anti-lag system

[Greg Hermann]

>What if you injected H2O into the exhaust manifold to create steam?
>Would the expanding steam drive the turbine?

H2O in the exhaust manifold has a similar effect to using a smaller A/R
ratio turbine housing. At lower engine speeds, it will improve turbine
performance. As you approach the ideal operating flow for the turbine
housing which is being used, the water will hinder performance. Bottom
line--the water is some help if done right, but a hindrance if NOT done
right.

Coating and/or insulating the exhaust manifold will have more of a positive
effect. Remember--it is HEAT  ENERGY in the exhaust gasses which drives the
turbine. The more heat you keep in the exhaust gas prior to the turbine,
the more efficiently the turbine will operate. (Hotter gas going through
the turbine=lower absolute pressure ratio across the turbine for the same
power output--thus less back pressure on the motor, and more power output
at the same boost level.

Greg


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