What’s the difference between engine knocking and detonation?

Question

[Wikipedia](https://en.wikipedia.org/wiki/Engine_knocking) isn’t clear, seeming to say they’re synonymous, then later implying they’re not.

What’s the difference, if any, between the two?

In: 3

Answer 1

We’re playing patty cake, and clapping our hands is ignition/detonation. We usually clap in the middle with the rhythm but sometimes you clap my hands unexpectedly early, and out of rhythm. That’s engine knock.