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US 12,157,365 B2Granted
Electric powershifting transmission with power take-off
AssigneeDana Belgium N.V.
InventorJoachim Van Dingenen
Life of this patent
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Abstract
A method and system for operating a transmission that includes a power take off is described. The transmission selectively delivers mechanical power to the power take off from one of two electric traction motors via selective engagement of either a first or a second power take off clutch based on drive mode. The transmission also allows for powershifting between a first and second operating gear.
Claims19
A transmission system, comprising:
- a first electric machine rotationally coupled to a first shaft;
- a first set of gear clutches coupled the first shaft, wherein the first set of gear clutches comprises a first gear clutch and a second gear clutch;
- a second electric machine rotationally coupled to a second shaft;
- a second set of gear clutches coupled to the second shaft, wherein the second set of gear clutches comprises a third gear clutch and a fourth gear clutch;
- and
- a power take-off (PTO) gear arrangement comprising a first PTO gear set including a first gear coupled to a first PTO clutch that is selectively coupled to the first shaft, wherein the first gear meshes with a second gear of the PTO gear arrangement, the second gear being rotationally coupled to an input shaft of a PTO.
3 more elements
A method for operation of a transmission system, comprising:
- selectively delivering mechanical power to a PTO via selective engagement of a first power take-off (PTO) clutch based on a drive mode of the transmission system, wherein the transmission system includes:
- a first electric machine rotationally coupled to a first shaft;
- a first set of gear clutches coupled the first shaft, the first set of gear clutches comprising a first gear clutch and a second gear clutch;
- a second electric machine rotationally coupled to a second shaft;
- and
- a second set of gear clutches coupled to the second shaft, the second set of gear clutches comprising a third gear clutch and a fourth gear clutch, wherein the first PTO clutch selectively engages the first shaft and is coupled to a first gear that meshes with a second gear, wherein the second gear rotationally couples to a PTO shaft coupled to the PTO.
3 more elements
An electric drive transmission, comprising:
- a first traction motor rotationally coupled to a first shaft;
- a first pair of gear clutches coupled the first shaft, wherein the first pair of gear clutches comprises a first gear clutch comprising a first gear and a first dog clutch and a second gear clutch comprising a second gear and a second dog clutch;
- a second traction motor rotationally coupled to a second shaft;
- a second pair of gear clutches coupled to the second shaft, wherein the second pair of gear clutches comprises a third gear clutch comprising a third gear and a third dog clutch and a fourth gear clutch comprising a fourth gear and a fourth dog clutch;
- a first power take-off (PTO) clutch selectively coupled to the first shaft;
- a second PTO clutch selectively coupled to the second shaft;
- and
- a controller including instructions stored in non-transitory memory that when executed, during reverse drive operation or a powershifting transient, cause the controller to:
- operate the first and second PTO clutches to deliver mechanical power to a PTO.
6 more elements
Dependencies are inferred from the claim text.