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The Effects of Loading Devices on the Stability of Ratio-Changing Characteristics in a Half-Toroidal CVT After Quick Torque Changes
Technical Paper
2007-01-2131
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Maintaining stability in the variator control system after quick torque changes is an important factor in achieving smooth mode changes in a power-split CVT system. In this paper, the ratio-changing characteristics of a half-toroidal CVT variator with hydraulic and mechanical loading devices are analyzed using a newly developed analytical model under dynamic load transmission. The ratio-changing characteristics of a variator with a mechanical loading device show a large overshoot after quick torque changes. In the case of a hydraulic loading device under constant application of axial pressure, it has been demonstrated that the ratio-changing characteristics are stable both theoretically and experimentally.
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Citation
Miyata, S., "The Effects of Loading Devices on the Stability of Ratio-Changing Characteristics in a Half-Toroidal CVT After Quick Torque Changes," SAE Technical Paper 2007-01-2131, 2007, https://doi.org/10.4271/2007-01-2131.Also In
SAE 2007 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V116-6; Published: 2008-08-15
Number: V116-6; Published: 2008-08-15
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