water inj. I know what it is, but...

[lmills]

I can't find anyone in the search that is running it or has tried it. I found one person that spoke of a kit that you could buy and install for about $500, but I couldn't find any posts with the results. Wouldn't this be a good issue for high EGT's, or is it just old school?

 

[Prairie Dog]

It worked great in gassers but it only takes a tiny bit of water ingestion to crack a piston in a Diesel due to the high compression. I'd be VERY afraid!

 

[TxDieselKid]

Some of those BIG Tractor Pullers use them just to hold the temps down the 30 seconds it takes to make a pull. But they get teardowns at least every season also.



Andrew

 

[lmills]

I am familiar with tractor pullers and such. I was wondering if anyone has any input on a system like this with real world testing.

 

[TxDieselKid]

Originally posted by lmills

I am familiar with tractor pullers and such. I was wondering if anyone has any input on a system like this with real world testing.

Aqua Mist had a guy at our Texas Rally this year. VERY intreging setup. If I remember right, that gentleman became a member. Look up fellow member Jim Fulmer(NOT Fuller) as he was thinking about trying it.



Andrew

 

[nickleinonen]

how about running a water fogger/mister grid in front of the intercooler. when needed, switch it on to end up getting a little cooler air charge

 

[Gonzo 1066]

Water=good

I am running a water injection on my kinda stock 466 ci diesel pulling tractor. It works GREAT!!!!!!!!!! I am not using a intercooler so my intake air is very hot. In the 400 degree range at 48 psi manifold. The water mist into the compressor wheel drops my EGT's at least 200 degrees. You can get to much water but if you only inject above a preset manifold pressure it works well. I would monitor the temps after the charge cooler to make sure you are above 212 degrees. If intake is above that temp the water mist will flash to steam at piont of injection. Hence no hydraulic engine lock. On a 20 second pull my tractor only uses about a pint of alcohol water mix. The idea is not to burn water but to cool the charge air.

 

[CRSmith]

Caution:

Quote: "I would monitor the temps after the charge cooler to make sure you are above 212 degrees. "



The boiling point of water is raised as pressure increases. At 48psi the boiling point will be well above 212F. 212F is the boiling pt at sea level atmospheric pressure. It's the same concept that makes water boil at a lower temp when cooking at high altitude. I'd have to look up how to calculate the new boiling point at Xpsi manifold pressure, but just keep it in mind before you go using 212 as the gospel temp to inject.

 

[Mark_Kendrick]

The 212* temp would really bite.



Water/methanol injection works very well. I have seen 600* + drops in egts on single charge trucks.

the Chargers sound really cool as they wind up after injection as the liquid cools the air charge. Under proper conditions the boost drops due to extreme cooling while the power increases and EGTs drop due to the denser air charge.



When done properly it has a 100+ hp net with a reduction in EGTs.



You have to watch the volume of methanol to ensure you get no detonation.



Gimme a call if you want to learn a little more about it.



Later,

Mark

 

[Gonzo 1066]

Re: Caution:

Originally posted by reduaram

Quote: "I would monitor the temps after the charge cooler to make sure you are above 212 degrees. "



The boiling point of water is raised as pressure increases. At 48psi the boiling point will be well above 212F. 212F is the boiling pt at sea level atmospheric pressure. It's the same concept that makes water boil at a lower temp when cooking at high altitude. I'd have to look up how to calculate the new boiling point at Xpsi manifold pressure, but just keep it in mind before you go using 212 as the gospel temp to inject.

Sorry I forgot my basic phisics. You are correct in your statement. We have not come close to the temp drop that would condence the water out of the charge air.