The Internal Combustion Engine (ICE) is a type of engine that converts fuel into mechanical energy through combustion. It operates by igniting a mixture of fuel and air within a confined space, causing a rapid expansion of gases that drives a piston. This process is fundamental to powering most vehicles today, including cars, trucks, and motorcycles. ICEs can be classified into two main types: spark-ignition engines, which use a spark plug to ignite the fuel-air mixture, and compression-ignition engines, which rely on the heat generated by compressing air to ignite the fuel. Despite the rise of electric vehicles, ICEs remain prevalent due to their established technology and infrastructure.