Vehicle transmission and method for operation of said transmission
AssigneeDana Belgium N.V.
InventorsJoachim VAN DINGENEN, Jessica VERSINI, Dries VERSTRAETE, Bert HANNON
Life of this patent
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Abstract
Methods and systems for a vehicle transmission are provided. In one example, a vehicle transmission system includes a first planetary gear set rotationally coupled to a second planetary gear set and a first electrical machine rotationally coupled to a gear in the first planetary gear set. The vehicle transmission system further includes a second electrical machine rotationally coupled to a gear in the second planetary gear set and a first clutch configured to selectively disconnect the first and second planetary gear sets from a drive axle.
Claims20
A vehicle transmission system, comprising:
- a first planetary gear set rotationally coupled to a second planetary gear set;
- a first electrical machine rotationally coupled to a gear in the first planetary gear set;
- a second electrical machine rotationally coupled to a gear in the second planetary gear set;
- and
- a first clutch configured to selectively disconnect the first and second planetary gear sets from a drive axle.
A method for operating a vehicle transmission system, comprising:
- during a first operating condition, operating a clutch to rotationally disconnect a first planetary gear set and a second planetary gear set from a drive axle;
- and
- during a second operating condition, operating the clutch to rotationally connect the first planetary gear set and the second planetary gear set to the drive axle;
- wherein the first planetary gear set is rotationally coupled to a first electrical machine;
- and
- wherein the second planetary gear set is rotationally coupled to a second electrical machine.
An electro-mechanical infinitely variable transmission (EMIVT) system, comprising:
- a first planetary gear set
- a neutral clutch configured to selectively disconnect the first and second planetary gear sets from a drive axle;
- an inverter electrically coupled to the first and second electrical machines;
- and
- a controller including executable instructions stored in non-transitory memory that, during an operating condition, cause the controller to:
- operate the neutral clutch to disconnect the first and second planetary gear sets from the drive axle.
Dependencies are inferred from the claim text.