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Modeling and Analysis of Front End Accessory Drive System with Overrunning Alternator Decoupler
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
The generator is an important loaded component of a Front End Accessory Drive system (FEADS). With a huge moment of inertia and a very high running speed, the vibration and noise often occurs in operation, which has an effect on the service life. Thus an overrunning alternator decoupler (OAD) is used in the FEADS for reducing the vibration. In this paper, a model of FEADS with an OAD is established by the software Recurdyn. The influence of the OAD on the dynamic responses of pulley of generator and the system are analyzed, and is verified by bench experiments. And the influence of parameters, such as spring stiffness, moment of inertia of generator and loaded torque on the dynamic performances of the system are studied. Then an effective method is presented to optimize the oscillation of the tensioner arm and the slip ratio of the belt-generator pulley.