Fossil fuels, at the time, were incredibly difficult to control not only WHEN 🔥 would occur but also where & flame propagation.

Ignition timing & 🔥 propagation are critical to overall performance.

Ignition 💥 ⏳ wrt to #CrankAngle so 🔥 spreads across the #CombustionChamber (CC) volume in a nice

/5