With a carb the amount of fuel dumped in is determined by the jets or
needles so that even given carb at any given engine speed (air flow) can be
made
to run rich. Same thing with fuel injection if it's not set correctly,
injectors too big etc.
A lot of factors limit how much AIR can be drawn into the engine
(volumetric efficiency??) and given you can always add more fuel to the air
than it
needs (air/fuel mixture is too rich) it is the overall breathing efficiency
of the engine that limits power. The engine sucks in as much air as it is
capable of whether carb or injection.
What a turbo or super charger does is FORCE FEED AIR INTO THE ENGINE. The
engine doesn't suck air rather it has air pumped into it, sometimes at
pressure (tech difference between various types of supercharger and turbo
charging).
More air = more fuel though it's still possible to get a super or turbo
charged engine to run too rich. It's also possible to have to little fuel
with just a carb (or injection) and super or turbo charging.
If the turbo or supercharger just put more air into the engine for any
given amount of fuel the engine would simply run lean and make no more power
than without a super or turbo charger.
Weslake-Monza 1330
In a message dated 05/05/2010 22:22:24 GMT Daylight Time,
eric.t.cartman@gmail.com writes:
With a carb, the amount of fuel dumped in is determined by the speed of the
air flow. So as more CFM is fed in to the venturis, more gas is pulled in
to the cylinder. With a turbo or supercharger, it uses the same amount of
fuel as non-boost system, it just crams a lot more air in so that you get
more energy out of the fuel at combustion time.
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