A nonlinear centrifugal pendulum vibration absorber (CPVA) with normal-force dependant friction loss is investigated in a torsional model of a downspeeded powertrain of a heavy-truck. The engine model includes gas-pressure excitation and the existing pendulum model is extended to include a continuous formulation of end-stops at the end of the pendulum-path. Furthermore, the friction loss of the pendulum is experimentally determined. A pendulum-path parameter-study in the complete powertrain model is conducted to consider the effects of the system dynamics on the CPVA. It is shown that the performance of the CPVA is affected by the powertrain system-dynamics and thus important to consider in the design of the CPVA. Downspeeding of the engine by appropriate gearing of the driveline is a measure to decrease the CO${}_2$ emissions. However, downspeeding increases the torsional vibration and noise of the powertrain with conventional torsional vibration reduction methods. The CPVA can be used to reduce the torsional vibration and thus facilitate to reach environmental goals.

在重型卡车减速动力系统的扭转模型中研究了具有法向力相关摩擦损失的非线性离心摆式减振器 (CPVA)。发动机模型包括气压激励，现有的钟摆模型扩展到包括在钟摆路径末端的终点止动装置的连续公式。此外，钟摆的摩擦损失是通过实验确定的。在完整的动力系统模型中进行钟摆路径参数研究，以考虑系统动力学对 CPVA 的影响。结果表明，CPVA 的性能受动力总成系统动力学的影响，因此在 CPVA 的设计中考虑这一点很重要。通过传动系的适当传动来降低发动机转速是减少二氧化碳排放的一种措施${}_2$排放。然而，使用传统的扭转减振方法，降速会增加动力系统的扭转振动和噪音。CPVA 可用于减少扭转振动，从而有助于实现环境目标。