Quote:
Originally Posted by fistpoint
And how exactly does that conflict with anything I have typed? I didn't say there is a minimum or maximum compression ratio required for each octane rating. No one said or implied that ever.
One more try: the octane rating refers to the point at which the gasoline ignites, or more specifically, its ability to resist early detonation. Nothing you say will change the science behind that, unless physics operate differently in your world...besides your toilets.
Instead of continuously arguing, why don't you just google the phrase "octane rating". Everything I have typed will be revealed to you since you don't want to hear it from me. Is it so wrong to try to learn something that differed from your previously accepted knowledge?
|
I don't understand why you need to make a point about octane rating as if some people might imagine it's an extra amount that's been added to increase power rather than simply being the rating given to signify the ability of the fuel to resist self igniting along with a slower burn rate.
My point is that using a lower octane fuel than the design/tune requires, loses power, raises fuel consumption and could cause engine damage.
Using a high octane fuel in an engine requiring low octane will not increase power unless that capability is built in and could burn the valves as the low flame travel rate continues past the exhaust valves.
No need to get your knickers in a twist about who knows the most.
Interesting that the direct injection Mazda engine uses our lowest 91 octane with 13:1
Does it inject just before the plug fires so that the fuel is ignited before it can be detonated?
If that's the case then why would the 86 require 98 octane or is that because it also has the port injection?