This book aims to explore the role of hydrogen as a promising alternative to fossil fuels, particularly in the transport and heavy-duty sectors. As global efforts to reduce greenhouse gas (GHG) emissions accelerate, policymakers are increasingly focusing on hydrogen to achieve net-zero targets. While battery electric vehicles (BEVs) are expected to dominate the market for two-wheelers (2Ws), three-wheelers (3Ws), and personal cars, hydrogen-fueled internal combustion engines (ICEs) are emerging as a key solution for buses, heavy-duty trucks, construction machinery, agricultural equipment, and non-road applications.

This book presents an in-depth analysis of hydrogen-fueled engine technology, discussing its advantages, challenges, and future potential. It highlights how hydrogen-fueled engines eliminate emissions of particulate matter, carbon monoxide (CO), carbon dioxide (CO₂), and volatile organic compounds (VOCs). However, nitrogen oxides (NOₓ) emissions remain a challenge, which can be mitigated through advanced after-treatment systems and optimized engine operating conditions.

Through a comprehensive discussion of cutting-edge research and technological innovations, this book provides valuable insights for researchers, engineers, policymakers, and industry professionals working toward a sustainable hydrogen-powered future.