Title: Why Do Aircraft Engines Have Two Spark Plugs Per Cylinder? | Boldmethod
Headings: Why Do Aircraft Engines Have Two Spark Plugs Per Cylinder?
Why Do Aircraft Engines Have Two Spark Plugs Per Cylinder?
1) Reliability
2) More Power
3) Even Combustion
https://www.flickr.com/photos/scsibug/
Spark Plug Fouling
AA1Car.com
Two Really Is Better Than One
Colin Cutler
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Content: TEL helps prevent engine knock, which is an uncontrolled combustion of pockets of fuel-air mixture in your cylinder, by raising the temperature and pressure where auto-ignition occurs. But while TEL helps with knock, it introduces another problem: lead deposits. If the TEL doesn't completely vaporize in the combustion cycle of your engine, which can happen if your engine is running too cool, lead deposits can accumulate on your spark plugs, causing them to mis-fire. AA1Car.com
That's where the dual ignition comes into play again. If a spark plug fouls, you have a backup spark plug that keeps firing. Two Really Is Better Than One
By having two spark plugs per cylinder, your aircraft engine is more reliable, produces more power, and burns fuel more evenly. And when you combine all three, you get an ultra-reliable engine that keeps you aloft until you decide it's time to land. Become a better pilot. Subscribe to get the latest videos, articles, and quizzes that make you a smarter, safer pilot.