Pablo

iTrader: (1)

Some "experts" here dont seem to know what the word vacuum means so i thought i should provide them with the definition


Vacuum- 1 A space with nothing at all in it; completely empty space 2 a) an enclosed space, as that inside a vacuum tube, out which most of the air or gas has been taken, as by pumping b) the degree to which pressure has been brought below atmospheric pressure 3 Space left empty by the removal or absence of something usually found in it; void: often used figuratively

Can someone please show me the dictionary with the definition of vacuum expanded to include "pressure differential" as defined by a member of this board? Im just trying to expand my limited knowledge

merf23

This definition "the degree to which pressure has been brought below atmospheric pressure" compares pressure "A" (arbitrarily chosen label) to atmospheric pressure, "B". The amount of vacuum is the difference, or "differential", between the 2 pressures, ie vacuum = B - A. Since we dont live in a true vacuum [ A space with nothing at all in it; completely empty space], vacuum is always a relative effect. Since engines dont see true atmospheric pressure too often, we must consider the relative pressures between the top of the carb (or FI) and the manifold. The differential between these 2 pressures is what we call vacuum, despite the fact that there is no 'true' vacuum. Its a matter of semantics.
Try looking at your question the other way, assuming that "differential" is the correct description for the effect rather than the commonly used "vacuum" and youll find you answer


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Jester

Call it a subtle point of logic, but usually locking a post doesn't mean the moderater wants it started back up in another thread. I'm moving this to the Pointless Debate Board.

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