摘要
基于试验数据,针对2014款BMW i3增程器(REX)进行了控制分析和模型验证。在美国阿贡国家实验室的先进动力总成研究所,置于环境仓的底盘测功装置上进行了车辆测试。BMW iREX是串联插电式混合动力增程车辆,其包括1台0.65L直列2缸增程发动机、1台26.6kW发电机、1台125kW的永磁同步交流电动机以及18.8kW·h的锂离子电池。包含热因素的部件和车辆模型均基于试验数据开发。例如,发动机油耗率、电池电阻或座舱暖通风与空调(HVAC)系统的能量消耗均受温度影响。另外在常温条件下(22℃环境温度)分析了车辆级控制策略。着重分析了发动机起/停策略、电池荷电状态(SOC)平衡和发动机运行工况。接着分析了基于环境状态(-7~35℃环境温度)或车辆状态(冷浸或热态)的控制策略差异。最后,介绍了基于高精度、直观的车辆仿真工具Autonomie的开发模型验证。在大多数热状态下,发动机油耗和电池SOC结果均在多次试验差异范围内。
引文
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(1)为了符合原著本意,本文仍沿用原著中的非法定单位——编注。