Fred ....Can you name the spy ??
“The squish band is very thin and surrounded by relatively cooler surfaces causing the gases that remain in the squish band to burn poorly or not at all. In addition, the flame front cannot reach in such small an area to ignite the gases. The result is that some heat (energy, power) is left on the table”
(a) to enhance turbulence due to rapid ingestion of gas into the combustion chamber, hence increasing the burning rate of the mixture and (b) to reduce the volume of the unburned gas in the boundary layer of cool gas near the piston top and cylinder head surfaces. Typically, gas trapped in the squish area doesn't burn, even if the squish band clearance is relatively large.
There are two positive effects to this. Firstly, the mixture where the head and the piston are in close proximity loses its heat so rapidly that it cannot ignite, so hot end gases can't cause detonation. The down side of this is that, unless the thin layer of mixture is very thin, most of this unburnt mixture goes out the exhaust without doing any work, as previously mentioned.
Cooling: The fuel trapped in the squish does not burn readily, due to the cooling proximity of the piston crown and the metal in the squish band. This provides a small cooling effect.
wow.
them thar is some big ole words you no!!!!
so when the flames are still going at 15 degrees atdc, do you suppose them "endgasses" remember they ain't sposed to cook off????
I get the issue now. You guys take info off the net (THAT IS NOT PEER REVIEWED) and think it is Fact.
That's been our problem all along. Now I understand you guys.
Aren't we all glad M.D.'s don't do the same.
Fred
You do have to be selective for sure; my, that is a nice strawman you throw up, but it is no proof whatsoever that there is any error!
How about pointing out any fallacy in those links instead of merely trying to suggest that there might be some? I think there is lots of peer reviewed work in regards to unburned hydro carbons in exhaust to support it as a fact that all of the charge does not burn or if it does burn, too late to be very effective.
I think the statement has been made that squish volume and clearance (excepting for its affect on compression) makes no difference in performance, and someone is trying to wiggle out of it or cast doubts on TW's allegation to the contrary.
Not too long ago the statements were made about how simple this should all be, now you are comparing it to the work of doctors. You definitely have the tendency to make the story suit the thrust of the moment. I think it does not take much critical thinking here, to see exactly who is trying to fly unsupported or unsupportable statements.
Where should I go from here saw fans?
Fred
Since you are asking... how about being more conclusive with your arguments,
in terms of evidence to substantiate the claims. If you can't do that, at least can the "attitude", and at least make your posts more pleasurable to contemplate.
Since you are asking... how about being more conclusive with your arguments,
in terms of evidence to substantiate the claims. If you can't do that, at least can the "attitude", and at least make your posts more pleasurable to contemplate.
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