Title: Identify the cycles of a four-stroke reciprocating engine.
Course: Aviation Maintenance Technology I (20114-I) > Section: Maintaining the Power Plant

Identification should include

- intake—fuel and air is drawn in to the cylinders
- compression—fuel and air mixture is compressed within the cylinders
- power—ignited fuel and air mixture creates usable power to the propeller.
- exhaust—fuel and air mixture is burned and expelled from the cylinder
- valve duration/overlap—the period during engine operation when both intake and exhaust valves are open at the same time
- five events—intake, compression, ignition, power, and exhaust.

Process/Skill Questions:

- What are the components of a four-stroke reciprocating engine?
- What are the four strokes of the Otto cycle?
- On what stroke does the spark from the sparkplug occur?
- What are the five events that occur in a reciprocating engine?
- What is the purpose of valve overlap?