Principles of Engine Operation

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Across
  1. 2. Highest point of piston travel in compression
  2. 4. Attaches piston to crankshaft
  3. 5. Lowest point of piston travel
  4. 8. Valves closed, piston moves down
  5. 11. Spent fuel after combustion
  6. 12. Gasoline in droplets, mixes with air
  7. 13. Air-fuel flows out through open exhaust port
  8. 14. Piston travels down w/intake valve open
Down
  1. 1. Movement of piston in the cylinder
  2. 3. Squeezing of a gas
  3. 6. Shaft with lobes to operate valves
  4. 7. Part for opening and sealing an aperture
  5. 9. Converts reciprocating into circular motion
  6. 10. Part that moves up and down in the cylinder