Vapor vs mist

According to George Wiseman, there are 3 basic types of water injection:
1) Water Vapor
2) Liquid
3) Steam

I've not tried the steam injection yet, but between the liquid and vapor injection, the liquid does wonders in quenching detonation and making power, but seems to reduce fuel economy. My guess is that the latent heat of evaporation effect cools the intake charge making it harder for the fuel to vaporize.

The water vapor injection, where you just bubble air (PCV gasses?) up through a water bubbler did get a tad bit more mileage on the vehicles I played with. Here you get the water injection benefits without cooling the intake charge substantially.

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Vapor vs mist

ssheen's picture

Hi Mike,

When you used the water injection was it on a carb or EFI vehicle? O2 equiped?

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Vapor vs mist

mpgmike's picture

I installed the water injection on my '70 Duster, my brother's '87 Nissan pick-up EFI w/O2, '83 Rampage carb non-feedback, '73 Ply Road Runner, '73 Ford F-250, '95 Dodge Ram 1500 EFI w/O2, and maybe another one or two that I'll remember while laying in bed tonight.

My guess is you're questioning the effects on the OBC. The '70 Duster was the only one I used water vapor on, the rest were a liquid-into-the-PCV-hose designs. Regardless of whether feedback or not, the liquid didn't help mileage, but did help with detonation & power. Never set any codes on the O2 engines.

Mike

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Water injection for mileage.

mpgnut's picture

Are there any commercially available water injection kits designed for gas mileage? There seem to be several listed on google, and even the google ads to the right. Seems most are geared for high performance, turbo/supercharged engines. I'd like to find one more for mileage. Is anybody aware of such a kit?

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Vapor vs mist

ssheen's picture

http://www.eagle-research.com George has manuals on water injection. I have one here. You could make one pretty easy. I would use a progressive controller though instead of engine vacuum alone. As well, you would need a EIFE or custom cal. Injecting water makes the O2 sensor think things are lean and will actually increase the fuel.

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ER h2o inj

iburnh2o's picture

Scott

I just ordered the eagle-research manual for water injection.
Wondering if you are familiar with his Gas Saver Secrets manual?
If so, is there anything new/different in the Water Injection manual?

I've been looking at options like that of Snow Performance....
Where the system adjust the flow of the water in proportion to that of the fuel by using the computer/map signal.

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Vapor vs mist

ssheen's picture

I have both those manuals, and water as fuel, Hyzor, hyco, hyco dt.

He goes more into circuits to control things. Have a look at this injection system. It uses a progressive controller. The fellow is really easy to talk to and willing to do changes. I do not have his kit. I am hoping to make my own.

http://www.turbododge.com/forums/showthread.php?t=99859

PS. I added your Yahoo IM address to my IM Client. :D

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Progressive water injection system, DIY...low $ (relatively)

iburnh2o's picture

Been researching water injection systems and while there is quite a bit of info on simpler bubblers I was hoping for something more.

http://snowperformance.net/proddetail.asp?prod=auto022

Has a pretty nice one that works off the MAP. About $400.

You can DIY for much less here:

http://www.autospeed.com/cms/A_1539/article.html

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Vapor vs mist

mpgmike's picture

That doggone Autospeed is out of Austrailia. I was going to buy the book, but shipping was more than the stinking book! :!: I still want it in the worst way, but I'm going to check Amazon.com & Ebay to see if I can get it cheaper than having it shipped from AU.

Mike

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Autospeed

iburnh2o's picture

I'm looking at placing an order, and I am a member of the site. Maybe we can combine to save on shipping?

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Vapor vs mist

mpgmike's picture

You have Paypal, right? Anybody else want to jump in and do a group buy? Heck, if enough of us are interested, maybe we can just do the "container" thing :lol:

Mike

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Re: Progressive water injection system, DIY...low $ (relativ

E=mc2's picture

iburnh2o wrote:

Been researching water injection systems and while there is quite a bit of info on simpler bubblers I was hoping for something more.

There is a lot of info on water injection in this Yahoo group:

http://groups.yahoo.com/group/supercarbs/

...finding it can be a problem though.

I had a system set up on a carbed Tercel 1.5L...using a port on the carb that would only draw water above idle. Had problems finding a valve that would regulate the water flow.

One time I was testing this with a gallon jug sitting on the pass side floor and put over a quart of water into the engine in 50 miles...maybe a 20% rate...where I was burning that much water vs gas. Just had a light miss under medium acceleration.

Result was that the engine went 9K miles on a quart of oil for that oil change vs the usual 5K....good way to decarbon an engine? Next oil change was back to 5K.

I never did see a mpg gain...last tested at a 2% rate....though some claim they do.

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Vapor vs mist

mpgmike's picture

I saw someone using a heater control valve that is normally open, and closed when vacuum is applied. This way, under high vacuum very little vapor passes to the engine, but under acceleration, the valve opens and the engine gets lots of vapor.

Mike

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Re: Progressive water injection system, DIY...low $ (relativ

Pinhead's picture

iburnh2o wrote:

You can DIY for much less here:

http://www.autospeed.com/cms/A_1539/article.html

You have to buy/register to read the article... Does anyone already have access to it??

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Re: Progressive water injection system, DIY...low $ (relativ

iburnh2o's picture

Pinhead wrote:

iburnh2o wrote:
You can DIY for much less here:

http://www.autospeed.com/cms/A_1539/article.html

You have to buy/register to read the article... Does anyone already have access to it??

yep

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