Browse Publications Technical Papers 2016-36-0172

Study of Power Hop on Front Wheel Drive Vehicles Influence of Mounts, Driveline, Tires and Wheels 2016-36-0172

This paper has the objective to present the study made on a front wheel drive passenger car with “3 Points Pendular Mounts System” to minimize the “Power Hop effect” (powertrain forced oscillation) and reduce the loads on Powertrain Mounts System.In this study, we used the Taguchi Method (Design of Experiments) to optimize the number of tests performed to evaluate the influence of powertrain mounts system design characteristics, as well as axle shafts stiffness, and tire/wheels assemblies size.The data acquisition work was all done in a physical hardware (vehicle) on test track used instrumented parts and load cells. Accelerometers were used in previous tests to get qualitative understanding of the behavior of all interface components (mounts and wheels hubs) during the power hop event.The study results showed the best components combination in order to reduce peak loads over Powertrain System and, as a consequence, reducing the potential of components breakage under extreme conditions.As learning, we got a better understanding of the dynamic behavior of the Powertrain System and its interfaces during power hop event by controlling the main interface components design characteristics of this system.


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