Patent ID: 8512189
Filing Date: 2013-08-20
Classification: B60K,Y02T

Abstract:
1. A hybrid powertrain for a vehicle that has a first axle and a second axle; wherein one of the axles is a front axle and the other of the axles is a rear axle, the hybrid powertrain comprising: an engine; a stationary member; an electrically-variable transmission having: an electric drive unit having: wherein the powertrain is operable in a compound-split operating mode with the engine on and one of the first motor/generator and the second motor/generator functioning as a generator to power the other of the first motor/generator and the second motor/generator which functions as a motor so that the first axle is a drive axle; and wherein the powertrain is operable in a launch mode in which the engine is on, one of the first motor/generator and the second motor/generator functions as a generator, the other of the first motor/generator and the second motor/generator receives a portion of a generated power from said one of the first motor/generator and the second motor/generator to function as a motor providing sufficient torque to prevent the first axle from rotating due to engine torque, and the third motor/generator receives a remaining portion of the generated power from said one of said first motor/generator and said second motor/generator to drive the second axle to launch the vehicle.