Transmission Efficiency Prediction of a Metal Pushing V-belt CVT with Implementation of Control Logic
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چکیده
Abstract: A simulation technology has been developed to predict the transmission efficiency of a metal pushing V-belt and pulleys that make up the drive system of a continuously variable transmission (CVT). When a CVT operates in an actual vehicle, pulley thrust pressure is adjusted by feedback control to maintain a speed ratio. This feedback control has been implemented, for the first time, in an existing simulation that predicts the dynamic behavior of a metal pushing Vbelt using Abaqus/Explicit version 6.8-1 analysis. The new simulation enables stable control of a target speed ratio when appropriate gains are set for each analysis condition. Using this simulation, the following values can be obtained: 1) pulley thrust pressure that is necessary for maintaining a specified speed ratio but could previously be derived only from physical testing, 2) transmission efficiency of a CVT drive system, consisting of a metal pushing V-belt and pulleys under each operating condition, and 3) feasibility study is now available for the actual CVT configuration.
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تاریخ انتشار 2010