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Theoretical analysis and optimum integration strategy of the PEM fuel cell and internal combustion engine hybrid system for vehicle applications
Author(s) -
Zhang Xiuqin,
Ni Meng,
He Wei,
Dong Feifei
Publication year - 2015
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3369
Subject(s) - proton exchange membrane fuel cell , internal combustion engine , combustion , brake specific fuel consumption , automotive engineering , hydrogen fuel enhancement , engineering , hybrid system , heat transfer , fuel efficiency , mechanical engineering , process engineering , nuclear engineering , thermodynamics , fuel cells , chemistry , computer science , chemical engineering , physics , organic chemistry , machine learning
Summary The hybrid system comprised by a proton exchange membrane (PEM) fuel cell and internal combustion engine shows many advantages for vehicle applications. The hybrid system can recover the un‐reacted hydrogen from fuel cell, utilize heat in the combustion product from cylinder, or combine the advantages of both. Based on thermodynamics and electrochemistry, an indirect integration system of the PEM fuel cell and Otto cycle is established for vehicle applications. The irreversibilities such as the entropy production and overpotentials in the fuel cell, the finite‐rate heat transfer between the air in the Otto cycle and combustion chamber wall, the irreversible compression, expansion, and regeneration processes in the Otto cycle are considered. The excellence of the PEM fuel cell compared with internal combustion engine is shown in terms of energy conversion efficiency. When the vehicle is speeding or launching suddenly, not only the flow rate of natural gas into the hybrid system should be increased but also a specific coupling mode between two powertrain systems should be found. Copyright © 2015 John Wiley & Sons, Ltd.