What will they think of next? (link)

[rnrn]

Found this in this month's Popular Mechanics-

http://aquatune.com/index.asp

[DueyT]

Actually that kind of thing has been around for at least 30 years. My dad had a TVI ("turbo vapor injection") system on his '73 Plymouth Sports Suburban wagon (400ci V8) it was an injection molded bottle with a hose to an "injector venturi" tapped into the intake manifold. There was a special fluid (that smelled remakably like washer fluid) but you could also use plain water with almost the same effect. It actually did work...added about 8% to 10% better mileage. You could tell when the bottle under the hood ran out because the mileage did actually drop. Haven't heard of this system for years and years...seems it comes with a spiffy electric injection pump now!

Duey

[632 Regal]

old carburetored cars, used a small orfice adapter and simply put it to part throttle vacumme and got some significant increases in mileage. This was back when 20mpg wasnt even heard of.

[mikemaster]

Yeah, water injection is fairly popular on turbo cars now. Aquamist makes a system that's supposed to be good.

[rnrn]

Seems like a little could go a long way--in terms of potential problems and repairs ; )

[632 Regal]

however the water really prevents detonation, cleans valves, piston tops etc.

[Kamil]

Yeah, water injection is fairly popular on turbo cars now. Aquamist makes a system that's supposed to be good.

Yes, but don't mistake them with the intercooler water squirters (an intercooler cooler, if you will) that are installed on the Subaru STi and Mitsu Evo 8.

[mikemaster]

No, they are entirely different.

There are some experts on it here:
click here

[Jon K]

Yes, but don't mistake them with the intercooler water squirters (an intercooler cooler, if you will) that are installed on the Subaru STi and Mitsu Evo 8.

No he is aware of his mentioning, i am looking into alcohol/water injection

[tim]

about 50 years ago BMW (then BFW- Bayerische Flugwerke), and Daimler were making v-12's that had water/methanol injection standard. Except they were going into planes! In that application, it gave the planes "war-emergency power" at low altitudes, and allowed the planes to fly higher, by creating higher manifold pressure.

You could only use it for a few minutes in a water cooled plane like the bf109, but the fw190's which were air cooled, had a big tank for water/methanol, as did most of the later allied aircraft such as the p47 and p51, when the combat shifted to high altitude bombing escort and attack.

I think the principle is the same as nitrous, cold air etc. The denser the air in the intake (either by temperature, or additives), and the higher the manifold pressure (either by turbo, supercharge, or increased compression), the more efficient the combustion. Whether you use it for mileage or power, it boils down to efficiency. If your application is mileage, I doubt it would affect the wear interval of engine components.