What is the purpose of engine baffles and seals in a pressure cowling system?

• A. They direct air away from the fins.
• B. They seal oil leaks.
• C. They cause air to be directed over the cooling fins.
• D. They control ignition timing.

Answer: (B)

The main job of engine baffles and seals in a pressure cowling is to shape and control the cooling air so it flows across the engine’s cooling fins. The baffles act as walls that create a defined path for the air, while the seals fill the gaps to prevent air from slipping around the sides of the engine. By directing the air through the fins and minimizing bypass, the air removes heat efficiently and keeps the engine temperatures in a safe range. Sealing oil leaks isn’t the primary function of these components; oil seals and gaskets handle oil containment, whereas baffles and seals ensure the cooling airflow follows the intended path. If air were allowed to bypass the fins or miss the cooling surfaces, cooling would suffer and the engine could overheat.