Why Gasoline Engines Stop at a Compression Ratio of 12 — Otto vs Diesel
·7 min read
Same compression ratio: Otto is 56.5% at r=8 and 63.0% at r=12, Diesel at cutoff 2 is 49.0% and 56.7%. Knock, not the heat input, stops gasoline near 12.
Same compression ratio: Otto is 56.5% at r=8 and 63.0% at r=12, Diesel at cutoff 2 is 49.0% and 56.7%. Knock, not the heat input, stops gasoline near 12.