The conversation between human and AI assistant.
Which one has higher a compression ratio, SI or CI engine?
That makes sense. How does the compression ratio affect engine performance?
A higher compression ratio generally leads to better engine efficiency, as it allows the engine to extract more energy from the same amount of fuel. It can also result in increased power output and improved fuel economy. However, a compression ratio that is too high can cause knocking, which can be detrimental to the engine.