Development of a modal emissions model for a hybrid electric vehicle
Development of a modal emissions model for a hybrid electric vehicle
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DOI：
10.1016/j.trd.2011.05.001
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发表时间：
2011-08
影响因子：
7.6
通讯作者：
Haibo Zhai;H. Frey;N. Rouphail
中科院分区：
文献类型：
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作者：
Haibo Zhai;H. Frey;N. Rouphail
随着混合动力电动汽车(HEV)市场份额的不断增长，需要新的方法来估计其实际能源使用和排放，以支持排放清单。这项研究量化了2001年丰田普锐斯混合动力汽车内燃机(ICE)启动和关闭的相关标准，并开发了热稳定条件下的尾气排放模型。发动机被发现低于发动机功率需求的阈值，该阈值取决于速度和加速。车辆比功率(VSP)是建立排放模型的基础。对单个循环的CO、NOx和HC排放的预测存在较大的相对误差，但对于每个选定的污染物，多个循环平均的总体排放预测的相对误差在10%以内。建议将内燃机发动机状态识别方法应用于混合动力汽车实际驾驶条件下的排放模拟。
With the growing market share of hybrid electric vehicles (HEVs), new methods are needed for estimating their actual energy use and emissions in order to support emission inventories. This research quantifies criteria associated with startup and shutdown of the internal combustion engine (ICE) for a 2001 Toyota Prius HEV and develops a modal tailpipe emissions model under hot stabilized conditions. The engine is found to be “off” below thresholds of engine power demand that are speed and acceleration dependent. Vehicle specific power (VSP) is used as the basis for modeling emissions. The predicted cycle emissions of CO, NOxand HC for individual cycles are subject to large relative errors, but the overall emission predictions for the average of multiple cycles have relative errors within 10% for each selected pollutant. The ICE engine status identification method is recommended for application to model HEV emissions under actual driving conditions.