Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-farm-mechanics-7b8712ffe4f3

What does a diesel engine compress before fuel is injected?

Air.

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  1. Fuel
  2. Coolant
  3. Air ✔

Why: A diesel engine compresses air, and the heat of that compressed air ignites the injected fuel.

Huh, didn't know that: A diesel engine compresses air, and the heat of that compressed air ignites the injected fuel.

The dad joke
Compressed air is under a lot of pressure to perform.
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References

Answer: Air. A diesel engine compresses air, and the heat of that compressed air ignites the injected fuel.

  1. Scouting America: Farm Mechanics www.scouting.org/merit-badges/farm-mechanics
    How a Diesel Engine Works
    Checked 2026-11-07.

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