home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky rec.autos.tech:11818 rec.autos:20887
- Path: sparky!uunet!gatech!purdue!mentor.cc.purdue.edu!noose.ecn.purdue.edu!sparkyfs.erg.sri.com!rat
- From: rat@erg.sri.com (Ray Trent)
- Newsgroups: rec.autos.tech,rec.autos
- Subject: Re: Fuel Separator
- Message-ID: <1992Aug27.211206.14343@erg.sri.com>
- Date: 27 Aug 92 21:12:06 GMT
- References: <1992Aug27.000428.3252@csis.dit.csiro.au>
- Sender: news@erg.sri.com
- Reply-To: rat@erg.sri.com (Ray Trent)
- Organization: SRI International, Menlo Park, CA
- Lines: 47
-
- In an article, gavin@aquila.csis.dit.csiro.au (Gavin Walker) writes:
- >The device fits inbetween the carburettor and the inlet manifold. Supposedly
- >it uses electromagnetic forces to break the fuel droplets down to an average
- >size of 3 mircons. That constrasts with 10 microns for the Orbital Engine
- >and around 100(?) microns for fuel injection systems. This then leads to
- >better combustion. Current tests indicate 40% emissions reduction, 40%
- >less fuel consumption and about 1% loss of maximum power.
- >
- >The inventor is currently testing it on his 2.6l 4cyl Mitsubishi Magna (Sigma)
- >and claims 50% less fuel consumption.
-
- Well, let's look at this claim objectively, shall we?
-
- If nothing else...:
-
- Fuel is typically mixed with air at a ratio of 1/14 by mass. Current
- regulations (in the US) require that unburnt hydrocarbons be something
- like <500ppm in the exhaust (that's very conservative...I seem to
- remember something like 80ppm, but I can't find a reference). This
- would seem to me to indicate that at least 99.3% of the fuel has been
- burnt somewhere in the system in most normal cars.
-
- Admittedly, it is quite possible that a fair amount of that burns
- outside of the cylinders or during times when power is not effectively
- transmitted to the ground.
-
- But 40%? Do you honestly think that *any* car company would fail snap
- up this "discovery" and use it on their vehicles in an instant if it
- really improved fuel consumption by 40%? Car companies are under
- severe pressure from CAFE (fuel economy) regulations. They would hire
- someone to *kill* this guy and *steal* the invention, if they had to,
- if it actually worked that well. They spend literally hundreds of
- millions of dollars a year just to squeeze out an extra 5% in fuel
- efficiency.
-
- Not to mention the fact that they are also under severe pollution
- restrictions. They'd pay millions just for the emissions improvements
- alone.
-
- While there is a (microscopically small) chance that this guy is
- right, I wouldn't bet on it any time soon without seeing hard,
- referreed evidence.
- --
- "When you're down, it's a long way up
- When you're up, it's a long way down
- It's all the same thing
- And it's no new tale to tell" ../ray\..
-