Toyota Jidosha Kabushiki Kaisha

Koichi Kondo

Yuji Iwase

Ryuji Ibaraki

Masahiro Kojima

Hiroshi Hata

Masatoshi Adachi

Takeshi Kanayama

Tsuyoshi Mikami

Masataka Sugiyama

Tomoyuki Maruyama

Kenji Odaka

Tatsushi Takenaka

Hitoshi Nomasa

Tetsuro Kuzuya

Keijiro Oshima

Takuji Kawabata

A hybrid vehicle driving device is capable of causing a motor-powered travel of a hybrid vehicle in which only an electric motor is used as a drive force source, by driving the electric motor with electric power from an electric storage device while a rotational driving of an internal combustion engine has been stopped. A control device for the hybrid vehicle driving device includes a rotational drive portion that determines whether or not supply of a lubrication oil to at least a portion of the power transmission device by the lubrication oil supply device is necessary based on a travel distance in the motor-powered travel following a stop of the rotational driving of the internal combustion engine, and rotationally drives the internal combustion engine based on determination as to need for the supply of the lubrication oil.

Control device for hybrid vehicle driving device, and control method for the driving device

A hybrid vehicle power transmission device provided with a power distribution mechanism composed of a planetary gear device for distributing motive power of a drive source to a motor and an output shaft is further provided with a damper device in a power transmission path between the power distribution mechanism and a first motor. Consequently, the damper device receives only reaction torque dealt by the first motor through the power distribution mechanism with respect to drive torque of an engine. Thus, since the torque transmitted to the damper device is smaller than the drive torque of the engine, the torque capacity of the damper device can be decreased and the size of the damper device can be reduced. As a result, the overall size of the power transmission device can be similarly reduced.

Hybrid vehicle power transmission device and hybrid vehicle

A torque fluctuation absorber, including: an output plate that is rotatably disposed; a first rotating plate disposed for movement in the direction of rotation of the output plate relatively from the output plate; a first elastic member engaged with the output plate and the first rotating plate and capable of transmitting the power applied to the first rotating plate to the output plate; a second elastic member to which the power from a power source is applied and capable of transmitting the power to the first rotating plate; and a power transmission control mechanism. The power transmission control mechanism is located radially outside the first elastic member about an axis of rotation. The second elastic member is spaced from the first elastic member and the power transmission control mechanism in the direction of the axis of rotation. The first elastic member and the second elastic member are arranged radially offset.

Torque fluctuation absorber

A hybrid vehicle may run with only the power from a motor MG, while an engine is at a stop. In this state, the control procedure drives a motor MGto rotate a crankshaft at an idling engine speed for a predetermined time period, when at least one of an observed oil temperature in a sump, an observed temperature of the motor MG, an observed temperature of the motor MG, an observed revolving speed of the motor MG, and an observed revolving speed of the motor MGis not less than a corresponding preset value. Rotation of the crankshaft at the idling engine speed results in driving an oil pump to feed a supply of lubricating oil to mechanical part of the power output apparatus including a power distribution integration mechanism.

Power output apparatus and hybrid vehicle with power output apparatus mounted thereon

A vehicle control apparatus for controlling a four-wheel-drive automotive vehicle of a type which comprises a first drive power source for driving one of a pair of front wheels and a pair of rear wheels, and a second drive power source for driving the other of the pairs of front and rear wheels, wherein an operator's desired value of a vehicle drive force for driving the automotive vehicle is obtained on the basis of an amount of operation of a manually operated vehicle accelerating member and a running speed of the vehicle, and a front drive force for driving the pair of front wheels and a rear drive force for driving the pair of rear wheels are controlled on the basis of a static and a dynamic state of the vehicle such that a sum of the front drive force and the rear drive force is equal to the obtained operator's desired value of the vehicle drive force.

Vehicle control apparatus for front and rear drive ratio on the basis of operator's desired vehicle drive force and static and dynamic vehicle states

Growing community of inventors

Toyoake, Japan

Koichi Kondo