Patent ID: 9566857
Date: 2017-02-14
CPC Classifications: B60K,B60Y,F16H,Y02T,Y10S

Claim:
1. An electric drive unit for use in a powertrain system including first and second drivelines and a primary propulsion system for translating rotational torque to the first driveline, the second driveline including a pair of wheels, said electric drive unit comprising: an electric motor that acts to selectively generate rotational torque; a pinion disposed in selective rotational communication with said electric motor; a differential interposed in torque translating relationship between said pinion and the second driveline of the powertrain system for splitting rotational torque between said pinion and the wheels of the second driveline; a first planetary gearset disposed in selective torque translating relationship between said electric motor and said pinion; a second planetary gearset disposed in selective torque translating relationship between said first planetary gearset and said pinion; and a dog clutch assembly interposed in torque translating relationship between said pinion and said planetary gearsets, wherein said dog clutch assembly is movable between a first position wherein rotational torque from said electric motor is translated through said first planetary gearset and said dog clutch assembly to said pinion so as to drive the wheels of the second driveline at a first predetermined drive ratio, and a second position wherein rotational torque from said electric motor is translated through both of said planetary gearsets and said dog clutch assembly to said pinion so as to drive the wheels of the second driveline at a second predetermined drive ratio.