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Simple Device Claimed To Boost Fuel Efficiency By Up To 20%
Ponca City, We love you writes "Temple University physics professor Rongjia Tao has developed a simple device that could dramatically improve fuel efficiency in automobiles by as much as 20 percent. The device, attached to the fuel line of a car's engine near the fuel injector, creates an electric field that thins fuel, reducing its viscosity so that smaller droplets are injected into the engine. Because combustion starts at the droplet surface, smaller droplets lead to cleaner and more efficient combustion. Six months of road testing in a diesel-powered Mercedes-Benz automobile showed an increase from 32 miles per gallon to 38 mpg, a 20 percent boost, and a 12-15 percent gain in city driving. 'We expect the device will have wide applications on all types of internal combustion engines, present ones and future ones,' Tao wrote in the study published in Energy & Fuels. 'This discovery promises to significantly improve fuel efficiency in all types of internal combustion engine powered vehicles and at the same time will have far-reaching effects in reducing pollution of our environment,' says Larry F. Lemanski, Senior Vice President for Research and Strategic Initiatives at Temple."
"Slashdot: Fake News for Idiots, selected by Moronic so-called-Editors"
FFS. This is (a) clearly bollocks (b) these "devices you attach to the fuel line" have been around being sold by con-artists for at least TEN YEARS. Actually, it must be longer as I remember them from when I was AT SCHOOL!
I'm afraid that whoever put THIS rubbish up is clearly an Epsilon Minus semi-moron.
*sigh*
60+ posts all yelling snake oil, all from people clearly with little or no engine experience.
While this may or may not be snake oil, the theory behind the gain is sound -- I don't know if people missed or don't understand that he's talking about diesel engines, not gasoline or understand that diesel is basically oil, its considerably more viscous than gasoline is.
Atomization of diesel has always been an issue with it. There's a reason the engines heat the fuel (the opposite of what you do with gasoline) before injecting into the engine -- it helps thin it down and helps atomization.
I can't say what a magnetic field may or may not do to it -- possibly nothing, perhaps something about the way he rigged it is simply heating the fuel.
Knee jerk reactions, however, from people who clearly don't understand how diesel engines work, is more useless than a snakeoil charlatan -- because real innovations can be lost.
Perfect example: I had someone tell me that a particular half in thick plate made of some sort of composite plastic that goes between a carburetor and intake manifold on a car was snake oil just like the "turbo twist" or whatever those metal fins sold to go in an engines intake.
The guy didn't understand how carbs work -- didn't understand how much heat a plate like that blocks from the fuel bowl in the carb, or how much the increased linear path through the carb helps to stabilize the atomization of fuel, making it burn more consistently. So he was calling snake oil on a part that, frankly, is a requirement on a carbed engine.
So everyone, be skeptical but holy crap, chill out. As yourself if your opinion is educated before you go assuming its correct.
Want to massively improve fuel consumption nationwide? Make a fuel consumption meter mandatory in all cars. The display should show real-time consumption and average over the last fifty miles, in a prominent place.
I'm betting overall driving style would improve dramatically if people could see their consumption as they drive into the gas station forecourt.
No sig today...
I think the biggest reason for higher fuel efficiency in Europe is that fuel there has been more highly taxed for many years.
What do you pay in the US for petrol today - $4 a gallon? That translates into about GBP0.58p per litre at current exchange rates. The UK hasn't seen petrol prices that low for ten years. Current prices are nearer GBP1.11(petrol) - GBP1.25 (diesel) per litre. In US terms that is petrol at £7.50 a US gallon.
If you paid that much or fuel, you would care a lot more about fuel efficiency.
Ultimately Europeans are no greener than Americans - we are just being given more encouragement to be green by Adam Smith's "invisible hand".
Now, we have this thing. I'm no physicist, at least one with a college degree, but I see one really big problem with this method. A bottleneck. Specifically, an injector. This is the exact same problem that is inherent in the design of the "Tornado"®. Sure, it'll spin the air into a neato vortex, but that vortex goes to hell (in a handbasket) once it tries to maneuver through the intake manifold, and you're right back to laminar flow. Well, it looked good on paper (and TV).
Well I'm a chemist and I have the degree to prove it. You are right and you are wrong. Just because the fluid moves past the point of disturbance doesn't mean that it automatically and immediately becomes laminar. There will be a period of time before the flow settles back down. The question becomes, is this "settling" time long enough for the fluid to make it past the injector and affect the droplet size? Well that's the million-dollar question and you can't say for sure until it is tested through experimentation.
In this case it IS possible to form polar molecules and ions through the use of magnetism and electric fields. It will also take a period of time before these changes will be reversed. The questions are will these changes affect droplet size and can the magnitude of these changes be great enough by the time the fluid makes it past the injector. Those, again, are the million-dollar questions. The only thing which will answer these questions is thorough testing. Unless you have personally done scientifically valid testing on these claims you can't say for sure one way or the other whether this device will work.
Yes, in the past there have been a lot of "snake oil" devices but that doesn't mean that every device is a scam. The possibility exists that some might actually make a difference. We just have to rely on validatable testing so we can decide what is a scam and what will work.
Sapere aude!
Electric field isn't a myth.
It works and is routinely used in research to feed mass-spectrometers with samples from liquid origin (the experiments are called LC-MS : liquid chromatography coupled to mass spectromety, the electric field device is called an ESI : electrospray ionisation).
What makes it a snake oil, is that ESI works on electrically chargeable subtrates, at the point where the liquid is vaporized, i.e.: it is done by the tip of the needle that vaporize and inject some sample, consisting (for exemple) of proton-charged peptides (= positively charged).
It just *CAN'T PHYSICALLY WORK* inside a fuel line were the fuel is both under pressure and liquid (no vaporizing there, it's the injectors which do vaporize) AND where the fuel is neutral (diesel is just fat/oil. No charges thus no electric field could have an effect on it)
Ultrasonication as you propose, is the only process which could have an effect on an electrically neutral fuel. But as said by other /.ers, it should be at done at the injector's level, not inside the fuel line.
Disclaimer : I work in Proteomics (where LC-MS on peptide is a very common analysis method).
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