A comparison of energy recovery systems using exhaust gases in hybrid electric vehicles

Abstract

Due to the growing awareness of environmental protection, hybrid electric vehicles (HEV) have an increasing share in the automobile market. In order to offer customers HEV, which have long driven ranges, improvements must be made to enhance fuel efficiency. An energy Recovery System (ERS) is a newly developed technology aimed at fulfilling this target. This paper will compare multiple ERS that use exhaust gases as a source of energy. A clear understanding of each technology can be established by first reviewing and summarizing the advantages and challenges of each ERS. After that, a comparison between different technologies will be conducted to find the optimal ERS for compact HEV. Results show that integrated ETC is a more suitable method of energy recovery for the exhaust system in HEV based on the criterion that the combustion engines those energy recovery technologies apply to are the same.