The major complaint of hybrid vehicle driver is that real fuel economy is lower than the certified fuel economy. Therefore, it is important to analyze the cause of low fuel economy and to improve the fuel consumption at real driving condition. In this study, the various speed profile is measured by driving urban road with considering different traffic jam. By using backward simulation, the fuel economy characteristics of the acquired driving modes are analyzed. From the simulation results, the operating points of engine and motor analyzed and the cause of decrease of real fuel economy is examined.

• 권문성(Seoul National University of Science and Technology) | M. S. Kwon
• 성주연(Seoul National University of Science and Technology) | J. Y. Sung
• 박성천(Yeoju Institute of Technology) | S. C. Park
• 임원식(Member, Seoul National University of Science and Technology) | W. S. Lim Corresponding Author