Performance assessment of a predictive pre-heating strategy for a hybrid electric vehicle equipped with an electrically heated catalyst

被引:11
作者
Cane, Stella [1 ]
Brunelli, Lorenzo [1 ]
Gallian, Sara [2 ]
Perazzo, Alessandro [2 ]
Brusa, Alessandro [1 ]
Cavina, Nicolo [1 ]
机构
[1] Univ Bologna, Dept Ind Engn, Bologna, Italy
[2] FEV Italia Srl, Bologna, Italy
关键词
Pollutant emissions control; PHEV; Predictive functions; eHorizon; Electrically heated catalyst; Euro; 7; regulation; COLD-START; EMISSIONS; MANAGEMENT; ENGINE;
D O I
10.1016/j.applthermaleng.2022.119341
中图分类号
O414.1 [热力学];
学科分类号
摘要
In recent years, hybrid electric vehicles have been recognized as a valid solution in response to increasingly tight regulations on CO2 emission. However, reduced engine load and repeated engine starts and stops may reduce substantially the temperature of the exhaust after-treatment system (EATS), leading to relevant issues related to pollutant emission control. In this context, electrically heated catalysts (EHCs) represent a promising solution to ensure high pollutant conversion efficiency without affecting engine efficiency and performance. This work aims at studying the advantages provided by the introduction of a predictive EHC control function for a light-duty Diesel plug-in hybrid electric vehicle (PHEV) equipped with a Euro 7-oriented EATS. Based on the knowledge of future driving scenarios provided by vehicular connectivity, engine first start can be predicted and therefore an EATS pre-heating phase can be planned. For this purpose, a representative 0-D model has been considered to define the most convenient pre-heating strategy and different real driving scenarios have been simulated to test the proposed EHC predictive control strategy. Although the pre-heating introduction implies an additional en-ergy request which results in increased fuel consumption, the results show that the final NOx emission over a complete driving cycle can be reduced up to more than 60% compared to the base EHC strategy. Moreover, this would allow to comply with the scenarios introduced by the Euro 7 regulation proposal, while enabling the adoption of a simplified EATS architecture resulting in reduced manufacturing costs.
引用
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页数:20
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