Dr. Seref Soylu received his Ph.D degree in Mechanical Engineering from Iowa State University in 2001. His Ph.D. research work mostly focused on internal combustion engines and thermodynamic engine modeling that were supported by John Deere Product Engineering Center. Through end of his Ph.D. study, he also worked for Caterpillar Inc. as an analytical engineer in their technical center in Peoria, IL for the development of the advanced diesel engines. After receiving his Ph.D. degree in 2001, Dr. Soylu joined to Sakarya University to perform research and teach thermal science courses. His research interests centered on the development of environmentally friendly road transport vehicles including hybrid electrical vehicles. Dr. Soylu also worked as a visiting scientist in the Joint Research Center of European Commission for a year from November 2004 to November 2005 to provide technical and scientific support to the policymakers of the Commission for their legislative works. His work in the Joint Research Center focused on fuels for internal combustion engines, exhaust emission measurement techniques for zero emission vehicles, portable emission measurement systems, and small engines. Dr. Soylu has also worked as independent expert for European Commission in the field of Energy and Transport to evaluate and review Framework Programme (6 & 7th) projects on behalf of the Commission. Dr. Soylu is currently an Associate Professor of Sakarya University. He is teaching undergraduate and graduate level thermal science courses and leading a research project entitled “Measurement and Modelling of Hybrid City Bus Real-World Emissions” funded by Turkish Ministry of Industry and Trade and TEMSA R&D.