Principles of an Internal Combustion Engine
Course Description
Let us begin our exploration of the internal combustion engine. At its heart, an internal combustion engine is a heat engine in which the burning of fuel occurs within a dedicated combustion chamber, which is an integral part of the working fluid flow circuit. This combustion process generates gases at incredibly high temperatures and pressures. These gases expand, performing work by pushing against a piston inside a cylinder. This linear, reciprocating motion of the piston is then converted into smooth, rotary motion via a connecting rod and a crankshaft. This transformation of chemical energy into mechanical energy makes the internal combustion engine the prime mover for a vast range of applications-from the cars we drive and the motorcycles we ride, to generators and industrial pumps.
What you'll learn in this course?
Explain the fundamental operating principles and thermodynamic cycles of both Spark Ignition (SI) and Compression Ignition (CI) engines.
Identify and describe the function of major engine components, including the cylinder, piston, crankshaft, and valve train.
Differentiate between two-stroke and four-stroke engine cycles, petrol and diesel engines, and naturally aspirated vs. forced induction systems.
Analyze key engine performance parameters, including torque, power, thermal efficiency, and mechanical efficiency.
Understand the basics of combustion processes, fuel systems, and the factors influencing abnormal combustion and engine emissions.
Prerequisites
Basic knowledge of mechanical engineering concepts
Familiarity with elementary thermodynamics is helpful
Course Curriculum
- What is a Heat Engine?
- Advantages of Internal Combustion Engines
- Classification of IC Engines
- Engine Fundamentals: Nomenclature
- Key Engine Components and Their Functions
- Key Engine Components and Their Functions (Cont.)
- The Four-Stroke Cycle: An Overview
- Four-Stroke SI Engine Operation: Intake Stroke
- Four-Stroke SI Engine Operation: Compression Stroke
- Four-Stroke SI Engine Operation: Power Stroke
- Four-Stroke SI Engine Operation: Exhaust Stroke
- Four-Stroke CI (Diesel) Engine Operation
- Petrol vs. Diesel Engines: Key Distinctions
- The Two-Stroke Engine: Principles
- Two-Stroke vs. Four-Stroke
- Thermodynamic Cycles: The Idealization
- The Otto Cycle Process
- The Diesel Cycle Process
- Comparison of Thermodynamic Cycles