×

Hybrid electric powertrain including a two-mode electrically variable transmission

  • US 6,478,705 B1
  • Filed: 07/19/2001
  • Issued: 11/12/2002
  • Est. Priority Date: 07/19/2001
  • Status: Expired due to Term
First Claim
Patent Images

1. A hybrid electric powertrain for driving an output member, the powertrain including an engine, first and second coupled and coaxially aligned gearsets, and first and second electric machines co-axially aligned with the gearsets, the improvement wherein:

  • the output member is coupled to a gear element of each of the first and second gearsets;

    the engine and first electric machine are differentially coupled to the first gearset;

    the second electric machine is coupled to a gear element of the second gearset; and

    a clutching mechanism selectively couples a gear element of the second gearset (1) to ground to define an input-split mode of operation, and (2) to the first electric machine to define a compound-split mode of operation.

View all claims
  • 14 Assignments
Timeline View
Assignment View
    ×
    ×