Basics of IC Engines: Spark Ignition and Compression Ignition

Internal combustion engines power critical transport and industrial systems, making a strong grasp of their thermodynamic principles essential for any aspiring mechanical engineer. This text-based course guides you through the fundamental mechanics, operational differences, and mathematical formulas that govern spark ignition (SI) and compression ignition (CI) engines. You will transition from basic concepts to confidently analyzing engine performance. What you'll learn: Understand the core differences in fuel induction and ignition mechanisms between SI and CI engines; Analyze the ideal air-standard Otto and Diesel cycles using thermodynamic principles; Derive key performance equations including mean effective pressure, thermal efficiency, and specific fuel consumption; Solve practical engineering problems with step-by-step calculations and derivations; Explore modern engine developments such as electronic fuel injection systems and emissions reduction technologies. The course begins with foundational definitions of engine components and basic terminology, then progresses through thermodynamic cycles, and concludes with practical problem-solving exercises. This course is designed for engineering students, technicians, and automotive enthusiasts who want to build a solid theoretical foundation in internal combustion engines without any prior advanced thermodynamics experience. Start reading today to master the core principles of internal combustion engines.