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Optimization of fuel economy for a multimode plug-in hybrid electric vehicle

Idres, Moumen and Mohd Nizum, Ahmad Hazwan and Wan Mohamad Fathi, Wan Muhammad Adam and Okasha, Mohamed Elsayed Aly Abd Elaziz (2021) Optimization of fuel economy for a multimode plug-in hybrid electric vehicle. In: 5th International Conference on Mechanical, Automotive and Aerospace Engineering 2021 (ICMAAE'21), 22 - 23 June 2021, Virtual. (Unpublished)

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Abstract

Recently, Plug-in Hybrid electric vehicles become a sustainable solution to strike a balance between performance and fuel economy. For a multimode PHEV, the car switches among three operation modes; namely electric mode, series mode, and parallel mode to maximize fuel economy based on the driving conditions. Atkinson thermodynamic cycle has a higher expansion stroke compared to Otto cycle; which leads to more work, less emissions and higher thermal efficiency. In this work, the optimization of fuel economy for a multimode PHEV reference vehicle that resembles Honda Accord PHEV using Atkinson engine is conducted. The optimization is based on a combined driving cycle that includes both a city cycle and a highway cycle. Mapping technique is used to represent performance and fuel consumption of Atkinson engine. The mapping is calibrated to match Honda Accord PHEV performance data. Global generalized pattern search optimization method is utilized. The optimization is performed in two steps. In the first step, the driving mode-switching strategy is optimized to increase overall equivalent Miles-per-Gallon (〖MPG〗_e) for the combined driving cycle. In the second step, powertrain components are re-sized to further improve equivalent fuel economy. Optimization of driving mode-switching increased 〖MPG〗_e from 48 to 64.5 (30% increase) and a further 10% increase to 70.5 is achieved by powertrain components sizing optimization. The developed optimization method proved to be a viable method to improve fuel economy of hybrid vehicles

Item Type: Conference or Workshop Item (Slide Presentation)
Additional Information: 5827/94044
Uncontrolled Keywords: Hybrid Electric Vehicle, Plug-In, PHEV, Powertrain, Fuel Economy, Multimode, Mode Switching, Optimization
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA1001 Transportation engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA174 Engineering design
T Technology > TA Engineering (General). Civil engineering (General) > TA329 Engineering mathematics. Engineering analysis
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Dr Moumen Idres
Date Deposited: 25 Nov 2021 12:48
Last Modified: 25 Nov 2021 12:48
URI: http://irep.iium.edu.my/id/eprint/94044

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