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

Hideaki Bunazawa

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

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

A cooling control device for an electrified vehicle comprising: a first electric oil pump for supplying oil to a first motor for driving a front wheel; and a second electric oil pump for supplying oil to a second motor for driving a rear wheel, wherein the device is capable of switching between a four-wheel drive travel mode and a two-wheel drive travel mode in which a second motor is used as a driving force source; wherein when a two-wheel drive travel mode is selected, the device starts operating the first electric oil pump when only the second electric oil pump is driven and it is predicted to run in a four-wheel drive travel mode.

Cooling control device for electrified vehicle

A vehicle including an internal combustion engine and an automatic transmission capable of transmitting and receiving torque to and from an output shaft of the internal combustion engine is controlled. During operation of the internal combustion engine, a process that calculates a diluted water amount based on an operation state of the internal combustion engine is executed. The diluted water amount is the amount of water contained in lubricating oil in the internal combustion engine. Further, a process that controls the automatic transmission such that torque per unit period in the internal combustion engine becomes smaller when the diluted water amount is relatively large compared to when the diluted water amount is relatively small, while continuing the operation of the internal combustion engine, is executed.

Controller and control method for vehicle

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.

Drive device

A drive apparatus for vehicle including a first power source, a first output rotating member, a second output rotating member, a second power source, a differential device, a first engagement device, a second engagement device, and a control device. The control device establishing, as drive modes driving a vehicle, a first drive mode putting the vehicle in all-wheel drive state by power from the second power source while fixing a torque distribution ratio between front wheels and rear wheels with both the first engagement device and the second engagement device kept in engaged state, and a second drive mode controlling the torque distribution ratio by putting the vehicle in all-wheel drive state by power from the first power source while controlling the second engagement device to be in slip state with the first engagement device kept in engaged state.

Drive apparatus for vehicle

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.

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.

Growing community of inventors

Okazaki, Japan

Atsushi Tabata