Electric bike powertrain with dual planetary gear sets and ring gear pedal reaction torque measurement
AssigneeGM Global Technology Operations LLC
InventorsSteven L. Hayslett, Shawn H. Swales, Richard J. Lannen, Jussi A. Timonen
Life of this patent
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Abstract
A number of variations may include an electric cycle powertrain having a first planetary gear set and a second planetary gear set, wherein the second planetary gear set is constructed and arranged to selectively overdrive a pedal cadence and wherein the first planetary gear set is constructed and arranged to selectively provide additional gear ratio for a motor.
Claims20
An electric cycle powertrain having a motor, a first planetary gear set and a second planetary gear set, wherein the second planetary gear set is operatively attached to a crank assembly and is constructed and arranged to selectively overdrive a pedal cadence and wherein the first planetary gear set is operatively attached to the motor and is constructed and arranged to selectively provide additional gear ratio for the motor, and wherein the first planetary gear set and the second planetary gear set are located within the motor.
An electric cycle comprising:
- a crankshaft;
- a first pedal assembly and a second pedal assembly operatively connected to the crankshaft;
- a chain ring operatively connected to the crankshaft;
- a chain operatively connected to the chain ring;
- a rear sprocket operatively connected to the chain and a rear hub;
- a motor comprising a stator and a rotor operatively connected to the crankshaft;
- a battery pack adjacent to and operatively connected to the motor;
- a first planetary gear set operatively connected to the motor and positioned within the motor, wherein the first planetary gear set is constructed and arranged to selectively provide additional gear ratio for the motor;
- and
- a second planetary gear set operatively connected to the first pedal assembly and the second pedal assembly and positioned within the motor, and wherein the second planetary gear set is constructed and arranged to selectively overdrive a pedal cadence.
Dependencies are inferred from the claim text.