14.52 Cooling Systems

14.52.2 Describe the main means for air cooling an engine, including:

(a) cooling fans;

• Cooling fans are used to increase airflow over the engine
• Particularly effective at low speeds or on the ground where natural airflow is limited
• The fan forces air over cylinders, fins, and other hot components
• Common in some installations (e.g. enclosed or rotary engines)

Summary:
Cooling fans provide forced airflow to maintain engine temperature when natural airflow is insufficient.

(b) baffles;

• Baffles are metal plates or seals installed around the engine
• They direct and control airflow over the hottest parts (especially cylinder heads)
• Prevent air from taking the path of least resistance and bypassing cooling areas
• Ensure efficient and even cooling of the engine