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

[Darryl Snover]

Hmmm....But doesn't (don't) gases contract as they cool, thus making the
actual volume less (and thus making Mikes statement more or less true)?




>  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
>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>
>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>
>Mike Kent


Best Regards,

Darryl Snover
Senior Programmer
Technologies Plus, Inc.