Sisäpolttoaineita

Sisäpolttoaineita are fuels used in internal combustion engines. These engines generate power through the controlled combustion of fuel and air within a confined space, typically a cylinder. The rapid expansion of gases produced by this combustion pushes a piston, which in turn drives a crankshaft and ultimately the vehicle's or machine's drivetrain. Common examples of sisäpolttoaineita include gasoline (petrol), diesel fuel, and various types of natural gas, such as compressed natural gas (CNG) and liquefied petroleum gas (LPG).

Gasoline is a volatile liquid derived from petroleum. It is used in spark-ignition engines where a spark plug ignites the fuel-air mixture. Diesel fuel is a less volatile petroleum distillate used in compression-ignition engines. In these engines, the fuel is injected into highly compressed, hot air, causing it to ignite spontaneously. Natural gas fuels are gaseous at room temperature and pressure and are typically stored under high pressure (CNG) or as a liquid at low temperatures (LNG, though this is less common for typical vehicle use than CNG/LPG).

The choice of sisäpolttoaine affects engine design, performance characteristics, and environmental emissions. Different fuels have varying energy densities, octane or cetane ratings, and combustion properties. The efficiency and emissions of internal combustion engines are also heavily influenced by the specific fuel used and the engine's tuning. While widely used, internal combustion engines and their associated sisäpolttoaineita are subject to ongoing research and development to improve efficiency and reduce their environmental impact, alongside the increasing adoption of alternative propulsion systems.