E-Axle Effect on the Vibratory Response of a Vehicle

Vehicle suspension systems are responsible for absorbing and filtering road irregularities to provide passenger safety and ride comfort. However, different vehicle and suspension parameters can affect the vibratory response. Consequently, vibrational analysis with different types of transmission is necessary. Furthermore, the electrification of the automotive chassis leads to the necessity of understanding the effects of introducing electric machines. This work analyzes the vibratory effect of changing a differential axis for an e-axle. This research presents a study on a half car model and body roll mode with different e-axles compared to a standard differential axle. Thus, changes concerning comfort, e-axle oscillation, and handling are considered in the time and frequency domains. In addition, a parametric sensitivity study is performed. The obtained results could be applied as design guidelines when sizing an e-axle solution.