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cofford
Joined: 01 Jan 2018
Posts: 9
Location: Puget Sound, WA
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 Posted: Fri Feb 14, 2020 10:49 am Post subject: Always hot power for fuel injectors and ignition coils |
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Hi everyone,
I'm currently planning the electrical architecture for my RV-8 with EFII and I've been following the recent discussions of fuel injector power with great interest. Does anyone connect the positive side of the injectors and coils to the always-hot battery bus and leave them powered all the time, or are they generally always switched?
I'm leaning towards a dual-feed "engine bus" with diode-protected feeds from the main contactor and a relay on an aux battery, but leaving the injectors and coils "always hot" gives a few more options. I'll post a schematic when I get done drawing it.
Thanks,
Casey
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Robert Reed
Joined: 22 Oct 2009
Posts: 331
Location: Dallas/Ft.Worth
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| Posted: Mon Feb 17, 2020 6:38 am Post subject: Always hot power for fuel injectors and ignition coils |
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Not a minority of two either.
Bob Reed
Sent from my iPhone
| Quote: | On Feb 17, 2020, at 8:11 AM, user9253 <fransew(at)gmail.com> wrote:
Charlie, you are not a minority of one. I am on your side. The master switch
should shut off all electrical power except to the engine. The engine bus
should be supplied by two current paths. The pilot should have the ability to
shut off all sources of electrical power as close to the sources as possible.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=494858#494858
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foghorn757(at)gmail.com
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| Posted: Mon Feb 17, 2020 8:06 am Post subject: Always hot power for fuel injectors and ignition coils |
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I’m on board with this philosophy too.
Jeff Parker
| Quote: | On Feb 17, 2020, at 09:43, Robert Reed <robertr237(at)att.net> wrote:
Not a minority of two either.
Bob Reed
Sent from my iPhone
> On Feb 17, 2020, at 8:11 AM, user9253 <fransew(at)gmail.com> wrote:
>
>
>
> Charlie, you are not a minority of one. I am on your side. The master switch
> should shut off all electrical power except to the engine. The engine bus
> should be supplied by two current paths. The pilot should have the ability to
> shut off all sources of electrical power as close to the sources as possible.
>
> --------
> Joe Gores
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=494858#494858
>
>
>
>
>
>
>
>
>
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