The accuracy of carbon emission and fuel consumption computations in green vehicle routing
The accuracy of carbon emission and fuel consumption computations in green vehicle routing
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DOI：
10.1016/j.ejor.2017.04.005
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发表时间：
2017-10
期刊：
影响因子：
--
通讯作者：
Marcel Turkensteen
中科院分区：
文献类型：
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作者：
Marcel Turkensteen
许多最近的绿色车辆路径论文提出了数学模型，旨在最大限度地减少燃料消耗和环境破坏性的碳排放量的路径选择，车辆上的负载和速度有关的决策。计算这种影响的流行模型是综合模态排放模型（CMEM），该模型可以计算具有给定速度和负载的车辆的燃料消耗和碳排放。但是，CMEM要求为每一秒的拖运指定输入参数。为了避免这种情况，计算中假设车辆以固定速度行驶。本文探讨在何种程度上，这种固定的速度计算在CMEM是适合实际驾驶条件下的波动速度。在我们的数值实验中，我们发现，固定速度下的CMEM结果有时不到一半的实际驾驶条件下计算的，这取决于条件的类型。这表明，我们不能想当然地认为固定速度计算足够准确，可以用于绿色路由，这些计算的验证是必要的。
Many recent green vehicle routing papers have presented mathematical models designed to minimize fuel consumption and the environmentally damaging carbon emissions in the routing decisions related to route choice, the load on the vehicle, and the speed. A popular model for computing such impact is the Comprehensive Modal Emissions Model (CMEM) that can compute fuel consumption and carbon emissions for a vehicle with a given speed and load. However, the CMEM requires that input parameters are specified for every second of a haul. To avoid this, computations are used in which the vehicle is assumed to travel at a fixed speed. This paper investigates the extent to which such fixed speed computations in the CMEM are suitable for actual driving conditions with fluctuating speeds. In our numerical experiments, we find that the CMEM results under fixed speeds are sometimes less than half of those computed under realistic driving conditions, depending on the type of conditions. This indicates that we cannot take for granted that fixed speed computations are sufficiently accurate to be used in green routing and validation of these computations is necessary.