What they don't mention is emulsified fuels also carry heavy penalties in power output and fuel consumption.

So you're saying this is not true:
"Test results showed significant drops in emissions and an increase of fuel efficiency of 10-15%"?

As to the "heavy" penalty on power, I doubt it. Yes, the fuel will have a lower energy density, but the expanding water will turn more of the fuel-energy into power. Most likely the power difference will be a wash.

:D

As usual, overdramatization bordering with direct falsification. Reduction in fuel consumption (calorific) is closer to 2-3%, and in most cases is achieved only on old diesels with low-pressure mechanical injection. Reduction in emission generation is very real, thought: about 7% in NOx and surprisingly 3% diesel soot per 10% water blended.

Water emulsification is well established and widespread emission control technology, very cost effective where a lot of old diesels work, like in ports and terminals.

The drawbacks are: water should be distilled, max power output suffers unless fuel injection system is modified to inject bigger volume, and in some cases there were reports about excessive fuel system wear.

Andrey,

Sounds like what you are referring to is the old surfactant method of emulsification. The method being discussed here is not "well established" nor "widespread"

This method supposedly doesn't need distilled water either. . .

It sounds like this could work with petro-based diesel. What about about biodiesel?

Rocket Scientist;
It does not really matter what method of emulsification is used. If they developed better way to produce water emulsion, without expensive surfactant agents – good. Diesel/water emulsion is by far the most effective way to reduce NOx emissions from fleet diesel engines concentrated at one location. One blending installation on the site could service all of them. Port servicing equipment is good example. As I know, this method is certified by CARB and is used at Long Beach port in LA.

Distilled water is a must because regular water deposits salts at evaporation, which could clog injectors and for sure significantly increase engine liners/piston rings wear due to abrasive properties of these salts. For stationary installations relatively cheap reverse osmosis water demineralization system solves this problem quite economically. In most cases, heavy diesel engines are derated, and have ample reserve of injector’s capacity to compensate for less energy dense fuel.

Vin Diesel;

Addition of ethanol to diesel/water emulsion is very intriguing indeed, but I am not aware of such tests. Ethanol blended gasoline is the best way to keep gas tank on your car free of accumulated water and should be used periodically by everyone as part of preventive maintenance.

What is not discussed is the problems with water going thru the injection pump. Water is a non issue to increased wear and tear "to a point" inside the cylinders where combustion occurs.

Inside the IP this is a very different thing. Micro explosions* (cavitation) caused by differences in expansion of the water molecule compared to the oil molecule during pressurizing in the Injection Pump can cause severe damage to the IP.

*(micro explosion is a simple non scientific description of cavitation and damage it causes to IP components. Do a search about "diesel, cavitation, injection pump" for more information)

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Looking for surfactant in quantity

How can I get more information about the process and the surfactant you recomend?
Freddy.

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