Compact split torque transmission for wide overall ratio coverage
AssigneeGM Global Technology Operations LLC
InventorsChi Teck Lee, Christopher M. Kaminski, Kirk L. Wirth, Dan Coffey
Life of this patent
Estimating the term…
Abstract
An automobile vehicle split torque transmission includes an electrical motor having a rotor drive shaft with a drive pinion attached to the rotor drive shaft, the rotor drive shaft defining a first axis. A first transfer gear is mounted on a first transfer gear shaft defining a second axis, the first transfer gear meshed with the drive pinion. A second transfer gear is mounted on a second transfer gear shaft defining a third axis, the second transfer gear meshed with the drive pinion. A differential ring gear is supported on a differential shaft and rotates a differential assembly, the differential shaft defining a fourth axis.
Claims13
An automobile vehicle split torque transmission, comprising:
- an electrical motor having a rotor drive shaft with a drive pinion attached to the rotor drive shaft, the rotor drive shaft defining a first axis;
- a first transfer gear mounted on a first transfer gear shaft defining a second axis, the first transfer gear meshed with the drive pinion;
- a second transfer gear mounted on a second transfer gear shaft defining a third axis, the second transfer gear meshed with the drive pinion;
- a differential ring gear supported on a differential shaft and rotating a differential assembly, the differential shaft defining a fourth axis;
- a first bearing supporting the rotor drive shaft;
- a second bearing supporting the rotor drive shaft;
- a third bearing supporting the first transfer gear shaft;
- a fourth bearing supporting the first transfer gear shaft;
- a fifth bearing supporting the second transfer gear shaft;
- and
- a sixth bearing supporting the second transfer gear shaft,
- wherein the first bearing, the third bearing and the fifth bearing define free bearings, and wherein the second bearing, the fourth bearing and the sixth bearing define fixed bearings.
An automobile vehicle split torque transmission, comprising:
- an electrical motor having a rotor drive shaft;
- a drive pinion attached to the rotor drive shaft;
- a first transfer gear mounted on a first transfer gear shaft, the first transfer gear meshed with the drive pinion;
- a second transfer gear mounted on a second transfer gear shaft defining a third axis, the second transfer gear meshed with the drive pinion;
- a first final drive pinion mounted on the first transfer gear shaft and co-rotating with the first transfer gear;
- a second final drive pinion mounted on the second transfer gear shaft and co-rotating with the second transfer gear;
- and
- a differential ring gear supported on a differential shaft,
- wherein the first final drive pinion and the second final drive pinion are independently meshed with the differential ring gear defining a final drive gear rotating a differential assembly and a spline connects an I-beam-shaped body of the differential ring gear to the differential assembly.
Dependencies are inferred from the claim text.