Toyota Jidosha Kabushiki Kaisha

Kenji Gotoda

Hiroki Kuwamoto

Koki Ueno

Koji Hayashi

Taku Harada

Tomoya Takeuchi

Akira Nakata

Yusuke Takasu

Kenji Miyasaka

Takahiro Komoda

Takayuki Nishida

A vehicle control device for a vehicle, the vehicle including a rotation lock mechanism preventing rotation of a coupling portion on the engine side of the rotating member in at least one direction, and an engine rotation speed sensor detecting a rotation speed of the engine, includes: a characteristic detecting portion detecting at least a torsional rigidity as the rotational characteristic by applying a torque to the rotating member from the electric motor to measure a twist angle of the rotating member while the rotation of the coupling portion is prevented by the rotation lock mechanism; and an engine rotation filtering portion calculating an actual resonance frequency based on the torsional rigidity detected by the characteristic detecting portion and filtering an engine rotation speed signal supplied from the engine rotation speed sensor to attenuate a vibration component of the actual resonance frequency in the engine rotation speed signal.

Vehicle control device

A vehicle control device for a vehicle provides a predetermined control based on the rotational characteristic, the vehicle including a rotation lock mechanism preventing rotation of a coupling portion of the rotating member coupled to the engine on the engine side of the rotating member in at least one direction, the vehicle control device comprising: a characteristic detecting portion detecting the rotational characteristic by applying a torque to the rotating member from the electric motor to measure a twist angle of the rotating member while the rotation of the coupling portion is prevented by the rotation lock mechanism; and a characteristic correspondence control portion setting a control value related to an engine rotation speed based on the rotational characteristic detected by the characteristic detecting portion to provide the predetermined control by using the control value.

A control apparatus for a vehicle is provided. The vehicle includes an engine, a first electric motor, a rotary member, and a rotation lock mechanism. The rotary member is provided between the engine and the first electric motor. The rotation lock mechanism is configured to prevent a coupling portion of the rotary member on the engine side from rotating in at least one direction. The control apparatus includes an electronic control unit. The electronic control unit is configured to learn characteristic associated with an input torque of the rotary member by applying a torque to the rotary member by the first electric motor and measuring a twist angle of the rotary member, with the rotation lock mechanism preventing the coupling portion from rotating.

Control apparatus for vehicle and control method for vehicle

In a control device of a hybrid vehicle including an engine and an electric motor serving as drive power sources and a damper device disposed between the engine and the electric motor and having rotational characteristics related to an input torque, the control device comprises: a damper rotational characteristic detecting portion configured to measure a rotational characteristic value of the damper device by allowing the electric motor to input a torque to the damper device while rotation of a crankshaft of the engine is stopped; and an output torque correction control portion configured to control an output torque of the engine or the electric motor to suppress occurrence of vibration based on a difference between the rotational characteristic value of the damper device detected by the damper rotational characteristic detecting portion and a preset initial setting value of the rotational characteristic value of the damper device.

Control device of hybrid vehicle

A control apparatus for a vehicle provided with an engine, an electric motor, and a damper disposed in a power transmitting path between said engine and said electric motor, wherein said engine is started with its speed being raised by a drive force of said electric motor, wherein said damper has characteristics of generating a larger hysteresis torque during its torsion in a negative direction of transmission of the drive force from said electric motor toward said engine, than a hysteresis torque generated during its torsion in a positive direction of transmission of a drive force from said engine toward said electric motor, said control apparatus comprising a hybrid control portion configured to ignite said engine by igniting said engine in the process of a rise of the speed of said engine while said damper is subjected to the torsion in the negative direction by said electric motor.

Control apparatus for a vehicle

A control device for a hybrid vehicle is equipped with an engine, an electric motor, and a damper that is interposed in a motive power transmission path between the engine and the electric motor. The control device is equipped with a hysteresis mechanism and a controller. The hysteresis mechanism is provided in the damper, is configured to have a characteristic that a hysteresis torque that is generated due to a twist of the damper, which transmits a driving force from the electric motor toward the engine, in a negative direction is larger than a hysteresis torque that is generated due to a twist of the damper, which transmits a driving force from the engine toward the electric motor, in a positive direction, and is configured to reduce an engine rotational speed by the electric motor in stopping the engine. The controller is configured to cause a torque, of the electric motor to be output such that the damper assumes a state of being twisted in the negative direction when a torque in such a direction as to drive the engine is applied from the electric motor in stopping the engine.

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Nagakute, Japan

Kenji Gotoda