Mike

Yep

Big John
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On Fri, 23 Sep 2005 15:19:07 GMT, "Mike Rapoport"
wrote:

Water injection does not increase efficiency, it lowers it. The water goes
in as a liquid and goes out as a gas. The energy to do that comes from
burning fuel. It will always take more fuel to produce a given amount of
power with water injection than without. Water injection does allow higher
MP or higher compression so the engine can produce more power. Piston
engine fighters used it for more peak horsepower and some turbines use it
for the same purpose but it definately come at the price of higher fuel burn
per horsepower.

Mike


"Jeff" wrote in message
...
Some fellow is claiming he has a small device that will boost
combustion efficiency and save drivers lots of money, while reducing
emissions.

Obviously, plenty of claims have been made before, so I'm asking --
does this sound on the level?


Water injection has been around for a long time, both for internal
combustion and aircraft jet engines, it does improve efficiency, reduce
temperatures and reduce some emissions. It depends what is being claimed
for the actual device.

Regards
Jeff