Patent ID: 6527659
Filing Date: 2003-03-04
Classification: B60K,B60L,B60W,B60Y,F16H,Y02T,Y10S

Abstract:
A two-mode input split hybrid electro-mechanical drivetrain coupled to drive an output shaft, the drivetrain including an engine, first and second electric machines, and first, second and third coupled and co-axially aligned gearsets, the improvement wherein:the first and second electric machines are co-axially aligned with the gearsets and disposed on opposite axial ends of the gearsets; the first electric machine is coupled to the first, second and third gearsets, the second electric machine is coupled to the third gearset, the engine is coupled to the first gearset, and the output shaft is coupled to the second gearset; the first gearset is coupled to the third gearset; the second gearset has a gear element that is selectively grounded to define a first mode of operation; and the third gearset has a gear element that is selectively coupled to the output shaft to define a second mode of operation.