Full-Toroidal Traction Drive Variator Material and Fluid Durability

Lee, Adrian P.

doi:10.4271/2011-01-1424

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Both CVT systems transmit torque based on mechanical contacts, inducing slip and friction. This requires lubrication and the need for traction fluid to transmit torque between metal parts [3], [4]. The gear ratio is restricted due to geometrical constraints of the design, requiring a clutch or torque converter to achieve standstill [5] and a reverse unit to change rotation direction.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of a CVT-Operated EVT Experimentally Evaluated Against Half-Toroidal and Push-Belt CVTs

Druant

Vansompel

Belie

et al. 2018

IEEE Trans. Ind. Electron.

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This article describes how an electrical variable transmission (EVT) can be used as alternative for mechanical continuously variable transmission (CVT) systems. An EVT is an electromagnetic power split device having two mechanical and two electrical ports. The speed ratio between both mechanical ports (rotors) can be varied in a continuously variable way, so that this machine can be used as electromagnetic alternative for the mechanical pushbelt and half-toroidal CVT. Its operating principle is based on splitting the power into an electromagnetic direct path and an electrical path involving two inverters connected back-to-back. Its potential use as CVT is investigated by comparing experimental data against toroidal and belt CVT data from literature having comparable power ratings. To this end measurements are performed on a prototype 120 kW permanent magnet EVT.

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Section: Introductionmentioning

confidence: 99%