Gm Global Technolgoy Operations, Inc.

Steven Lee Hayslett

Shawn Harold Swales

Richard J Lannen

Peter Bostwick

Alan G Holmes

Goro Tamai

Edward L Kaiser

Constantin C Stancu

Wade W Bryant

Paul F Turnbull

Daniel J Berry

Cameron Philip Williams

Harry J Bauer

Jess R Bailie

Jiri Jager

Matthew D Laba

Jussi A Timonen

David Begleiter

Lawrence G Cole

Jeffrey Wentz Yambor

Chad A Freitas

Jorge G Cintron-Rivera

George D Dolan

Marek Riha

Pavel Koreckek

A number of variations may include a product that may comprise a gear set, and first, second and third mechanical mechanisms. Each mechanical mechanism may alternatively be open or closed and each may be connected to the gear set. The mechanical mechanisms may be variously open or closed providing a number of gear ratios through the gear set. A fourth mechanical mechanism or a fixed connection may be included. A mode of operation may be provided where the first, second and third mechanical mechanisms are open, and the fourth mechanical mechanism may be closed or the fixed connection may be provided.

Internal gear hub with selectable fixed gear for electric bike regen

A propulsion system may include an electric machine and a gear set that may be operatively connected with the electric machine. A crank shaft may extend through the electric machine and the gear set. A battery array may be disposed around the electric machine and the gear set.

Integrated mid drive electric bicycle propulsion system

A product may include a gear set that may have a first gear, a second gear that may be engaged with the first gear and a third gear. The third gear may be held from rotation and may be engaged with the second gear. A carrier may carry the second gear for rotation. A crank may be continuously connected with the carrier to provide input thereto. A torque measurement device may be connected to the third gear.

Mid drive electric bicycle powerflow with planetary gear overdrive and stepped pinion planetary

An electric cycle with a frame that may include a tube and an opening. The tube may extend from a first end to a second end and may define a tube interior volume in fluid communication with the opening. An electric power unit may be mounted to the frame proximal the second end of the tube and may have a cooling air inlet and an exhaust port. A cooling path may be defined through the tube interior volume and at least a portion of the electric power unit. The cooling path may be in fluid communication with the opening so that air may flow into the opening, through the tube, into the cooling air inlet and out of the exhaust port of the electric power unit.

Cooling method for E-bike power and energy systems

A number of variations may include an electric cycle powertrain comprising: a motor comprising a rotor and a stator; a crankshaft operatively connected to a first and second pedal assembly; a stepped planetary gear set comprising a sun gear, at least one stepped pinion gear having a first and a second portion operatively connected to each other and operatively connected to the sun gear, wherein the first portion rotates within a grounded first ring gear and the second portion rotates within a second ring gear; wherein the sun gear is connected to the rotor; wherein the second ring gear is operatively connected to the crankshaft and the first and second pedal assemblies; wherein the at least one stepped pinion gear are operatively connected to a carrier; and wherein the carrier is operatively connected to a chain ring operatively connected to a chain to drive a rear sprocket.

Electric bike powertrain compound planetary gear set and ring gear pedal torque reaction measurement

An electric machine assembly includes an electric machine including a rotor. A controller operatively connected to the electric machine and configured to receive a torque command. The rotor is configured to rotate at a rotor speed (&#x3c9;) based at least partially on the torque command. The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a cumulative rotor fatigue (F) based at least partially on the rotor speed. The controller is operative to control at least one operating paramater of the electric machine based at least partially on the cumulative rotor fatigue (F). The controller is configured to record respective occurrences of the rotor stress value exceeding respective predefined stress levels in chronological order to create a cycle dataset, such that the cycle dataset preserves a time order of the respective occurrences.

Determination of rotor fatigue in an electric machine assembly

A number of variations may include an electric cycle powertrain comprising: a motor comprising a rotor and a stator; a crankshaft operatively connected to a first and second pedal assembly; a stepped pinion planetary gear set comprising a sun gear, at least one stepped pinion gear having a first and second pinion operatively attached to each other, wherein the first pinion is operatively connected to the sun gear and rotates within a grounded first ring gear and the second pinion rotates within a second ring gear; wherein the sun gear is further operatively connected to the rotor; wherein the second ring gear is operatively connected to the crankshaft and the first and second pedal assembly; wherein the first and second pinions are operatively connected to a carrier; wherein the second ring gear is operatively connected to the chain; and a torque measuring device operatively connected to the crankshaft.

Electric bike powertrain with compound planetary

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.

Electric bike powertrain with dual planetary gear sets and ring gear pedal reaction torque measurement

A number of variations may include a product comprising: an extended range battery system for an electric bicycle comprising a first battery system and a second battery system, and wherein direct current biasing is utilized between the first battery system and the second battery system to extend the range of the extended range battery system.

Electric bike extended range battery power electronics and control

A number of variations may include a cable movement detector for determining a movement of a cable. A light source may be directed at the cable. A light detector may receive a reflection of the light source from the cable.

Electric bike optical shift detection and control

A number of variations may include a product comprising: an electric cycle powertrain comprising: a motor; at least one gear set operatively connected to the motor; a chain ring operatively connected to the at least one gear set and a chain; a rear sprocket operatively connected to the chain ring and a rear hub; a crank operatively connected to the chain ring and a first pedal assembly and a second pedal assembly; at least one controller and at least one sensor, wherein the at least one controller is constructed and arranged to process one or more signals from the at least one sensor to apply a torque to the motor to compensate for inertial and spin loss associated with the electric cycle powertrain.

Dynamic inertia compensation and pedal effort transformation for electric bike

A method for operating an electric machine of a ground vehicle includes periodically determining an aging parameter based upon a temperature of the electric machine and periodically determining a short-term aging effect based upon the periodically determined aging parameter. A long-term aging effect is determined based upon the short-term aging effect. A short-term temperature adjustment is determined based upon the short-term aging effect and a long-term temperature adjustment is determined based upon the long-term aging effect. A temperature-based derated motor torque is determined based upon the long-term temperature adjustment and the short-term temperature adjustment. Operation of the electric machine is controlled responsive to an operator command for torque based upon the temperature-based derated motor torque.

Method and apparatus for controlling an electric machine

A rotor assembly with a cooling mechanism having first and second channels is provided. The rotor assembly includes a shaft having a hollow portion and a rotor core having at least one rotor stack positioned at least partially around the shaft. The rotor core has a first end and a second end. The rotor stack forms an interior cavity which is only partially filled with a permanent magnet so as to define a gap in the rotor stack. The first channel is configured to direct fluid flow in a generally radial direction from the hollow portion of the shaft. The second channel is at least partially defined by the gap in the interior cavity of the rotor stack and is configured to direct the fluid flow from the first channel to at least one of the first and second ends of the rotor core.

Rotor assembly with cooling mechanism

A hybrid powertrain for a vehicle is provided that includes an engine having a crankshaft and a motor/generator operatively connected to the crankshaft. An elastic member is operatively connected to the crankshaft and configured to be wound by one of the engine or the motor/generator. A one-way torque-transmitting mechanism is operatively connected to a first end portion of the elastic member and configured to overrun prior to winding of the elastic member. The elastic member is configured to be releasable to allow unwinding of the elastic member to rotate the crankshaft to restart the engine. A method of starting an engine on a hybrid vehicle is also provided.

Growing community of inventors

Troy, MI, United States of America

Steven Lee Hayslett