Weber State University (WSU) - Automotive Technology Department - Transmission Lab. Toyota Prius Electronic Continuously Variable Transaxle (eCVT) model P112. How an eCVT Works. GM, Ford, and Nissan eCVTs are similar. The Honda Integrated Motor Assist System (IMA) is completely different.
eCVTs allow the engine to operate (when necessary) at the RPM for peak efficiency while increasing and decreasing the transmission drive ratio to change vehicle speed.
This video helps satisfy NATEF Task A2.C.24. "Describe the operational characteristics of a hybrid vehicle drive train. (eCVT)", a priority 3 task.
CVTs are different and are demonstrated in another WeberAuto video.
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This video was created and edited by John D. Kelly at WSU. For a full biography, see
http://www.weber.edu/automotive/John_Kelly.html 
