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Jet engine mufflers?

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Old 11-22-2003, 02:39 PM
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johnny928
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Default Jet engine mufflers?

I read this clip in my local newspaper about this new type of muffler that is out. Her eis what the news clip says:

Using principles of jet engine technology, the Aeroturbine muffler reportedly creates a pressure vacuum that accelerates airflow out of the tailpipe. The company claims that the increased airflow will result in noticable gains with performance and fuel economy. The product will be featured on speedvisions Two Guys Garage in january of next year. Aeroturbine is available for most vehicles, starting price is $192 US. Get additional info at www.aeroturbine.com


Let me know what you guys think of this. Check out the website for more info.

Jonathan
Old 11-22-2003, 03:18 PM
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PorKen
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johnny928 - I think this is the link you meant...

Aeroturbine performance mufflers
Old 11-22-2003, 03:27 PM
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sweanders
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Snake oil?
Old 11-22-2003, 04:45 PM
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Would be interesting to see independant testing results.
Old 11-22-2003, 04:45 PM
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Gregg K
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Unless they are actively doing something, like injecting gas, with the muffler, the basic thermodynamics is- energy in equals energy out. I know I'm rusty on my thermo, but I don't see any capability to add acceleration to the vehicle. And the fuel that's burned in the engine is already burned. They can't reverse or change the efficiency of the engine. The mass flow in equals the mass flow out, and they may increase the velocity of the flow out, but it's energy is the same as the original exhaust pipe flow. I say it's hogwash.
Old 11-22-2003, 04:55 PM
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jayc67
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Guess that would be the reverse of a supercharger? Suck the exhaust out with force?

Suckcharger? Hogwash seems like a really good term for this.....
Old 11-22-2003, 05:08 PM
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ErnestSw
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The muffler uses a Bimodal Linear Supercharge Heated Turbine effect to increase the velocity of the exhaust gasses. This is known in scientific circles as the BLSHT effect.
Old 11-22-2003, 05:14 PM
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Tony
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Ok..so what drives this "turbine" so it can draw the gasses out?
Uh...exhaust perhaps?
I bet its more of a restriction than anything.

I need to come up with somehting stooooooopid so i can make millions as well.




Old 11-22-2003, 05:15 PM
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You never know. There are some really amazing things coming out of late. (For instance) Until we see some indepentant testing though, I too have reservations.
Old 11-22-2003, 05:17 PM
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TAREK
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There is more "jet engine technology" in eating beans than in this exhaust.

These people are frauds. My Thermo is rusty too, but it seems to me that this exhaust is essentially a nozzle and embedded resonator (two distinct air velocities) design, that increases partial air velocity, but also restricts the flowing mass (compared to other aftermarket exhausts). Basically the Flow remains the same before and after the rear muffler, with varying velocity and volume of air. In fact there is reason to believe this might be more restrictive.

As Gregg mentioned, unless fuel is injected in that exhaust and combustion is taking place, no force is generating, with a resulting forward motion.

as usual, I could be wrong
Old 11-22-2003, 05:30 PM
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ErnestSw
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The BLSHT effect gives a net increase in thermodynamic efficiency without any input of energy. It has been the scientific basis of many revolutionary discoveries in engine efficiency over the last 100 years.
Old 11-22-2003, 05:51 PM
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Gregg K
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Ernest,
To hell with Bernoulli's principal. This is what they call "polishing a turd".
Old 11-22-2003, 06:19 PM
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ErnestSw
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Gregg,
Bernoulli was a pessimist!
Old 11-23-2003, 01:10 AM
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SteveG
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Default Bernoulli Was a Pessimist

Ernest: Is that physicist humour? Are you referring to his theories or just his general life view. That's funny.

Referring to the muffler. what they forgot to tell you is you need this add-on for sale on ebay. http://cgi.ebay.com/ebaymotors/ws/eB...tem=2443841550
Old 11-23-2003, 01:22 AM
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ViribusUnits
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Ernest, plese point me in a diriction that might add additional information.

It's hard to say your wrong, but it's also hard to say your right.

I find this thingie difficult to belive, but then again, hum...

My Thermo is not rusty. Nor is my fluids.

Bernoulli wasn't a pessimist, he was an idealist... Only soved for ideal situations...

It is theoreticaly possible to "suck" energy from an exauste, in the form of heat, and then use it to pull a vacuume on the exauste. Theoreticaly possbile doesn't mean actualy possible. There would be losses to the turbine, the involed heat exchangers, and such. Almost certanly enough to make it to where it's not worth the effort. That being said, a device that recovers energy from the exauste, or cooling system has been a pipe dream of mechenical engineers for about as long as the internal combustion engine has existed. I rember a desile/steam turbine engine that was popular for IIRC, railroad switching engines, in the fuel crunch. It worked, and worked well, but was to expensive to continue when the price of desile came down again. I'm away from my books now, so I can't find the exact same of the unit right now.

As for this Aeroturbine muffler thing. It doesn't work like it says. It apperes to be a simple, freer flowing than stock muffler, with a unique sound. I'm willing to bet you could get similer results from most any proformance muffler. Thats why they're called proformance mufflers...

You know what I just noticed Ernest, BLSHT is awful similer to an avbreviation to Bull ****. You post two posts up leads me to belive that this is where you're headed. I've never heard of such, and I've at least heard of most of the great improvments in engine technology in the last 100 years. Also, I have trouble finding Bimodal Linear Supercharge Heated Turbine anywere in a google search. You wouldn't be trying to pull a fast one would you? ;-)


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