Forced induction (was variable (non variable) whatever...)

[Pete Datcuk]

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  This cannot be correct by your own explanation.  The mass flow of =
exhaust is the same whether at the beginning of the exhaust system or =
the end.  Mass doesn't disappear when the energy it contains is removed =
from the exhaust, it simply comes out the other side of the turbine in a =
denser package.  Yes, more energy is present when there is more gas(ie =
higher mass flow), and thus a higher flow rate, but is worthless without =
the heat transfer(ie expanding the gas).

Pete Datcuk
Mechanical Engineer
Sewell, NJ
'87 Fiero, soon to be Northstar'ed :-)
'67 Jeep Commando, to be risen from the dead ;-)


-----Original Message-----
From:	Nimpoc at aol.com=20
Sent:	Tuesday, February 24, 1998 1:35 PM
To:	diy_efi at esl.eng.ohio-state.edu
Subject:	Forced induction (was variable (non variable) whatever...)
<snip>=20
Turbines derive their power from the mass flow of the exhaust, not just =
the
heat nor the pressure. Some also claim they can derive power from the =
acoustic
energy present... don't know about that. Sure a turbine won't make as =
much
power at the end of the exhaust than at the manifold, look at how much =
volume
is lost due to temp.
<snip>=20
Mike Kent
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