张成国1,2，王峰2，郝鹏飞2，张文通2，赵福芹2
（1、内燃机可靠性国家重点实验室，山东 潍坊 261205；2、潍柴动力股份有限公司，山东 潍坊 261205）
摘要：进行车辆的经济性计算时需要提前得到准确的阻力和动力传动效率，耗时较长且误差较大，本文通过对采集的路谱进行提取、分析，利用驾驶循环中发动机的转速和扭矩计算得到仿真所需要的不同时间和车速下的整车的阻力，提高了计算精度，为整车匹配和优化节约了时间和成本。
关键词：动力传动；路谱分析；匹配优化；驾驶循环
Abstract: When evaluating vehicle fuel economy, accurate vehicle resistance and transmission efficiency are required, which takes time to acquire but still with large error. This paper expounds a method which obtains vehicle resistance at different time and vehicle speed required by simulation using engine speed and torque in the driving cycle by extracting and analyzing the collected road load data. This method improves simulation accuracy, and leads to time and cost savings during vehicle matching and optimization.
Key words: Powertrain；Road Load data Analysis； Match Optimization；Driving Cycle
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