The conversation between human and AI assistant.
Which one has higher a compression ratio, SI or CI engine?
Yes, please. Can you also explain why CI engines have a higher compression ratio?
Sure. The higher compression ratio in CI engines is due to the fact that the fuel is injected into the combustion chamber at a later stage of the engine cycle, allowing for more complete combustion. In contrast, SI engines rely on spark ignition to combust the fuel, which limits their compression ratio.