Transmission and vehicle using same
First Claim
1. A transmission including a plurality of differential mechanisms in which motors control a difference in the number of revolutions between an input shaft and an output shaft thereof, said input shaft and said output shaft for said plural differential mechanisms being used in common, wherein gear ratios from said input shaft to said output shaft in said plural differential mechanisms are set at a value different to each other, and gear ratios from said input shaft to the motors in said plural differential mechanisms are set at a value different to each other.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle provided with an engine 1 which generates a driving energy for the vehicle, planetary gears 4 and 6 comprising sun gears, planet gears and ring gears, motors 8 and 9 for respectively controlling the sun gears, and a clutch 14, the planet gears being connected to an input shaft driven by the engine and the ring gears connected to an output shaft for driving wheels, wherein gear ratios from the input shafts to the output shafts in the planetary gears 4 and 6 are set at a value different to each other. A stepless speed changing function which permits vehicular operation in a high engine efficiency region while minimizing an electrical energy loss is realized by a small-sized transmission using small-sized motors. The vehicle, which uses the transmission, can be operated in a high engine efficiency region while keeping an electrical energy loss to a minimum.
47 Citations
12 Claims
-
1. A transmission including a plurality of differential mechanisms in which motors control a difference in the number of revolutions between an input shaft and an output shaft thereof, said input shaft and said output shaft for said plural differential mechanisms being used in common, wherein gear ratios from said input shaft to said output shaft in said plural differential mechanisms are set at a value different to each other, and gear ratios from said input shaft to the motors in said plural differential mechanisms are set at a value different to each other.
-
2. A transmission including first and second planetary gears each comprising at least three components of a sun gear, a planet gear and a ring gear;
- first and second motors for respectively controlling the sun gears in said first and second planetary gears;
input shafts connected to the planet gears in said first and second planetary gears respectively; and
output shafts connected to the ring gears in said first and second planetary gears respectively;
wherein gear ratios from said input shafts to said first and second motors are set at a value different to each other.
- first and second motors for respectively controlling the sun gears in said first and second planetary gears;
-
3. A transmission including first and second planetary gears each comprising at least three components of a sun gear, a planet gear and a ring gear;
- first and second motors for respectively controlling the sun gears in said first and second planetary gears;
at least one of input shafts connected to at least one of the ring gears in said first and second planetary gears; and
at least one of output shafts connected to at least one of the planet gears in said first and second planetary gears;
wherein gear ratios from said input shafts to said first and second motors are set at a value different to each other.
- first and second motors for respectively controlling the sun gears in said first and second planetary gears;
-
4. A transmission including an input shaft which inputs a driving force;
- an output shaft which outputs a driving force;
first and second planetary gears each comprising a sun gear, a planetary gear and a ring gear; and
first and second motors for respectively controlling the sun gears in said first and second planetary gears;
wherein the planet gear in said first planetary gear and the ring gear in said second planetary gear are connected to said input shaft, while the ring gear in said first planetary gear and the planet gear in said second planetary gear are connected to said output shaft.
- an output shaft which outputs a driving force;
-
5. A transmission including a plurality of differential mechanisms in which motor shafts are driven by motors to control a difference in the number of revolutions between an input shaft and an output shaft thereof, said input shaft and said output shaft for said plural differential mechanisms being used in common, wherein gear ratios from said input shaft to said output shaft in said plural differential mechanisms are set at a value different to each other, and there is further included a locking/unlocking mechanism for locking and unlocking the motor shaft in at least a differential mechanism of a larger gear ratio of said plural differential mechanisms.
-
6. A vehicle including an engine which generates a driving energy for driving the vehicle and a transmission which changes the rotational speed of said engine and transmits a driving force to wheels, said transmission including at least first and second differential mechanisms which input a driving force generated by said engine and which output a driving force for the wheels, and first and second motors for respectively controlling said first and second differential mechanisms, wherein gear ratios from input shafts to output shafts in said first and second differential mechanisms are set at a value different to each other, and gear ratios from said input shafts to said first and second motors are set at a value different to each other.
- 7. A vehicle including an engine which generates a driving energy for driving the vehicle and a transmission which changes the rotational speed of said engine and transmits a driving force to wheels, said transmission including at least first and second differential mechanisms which input a driving force generated by said engine and which output a driving force for the wheels, and first and second motors for respectively controlling said first and second differential mechanisms, wherein a gear ratio from an input shaft to an output shaft in said first differential mechanism is set at a value larger than a gear ratio from the input shaft to the output shaft in said second differential mechanism, and there is further included a locking/unlocking mechanism for locking and unlocking a motor shaft which transmits a driving force of at least said first motor to said first differential mechanism.
Specification