Toyota’s “eCVT” has no belt and no cones. The engine, two motor-generators and the wheels meet on a single planetary gearset (the power split device), and the gearset’s tooth counts fix how their speeds relate: MG1 = 3.6 × engine − 2.6 × ring. Pick a driving mode below and watch which part does the work. Numbers follow the Prius Gen 3 (P410) transaxle; road-load figures are typical estimates. For the ordinary belt CVT most Indonesian cars use, see Belt CVT: How It Works.
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How Toyota's eCVT Works
A 3D, take-apart simulator of the Prius hybrid transaxle: one planetary gearset splits engine power between the wheels and a generator, with live speeds, a lever diagram and power flow for every driving mode.
Drag to orbit, scroll to zoom. Best on a wide screen. Open full screen ↗