This paper deals with the lateral force effects of conventional four-axle railway vehicles in conditions of S-shape curves, which are represented especially by switches negotiated in the diverging direction. With the use of a multi-body model of an electric locomotive, a sensitivity analysis of selected vehicle parameters on the maximum guiding force in the S-curve is performed. Subsequently, a definition of so-called equivalent guiding force is proposed. This simplified parameter can be used for the purposes of a quantification of the damaging effects of a vehicle in switches, e.g. in wear-dependent track access charge systems. Attention is also paid to the particularities of systems for active radial bogie or wheelset steering in conditions of tight S-curves and relevant requirements on these systems. The problem of a punctual on-board recognition of the S-curve is demonstrated using experimental data measured on an electric locomotive.

本文研究了传统四轴铁路车辆在 S 形曲线条件下的侧向力效应，特别是在分叉方向上通过的开关表示。利用电力机车的多体模型，对选定的车辆参数对S曲线中的最大引导力进行了敏感性分析。随后，提出了所谓等效导向力的定义。该简化参数可用于量化车辆在开关中的破坏性影响，例如在磨损相关的轨道访问收费系统中。还关注了在紧S曲线条件下主动径向转向架或轮对转向系统的特殊性以及对这些系统的相关要求。