Water Injection

[BuckNasty]

I was just wondering, short and simple, what exactly does water injection do. . .I really don't have any idea what makes it work, or exactly what it does. . .any help?

 

[oddrob]

Short and simple, it helps suppress detonation.

 

[fastcarfreak]

basically it uses water to "soak up" the heat out of the air. I dont want to get into the thermodynamics of it, because most people probably wouldnt understand it anyways. For more info on the subject take a thermodynamics class at a local college, if they offer it.

 

[Defiant]

They're not completely sure what it does, but the effects are all good.

http://autos.groups.yahoo.com/group/DSM_water_injection/

http://www.h20injection.com/forum/phpBB2/

http://www.aquatune.com/index.asp

http://members.aol.com/raydorman/

http://waterinjectionsystems.com/

http://www.turbomirage.com/water.html

 

[coolingmist]

Water injection is a great way to prevent detonation and you can even gain power if you do it right.

Feel free to visit me in the vendor section or at www.coolingmist.com. thanks!

 

[FireyIce01]

Here's a basic explainiation

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During World War II, the military made extensive use of water injection in high performance piston aircraft engines. Later, water injection was used by both civilian and military jet aircraft to provide extra thrust, principally on takeoff. Even today, water injection systems are available that can be installed in automobiles. The fact is that, within certain limits, these systems actually do increase power. Referring back to Figure 2-2, note that the latent heat of vaporization for gasoline is about 140 Btu/lb and for ethanol about 361 Btu/lb. Water has a latent heat of about 700 Btu/lb! Therefore, if a little water is injected into the carburetor in the form of an ultra-fine mist, the latent heat of the water will cool the charge and increase volumetric efficiency. In addition, when the charge is fired in the cylinder, the water will turn to high-pressure steam and provide additional power due to the pressure exerted by the steam. There are definite limits, however, to the amount of water that can be injected. Too much will cause excessive cooling and misfiring.

The use of water injection with a gasoline fueled engine requires a separate metering and injection system because water and gasoline do not mix. Ethanol and water, however, do mix and the benefits of water injection can be had simply by adding the desired amount of water to the alcohol in the fuel tank.