Powerplant Systems & Engine Overhaul Flashcards

What is the main purpose of the carburetor in an aircraft engine?

Answer: Mix air and fuel

The carburetor mixes air and fuel in the correct ratio for combustion.

What component cools the cylinders of an air-cooled engine?

Answer: Cooling fins

Cooling fins attached to the cylinders dissipate heat.

What type of oil system is most common in aircraft engines?

Answer: Dry sump

Aircraft engines typically use a dry sump oil system to maintain consistent lubrication.

During an overhaul, how are engine cylinders typically cleaned?

Answer: Bead blasting

Cylinders are usually cleaned by bead blasting to remove carbon and debris.

Which tool measures cylinder wear in an engine?

Answer: Cylinder bore gauge

A cylinder bore gauge measures wear inside the engine cylinders.

What part regulates the speed of a propeller?

Answer: Governor

A governor adjusts the propeller blade angle to control RPM.

What is used to check crankshaft runout?

Answer: Dial indicator

A dial indicator measures crankshaft runout during overhaul.

What causes detonation in a reciprocating engine?

Answer: Premature explosion of the fuel/air mixture

Detonation occurs when the fuel/air mixture explodes rather than burns smoothly.

Which type of inspection checks for internal engine cracks?

Answer: Magnetic particle inspection

Magnetic particle inspection detects surface and subsurface cracks in ferrous materials.