What type of fuel system is utilized in the Cessna 172?

The Cessna 172 utilizes a gravity-fed fuel system without fuel injection. This system relies on the natural force of gravity to deliver fuel from the wings to the engine. The design ensures that fuel is readily available to the engine as the aircraft operates at various attitudes, which is critical for maintaining consistent performance throughout different phases of flight.

In a gravity-fed system, the fuel tanks are positioned higher than the engine, allowing fuel to flow down via gravity without needing additional pressure from fuel pumps. This system simplifies fuel management and reduces the number of components, which can improve reliability and decrease maintenance concerns.

While there are other options listed, they involve mechanisms that do not align with the design and functionality of the Cessna 172’s fuel system, specifically regarding pump feed or the inclusion of fuel injection, which this aircraft does not use. Understanding the fuel system in the Cessna 172 is essential for a pilot's training and safety, as it impacts the characteristics of fuel delivery and engine performance during flight.