Hybrid drive unit for vehicles

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the fourth rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• an electric circuit for allowing exchange of electric power among individual motor generators;
• and
• a first hybrid control means for transmitting engine torque to the fourth rotary element by operating the second motor generator as a motor or a generator to establish reactive force against the engine torque, while transmitting a torque of the third motor generator to the wheel or the another wheel by operating the third motor generator as a motor, in case of controlling the speed of the fourth rotary element lower than that of the first rotary element while transmitting the engine torque to the first rotary element.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the fourth rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• an electric circuit for allowing exchange of electric power among individual motor generators;
• and
• a hybrid control means for transmitting at least one of the torque of the second and third motor generators to the wheel or the another wheel, by operating the first motor generator as a generator to establish the reactive force against the engine torque, and by operating at least one of the second and third motor generators as a motor, in case of controlling the speed of the fourth rotary element higher than that of the first rotary element while transmitting the engine torque to the first rotary element.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the fourth rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• and
• an electric circuit for allowing exchange of electric power among individual motor generators,
• further comprising:
• a brake for selectively halting revolutions of the first rotary element and the engine;
• and
• a hybrid control means for allowing the brake to function as a reaction element against at least one of the second and third motor generators, by using the brake to halt the revolutions of the first rotary element and the engine, in case at least one of the second and third motor generators functions as a motor and the torque thereof is transmitted to the wheel.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• an electric circuit for allowing exchange of electric power among individual motor generators;
• and
• a hybrid control means for operating at least one of the first and second motor generators as a generator to establish the reactive force against the engine torque, in case the engine torque is inputted to the first rotary element and transmitted to the wheel through the fourth rotary element.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• and
• an electric circuit for allowing exchange of electric power among individual motor generators,
• wherein:
• the power distribution device comprises two sets of planetary gear mechanisms having an input element, an output element, and a reaction element capable of rotating differentially with one another;
• the engine is connected to the input element of each planetary gear mechanism;
• the front wheel is connected to the output element of each planetary gear mechanism;
• the first motor generator is connected to the reaction element of one of the planetary gear mechanism;
• and
• the second motor generator is connected to the reaction element of the other planetary gear mechanism.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• and
• an electric circuit for allowing exchange of electric power among individual motor generators,
• wherein:
• the power distribution device is constructed of:
• a single pinion type planetary gear mechanism comprising a first sun gear as an external gear, a first ring gear as an internal gear arranged concentrically with the first sun gear, and a first carrier holding a pinion gear meshing with the first sun gear and the first ring gear;
• and
• a double pinion type planetary gear mechanism comprising a second sun gear as an external gear, a second ring gear as an internal gear arranged concentrically with the second sun gear, and a second carrier holding at least one pair of a pinion gear which is meshing with each other and which placed between the second sun gear and the second ring gear;
• and
• the first motor generator is connected with the first sun gear, the second motor generator is connected with the second sun gear, the engine is connected with the first and second carriers, and both first and second ring gears are connected with the wheel.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• an electric circuit for allowing exchange of electric power among individual motor generators;
• and
• a first hybrid control device for transmitting engine torque to the second rotary element by operating the second motor generator as a motor or a generator to establish reactive force against the engine torque, while transmitting a torque of the third motor generator to the wheel or the another wheel by operating the third motor generator as a motor, in case of controlling the speed of the second rotary element lower than that of the first rotary element while transmitting the engine torque to the first rotary element.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• an electric circuit for allowing exchange of electric power among individual motor generators;
• and
• a hybrid control device for transmitting at least one of the torque of the second and third motor generators to the wheel or the another wheel, by operating the first motor generator as a generator to establish the reactive force against the engine torque, and by operating at least one of the second and third motor generators as a motor, in case of controlling the speed of the second rotary element higher than that of the first rotary element while transmitting the engine torque to the first rotary element.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• and
• an electric circuit for allowing exchange of electric power among individual motor generators,
• further comprising:
• a brake for selectively halting revolutions of the first rotary element and the engine;
• and
• a hybrid control device for allowing the brake to function as a reaction element against at least one of the second and third motor generators, by using the brake to halt the revolutions of the first rotary element and the engine, in case at least one of the second and third motor generators functions as a motor and the torque thereof is transmitted to the wheel.

A hybrid drive unit for vehicles, in which an engine, a first motor generator, and a wheel are connected to a power distribution device having a plurality of rotary elements capable of rotating differentially with each other, and which is capable of steplessly controlling a speed change ratio as a speed ratio of the rotary element connected to the engine and the rotary element connected to the wheel, wherein:

• the power distribution device comprises a first rotary element functions as an input element, a second rotary element capable of functioning as a reaction element, a third rotary element capable of functioning as an another reaction element, and a fourth rotary element functions as an output element;
• the engine is connected to the first rotary element, the first motor generator is connected to the second rotary element, and the wheel is connected to the second rotary element;
• and
• comprising:
• a second motor generator connected to the third rotary element;
• a third motor generator connected to any of said wheel and an another wheel;
• an electric circuit for allowing exchange of electric power among individual motor generators;
• and
• a hybrid control device for operating at least one of the first and second motor generators as a generator to establish the reactive force against the engine torque, in case the engine torque is inputted to the first rotary element and transmitted to the wheel through the fourth rotary element.