Patent ID: 8512187

Claim:
A transmission comprising: a transmission input shaft; a first planetary gear set comprising: a first sun gear, at least two first pinion gears meshed with the first sun gear, a first carrier coupled to the at least two first pinion gears and the transmission input shaft, and a first ring gear meshed with the at least two first pinion gears; a first electric motor coupled to the first sun gear; a second electric motor coupled to the first ring gear; an output gear; a reduction gear set coupled to the second electric motor, the reduction gear set comprising: a first gear coupled to the second electric motor, a second gear meshed with the first gear and coupled to a layshaft, and a third gear coupled to the layshaft and meshed with a reverse driver gear; a reverse idler gear meshed with the reverse driver gear; and a reverse driven gear meshed with the reverse idler gear, wherein the output gear is selectively coupled to the first electric motor to provide a first transmission gear ratio and selectively coupled to the second electric motor to provide a second transmission gear ratio, and the reverse driven gear is selectively coupled to the output gear to provide a reverse gear ratio, and the reverse driver gear is selectively coupled to the output gear to provide the second transmission gear ratio.