Electrify diesel to reduce its viscosity

[julier]

I know it sounds like one more scam, but it sounds pretty serious. It seems that with an electric polarization of diesel fuel (at 1kV / mm), its viscosity is significantly reduced, which reduces the size of the droplets, and therefore improves spraying and combustion. On a Mercedes 300D (probably not very young), researchers had 16% savings on the road (10% in the city). But the savings may be less on a modern car with high pressure injectors. It is not an electro-spray system. More info:

Fuel thinner turns diesel cars into greener machines

* 16:41 September 29, 2008
*NewScientist.com news service
*Phil McKenna

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*Rongjia Tao, Temple University
*CFD Research Corporation



A small gadget that can be fitted to diesel engines boosts fuel efficiency by up to 19% and can make them run more cleanly, engineers report.

A weak electric field is used to make fuel less viscous before it is injected into the engine. That makes it possible to spray smaller drops that burn more completely.

The device was developed at Temple University in Philadelphia, Pennsylvania and costs less than $ 200 to produce.

In tests over six months on a 2002 Mercedes-Benz 300D sedan, a prototype device increased fuel efficiency by 12 to 15% under urban driving conditions, and 19% in highway driving - taking it from 32 to 38 miles per gallon.

“This is the biggest efficiency increase since the advent of fuel injection,” claims Rongjia Tao from Temple University. The device has been licensed to Californian firm Save the World Air, which is now testing it in road haulage vehicles.
Fluctuating flow

An electric field makes diesel thinner because some molecules in the fuel become charged and aggregate together, reducing their overall surface area. That means less friction between them, and a less viscous fuel.

Tao and colleagues believe fuel efficiency gains were lower under stop-start urban driving conditions because the rate at which fuel flows through their device constantly varies.

They are working on a version that varies its electric field to match fuel flow rate and keep viscosity constantly reduced.

Matt Thomas of CFD Research Corporation works on similar fuel electrification techniques. He says fitting the device to new cars will not produce such spectacular efficiency gains, but adds that it would still cut emissions.

"[If] you charge spray prior to fuel injection you could lower particulate emissions by as much as a factor of 10."

Journal reference: Energy and Fuels (DOI: 10.1021 / ef8004898)

Energy and Fuels - Learn more about the looming energy crisis in our comprehensive special report.

http://technology.newscientist.com/arti ... hines.html

The full article:

http://pubs.acs.org/cgi-bin/abstract.cg ... 04898.html

[Gregconstruct]

I think this topic has already been discussed on the forum

[Bibiphoque]

Hello,
Upcoming tests:
http://www.physorg.com/news141915700.html

@+

[Capt_Maloche]

The easiest way is to preheat the diesel to 60 ° C to reduce its viscosity very significantly

At Danfoss, for oil burners, there are self-regulating heaters: http://fr.cd.danfoss.com/Content/2B2EB3 ... SIT32.html

But I rather think that it is enough to heat the injection tubes after the pump to 2000bar (anyway) with the coolant which is maintained around 80 ° C.

[Christophe]

Maloche on Hdi there are fuel coolers on the return of uninjected fuel so the pressure is enough to heat the fuel already quite a bit!

Otherwise objection: it does not seem to me to be a scam at all! This research is heavy and serious ... To see if it comes out one day?

In any case, it is not that "simple" to put in place since it is the whole injector that needs to be changed.

I do not think that it is only the viscosity which plays on the smoothness of the spraying but also the surface tension.

Here is a very complete document on the question:

http://pubs.acs.org/cgi-bin/sample.cgi/ ... 004898.pdf

Finally it joins the doping with water in case the water is ionized in the reactor! Which is most likely: https://www.econologie.com/ionisation-de ... -3324.html

[Capt_Maloche]

Maloche on Hdi there are fuel coolers on the return of uninjected fuel so the pressure is enough to heat the fuel already quite a bit!

yes, coolers on the return, so as not to heat the tank

and in your opinion, at what temperature does the GO reach the end of the injector? at the engine block T °?

[julier]

Maloche on Hdi there are fuel coolers on the return of uninjected fuel so the pressure is enough to heat the fuel already quite a bit!

Otherwise objection: it does not seem to me to be a scam at all! This research is heavy and serious ... To see if it comes out one day?

I was saying "looks like a scam" because there are quite a few on the market! But there indeed it seemed to me quite serious.

Indeed, probably not very suitable for high pressure engines, for this reason and also because they already spray very finely.

In any case, it is not that "simple" to put in place since it is the whole injector that needs to be changed.

Not really: according to their tests, the fuel remains appreciably fluidized for a few minutes, it is therefore in the fuel circuit that it must be put, without changing the entire injector unlike electrospray systems (including they signal complexity, and the possibility that they expend significant energy).

I do not think that it is only the viscosity which plays on the smoothness of the spraying but also the surface tension.

Here is a very complete document on the question:

http://pubs.acs.org/cgi-bin/sample.cgi/ ... 004898.pdf

Yes, this is the one I quoted in the original message! And this article talks about viscosity, specifying that if there is electrification it should only be very marginal.

Finally it joins the doping with water in case the water is ionized in the reactor! Which is most likely: https://www.econologie.com/ionisation-de ... -3324.html

The article describes a significant drop in viscosity, not ionization. But it is true that the results seem surprising for such a modest drop in viscosity.

As for the article on the ionization of water vapor: interesting theory, it remains to be tested. With all the people who hacked engines, the experience must be easy to do. If the theory is true:
- a few drops of vinegar in the water, and there should no longer be any gain
- dilute a little baking soda (or put a few drops of ammonia) in the water, and it should work better than ever

[Lietseu]

Hi ! Julier,

The pantone system tests are very successful! By looking a little, you will find all the answers on this subject, on econology

On behalf of all, I welcome you and withdraw to let you read quietly the many pages that will lead you from discovery to discovery.

Econological Greetings from Lietseu

[Christophe]

and in your opinion, at what temperature does the GO reach the end of the injector? at the engine block T °?

I think it can go up to 80 ° C ... if there are specialists in the room?

As for the article on the ionization of water vapor: interesting theory, it remains to be tested. With all the people who hacked engines, the experience must be easy to do. If the theory is true:
- a few drops of vinegar in the water, and there should no longer be any gain
- dilute a little baking soda (or put a few drops of ammonia) in the water, and it should work better than ever

No it is the delta compared to neutrality that counts! The higher it is, the more easily the water could ionize.

We advise to acidify the doping water because it is easier to lower the pH than to raise it ... quite simply because vinegar is easier to find than soda

[coucou789456]

Hello

in many large areas and all sellers of swimming pool products, there are these items to lower the pH or to increase it, at more than affordable prices

jeff