Electric continuously variable transmission and methods therefor
AssigneeDana Belgium N.V.
InventorsJoachim Van Dingenen, Kurt Cattoor, Filip Van Raepenbusch
Life of this patent
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Abstract
In one example, an assembly is provided comprising a transmission at least partially enclosed in a housing. The transmission includes a planetary gear set coupled to a multispeed sub-transmission. The planetary gear set is configured to be coupled to a first electric machine and an internal combustion engine on a first side, and configured to be coupled to a second electric machine on a second side, where the first side and the second are defined by a vertical plane that is perpendicular to a central axis of rotation of the planetary gear set. The first electric machine, the second electric machine, and the internal combustion engine are arranged outside of the housing.
Claims16
An assembly, comprising:
- a transmission at least partially enclosed in a housing, the transmission comprising a planetary gear set coupled to a multispeed sub-transmission, the planetary gear set configured to be coupled to a first electric machine and an internal combustion engine on a first side, and configured to be coupled to a second electric machine on a second side, the first side and the second side defined by a vertical plane that is perpendicular to a central axis of rotation of the planetary gear set, wherein the first electric machine, the second electric machine, and the internal combustion engine are arranged outside of the housing, and further comprising a battery configured to be coupled to the first electric machine and the second electric machine, the internal combustion engine coupled to the transmission via a different input shaft than each of the first electric machine and the second electric machine, wherein the internal combustion engine, the first electric machine, and the second electric machine are each positioned on a same side of the vertical plane.
A transmission comprising:
- a planetary gear set comprising a sun gear, a carrier, a ring gear, and a carrier output shaft;
- a first transmission input shaft directly connected to the ring gear, the first transmission input shaft configured to be coupled to an internal combustion engine;
- a second transmission input shaft coupled with the carrier, the second transmission input shaft configured to be coupled to a first electric machine;
- a third transmission input shaft coupled with the sun gear, the third transmission input shaft configured to be coupled to a second electric machine;
- a PTO shaft coupled with the first transmission input shaft and selectively engaged, via at least a first PTO clutch, with the first transmission input shaft;
- a multispeed sub-transmission directly connected to the carrier output shaft and a second shaft;
- and
- a housing comprising the multispeed sub-transmission and the planetary gear set;
- wherein at least a portion of the first transmission input shaft, the second transmission input shaft, and the third transmission input shaft are arranged outside of the housing.
A method for a transmission comprising a planetary gear set coupled to a multispeed sub-transmission, wherein the multispeed sub-transmission selectively couples a power path between a carrier output shaft of the planetary gear set and a shaft, and wherein the planetary gear set is configured to be coupled to a first electric machine and an internal combustion engine on a first side, and configured to be coupled to a second electric machine on a second side, the first side and the second side defined by a vertical plane that is perpendicular to a central axis of rotation of the planetary gear set, the method comprising:
- receiving one or more operating conditions;
- selecting a mode of operation based on the one or more operating conditions;
- and
- adjusting at least one of a plurality of clutches based on the mode of operation, wherein the internal combustion engine, the first electric machine, and the second electric machine are each positioned on a same side of the vertical plane.
Dependencies are inferred from the claim text.