Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles

To simultaneously achieve high fuel efficiency and low emissions in a diesel hybrid electric vehicle (DHEV), it is necessary to optimize not only power split but also exhaust thermal management for emission aftertreatment systems. However, how to coordinate the power split and the exhaust thermal ma...

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Autores principales:	Jinghua Zhao, Yunfeng Hu, Fangxi Xie, Xiaoping Li, Yao Sun, Hongyu Sun, Xun Gong
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	diesel hybrid electric vehicle (DHEV) power split exhaust thermal management nonlinear model predictive control (NMPC) Technology T
Acceso en línea:	https://doaj.org/article/242743418f064989aa3d32ecb2bd0260
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spelling	oai:doaj.org-article:242743418f064989aa3d32ecb2bd02602021-11-25T17:26:07ZModeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles10.3390/en142275051996-1073https://doaj.org/article/242743418f064989aa3d32ecb2bd02602021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7505https://doaj.org/toc/1996-1073To simultaneously achieve high fuel efficiency and low emissions in a diesel hybrid electric vehicle (DHEV), it is necessary to optimize not only power split but also exhaust thermal management for emission aftertreatment systems. However, how to coordinate the power split and the exhaust thermal management to balance fuel economy improvement and emissions reduction remains a formidable challenge. In this paper, a hierarchical model predictive control (MPC) framework is proposed to coordinate the power split and the exhaust thermal management. The method consists of two parts: a fuel and thermal optimized controller (FTOC) combining the rule-based and the optimization-based methods for power split simultaneously considering fuel consumption and exhaust temperature, and a fuel post-injection thermal controller (FPTC) for exhaust thermal management with a separate fuel injection system added to the exhaust pipe. Additionally, preview information about the road grade is introduced to improve the power split by a fuel and thermal on slope forecast optimized controller (FTSFOC). Simulation results show that the hierarchical method (FTOC + FPTC) can reach the optimal exhaust temperature nearly 40 s earlier, and its total fuel consumption is also reduced by 8.9%, as compared to the sequential method under a world light test cycle (WLTC) driving cycle. Moreover, the total fuel consumption of the FTSFOC is reduced by 5.2%, as compared to the fuel and thermal on sensor-information optimized controller (FTSOC) working with real-time road grade information.Jinghua ZhaoYunfeng HuFangxi XieXiaoping LiYao SunHongyu SunXun GongMDPI AGarticlediesel hybrid electric vehicle (DHEV)power splitexhaust thermal managementnonlinear model predictive control (NMPC)TechnologyTENEnergies, Vol 14, Iss 7505, p 7505 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	diesel hybrid electric vehicle (DHEV) power split exhaust thermal management nonlinear model predictive control (NMPC) Technology T
spellingShingle	diesel hybrid electric vehicle (DHEV) power split exhaust thermal management nonlinear model predictive control (NMPC) Technology T Jinghua Zhao Yunfeng Hu Fangxi Xie Xiaoping Li Yao Sun Hongyu Sun Xun Gong Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles
description	To simultaneously achieve high fuel efficiency and low emissions in a diesel hybrid electric vehicle (DHEV), it is necessary to optimize not only power split but also exhaust thermal management for emission aftertreatment systems. However, how to coordinate the power split and the exhaust thermal management to balance fuel economy improvement and emissions reduction remains a formidable challenge. In this paper, a hierarchical model predictive control (MPC) framework is proposed to coordinate the power split and the exhaust thermal management. The method consists of two parts: a fuel and thermal optimized controller (FTOC) combining the rule-based and the optimization-based methods for power split simultaneously considering fuel consumption and exhaust temperature, and a fuel post-injection thermal controller (FPTC) for exhaust thermal management with a separate fuel injection system added to the exhaust pipe. Additionally, preview information about the road grade is introduced to improve the power split by a fuel and thermal on slope forecast optimized controller (FTSFOC). Simulation results show that the hierarchical method (FTOC + FPTC) can reach the optimal exhaust temperature nearly 40 s earlier, and its total fuel consumption is also reduced by 8.9%, as compared to the sequential method under a world light test cycle (WLTC) driving cycle. Moreover, the total fuel consumption of the FTSFOC is reduced by 5.2%, as compared to the fuel and thermal on sensor-information optimized controller (FTSOC) working with real-time road grade information.
format	article
author	Jinghua Zhao Yunfeng Hu Fangxi Xie Xiaoping Li Yao Sun Hongyu Sun Xun Gong
author_facet	Jinghua Zhao Yunfeng Hu Fangxi Xie Xiaoping Li Yao Sun Hongyu Sun Xun Gong
author_sort	Jinghua Zhao
title	Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles
title_short	Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles
title_full	Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles
title_fullStr	Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles
title_full_unstemmed	Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles
title_sort	modeling and integrated optimization of power split and exhaust thermal management on diesel hybrid electric vehicles
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/242743418f064989aa3d32ecb2bd0260
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Modeling and Integrated Optimization of Power Split and Exhaust Thermal Management on Diesel Hybrid Electric Vehicles

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