Abstract

The urgent need to address energy efficiency, climate change, and air quality concerns in transportation due to emissions has driven the focus on reducing greenhouse gas emissions, particularly CO2. While electric vehicles have been promoted as zero-emission vehicles, their actual greenhouse impact should be reconsidered. Efforts to improve the fuel economy and thermal efficiency of internal combustion engines (ICEs) are crucial in meeting strict regulations. Tire and brake wear contribute significantly to particulate emissions, overshadowing the emissions from ICEs. Simulating ICEs, my work initially focused on high-pressure isobaric combustion, demonstrating its efficiency but higher soot levels compared to conventional diesel combustion. Strategies were explored to reduce soot emissions and enhance thermal efficiency. Additionally, fuel flexibility was investigated using various primary reference fuels, showcasing excellent combustion performance and emissions under certain conditions. Another project examined ultra-lean hydrogen combustion and methods to detect and mitigate engine knock. The research emphasized the importance of addressing these challenges in the transportation sector.

Bio

Hammam Aljabri is a Ph.D. candidate in Mechanical Engineering program in the Computational Reacting Flow Laboratory (CRFL) led by Prof. Hong G. Im. He received his bachelor's degree in Mechanical Engineering from Anglia Ruskin University in 2017. He obtained his master's degree in Mechanical Engineering from King Abdullah University of Science and Technology. His interest lies in computational analysis, combustion modeling, renewable energy, and clean fuels.