Water Injection

[J W Hodgson]

Another great reference on water injection is in Obert's "Internal
Combustion Engines and Air Pollution".  He shows basically that the
beneficial effect of water injection is to suppress knock and if it is
used on an engine that is not knocking it has no beneficial effect (unless
it allows more spark timing that results in greater torque).  Water
injection is very effective in reducing NOx emissions (as is the addition
of any diluent).



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