Several automakers experimented with equipping electric vehicles with multi-gear transmissions, but virtually none actually made it to production. The only two currently on sale are the Porsche Taycan and Audi E-Tron GT, but it looks like Toyota is also exploring the possibility, as was revealed by patents filed by the automaker.
It looks like Toyota wants to implement a solution that to us doesn’t seem to dissimilar to what you get when you convert an ICE vehicle to electric, but you keep the gearbox. Usually, these EV conversions are just left in a single gear (third or fourth, depending on the motor’s specification and maximum RPMs), so you don’t have to use the clutch because you don’t actually have to shift.
Toyota’s patent drawings and diagrams may appear a bit daunting and complicated to understand at first sight, but that’s the really simple version of what the manufacturer seems to want to do. The working principle for the system relies on a special controller that alters the torque of the electric motor in order to make it seem more gas car-like.
It does seem to mention a real clutch pedal that the driver will press in order to change gear by moving a physical shifter, although the text refers to these as ‘pseudo-shifter’ and ‘pseudo-clutch pedal’ hinting at the fact that they are not essential and that their role is to reproduce the feeling and the fun of a manual transmission in a vehicle that does not need it.
According to one of the patents;
The controller of the electric vehicle is configured to control the torque of the electric motor using the MT vehicle model based on the operation amount of accelerator pedal, the operation amount of the pseudo-clutch pedal and the shift position of the pseudo-shifter used by the operation of the reaction force actuator.
The controller is configured to store shift reaction force characteristic simulating the characteristic of the shift reaction force according to the operation of the shifter. Then, the controller is configured to control the shift reaction force output by the shift reaction force generator according to the operation of the pseudo-shifter using the stored shift reaction force characteristic.