I have always been curious as to why there is a theory that higher octane gas than is necessary for a particular engine is considered a good thing. My understanding is that the required octane number depends upon the compression ratio.
To make it even more confusing to me, when I was young, 10.6 to 1 compression ratio was high compression and required premium; 7 to 1 was the compression ratio for regular.
Is it the fuel injection? Control over ignition timing? Is there a knock sensor in the engine to even know that detonation is occurring?
I know a certain amount about the subject but am always glad to learn more.
To make it even more confusing to me, when I was young, 10.6 to 1 compression ratio was high compression and required premium; 7 to 1 was the compression ratio for regular.
Is it the fuel injection? Control over ignition timing? Is there a knock sensor in the engine to even know that detonation is occurring?
I know a certain amount about the subject but am always glad to learn more.