e CVT Operation e CVT Electronic Continuously Variable

e. CVT Operation e. CVT – Electronic Continuously Variable transmission e. CVT motors arranged in pairs (Toyota/Ford) Complex power electronics activate speed and torque functions 3 -phase AC electricity is industry standard practice Requires HV battery and inverter capabilities Power Split Device used to transfer supplied power appropriately (planetary gear set)

e. CVT Operation (Toyota)

e. CVT Operation (Toyota) MG 1 Recharges the HV battery Supplies drive power to MG 2 Controls CVT functions Starts ICE MG 2 Works with ICE to drive wheels Provides regenerative braking functions by converting kinetic energy into electrical energy (drive motor to generator functions) Towing w/front wheels on the ground will generate electricity Prius should be towed with front wheels off the ground for safety. Why?

Planetary Gear Set GEAR COMPONENT Sun=smallest Ring=medium Carrier=largest R/UD/DD/OD For reverse to occur, hold carrier* For UD to occur, smaller gear drives larger gear For DD to occur, input speed=output speed For OD to occur, larger gear drives smaller gear *Prius uses MG 2 to drive wheels in reverse

e. CVT Operation (Toyota)

e. CVT Operation (Toyota) Note phase count

e. CVT Operation (Toyota)