What is the difference between internal and external combustion engines?

An internal combustion engine and an external combustion engine are two types of engines that work differently to generate power. The main difference between the two is the way they burn fuel. In an internal combustion engine, the fuel is burned inside the engine, while in an external combustion engine, the fuel is burned outside the engine.

Internal combustion engines are the most commonly used type of engines in cars, trucks, motorcycles, and other vehicles. They work by mixing air and fuel inside the engine and then igniting it with a spark. This creates a controlled explosion that drives the pistons and generates power. Internal combustion engines are more efficient, smaller, and lighter than external combustion engines, making them ideal for most applications.

External combustion engines, on the other hand, are less common and are typically used in power generation, such as in steam engines. They work by burning fuel outside the engine to heat up water, which then creates steam. The steam is then used to turn a turbine and generate power. Although external combustion engines are less efficient than internal combustion engines, they can burn a wider range of fuels and can be more environmentally friendly.