Toyota Jidosha Kabushiki Kaisha

Hiromasa Tatsushiro

Tooru Matsubara

Atsushi Tabata

Koichi Okuda

Kota Fujii

Kenta Kumazaki

Yuuki Makino

Shinichi Sasade

Hiromichi Kimura

Masato Yoshikawa

Nobufusa Kobayashi

Kazuyuki Shiiba

Takeshi Kitahata

Takahiro Kimura

Daisuke Suyama

Tomoyasu Kimura

While a vehicle is traveling in an automatic driving mode, an auto-driving oil pressure changing unit makes the engagement pressure of hydraulic oil supplied to a release-side engagement device to be released during a downshift of a stepwise shifting unit, higher than the engagement pressure set during traveling in a manual driving mode, so that retraction of the acceleration due to a drop of drive torque during the downshift is reduced. At this time, an auto-driving rotating machine controller makes drive-side MGtorque generated from a second rotating machine, larger than that generated during traveling in the manual driving mode, so as to speed up the progress of the downshift, and prevent retraction of the acceleration from being prolonged.

Control system of vehicle

A vehicle control device performs learning to correct a parameter used in a control program for controlling a vehicle. The vehicle control device stores learning data obtained by the learning in a storage unit. The vehicle control device determines whether or not a part controlled by the parameter has been replaced, and resets the learning data stored in the storage unit when it is determined that the part has been replaced. The vehicle control device determines that the part has been replaced based on an adjustment that is performed upon replacement of the part. The vehicle control device quickly mitigates degradation of the controllability of the vehicle after replacement of the part.

Vehicle control device

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.

Vehicle anomaly analysis apparatus

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.

Vehicle control apparatus

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.

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.

Control apparatus for vehicle

A controller and a control method for a vehicle including an engine with a supercharger and an automatic transmission provided in a power transmission path between the engine and driving wheels are provided. The controller is configured to perform learning control of learning a command value associated with gear shifting of the automatic transmission. The controller is configured to limit a supercharging pressure of the supercharger when the automatic transmission is performing gear shifting to be equal to or less than a predetermined pressure until initial learning which is performed by the learning control unit in a predetermined period after the vehicle has been manufactured is completed.

Controller and control method for vehicle

A control apparatus () for a vehicle provided with a motor/generator (MG; MG) functioning as a drive power source, and a step-variable transmission () which constitutes a part of a power transmitting path between the drive power source and drive wheels () and which is placed in a selected one of a plurality of speed positions with engagement of a selected one or ones of a plurality of coupling devices (CB). The control apparatus includes: a torque control portion () configured to control an output torque (Ti) of the drive power source (MG) during a shifting action of the step-variable transmission () from one of the speed positions to another of the speed positions, on the basis of a required vehicle drive torque (Tidem) corresponding to an operation amount (&#x3b8;acc) of an accelerator pedal, such that a value representing a state of a rotary motion of an input rotary member () of the step-variable transmission coincides with a target value; and a torque limiting portion () configured to limit the required vehicle drive torque to a predetermined lower limit value (Tif) in the process of a shift-up action of the step-variable transmission which is performed by placement of the accelerator pedal in an operated position.

A vehicle control device for a vehicle including an engine used as a power source and an automatic transmission, the vehicle control device performing a first running mode in which a shift control of the automatic transmission and a drive force control are provided according to a driver's acceleration/deceleration operation and a second running mode in which the shift control and the drive force control are provided without the acceleration/deceleration operation while a target running state is set, comprising: a slope-road running control portion configured to control the automatic transmission such that an engine rotation speed is kept high during slope-road running on at least one of an uphill road and a downhill road as compared to flat-road running, the slope-road running control portion limiting an increase amount of the engine rotation speed in the second running mode as compared to the first running mode.

Growing community of inventors

Toyota, Japan

Hiromasa Tatsushiro