Patent ID: 8152669
Filing Date: 2012-04-10
Classification: B60K,F16H,Y02T

Abstract:
1. An electrically-variable transmission for a vehicle, comprising: an input member; an output member; a stationary member; wherein the input member and the output member establish a first axis of rotation; a first and a second planetary gear set, each having a sun gear, a carrier rotatably supporting pinion gears, and a ring gear, with the pinion gears meshing with both the sun gear and the ring gear; a first and a second motor/generator; wherein the first motor/generator is connected for rotation with the sun gear of the first planetary gear set and the second motor/generator is connected for rotation with the sun gear of the second planetary gear set; a first torque-transmitting mechanism selectively engagable to ground the ring gear of the second planetary gear set to the stationary member; a second torque-transmitting mechanism selectively engagable to connect the sun gear of the first planetary gear set for rotation with the ring gear of the second planetary gear set; and wherein one of the first and second torque-transmitting mechanisms is a dog clutch with a synchronizer.