[Diy_efi] Re: Diy_efi digest, Vol 1 #322 - 11 msgs

[Bill Washington]

Lee,
    My first thought and probably easiest (note NOT easy but easiest) - 
Enclose the entire ignition and injection systems in a metal shield ( 
perhaps a combination of copper boxes and grounded fine copper mesh with 
largest gaps significantly smaller than (at least 1/10) the wavelength 
of the highest frequency to be protected against - IE the highest 
frequency which contains enough power to do damage) ie a Faraday shield.
This would have to include power leads, sense leads, ECU, control leads 
etc. joins and branches would be a challenge - perhaps plumbing copper 
'T' and 'Y' fittings could be used and perhaps that spiral flexible 
metal sheathing electrically bonded (soldered) to it. The sheathing 
would have to enclose also plug leads (including the plugs), and 
sensors, bonding to the engine block and head(s).
    I'd be very surprised if the military has not already addressed this 
issue, you may be able to get some information from them.
Some universities and other research establishments may have published 
some papers which may be available in the public domain. Finally some 
Government research from the 50's and 60's may now be available through 
the freedom of information acts.
    As I said initially - A challenge! - Good luck
Bill

>Message: 10
From: "Amanda Miller" <amillerrph at worldnet.att.net>
>To: <wilcutts at me.berkeley.edu>
>Date: Tue, 22 Oct 2002 22:14:07 -0400
>Subject: [Diy_efi] DIY-EFI References : EMP hardening
>Reply-To: diy_efi at diy-efi.org
>
>
>This is a multi-part message in MIME format.
>
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>hello!
>  I am looking for general information concerning 'hardening' a 2002 =
>Jeep and 1999 F-150  to protect ignition / efi and other systems from =
>electromagnetic pulse. . Kind of a strange project,I know. I am involved =
>in federal disaster response, and the subject of ensuring vehicle =
>operation after a disaster event is starting to be seriously looked at =
>in some circles. If you have time please e-mail any reference titles you =
>might encounter concerning protecting vehicle electronics from =
>electromagnetic pulse.
>    Thank you, Lee Miller     constable at att.net
>
>  
>



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