Engines require fuel to undergo combustion, which generates the energy needed to power the machine. Petrol and diesel are commonly used fuels because they have high energy density and can be easily transported and stored.
Why do some engines, like those in cars and generators, require fuel such as petrol and diesel?
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Engines in cars and generators require fuel, such as petrol (gasoline) and diesel, because these fuels contain chemical energy that can be efficiently converted into mechanical energy through combustion. In an internal combustion engine, fuel undergoes controlled combustion, producing high-pressure gases that drive pistons or turbines, generating mechanical power. This mechanical energy is then transformed into useful work, such as moving a vehicle or generating electricity. Fuels like petrol and diesel are energy-dense and combustible, making them ideal for powering engines, providing a reliable and portable source of energy for a wide range of applications.