초록 ▼

An electric continuously variable transmission includes first and second planetary splitters each having a corresponding electric motor/generator. Both planetary splitters are integrally linked to an input shaft which transfers torque and rotational motion from a combustion engine. The electric moto

An electric continuously variable transmission includes first and second planetary splitters each having a corresponding electric motor/generator. Both planetary splitters are integrally linked to an input shaft which transfers torque and rotational motion from a combustion engine. The electric motor/generators switch between driving its corresponding planetary splitter and being driven by its corresponding planetary splitter to generate various ranges, providing variable transmission speed ratios. A lock-up clutch may be selectively engaged producing an overdrive range for cruising speeds. The electric continuously variable transmission drives a first differential which further drives a pair of wheels. A controller and battery are also provided for respectively managing the various electric motor/generators and either storing or providing energy for the system. Implementation of the electric continuously variable transmission in a hybrid vehicle is also possible with the addition of a second differential and a third electric motor/generator for driving the second differential.

대표청구항 ▼

1. A continuously variable transmission comprising:first and second planetary splitters; an input shaft in mechanical communication with each of said first and second planetary splitters; an output shaft in mechanical communication with each of said first and second planetary splitters; a first elec

1. A continuously variable transmission comprising:first and second planetary splitters; an input shaft in mechanical communication with each of said first and second planetary splitters; an output shaft in mechanical communication with each of said first and second planetary splitters; a first electric motor/generator for selectively driving or generating electrical energy from said first planetary splitters; and a second electric motor/generator for selectively driving or generating electrical energy from said second planetary splitter; wherein a low speed range operating mode is achieved through said second electric motor/generator generating electrical energy and feeding said electrical energy to said first electric motor/generator, a mid speed range operating mode is achieved through said first electric motor/generator generating electrical energy and feeding said electrical energy to said second electric motor/generator, and a high speed range is achieved through a lock-up clutch locking a component of said first planetary splitter and said second electric motor/generator generating electrical energy and feeding said electrical energy to said first electric motor/generator.