> I can get as much power out of a non-turbo as a turbo truck. The main rea=
son
> these trucks were turboed was for emissions.
That is definitely wrong. If you have an engine with a given cylinder
capacity, you can never get the same power without turbo as you can get
with a turbocharger.
A diesel must always have a surplus of air (oxygen) in the cylinder.
You can inject more fuel, but if you don't have the air to burn it,
the effect is not more power, it is only a lot of unburned carbon=20
in the exhaust fumes, the well known black smoke.
A charger (turbo or mechanical driven) presses more air into the
cylinder. This allows you to burn more fuel without smoke and to get
more power. You can also use the extra air to burn the fuel with more
oxygen surplus to burn it without any black smoke.
If you use a charging pressure of 1 bar (15 psi) you have twice as
much air in the cylinder as you have without charger. This allows=20
to burn twice the mass of fuel at a time and this means twice the
power.
So a non turbo engine must have a bigger cylinder capacity to perform
the same power.
Best reagards
Andreas
-Automotive engineer-
=20
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