Title: Describe the reciprocating engine cycle.
Course: Aircraft Pilot Training I (20053-I) > Section: Understanding Aircraft Systems: Engines

Description should include the following concepts:

- The intake stroke begins as the piston starts its downward travel. When this happens, the intake valve opens, and the fuel-air mixture is drawn into the cylinder.
- The intake, compression, power, and exhaust processes occur in four separate strokes of the piston.

Process/Skill Questions:

- What is a piston, and how does it work?
- What happens at each stoke of the piston?