One of the strategic objectives of supply chains in the automotive industry is the development of international sourcing. Renault works with a global network of cross-docking platforms to link distant assembly plants with first-tier suppliers. These platforms act both as information and physical consolidation points. At shop-floor, inland deliveries are received, sorted, repacked (if needed) and loaded onto containers for overseas transportation. Distribution and operation planning are key activities in such a cross-dock platform but despite its interdependency, current research considers them separately. This paper presents a detailed analysis of Renault cross-dock platforms called ILN (International Logistics Networks), their planning process and physical flows. An integer linear programming model to plan jointly the distribution and shop-floor operations in a cross-dock platform of Renault is developed. The objective is to minimize total cost composed of transportation cost (inbound and outbound), cost of internal resources and storage cost. Numerical offline tests of the model with CPLEX, based on real data for a number of past periods, have showed a 13% reduction of total cost. These encouraging tests confirm both the ability of the proposed approach to deal with real-size instances and the potential gains which can be obtained by considering decision related to distribution and planning together. Taking into account these results, the part of model concerning inbound logistics was integrated in the planning system used in a Renault ILN. The results of the first exploitation period have shown a reduction of 20% of inbound transportation cost comparing with the previous period without increasing the other costs.

汽车行业供应链的战略目标之一是发展国际采购。雷诺与全球对接平台网络合作，将遥远的组装厂与一流供应商联系起来。这些平台既充当信息发布点，又充当物理整合点。在车间，内陆交货被接收，分类，重新包装（如果需要）并装载到集装箱上以进行海外运输。配送和运营计划是这种跨码头平台中的关键活动，但尽管相互依赖，但目前的研究将它们分开考虑。本文详细介绍了称为ILN（国际物流网络）的雷诺跨码头平台，其规划过程和实际流程。开发了一个整数线性规划模型，用于共同规划雷诺跨码头平台中的分销和车间操作。目的是使总成本最小化，该总成本包括运输成本（入站和出站），内部资源成本和存储成本。使用CPLEX对模型进行的数字脱机测试基于过去许多时期的真实数据，显示总成本降低了13％。这些令人鼓舞的测试证实了所提出的方法处理实际大小实例的能力以及通过考虑与分发和计划相关的决策而可以获得的潜在收益。考虑到这些结果，有关入库物流的模型部分已集成到雷诺ILN中使用的计划系统中。