Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Aishin Aw Co., Ltd.

Other

Aisin Aw Kabushiki Kaisha

Toyota Jidosha Kabuhsiki Kaisha

Nok Corporation

Toyoda Jidosha Kabushiki Kaisha

Toyota Jidosha Kabushiki Kasiha

Toyota Jidsoha Kabushiki Kaisha

Atsushi Tabata

Tooru Matsubara

Koichi Okuda

Tatsuya Imamura

Kenta Kumazaki

Yutaka Taga

Yuji Iwase

Ryuji Ibaraki

Hiroyuki Shibata

Yasuo Hojo

Kota Fujii

Atsushi Kamada

Yasuhiro Hiasa

Yuji Inoue

Terufumi Miyazaki

Masato Kaigawa

Toshiki Kanada

Takeshi Kitahata

Masakazu Kaifuku

Keita Imai

Ken Imamura

Masafumi Yamamoto

Akira Hoshino

Kagenori Fukumura

Atsushi Honda

Hirofumi Ota

Akiharu Abe

Haruhisa Suzuki

Yuji Yasuda

Masahiko Ando

Yasutaka Tsuchida

Hiroshi Hata

Shunya Kato

Akira Fukatsu

Koji Takaira

Tsuyoshi Mikami

Kazumasa Tsukamoto

Hidehiro Oba

Shuji Nagano

Hideki Miyata

Kiyonori Takagi

Hiromichi Kimura

Hideo Tomomatsu

Kazutoshi Nozaki

Kazuyuki Noda

Masahiro Hayabuchi

Kazuyuki Shiiba

Kazuhisa Ozaki

Kunihiko Usui

Akinori Homan

Yoshihisa Yamamoto

Tetsuya Shimizu

Masahiro Kojima

Masaya Amano

Satoru Kasuya

Masashi Hattori

Tomohito Ono

Takeshi Inuzuka

Hiroji Taniguchi

Tomoo Atarashi

Fumitomo Yokoyama

Yasunari Nakamura

Kazunori Ishikawa

Koichiro Muta

Makoto Funahashi

Yoshikazu Tanaka

Hiroyuki Shioiri

Masahiro Hasebe

Hideaki Komada

Shuzo Moroto

Satoru Wakuta

Mikio Iwase

Masami Kondo

Shigeki Takami

Yoshihito Kanno

Yoshimitsu Hyodo

Nobukazu Ike

Shigeo Tsuzuki

Yasunori Nakawaki

Kenji Omote

Kenji Niwa

Kojiro Kuramochi

Yoshihiro Iijima

Masaya Yamamoto

Kunihiro Iwatsuki

Hiroshi Kato

Yukihiko Ideshio

Seitoku Kubo

Katsumi Kono

Takao Taniguchi

Akira Murakami

Takashi Ohta

Makoto Ogiso

Eiji Ito

Ryoji Habuchi

Kenji Shirai

Masashi Kito

Koji Hayashi

Minoru Todo

Hiroki Morita

In a vehicle drive device, a second power source is connected to a first rotating element of a differential mechanism. The other output shaft of a first output shaft and a second output shaft is connected to a third rotating element so as to be disconnectable and connectable by a disconnection-connection mechanism. A control device places the disconnection-connection mechanism in a disconnected state. When a second traveling mode in which the third rotating element is fixed to a fixing member through engagement of a first engaging element is switched to a first traveling mode in which the disconnection-connection mechanism is placed in a connected state, the control device disengages the first engaging element, executes synchronous control in which rotational speeds of the other output shaft and the third rotating element are synchronized by a second engaging element, and switches the disconnection-connection mechanism from the disconnected state to the connected state.

Vehicle drive device

A mapping, which is as a subject of learning, is a learning model that uses a sound signal as an input variable and outputs a variable indicating the cause of a sound in a vehicle. A learning method includes a signal correction process that corrects a sound signal by superimposing a noise signal on the sound signal, and an update process that updates the mapping through machine learning in which the sound signal corrected in the signal correction process serves as training data and a cause of a sound paired with the sound signal serves as teaching data.

Method for learning mapping

A training method includes: a simulation step outputting, by a simulator, a characteristic variable based on an input parameter set, the parameter set being input to the simulator and indicating that a specific component is presumed to have an abnormality in advance; and a training step updating, by a training device, mapping based on an input training data and an input teaching data, the input variables being input to the training device as the training data, the input variables including the characteristic variable output in the simulation step, the abnormality determination variable being input to the training device as the teaching data, the abnormality determination variable indicating that the specific component has the abnormality.

Method for training a mapping for outputting an abnormality determination variable for a specific component mounted on a vehicle

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.

Platooning system

A plurality of driving force transmitting components of the same kind is categorized into a plurality of groups depending on a frequency range with the loudest operation sound. A component selection device stores mapping data that is data that defines mapping learned by machine learning. When the user-related information is input as an input variable, the mapping outputs a value corresponding to the input variable as an output variable. The vehicle component selection method causes the component selection method to execute: an input process inputting the user-related information into the mapping as the input variable; a selection process selecting the group corresponding to the output variable output by the mapping from the groups; and a determination process determining the driving force transmitting component categorized into the group selected in the selection process as a component to be installed in the vehicle for the user identified by the user-related information.

Vehicle component selection method

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.

Drive device

The drive device comprises first and second motors comprising respective first and second rotary shafts. The drive device comprises first and second counter shafts connected to each of the first and second rotary shafts via first and second counter gears. The drive device comprises first and second transmission shafts connected to each of the first and second counter shafts via third and fourth counter gears. The drive device comprises first and second drive shafts connected to each of the first and second transmission shafts via first and second hypoid gears. The first and second rotary shafts are located between the first and second counter shafts with respect to the vehicle width direction. The first and second transmission shafts are located between the first and second counter shafts in the vehicle width direction.

A sound-source search system for searching a sound source that causes a noise propagated inside or outside a cabin of a vehicle. The system includes: a sound-source search device for acquiring sound data by collecting and measuring a sound; an informing device for informing a sound measuring position in which the sound-source search device should be installed for collecting and measuring the sound; and a control device for acquiring a driving information related to a driving state of the vehicle upon generation of the noise. The control device extracts a sound-source candidate that is a candidate of the sound source causing the noise, based on the acquired driving information, and to cause the informing device to inform the sound measuring position that is set based on a predetermined relationship between the sound-source candidate and the sound measuring position. Also disclosed is a sound-source search method using the sound-source search device.

Sound-source search system and sound-source search method

A driving apparatus includes: a first power source; a fluid transmission device; a first output shaft for receiving a power transmitted from the fluid transmission device through a first power transmission path and outputting the power to drive wheels of a vehicle; a rotary electric machine connected to the first output shaft and/or the drive wheels, through a second power transmission path; and a control device. When the vehicle is stopped or running at an extremely low speed, with a rotary-electric-machine driving mode being established, the control device is configured, upon determination that a drive request amount is larger than a threshold amount value, to place a direct clutch of the fluid transmission device into an engaged state and to place the first power transmission path into a power transmittable state so as to cause the power of the first power source to be outputted to the first output shaft.

Driving apparatus for vehicle

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.

Vehicle controller, vehicle control method, and storage medium

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.

A software update system according to one embodiment of the present disclosure is configured to update software used in a vehicle based on update data of the software, the update data being transmitted to the vehicle from an external device that is communicably connected to the vehicle. The software update system includes: a software update unit configured to update the software based on the update data; a vehicle data acquisition unit configured to acquire respective pieces of second vehicle data about states of the vehicle before and after the software update by the update unit; and an effect evaluation unit configured to evaluate an effect of the software update based on the respective pieces of second vehicle data before and after the software update.

System, device and medium for evaluating the effect of a vehicle software update

A software update system includes: a vehicle data acquiring unit configured to acquire data on a state of a vehicle including data of a predetermined performance of the vehicle; an effect predicting unit configured to predict an effect on the predetermined performance which is obtained when update data of software used in the vehicle for improvement of the predetermined performance is applied to the vehicle based on the data acquired by the vehicle data acquiring unit; and a delivery unit configured to deliver the update data to the vehicle when the effect predicted by the effect predicting unit satisfies a predetermined reference and to withhold delivery of the update data to the vehicle when the effect predicted by the effect predicting unit does not satisfy the predetermined reference.

Information processing system, information processing device, information processing method, and recording medium

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.

Vehicle drive device and control method therefor

A controller for an engine includes processing circuitry. The processing circuitry executes an obtaining process that obtains a catalyst temperature, which is a temperature of a catalyst. The processing circuitry executes a setting process that sets a target air-fuel ratio that is a target value of an air-fuel ratio in the cylinder. The temperature of the catalyst at which an efficiency of nitrogen oxide reduction by the catalyst is the highest is referred to as a prescribed temperature. In the setting process, the processing circuitry sets the target air-fuel ratio to be higher when the catalyst temperature is a first value that is lower than the prescribed temperature, than when the catalyst temperature is a second value that is lower than or equal to the prescribed temperature and higher than the first value.

Controller and control method for engine

Growing community of inventors

Okazaki, Japan

Atsushi Tabata