as the output variable of the mapping corresponding to the input variables; and determine based on the element whether the detection value becomes equal to or higher than a threshold value due to occurrence of an abnormality in the power transmission device or a mode of vehicle operation by the driver of the vehicle.