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US 8,739,930 B2Granted
Gearbox comprising gear pump
AssigneeGM Global Technology Operations LLC
InventorsJörg Bönning, Jan Sporleder
Life of this patent
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Abstract
A gearbox for a motor vehicle is provided that includes, but is not limited to an input shaft, an output shaft and a plurality of wheel sets for coupling input and output shaft with different transmission ratios and a gear pump, which is arranged to for delivering from a reservoir of the gearbox. The gear pump is an outer gear pump and one of two gears of the gear pump meshing with one another belongs to one of the wheel sets.
Claims14
A gear pump for a gearbox of a motor vehicle, said gear pump comprising:
- a first gear arranged on a gearbox shaft to rotate with said gearbox shaft while maintaining axial play along said gearbox shaft;
- a second gear meshing with said first gear in a meshing region;
- and
- a gear pump housing enclosing said second gear and a part of said first gear, wherein
- said gear pump housing is movable in the axial direction of said gearbox shaft such that said gear pump housing can follow movement of said first gear within the gearbox due to the axial play of said first gear along said gearbox shaft.
2 more elements
Dependencies are inferred from the claim text.