公开(公告)号：US20210255061A1

公开(公告)日：2021-08-19

申请号：US17168383

申请日：2021-02-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke HASHIMOTO ,  Akihiro KATAYAMA ,  Naoya OKA

IPC: G01M15/11 ,  G06N7/00 ,  G06K9/62 ,  F02B77/08

Abstract: In a method for learning a mapping used by a computer, the mapping calculates a probability related to a categorization result using an internal combustion engine state variable as an input. The categorization result is a result of categorizing a state of an internal combustion engine into one of regions. The computer outputs the categorization result based on the calculated probability. The method includes inputting multiple training data to a training computer. The training data include the internal combustion engine state variable and the categorization result that is correct and associated with the internal combustion engine state variable. The method further includes updating the mapping based on the training data with the training computer. The training data are distributed to the regions and have a distribution density that is increased at locations closer to a border between the regions.

公开(公告)号：US20210231070A1

公开(公告)日：2021-07-29

申请号：US17151721

申请日：2021-01-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke HASHIMOTO ,  Akihiro KATAYAMA ,  Yuta OSHIRO ,  Kazuki SUGIE ,  Naoya OKA

IPC: F02D41/14 ,  F02D41/24 ,  F02D41/00

Abstract: A controller includes a memory device and an execution device, which executes an operation of an operated unit of an internal combustion engine. The execution device executes a first calculation process that uses adapted data sets in order to calculate an operated amount on the basis of a detected value of a state variable, a second calculation process that calculates, as the operated amount, a value that is determined by a relationship defining data set and the state variable, a reinforcement learning process that updates the relationship defining data set, first and operation processes that operate the operated unit in accordance with a calculated value of the operated amount, and a switching process that switches a process that operates the operated unit between the first operation process and the second operation process in accordance with the state of the vehicle.

公开(公告)号：US20210213966A1

公开(公告)日：2021-07-15

申请号：US17128822

申请日：2020-12-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke HASHIMOTO ,  Akihiro KATAYAMA ,  Yuta OSHIRO ,  Kazuki SUGIE ,  Naoya OKA

IPC: B60W50/06 ,  B60W40/12

Abstract: A vehicle control data generation method is provided. A preference variable indicates a relative preference of a user for two or more requested elements that include at least two of three requested elements including a requested element indicating a high acceleration response of a vehicle, a requested element indicating at least one of vibration and noise of the vehicle is small, and a requested element indicating a high energy use efficiency. The reward calculating process includes a changing process that changes a reward provided when a characteristic of the vehicle is a predetermined characteristic in a case where a value of the preference variable is a second value such that the changed reward differs from the reward provided when the characteristic is the predetermined characteristic in a case where the value of the preference variable is a first value.

公开(公告)号：US20200332747A1

公开(公告)日：2020-10-22

申请号：US16792952

申请日：2020-02-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Harufumi MUTO ,  Akihiro KATAYAMA ,  Yosuke HASHIMOTO ,  Kazuki TSURUOKA

IPC: F02M25/08 ,  G05B13/02

Abstract: At the time of stopping operation of the vehicle, the pressures inside of the fuel tank (5) and inside of the canister (6) detected at every constant time are stored in the storage device. A learned neural network using the pressures inside the fuel tank (5) and inside the canister (6) for each fixed time stored in the storage device and the atmospheric pressure as input parameters of the neural network and using a case where perforation occurs in the system causing fuel vapor to leak as a truth label is stored. At the time of stopping operation of the vehicle, a perforation abnormality causing fuel vapor to leak is detected from these input parameters by using the learned neural network.

公开(公告)号：US20190023263A1

公开(公告)日：2019-01-24

申请号：US16038568

申请日：2018-07-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  ADVICS CO., LTD.

Inventor： Takuya SHOJI ,  Yosuke HASHIMOTO

IPC: B60W30/02 ,  B60W10/18 ,  B60W40/114

Abstract: A behavior control apparatus for a vehicle having a control unit for controlling a braking device and controlling a behavior of a vehicle by controlling braking forces of wheels. When the vehicle is in the non-braking state, the control unit acquires information on a lateral acceleration of the vehicle; calculates, based on the lateral acceleration of the vehicle, a target yaw moment of a feedforward control for reducing a rate of decrease of the vehicle's yaw gain accompanying with an increase in an absolute value of a lateral acceleration of the vehicle, and controls braking forces of the wheels by controlling the braking device so that at least a yaw moment corresponding to the target yaw moment is applied to the vehicle.

公开(公告)号：US20180274428A1

公开(公告)日：2018-09-27

申请号：US15919928

申请日：2018-03-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshitaka NAKAMURA ,  Harufumi MUTO ,  Tomomi ONISHI ,  Yosuke HASHIMOTO ,  Koichi TSUJI

IPC: F01N11/00

CPC classification number: F01N11/007 ,  F01N11/00 ,  F01N2560/026 ,  F01N2900/0416 ,  F01N2900/1402 ,  F02D41/1463 ,  F02D41/222 ,  G01N27/4175 ,  G01N33/007 ,  Y02T10/47

Abstract: A NOx sensor abnormality detector for a NOx sensor includes a measurement chamber, a pump cell, and a sensor cell. The NOx sensor abnormality detector includes a signal receiving section configured to receive the detection value of the sensor cell, a reduction process executing section configured to execute a reduction process that reduces the discharge function of the pump cell, and an abnormality determining section configured to perform abnormality determination of the NOx sensor. The NOx sensor abnormality detector is configured to execute abnormality detection control in which the abnormality determining section performs abnormality determination of the NOx sensor based on the detection value of the sensor cell, which is input to the signal receiving section, after the reduction process executing section starts the reduction process.

公开(公告)号：US20210229688A1

公开(公告)日：2021-07-29

申请号：US17128505

申请日：2020-12-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke HASHIMOTO ,  Akihiro KATAYAMA ,  Yuta OSHIRO ,  Kazuki SUGIE ,  Naoya OKA

IPC: B60W50/06

Abstract: A vehicle control method applied to a system including a vehicle controller and a server configured to communicate with the vehicle controller is provided. The vehicle control method includes executing a state obtaining process that obtains a state of a vehicle, executing an operating process that operates an electronic device based on the state of the vehicle and operating data, executing an environment information obtaining process that obtains environment information, executing an environment determination process that determines whether traveling environment indicated by the environment information is changed, and when the environment determination process determines that the traveling environment is changed, executing a data changing process that causes the vehicle controller to obtain the operating data corresponding to the environment information from the server and causes a first storage device to store the operating data.

公开(公告)号：US20210229687A1

公开(公告)日：2021-07-29

申请号：US17146626

申请日：2021-01-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke HASHIMOTO ,  Akihiro KATAYAMA ,  Yuta OSHIRO ,  Kazuki SUGIE ,  Naoya OKA

IPC: B60W50/04 ,  G07C5/08

Abstract: A vehicle controller, a vehicle control system, a vehicle control method, and a vehicle control system control method are provided. An internal execution device of the vehicle controller detects that learning data stored by an internal memory device due to the occurrence of an anomaly in a vehicle. The internal execution device transmits, to the outside of the vehicle, a request signal that requests for previously-learned learning data, where learning is performed from an initial state of the learning data. The internal execution device causes the internal memory device to store the received previously-learned learning data instead of the reset learning data.

公开(公告)号：US20200378330A1

公开(公告)日：2020-12-03

申请号：US16840667

申请日：2020-04-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Harufumi MUTO ,  Yuki IKEJIRI ,  Akihiro KATAYAMA ,  Yosuke HASHIMOTO

IPC: F02D41/22 ,  F02M35/10 ,  F02M26/13 ,  F02D41/00 ,  F02D9/08 ,  G06N3/08 ,  G06N3/04

Abstract: A learned neural network in weights using at least the four parameters of the engine load, engine speed, intake pressure inside the intake passage downstream of the throttle valve (12), and amount of intake air fed into the engine as input parameters of the neural network and using a target EGR rate as training data is stored. At the time of engine operation, the learned neural network is used to estimate the target EGR rate from the above parameters and abnormality of the exhaust gas recirculation system is detected based on the difference between the estimated value of the target EGR rate and the target EGR rate.

公开(公告)号：US20200264074A1

公开(公告)日：2020-08-20

申请号：US16785739

申请日：2020-02-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke HASHIMOTO ,  Akihiro KATAYAMA ,  Yuta OSHIRO ,  Kazuki SUGIE ,  Naoya OKA

IPC: G01M15/11 ,  F02D41/14

Abstract: A state detection system for an internal combustion engine is provided. A detection mapping takes, as inputs, rotation waveform variables and a road surface state variable to output a combustion state variable. The rotation waveform variables include information on a difference between cylinders in the rotational speed NE of a crankshaft during periods in which the respective cylinders generate combustion torque. The combustion state variable relates to a level of variations in combustion state among the cylinders. A determination process performed by an execution device determines whether the internal combustion engine is in a predetermined operating state based on an output value of the detection mapping that takes, as inputs, values of the rotation waveform variables and a value of the road surface state variable.