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Analysis for Dynamic Performances of Engine Front End Accessory Drive System under Accelerating Condition
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
A model for a generic layout of an engine front end accessory drive system was established. The dynamic performance of the system were obtained via a numerical method. The dynamic performance consisted of the oscillation angle of tensioner arm, the slip ratio of each pulley and the dynamic belt tension. In modeling the system, the hysteretic behavior of an automatic tensioner, the loaded torque of the accessory pulley versus the engine speed, the torsional vibration of crankshaft and the creep of the belt were considered. The dynamic performance of the system at steady state and under accelerating condition were analyzed. An example was provided to validate the established models. The result shows that the torsional vibration of crankshaft is larger under accelerating conditions and the dynamic performance of the system is different, though the acceleration is small. In the end, the dynamic performance of the system using different belt with different Young’s modulus is studied by using the established model.