Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Other

Aisin Corporation

Denso Corpora Tion

Daisuke Kobayashi

Harufumi Muto

Shuntaro Okazaki

Naoto Kato

Toshinari Nagai

Noriyasu Adachi

Koji Ide

Takashi Suzuki

Michio Yoshida

Takahiro Uchida

Yasuhiro Oi

Akira Kamoto

Kenji Senda

Hirotsugu Yoshino

Tomoe Osada

Akinori Kitazume

Masaya Taki

Yasushi Kusaka

Satoshi Masuda

Akira Ohata

Shinya Kuwabara

Hirotaka Sunada

Satoshi Furukawa

Masahiro Mori

Shintaro Nakano

Yoichiro Higuchi

Takahito Yoshiura

Hiroyuki Miyake

Minekazu Sakai

Yuji Hattori

Ryoji Habuchi

Masaaki Tanaka

Masato Ehara

Hirofumi Nakada

Hisayo Dohta

Tomoya Jomori

Ryo Kano

Kazuaki Mawatari

Masao Nakayama

Yuichiro Ido

Yosuke Ogi

Hisashi Kameya

Ryuichiro Abe

Terumoto Ogasawara

Kazunori Kojima

Hiroyasu Ootake

Kazunori Harima

Yutaka Hayakawa

Yohei Moriyama

Takahiro Higuchi

Hideyuki Nishimi

Hideki Tsutsui

Akifumi Oosugi

Jyunichi Kako

Yosuhiro Oi

Shinji Satoh

Kohji Fujiwara

Masahiro Mohri

Yuji Koyama

Yuichiro C/O Toyota Techno Service Corp Ido

A piezoelectric element includes a plurality of vibration regions that are separated from each other by a slit, and the slit is formed to have a tapered portion that is tapered from a first surface of the vibration regions on an opposite side to a support to a second surface opposite to the first surface. An electrode film is positioned inside than the slit when being viewed from a normal direction orthogonal to the first surface, and an angle formed by a side surface of the tapered portion in the vibration region and a surface parallel to the first surface is in a range of 39 to 81 degrees.

Piezoelectric element, piezoelectric device, and method of manufacturing piezoelectric element

A superimposed image display device is configured to: acquire a recommended lane in which a vehicle is recommended to travel on a road on which the vehicle is currently traveling; identify a lane of travel that is a lane in which the vehicle is currently traveling on the road on which the vehicle is currently traveling; acquire a confidence indicating how confident an identification result of the lane of travel is; and display a guide object providing guidance on the recommended lane in a display mode according to the confidence.

Superimposed image display device

A power steering apparatus has a first actuator provided as a multi-phase rotating electric machine and disposed on a steering column side of an intermediate shaft and a second actuator disposed on a rack gear side thereof. A first ECU controls a drive of the first actuator and detects an abnormality of the first actuator. The first ECU changes an output of the first actuator based on a notification from a communication bus. The first ECU performs an initial diagnosis of the first actuator at a vehicle startup time for detecting abnormality, by supplying an electric power to the first actuator for not providing a torque to a steering wheel.

Power steering apparatus

A vehicle thermal energy control system that is able to achieve improved heat management in the entirety of a vehicle is provided. A thermal energy control system is provided in a vehicle and includes heat sources and a heat amount distributor configured to assign a demanded heat amount calculated from heat demands generated in the entirety of the vehicle, to each heat source on the basis of a suppliable heat amount of each heat source.

Vehicle thermal energy control system

A current sensor state determination device determines that an abnormality is caused in a current sensor when a sum of phase currents based on current detection values from each of the current sensors in three phases is greater than a first determination value, and determines that no abnormality is caused in the current sensor when the sum of phase currents is equal to or less than the first determination value. The state determination device determines that the current sensor is normal when it is determined that (i) no abnormality is caused in a preset electric angle range equal to or less than one electric-angle cycle of the rotating electric machine and (ii) a value of an electric current flowing in the rotating electric machine in a rotating coordinates system calculated based on the current detection value is equal to or greater than a second determination value.

Current sensor state determination device and in vehicle rotating electric machine system having same

An ignition timing control device includes a storage device that stores a normal signal generation model configured to output, upon receiving an output value of a knocking sensor, a noise-removed output value therefrom which an unlearned noise component value has been removed, and a first learned neural network pre-learned to output, upon receiving one of the output value of the knocking sensor and the noise-removed output value, an estimated value of a knocking intensity representative value, and a processor that acquires the estimated value by inputting the output value of the knocking sensor to the normal signal generation model and inputting the noise-removed output value to the first learned neural network, and executes retarding control of an ignition timing based on the acquired estimated value.

Ignition timing control device for internal combustion engine

A knocking sensor detecting vibration of an engine body and a pressure sensor detecting a pressure of a combustion chamber are provided. A value representing the knocking strength is acquired from output values of the pressure sensor. Weights of a neural network are learned using a value representing the vibration of the engine body detected by the knocking sensor as an input value of the neural network and using the acquired value representing the knocking strength as training data. The value representing the knocking strength is estimated from the output values of the knocking sensor by using the learned neural network.

Knocking detection system and knocking detection method of internal combustion engine

Current sensor state determination device and in-vehicle rotating electric machine system having same

An ignition timing control device includes bandpass filters each configured to pass and output only a specific frequency band for the output value of a knocking sensor, a storage device storing first learned neural networks configured to receive the output values of the bandpass filters in respective frequency band, and a processor. Each of the first learned neural networks is pre-learned to output an estimated value for a value representing knocking intensity when receiving the filtered output value of the bandpass filter. The processor calculates an optimal estimated value using a part of acquired estimated values for the value excluding a unique estimated value, and executes retarding control of an ignition timing based on the calculated optimal estimated value.

A fuel injection control device for an internal combustion engine includes an electronic control unit configured to execute division processing for learning for dividing a requested injection amount into an injection amount of partial lift injection of an in-cylinder injection valve and a port injection amount of injection of a port injection valve, detect, on the basis of at least one of a terminal electric potential of a coil and a current flowing through the coil, an inflection point of a change in induced electromotive force of the coil in time attributable to a decline in a relative speed of a mover with respect to the coil, and correct the energization processing at a time when the partial lift injection is executed based on a timing of the detection of the inflection point.

Fuel injection control device for internal combustion engine

A motor control device includes: a substrate on a heat sink; switching elements providing a power converter; a drive circuit IC having a pre-driver; a control circuit IC having a current control unit; first and second temperature detectors; and a temperature estimation unit of evaluation places. When the current control unit is halted after operation and is restarted after halt, the temperature estimation unit: stores estimated temperature and the first and second detected temperature at the halt; calculates, as an estimated gain, a ratio of a temperature difference at the halt to a temperature difference at restart; and estimates temperature at the restart based on a temperature difference obtained by multiplying a temperature difference between the first detected temperature and the estimated temperature at the halt by the estimated gain, and increased temperature.

Motor control device

A clutch is provided with a drive-side rotational body and a driven-side rotational body, which can move in the axial direction between a coupled position and a decoupled position. The driven-side rotational body has a groove having a helical portion and an annular portion that is deeper than the helical portion. The driven-side rotational body is urged toward the coupled position by an urging member. The driven-side rotational body is moved to the decoupled position against the urging force of the urging member by insertion of a pin into the helical portion. A projection is provided on the tip of the pin, and a recessed groove for accommodating the projection when the pin is inserted into the helical portion is provided in the bottom surface of the helical portion.

Clutch having a groove formed in an outer circumferential surface

A power transmission unit for a vehicle including a first clutch device that selectively allows a torque transmitting route from an input shaft to an output shaft via a first gear train to transmit torque therethrough, a dog clutch that switches the torque transmitting route from the input shaft to the output shaft between a continuously variable speed change route in which the torque is transmitted through a continuously variable transmission and a reverse route in which the torque is transmitted through a second gear train, and a second clutch device that connects and disconnects both of the continuously variable speed change route and the reverse route to/from at least any one of the input shaft and the output shaft.

Power transmission unit for vehicle

An annular groove is provided in a driving-side rotor of a clutch. Guide grooves are provided on a driven-side rotor of the clutch. By moving the driving-side rotor relative to the driven-side rotor, balls are moved that are accommodated in the spaces provided by the sections where the guide grooves and the annular groove face each other. Moving the balls toward the sections where the gap between the driving-side rotor and the driven-side rotor is narrow causes the balls to engage with the driving-side rotor and the driven-side rotor to achieve an engaged state. A disengaged state, in which engagement is cancelled, is achieved by moving the balls to the sections where the gap is wide.

Clutch

Growing community of inventors

Toyota, Japan

Daisuke Kobayashi