Hybrid and electric vehicle power transmission

Both hybrid and electrical vehicles have special power transmission requirements which stem from several needs, such as matching engine and motor speeds, shifting more frequently as dual power sources engage and disengage, and the need to provide both hill climbing and top speed capability when driving in all electric mode. Adapting traditional legacy transmission or gearbox approaches can work, but can also result in poor vehicle driveability, loss of efficiency, or excess vehicle weight and cost.

EDI supports requirements for hybrid and electric vehicles using all types of transmissions, but has also developed its own line of continuously variable transmissions (CVT) which provide high granularity and seamless shifting at very high efficiencies across a very broad range of vehicle performance. EDI's CVTs can be applied to both light duty and medium duty vehicles and can also be adapted to front or rear wheel drive configurations. These CVTs provide dramatic improvement in a vehicle's operation by reducing fuel and emissions as well as improving the all electric operation.