ION-related IGN Comments & Coil Quest

[Chris Rhodin]

------ =_NextPart_000_01BD8995.7A0544E0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

Aren't those wasted spark coils that GM uses 4-wire coils?  You would =
just use twice as many as GM and tie the other HV terminal to the =
ion-current bias generator (an 80v zener that can handle the peak spark =
current and a capacitor).

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. =20

Chris Rhodin
chris at notav8.com

----------
From: 	garfield at pilgrimhouse.com
Sent: 	Wednesday, May 27, 1998 16:05
To: 	DIY_EFI
Subject: 	ION-related IGN Comments & Coil Quest

Thas all fer now. Scan yer personal archives and see if you've ever seen
a "4-terminal" IGN coil. Any feedback appreciated.

Gar



------ =_NextPart_000_01BD8995.7A0544E0
Content-Type: application/ms-tnef
Content-Transfer-Encoding: base64
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------ =_NextPart_000_01BD8995.7A0544E0--