Dynamics of CVTs: A comparison between theory and experiments

G. Carbone, L. Mangialardi, P.A. Veenhuizen

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We present1 an experimental investigation of thepushing V-belt CVT dynamics with the aim of comparing theexperimental data with the theoretical predictions of theCarbone, Mangialardi, Mantriota (CMM) model [1-2]. A verygood agreement between theory and experiments is found. Inparticular it is shown that, during creep-mode (slow) shifting,the rate of change of the speed ratio depends linearly on thelogarithm of the ratio between the axial clamping forces actingon the two movable pulleys. The shifting speed is also shown tobe proportional to the angular velocity of the primary pulley.The results of this study are of utmost importance for the designof advanced CVT control systems and the improvement of theCVT efficiency, cars' drivability and fuel economy.
Original languageEnglish
Title of host publicationProceedings of 12th World Congress in Mechanism and Machine Science (IFToMM 2007) 17-21 June 2007, Besançon, France
Publication statusPublished - 2007
Eventconference; IFToMM 2007, Besançon, France; 2007-06-17; 2007-06-21 -
Duration: 17 Jun 200721 Jun 2007


Conferenceconference; IFToMM 2007, Besançon, France; 2007-06-17; 2007-06-21
OtherIFToMM 2007, Besançon, France


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