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首页> 外文期刊>American Journal of Traffic and Transportation Engineering >Fe Coefficient - Development and Application of a Key Figure for Assessing the Efficiency of Alternative Drive Concepts in Trucks
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Fe Coefficient - Development and Application of a Key Figure for Assessing the Efficiency of Alternative Drive Concepts in Trucks

机译：铁系数-评估卡车替代驱动概念效率的关键指标的开发和应用

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Alternative drive concepts for trucks represent a highly promising way of reducing environmental pollution from road freight traffic. There are numerous proposals and pilot schemes pointing to the replacement of fossil fuel diesel by more sustainable energy sources. Along with drive chain electrification, it is a matter here of deploying alternative natural (gas) and synthetically generated fuels (eFuels) in combustion engines that might have to be modified. Given that a multitude of parameters on final energies, vehicle and travel route/ambient conditions enter into the consumption calculation, it is usually difficult to compare the various drive concepts based on individually gauged consumptions/emissions. It is therefore proposed assessing the comparison on the basis of the same vehicle platform under practically the same deployment and route parameters. In other words, in order to examine an alternative energy as to its efficiency, only the vehicle drive chain is replaced - everything else remains as it is! The Fe coefficient in the heading is formulated to afford a simplified comparison of the various drive concepts under the above general conditions. Going into the Fe coefficient in each instance is solely the mean drive efficiency over the route η_(E-N) and the payload to total load ratio under full capacity utilisation η_(kon) (design efficiency). The calculated Fe coefficient provides information on consumption. The greater the Fe the higher the consumption. Under the same vehicle platform - and with consideration given to the above general conditions - the Fe coefficients of the various drive variants can be related one to the other and, in this way, the increase or decrease in consumption as against, for instance, the diesel benchmark can be established. In conclusion, the Fe coefficient is used in three case studies to assess the effectiveness as against the diesel benchmark of two electric battery (Fuso eCanter, Tesla Semi) trucks and one LNG-driven Iveco Stralis NP 400 truck.
机译：卡车的替代驱动概念是减少公路货运对环境污染的极有希望的方式。有许多建议和试验计划，旨在通过更可持续的能源替代化石燃料柴油。随着驱动链电气化的发展，在内燃机中部署替代天然气（天然气）和合成燃料（eFuel）可能是必须要做的事情。考虑到最终能量，车辆和行驶路线/环境条件的大量参数都进入了能耗计算，通常很难根据单独测量的能耗/排放量比较各种驱动方案。因此，建议在几乎相同的部署和路线参数下，基于相同的车辆平台评估比较。换句话说，为了检查替代能源的效率，只更换了车辆传动链-其他一切都保持原样！公式中的标题中的Fe系数可简化上述一般条件下各种驱动概念的比较。在每种情况下，进入Fe系数仅是路径η_（E-N）上的平均驱动效率和满负荷利用率η_（kon）下的有效负载与总负载之比（设计效率）。计算出的铁系数提供了有关消耗的信息。 Fe越大，消耗量越大。在相同的车辆平台上-并考虑到上述一般条件-各种驱动方式的Fe系数可以相互关联，这样，与例如可以建立柴油基准。总之，在三个案例研究中使用了Fe系数来评估两辆电动卡车（Fuso eCanter，Tesla Semi）和一辆LNG驱动的依维柯Stralis NP 400卡车的柴油基准测试的有效性。

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