Axle assembly devices, systems, and methods
AssigneeArvinMeritor Technology, LLC
InventorsJohannes Bernoegger, Michael Hanneder, Silvia Grunwald
Life of this patent
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Abstract
A method of operating an electrified axle assembly includes selecting a reduction stage of a multistage reduction gear set in a split transmission assembly that is longitudinally split across the axle assembly. The method further includes selecting, corresponding to the selected reduction stage, a gear set from a plurality of selectable gear sets to cooperate with the selected reduction stage and provide one of at least three distinct transmission ratios.
Claims20
A split transmission assembly configured for use with an e-axle assembly that is configured to house the split transmission assembly and configured to connect to an electric motor at a housing of the split transmission assembly, the split transmission assembly comprising:
- a plurality of gear sets that are operatively connected to each other;
- wherein the housing of the split transmission assembly includes:
- an electric motor proximal side configured to interface with the electric motor and house a first gear set of the plurality of gear sets;
- an electric motor distal side that is arranged opposite to the electric motor proximal side and configured to support a second gear set and a third gear set of the split transmission assemblyplurality of gear sets;
- and
- a differential section arranged between the electric motor proximal and distal sides, the differential section being configured to receive at least one axle of the e-axle assembly, and
- wherein the first gear set is a multistage reduction gear set that is configured to cooperate with the second and third gear sets to provide at least three ratios that are distinct from each other.
A method of operating an e-axle assembly, the method comprising:
- selecting a reduction stage of a multistage reduction gear set in a split transmission assembly to provide a selected reduction stage, the split transmission assembly being longitudinally split across the e-axle assembly;
- and
- selecting, correspondingly to the selected reduction stage, a selected gear set from a plurality of selectable gear sets in the split transmission assembly to cause the selected reduction stage to cooperate with the selected gear set to provide one ratio of at least three ratios that are distinct from each other.
An e-axle assembly, comprising:
- an e-axle housing designed to house internal components of the e-axle assembly and configured to connect to an electric motor at an electric motor proximal side of the e-axle housing;
- a split transmission assembly that is configured to operatively mount to the electric motor for powering the transmission assembly, the split transmission assembly comprising:
- a multistage reduction gear set arranged proximate an electric motor proximal side of the e-axle housing;
- and
- two more gear sets arranged proximate an electric motor distal side of the axle housing;
- a shifting assembly that is configured to shift between gears of the transmission assembly;
- and
- a differential assembly that operatively connects to the split transmission assembly so as to transmit torque from the split transmission assembly to an axle of the e-axle assembly;
- wherein a first gear set of the one or more gear sets is the multistage reduction gear set that is arranged at the electric motor proximal side and is configured to cooperate with the two more gear sets arranged at the electric motor distal side to together provide at least three distinct ratios.
Dependencies are inferred from the claim text.