Toyota Jidosha Kabushiki Kaisha

Akihito Hayasaka

Nobufusa Kobayashi

Masato Yoshikawa

Seiji Masunaga

Keigo Matsubara

Akio Sugawara

Takehiro Komatsu

Koki Minamikawa

Masayuki Matsui

Hisashi Ito

Shotaro Yamada

A control apparatus for an electric vehicle that includes (i) an electric motor, (ii) a high-low switching device configured to establish a high gear position or a low gear position, (iii) a center differential configured to transmit rotation outputted from the high-low switching device, to the front and rear wheels, while allowing differential rotation between the front and rear wheels, and (iv) a high-low selection device configured to select the high gear position or low gear position that is to be established in the high-low switching device. The control apparatus includes a creep control portion configured to execute a creep control for generating a creep torque during stop of the vehicle. The creep control portion executes a creep cut for stopping the creep control under a predetermined constant condition, and stops the execution of the creep cut when the low gear position is selected during execution of the creep cut.

Control apparatus for electric vehicle

A hybrid electric vehicle comprising: an engine; a filter for collecting particulate matter from the engine; a motor provided on a power transmission path between the engine and the drive wheels; a torque converter having a lock-up clutch provided on the power transmission path between the motor and the drive wheels; and a control device, wherein the control device includes: a first determination unit that determines whether there is a request for regeneration control of the filter by a fuel cut in the engine; a second determination unit that determines whether the lock-up clutch cannot be engaged; and a regeneration control unit that, when an affirmative determination is made in the first determination unit and a negative determination is made in the second determination unit, executes auxiliary regeneration control that assists the rotation of the engine by the motor while releasing the lock-up clutch and executing the fuel cut.

Hybrid electric vehicle

A control device of a vehicle, the vehicle having: a power source including an engine and an electric motor; and a power transmission shaft to which the power source is coupled in a power transmittable manner; the vehicle comprising: a power transmission device transmitting a torque of the power source input to the power transmission shaft, to driving wheels; and an electric-power accumulator supplying/receiving electric power to/from the electric motor, the control device comprising: a power source control unit performing charge control for increasing a torque of the engine that achieves a drive demand amount during running of the vehicle in a driving state; and a charge limit control unit performing charge limit control for limiting a charging power in the charge control.

Control device of vehicle

In a driven state phase, target input torque is limited to a first limit value, whereas in a backlash-elimination state phase, the target input torque is limited to a second limit value and target engine torque and torque of a motor-generator are controlled according to the target input torque. In the backlash-elimination state phase, the target input torque is limited to the second limit value that is suitable for mitigating rattling shock, so that rattling shock can be appropriately mitigated. Meanwhile, in the driven state phase, the target input torque is limited to the relatively high first limit value, so that an MG rotation speed can be quickly increased to eliminate a rotational difference, which enhances the responsiveness of driving power up to when required driving power is obtained after elimination of the backlash.

Vehicle control device

A control apparatus for a vehicle that includes an engine, an electric motor, a clutch for separating connection between the engine and the electric motor, and a fluid-type transmission device including a lockup clutch and transmitting drive powers of the engine and the electric motor to drive wheels. The control apparatus includes (a) a portion configured, during motor running of the vehicle with the clutch being released, to calculate a predicted value of a rotational speed of the electric motor, depending on an operation state of the lockup clutch; (b) a portion configured to calculate a predicted value of an outputtable maximum torque of the electric motor, by using the predicted value of the rotational speed of the electric motor; (c) a portion configured to determine whether start of the engine is requested or not, by using the predicted value of the outputtable maximum torque of the electric motor.

Control apparatus for vehicle

A transmission gear control apparatus for a vehicle is provided. The vehicle includes an automatic transmission, a torque converter, and an accelerator operation amount sensor. The torque converter is disposed between the engine and the automatic transmission. The transmission gear control apparatus includes an electronic control unit. The electronic control unit is configured to: (i) control switching of a transmission gear stage of the automatic transmission at least on a basis of a change in vehicle speed of the vehicle; (ii) control lockup of a lock-up clutch of the torque converter on a basis of a state of the vehicle; and (iii) control the automatic transmission when the accelerator operation amount is equal to or larger than a specified value such that an upshift of the automatic transmission is performed at a higher vehicle speed as a rotation difference between input and output of the torque converter is reduced.

Growing community of inventors

Toyota, Japan

Akihito Hayasaka