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.
Claims20
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;
- and
- a differential ring gear supported on a differential shaft and rotating a differential assembly, the differential shaft defining a fourth axis.
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;
- a differential ring gear supported on a differential shaft;
- and
- the first final drive pinion and the second final drive pinion being independently meshed with the differential ring gear defining a final drive gear rotating a differential assembly.
A method for constructing an automobile vehicle split torque transmission, comprising:
- connecting a rotor drive shaft to an electrical motor;
- attaching a drive pinion to the rotor drive shaft;
- mounting a first transfer gear on a first transfer gear shaft;
- meshing the first transfer gear with the drive pinion;
- fixing a second transfer gear on a second transfer gear shaft;
- meshing the second transfer gear with the drive pinion;
- and
- supporting a differential ring gear on a differential shaft acting to rotate a differential assembly.
Dependencies are inferred from the claim text.