Vehicle hybrid wheel drive system
AssigneeDeere & Company
InventorHeinz Weiss
Life of this patent
Estimating the term…
Abstract
A vehicle drive system includes a generator driven by an internal combustion engine and a drive axle having a pair of wheels, each wheel being driven by an associated electric motor powered by the generator. The engine also drives a drive shaft which is coupled to the drive axle. The drive system also includes a pair of summing gears, each having an output shaft coupled to a respective wheel, and each summing gear having a first input coupled to the drive shaft and a second input coupled to the respective electric motor.
Claims5
A vehicle drive system for a vehicle having an engine driven generator, a first drive axle with a pair of wheels, each wheel being driven by a respective electric motor powered by the generator, the drive system comprising:
- a drive shaft driven by the engine and coupled to the first drive axle;
- a pair of summing gears, each summing gear having an output shaft coupled to a respective wheel, each summing gear having a first input coupled to the drive shaft and a second input coupled to the respective electric motor;
- and
- a change-speed gearbox coupled between the engine and the summing gear and shiftable between at least two transmission ratios.
A vehicle drive system for a vehicle having an engine driven generator, a first drive axle with a pair of wheels, each wheel being driven by a respective electric motor powered by the generator, the drive system comprising:
- a drive shaft driven by the engine and coupled to the first drive axle;
- a pair of summing gears, each summing gear having an output shaft coupled to a respective wheel, each summing gear having a first input coupled to the drive shaft and a second input coupled to the respective electric motor;
- and
- a final planetary speed reducing gear coupled to an output of the summing gear.
Dependencies are inferred from the claim text.