Zainal Ambri Abdul Karim has been at the Department of Mechanical Engineering at Universiti Teknologi PETRONAS, Malaysia for over 20 years and is currently an associate professor there. He obtained his B.Sc. in Marine Engineering from the California Maritime Academy, USA, his M.Sc. in Marine Engineering from the University of Newcastle upon Tyne (UK) and later studied Automotive Engineering to PhD level at Loughborough University (UK). He has conducted several short courses for the Accelerated Capability Development for PETRONAS Engineers Skill Group-2, which included Design, Operation, Maintenance and Inspection of Steam Boilers, Internal Combustion Engines and Automotive Engineering. In addition, he has contributed to other short courses such as Centralized Distributed Cooling System and Thermal Power Plant Efficiency & Heat Rate Improvement. He is an active reviewer for several international journals and has published more than 125 journal articles. His research interests include combustion analysis, energy optimization, marine engineering, power plant engineering and internal combustion engines.