All wheel drive electric transmission
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorsWilliam F. WALTZ, Darren J. ZISKOVSKY, Jeffrey M. DAVID
Life of this patent
Estimating the term…
Abstract
Methods and systems for an electric drive. The electric drive system includes, in one example, an electric machine, and a multi-speed transmission rotationally coupled to the electric machine, rotationally coupled to two output shafts. The multi-speed transmission includes a differentiating meshed planet compound planetary gear set rotationally coupled and positioned coaxial to a mode planetary gear set and a mode clutch configured to shift between two operating modes.
Claims20
An electric drive system, comprising:
- an electric machine;
- a multi-speed transmission rotationally coupled to the electric machine, rotationally coupled to two output shafts, and including:
- a differential gear set rotationally coupled and positioned coaxial to a mode planetary gear set;
- and
- a mode clutch configured to shift between two operating modes.
A method for operating an electric drive system, comprising:
- operating a mode clutch to transition between two operating modes;
- wherein the electric drive system includes:
- an electric machine;
- a multi-speed transmission rotationally coupled to the electric machine, rotationally coupled to two output shafts, and including:
- a differential gear set rotationally coupled and positioned coaxial to a mode planetary gear set;
- and
- the mode clutch.
An electric drive system, comprising:
- an electric machine;
- a multi-speed transmission rotationally coupled to the electric machine, rotationally coupled to two output shafts, and including:
- a differential gear set rotationally coupled and positioned coaxial to a mode planetary gear set;
- and
- a mode clutch configured to:
- ground a carrier or a ring gear in the mode planetary gear set in a first mode, ground a sun gear in the mode planetary gear set in a second mode, and rotationally couple the carrier or the ring gear to the sun gear in the mode planetary gear set in a third mode;
- or
- ground a carrier or a ring gear that are included in the mode planetary gear set in a first mode, and rotationally couple the carrier to the ring gear in a second mode.
Dependencies are inferred from the claim text.