Chemical Intercooling

[Little Joe]

I have been researching water/methanol injection:

Has anyone on the list played around with this ........ search shows that some of the supercharged 80 series have but no diesels.

I friend swears buy this, going so far as too remove the intercoolers on two of his 12V Cummins. He pulls long distance runs 3-4000km with HEAVY trailers and reports better power/economy and much quicker response from the older mechanical injection system.

Side benefit is that carbon is removed from combustion area's.

My calc show that .75USGPH would be about right for a 3b/13BT running 10+ psi boost and high engine loads.

Any realworld hands on opinions, with 3b/13bt??

Steve

 

[zander]

I have a system half way installed from Snow Performance right now (just the computer so far) on my 12ht. Will report back soon.

 

[Tapage]

I saw one system on the net .. but I thought maybe is quite simple with propane inejection adapted from a gasser ..

 

[wussyPup]

My calc show that .75USGPH would be about right for a 3b/13BT running 10+ psi boost and high engine loads.

Hi Steve,

Do you have a link that explains how to do the calc for different sized engines? I wonder if the 1HDT would enjoy this too.

Thanks, -Steve

 

[Little Joe]

water injection amount

Steve

I found the calc on a manufacturer website........Can't remember which one off hand.
It was based on the ideal amount of injection being a 30-50% mixture of water/alcohol. They claimed windshield washer(blue -40) with no soap additive(cheapest stuff) was the ticket.

Injection pressure has to be absolute minimum of 60psi>>perferably 100-150psi.

You need 15% water volume to fuel volume.

Manufacturer gave flow rates for its different nozzle sizes.........I used smallest available size.

I based my calc on max fuel(towing conditions) and would start injection at 10 psi and over in high load conditions.

Side benefit is that carbon is cleaned out of cyls.

Steve

 

[GLTHFJ60]

I thought that water injection to diesels was a very bad thing? I've heard of alcohol, methanol and propane injection but not water.

Wouldn't water destroy the engine?

 

[Tapage]

I thought that water injection to diesels was a very bad thing? I've heard of alcohol, methanol and propane injection but not water.

Wouldn't water destroy the engine?

Mist water in the throtle low the temp in the combustion chamber .. it means less EGT and you can add more boost ..