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Old 02-11-2010, 03:21 PM   #1 (permalink)
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oldscoob - '87 subaru wagon gl/dr
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Exclamation super stoich, slow example

I watch the "nerdy" periodic videos on you tube. I have confused some with the term "super stoich". It is simply a mixture of fuel and air returning maximum explosion in an internal chamber..but it can be external, like the gas plant explosion in middletown ct recently. For a car, realtime draft hjard set for the engine is the only real super stoichs, and they are getting more an more rare..
anyway, check this simple experiment out. The methane fuel, the air, awaiting its natural super stoich from a can.




a carb can do this with low compression. Can anyone guess why fuel injection will never be an ecomodded winner?

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Old 02-11-2010, 03:49 PM   #2 (permalink)
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because of an invalid premise? The injectors put the fuel where it is needed, especially with direct injection. They can respond to more sensors and feedback (i.e. wideband) by the next intake event, i.e. immediately.

You do lose some energy pressurizing the fuel and operating the injectors/computer, so it isn't perfect, and there is a tradeoff between pressure and "atomization", but still far more accurate than any carburettor.


Anyway, those guys were boring me, I had to look at some other videos Was there a point buried in there?

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Old 02-11-2010, 06:06 PM   #3 (permalink)
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...uh, didn't anyone else recognize that "super stoich" as a marketing term and not a hydrocarbon combustion scientific term?

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