What is essential for the proper operation of an engine in terms of fuel and air?

For an engine to operate effectively, the correct mixture of fuel and air that flows into the combustion chamber is vital. This mixture is crucial because it directly affects the efficiency and power output of the engine. When the fuel-to-air ratio is balanced, optimal combustion occurs, which leads to better performance and lower emissions. If the mixture is too rich (too much fuel) or too lean (too much air), it can result in poor engine performance, increased wear and tear, and higher emissions.

Each engine design has specific requirements for this mixture depending on its type and intended use. For example, a two-stroke engine often operates at a different fuel-to-air ratio compared to a four-stroke engine, primarily because of differences in their operational mechanics. Therefore, ensuring the right mixture enters the combustion chamber is fundamental to the proper function and efficiency of the engine.