[Diy_efi] Turbine inlet & outlet pressures, housing A/Rs

[Greg Hermann]

At 7:21 AM 1/6/03, Grant Beaty wrote:
>Does anyone know how turbine outlet pressure effect the inlet pressures (TIP
>& TOP)? Does it work off of a pressure ratio like the compressor, or is it
>linear, and increasing TOP by 1 psi results in a 1 psi increase in TIP?

Absolute pressure ratio, all the way.
>
>How about exhaust housing a/rs. Will a larger a/r always produce a lower
>TIP,

Sure should.

Higher EGT at the turbine inlet should require a bit lower pressure ratio
across the turbine to get the same shaft power (boost level at a given
engine rpm) out of the compressor.

Greg
>
>Thanks for any help,
>Grant Beaty



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