Two-speed robotized transmission

During the last two year of my bachelor’s degree, I was part of Project Phoebus, consisting in the development of a high performance electric car, based on a VW Golf.  I developed a two-speed robotized transmission to be used with a TM4 electric motor.

My work consisted in:

  • System level design of the powertrain and shift logic planning;
  • Design of a gear engagement mechanism, integrating actuators and sensors;
  • The development of a controller that synchronizes the motor velocity with the wheel during shifts;
  • The mechanical design of an aluminum housing that took 80 hours of machining to manufacture;
  • Its assembly and integration into the Phoebus electric car and road tests.

An automated gear-shift video: