[Fot] Turbocharger

[Randall]

> Why can't someone design a system whereby the turbo unit is 
> used to charge a
> reservoir that would in turn send pressurized air to the fuel 
> system on
> demand? 

In addition to the objections already raised, you'd need a huge reservoir, and you'd have to have an oversized turbo to fill it,
which would cut into engine power.

> That way, there is no turbo lag.  The waste gate on 
> the turbo would
> still be used to keep the thing from over-charging the reservoir.

The "hot setup" would be a variable nozzle turbo, with a microprocessor to adjust the nozzle size according to conditions.  For good
off-the-line performance, a small nozzle will accelerate the turbo spool much faster; while a larger nozzle reduces backpressure for
better performance at high rpm.  Such things do exist, but tend to be expensive and trouble-prone.  ISTR that Porsche 911 used them
for a few years, as well as others.

Here's some advertising material on the concept:
http://www.blaylock-turbo.com/switchbladeturbo.asp

Randall