ION-related IGN Comments & Coil Quest

[Clare Snyder]

garfield at pilgrimhouse.com wrote:
> 
> On Wed, 27 May 1998 17:32:51 -0700, Chris Rhodin <chris at imageio.com>
> wrote:
> 
> >I think the hardest problem to solve for the ION sensor is going to be
> >overcoming the high-voltage nature of all the components in the system.
> >By this I mean everything is designed to work with several thousand volts
> >applied, so nobody making parts (wires, plugs, connectors) really cares if
> >there is a connection at 80 volts.  There are even sparkplugs out there
> >that have an intentional gap in the body.  And even if you get everything
> >installed and working  you still will be adding a failure mode to the system
> >(if a small gap opens you still get a spark but no ION current will flow).  I'm
> >certain this is why Saab uses those cute coils that connect right to the plug.
> 
> Certain, eh? Lucky you.
> 
> I can't believe the number of gainsayers in this group. Not particularly
> tryna get on your case, Chris. Compared to some comments I've received
> both publically and privately, your FUD remarks seem sage in comparison.
> You'd think I've transgressed some inner-sanctum boundary to suggest
> some of this seemingly "hi-tech" stuff could be done by us mere
> "mortals". Yet, in contrast, all kinds of snake-oil shit passes thru
> here TOTALLY unopposed. I don't get it.
> 
> I know it's about 3 times the size of my XAviation group, but still,
> proportionately I've never taken so much shit and sour grapes from such
> a bunch of otherwise supposedly intrepid wrench-monkeys. Geez Louise.
> All I can say is the lot of you gloomNdoomers would NEVER make it in our
> eXperimental Aviation group. The last guy that pissedNmoaned like this
> was drummed out over a year ago. Sheesh.
> 
> Now, look. If you've followed the thread sufficiently to evoke these
> thots of "will it ever work?", you'll be able (I hope) to answer the
> following question: "What will be the indication that you have ANY 'gap'
> in the HV circuit of an ION'eyes'd setup, that wouldn't conduct
> 80-400V?"
> 
> Can you answer that? Can anyone? I'll be waiting to see if it's worth my
> while to continue on this.

Gee, it would be too bad if the only answer he got was from a fellow
eXav guy!
If there is a gap in the system that is NOT ionized, there will be no
current flow at 80 volts. If it is ionized, I would suspect it would
significantly affect the current flow, as the gap would be in air only.
With no fuel, no carbon, etc, the ionization voltage would just about
HAVE to be different, and the current along with it.
> 
> I'll even give the serious-minded a hint/reinforcement. HOW is misfire
> detected?
> 
> Lemme see that at least SOME of you are following this, eh? Otherwise,
> I'm about to bid the lot of yous bozos sayonara, and go back to my FlyIn
> Cafe, where the company is a little more "eXperimental".
> 
> Gar

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