My thought was that if you had a full reservoir at the start (pre-charged
from an external compressor), and a turbo that was harge enough to provide
more than enough to satisfy the engine demands and demp the extra in to the
reservoir, you should be able to maintain proper power throughout the
duration of the trip (or race). I am sure that is an over simplification of
a very complex calculation.
BTW, I wasn't thinking of doing anything with the Cruze. Except for the
noticeable lag at very low speeds it runs fine.
Joe
_____
From: bownes@seiri.com [mailto:bownes@seiri.com] On Behalf Of robert bownes
Sent: Monday, June 30, 2014 8:06 PM
To: Joe Curry
Cc: FOT
Subject: Re: [Fot] Turbocharger
I started to put all the math down on paper, but it boils down to the turbo
doesn't generate enough pressure to pressurize the reservoir with enough
air, and, in order to move enough air, you need a fairly large opening from
the reservoir (remember, it is slowed down by smaller pipes), and some
decent pressure inside the reservoir. The turbo only generates what the
engine needs (unless you are opening the pop off valve...) Thus, the turbo
would have to either generate more pressure than you use (the excess goes
into the reservoir), or you would have to run the turbo without using any
boost to fill the reservoir (aka a compressor).
TANSTAAFL.
A pretty decent explanation can be found here:
http://www.gnttype.org/techarea/turbo/turboflow.html
On Mon, Jun 30, 2014 at 9:39 PM, Joe Curry <spitlist@cox.net> wrote:
I just purchased a new Chevy Cruze with a 1.4 liter turbocharged engine.
The first thing I noticed is the dreaded turbo lag.
It got me to thinking (which is dangerous).
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? 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.
Am I all wet. Or is this a sound concept? If so, why hasn't someone thought
of this before?
Joe C.
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