An Overview of Modern Fuel Injection Strategies for Automotive Diesel, LNG, and Hydrogen Engines: Towards better Performance and emissions

Synopsis

The purpose of this book is to provide comprehensive insights into modern fuel injection strategies of diesel engines and their impact on performance (BSFC, Torque, BTE), emissions, and combustion noise, with a strong focus on vehicle-level performance. Aimed at engineering students, researchers, and automotive professionals, it brings a rare combination of the author’s PhD research, scholarly knowledge and real-world hands-on R&D experience. A key highlight is the detailed analysis of the Quadruple Injection Strategy—comprising double pilot, main, and post injections—combined with high EGR and Low Temperature Combustion (LTC) in a medium-duty Common Rail Direct Injection(CRDI) engine. It also presents the effects of different multiple fuel injection strategies on fuel economy and noise at the vehicle level. Further, Hydrogen and LNG-based engines are gaining significant attention globally for their potential to reduce emissions and support the automotive industry’s decarbonization goals. This book includes two chapters dedicated to dual-fuel (Diesel-LNG and Diesel-Hydrogen) compression ignition (CI) engines, their fuel injection strategies and high-level vehicle configurations. Both engine types employ High-Pressure Direct Injection (HPDI) technology. These engines utilise the Quadruple Injection Strategy featuring double post-injections and a diesel pilot fuel pulse.