Re: The heat melts my car's performance!

["Gary Derian" <gderian@xxxxxxxxxxxx>]

Not picking 'oles, just trying to clear up bad science when I see it.

Water injection is a great anti-detonant.  It does not dissociate into
hydrogen and oxygen in a car engine.  It turns to steam, absorbing heat
along the way.

It takes a great deal of energy input to split water into its constituents.
That energy would return when they combined back into water.  Start with
water, end with water, no net gain.

Gary Derian <gderian@domain.elided>

> >>>>>>>>>>>>>>>
> Oxygen is a component of water but that has nothing to do with its
> usefulness when injected into an engine.  Water vaporizes and absorbs heat
> during the compression stroke and maybe even during the power stroke.
That
> reduces detonation.
> >>>>>>>>>>>>>>>
>
>
> From your argument you can deduce that turbocharging and supercharging
have no effect
> either as you are simply putting more of the same into the
cylinders???(tongue in
> cheek and argument taken to its extreme...) I dont think so. Adding water,
which
> consists of hydrogen, a highly explosive gas, and oxygen, a very good
supporter of
> combustion is bound to have an effect on power. If nothing else the oxygen
will make
> the combustion process more efficient. However, its primary purpose is to
cool the
> charge making it more dense, and i would agree, also to limit detonation.
> A final point, if injecting water has no effect other than to cool the
incomming
> charge, why do manufacturers go to all the trouble and expense of
designing it,
> fitting it, re-adjusting all their ECU points etc when all they need is a
slightly
> bigger intercooler?
>
> There's always someone willing to pick 'oles in every little thing you
> say...........:-)
>
> Sean
> 95 328iCoupe Sport
> + Proprietor SM Auto Engineering!
>

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