[Diy_efi] Link for greenfire spark plugs...

[dh at busb.com]

Diffusion is a process that takes place in seconds to years at these
temperatures and pressures.

Combustion is a process that takes place in milliseconds to microseconds.

> The claims do appear to be exaggerated and can only
> be investigated properly with a full disclosure of the
> methodology and the classic paradigm of repeatability
> and especially so where unbiased and wholly disparate
> researchers share correct technical definitions ;-)

Wow, I couldn't have said it better.  In fact, my response would have
probably been mono-syllabic.  To paraphrase the previous paragraph. Show me.

dh

----- Original Message ----- 
From: "Mike" <niche at iinet.net.au>
To: <diy_efi at diy-efi.org>
Sent: Thursday, June 09, 2005 2:43 AM
Subject: Re: [Diy_efi] Link for greenfire spark plugs...


> At 12:40 AM 9/06/05, you wrote:
> >--- Mike <niche at iinet.net.au> wrote:
> >
> >> Correct me if I'm wrong but wouldn't the charge get
> >> there by virtue of the piston rising and pushing it
> >> in on each stroke ?
> >
> >If there was a hole in the "prechamber" with
> >atmospheric pressure behind it, sure.  Since there's
> >not, the "prechamber" sees the same pressure as the
> >rest of the combustion chamber.  The only entry path
> >is through diffusion, as near as I can tell from their
> >few pictures.
>
> <cough> Think you are using the term 'diffusion' wrongly :(
>
> ie. The piston pushes the mixture up into the plug due
> to pressure difference - therefore there is flow and that will
> be the case until the pressure is equalised.
>
> Then if the pressures are equal - then and *only then* is it
> correct to call the path "diffusion"... !
>
> Although you may interpret the small flow through the
> holes as "diffusion" it isnt technically correct at all to call
> it that - the pressure in that region of the plug is not static,
> therefore there is flow.
>
> >In fact, I can't quite see how it would function at
> >all, assuming their description and patent
> >application's diagram are correct.  Simple
> >stratified-charge engines (of a similar design to what
> >they claim for this plug) operate by injecting fuel
> >into the prechamber directly; here; the prechamber has
> >limited contact with the "outside world", and only
> >what diffuses in through the holes will be inside the
> >"prechamber"; by all indications, this would be a
> >fairly lean mixture, well diluted with exhaust gases
> >from the previous combustion cycle.
>
> Its quite easy to see how you dont understand how it
> functions if you are attached to the notion of the only
> path being "diffusion" - clearly its not...
>
> I am also interested in independent test results and the
> full methodology so look forward to that from the inventor
> per my initial enquiry.
>
> The claims do appear to be exaggerated and can only
> be investigated properly with a full disclosure of the
> methodology and the classic paradigm of repeatability
> and especially so where unbiased and wholly disparate
> researchers share correct technical definitions ;-)
>
>
> >| 82 Honda CX500 Turbo (Cassandra)  90 Kwak Zephyr 550 (Daphne) |
> >| "It was like an emergency ward after a great catastrophe; it  |
> >|   didn't matter what race or class the victims belonged to.   |
> >|  They were all given the same miracle drug, which was coffee. |
> >|   The catastrophe in this case, of course, was that the sun   |
> >|     had come up again."                    -Kurt Vonnegut     |
> >| M/C Fuel Inj. Hndbk. @ Amazon.com -  http://tinyurl.com/6o3ze |
>
> Regards from
>
>
> Mike Massen
> Perth, Western Australia
> VL Commodore Fuse Rail that wont warp or melt !
> http://niche.iinet.net.au
>
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