Abstract
To predict the power losses in poly-V belt transmissions, theoretical models have been developed taking into consideration different types of power loss in a Front Engine Accessory Drive (FEAD). Even though power losses in a FEAD come from different phenomena (belt or tensioners hysteresis, belt-pulleys slip, etc.), the analysis in this paper focuses on the elastomeric belt hysteresis losses due to dynamic bending, stretching, shear, flank and radial compression of the belt rubber. DMA (Dynamical Mechanical Analysis) experiments are performed in order to determine the intrinsic loss modulus of the belt elastomeric constituent causing the loss of energy. This study leads to the determination of a hysteresis power loss map of a belt transmission.
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