Methods and systems for a gear box with multiple ratios
AssigneeDana Automotive Systems Group, LLC
InventorsGregory R. Andres, Mitchell R. Lawson, Marcelo Nakandakari, Andrew C. Shupe
Life of this patent
Estimating the term…
Abstract
Systems for an electric drive axle of a vehicle are provided. In one example, an electric drive axle system includes a gear box including a plurality of gear ratios. The plurality of gear ratios includes a fixed center distance measured from a carrier to an axle on which a plurality of gears or a plurality of pinions is arranged. Each pinion of the plurality of pinions is differently sized, wherein all pinions except for a largest pinion include a pinion baffle. Each gear of the plurality of gears is differently sized, wherein all gears except for a largest gear include a gear baffle.
Claims18
An electric drive axle system, comprising:
- a gear box comprising a fixed center distance measured from a first carrier to an axle on which a plurality of pinions are arranged and a second fixed center distance measured from a second carrier to a second axle on which a plurality of gears are arranged;
- a plurality of gear baffles, each of the plurality of gear baffles arranged at least partially around a gear of the plurality of gears and configured to reduce a size of a space between the gear and the second carrier, wherein each gear baffle of the plurality of gear baffles is differently sized;
- and
- a plurality of pinion baffles, each of the plurality of pinion baffles arranged at least partially around a pinion of the plurality of pinions and configured to reduce a size of a space between the pinion and the first carrier, wherein each pinion baffle of the plurality of pinion baffles is differently sized, and wherein a largest gear of the plurality of gears and a largest pinion of the plurality of pinions do not comprise a baffle.
An electric drive axle system, comprising:
- a gear box comprising a plurality of gear ratios, each gear ratio comprising a gear and a pinion, wherein each gear ratio comprises a baffle,
- wherein the plurality of gear ratios comprises a first gear ratio, a second gear ratio, and a third gear ratio, wherein a first gear of the first gear ratio is larger than a second gear of the second gear ratio which is larger than a third gear of the third gear ratio, and wherein each gear of the plurality of gear ratios, except for a largest gear, comprises a baffle.
An electric drive axle system, comprising:
- a gear train configured to rotationally couple to an electric motor-generator, the gear train comprising:
- a gear carrier comprising a plurality of differently sized gears, wherein the gear carrier is uniformly sized and shaped;
- and
- a plurality of differently shaped gear baffles, each of the plurality of gears, except for a largest gear, having a gear baffle of the plurality of differently shaped gear baffles, wherein each of the plurality of differently shaped gear baffles is configured to reduce a space between a gear and the gear carrier.
Dependencies are inferred from the claim text.