Patent ID: 8840500
Filing Date: 2014-09-23
Classification: B60K,F16H,Y02T

Abstract:
1. An electro-mechanical drive unit connectable with multiple power sources for launching and propelling a vehicle, comprising: an output member; a stationary member; a gear-train; a torque-transmitting device; a compound planetary gear arrangement having a first junction point, a second junction point, a third junction point, and a fourth junction point; the power sources including: a first motor/generator; and a second motor/generator; wherein: the second motor/generator is operatively connected to the compound planetary gear arrangement at the first junction point via the gear-train; the output member is operatively connected with the compound planetary gear arrangement at the second junction point; the first motor/generator is operatively connected with the compound planetary gear arrangement at the fourth junction point; the torque-transmitting device is engageable to ground the third junction point to the stationary member; the compound planetary gear arrangement includes a first planetary gear set interconnected with a second planetary gear set; the first and second planetary gear sets each include a respective first, second, and third member; and two of the members of the first planetary gear set are interconnected with two of the members of the second planetary gear set.