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Author Topic: Question about flyback to devices connected to INJGroup  (Read 21644 times)

Offline GintsK

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Re: Question about flyback to devices connected to INJGroup
« Reply #15 on: January 31, 2011, 09:25:37 pm »
Using diodes for 3-pin IAC is not mistake. But it works without.
For 2-pin diode is a must.

In your last schematics is bit unclear where is connection points for supply wire. But it looks good to me.
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Offline ZoLtaR

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Re: Question about flyback to devices connected to INJGroup
« Reply #16 on: January 31, 2011, 10:42:32 pm »
Ok thanks. Look at this.
Every element is powered by one +12v line with one fuse. 30V flyback is also fused in the same place.
I also added two 1N4001 diodes for IAC between (open-12v and close-12v) wires. Is it 100% ok now, and can I make a loom with such a schema?

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Offline z0tya

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Re: Question about flyback to devices connected to INJGroup
« Reply #17 on: February 01, 2011, 07:54:09 am »
So if I use v3 harness, where injectors has separated fuse (I am using one of the 7.5 fuse for iac and boost solenoid), then I need flyback diode both of two?
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Offline rob@vems.co.uk

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Re: Question about flyback to devices connected to INJGroup
« Reply #18 on: February 01, 2011, 09:54:49 am »
The flyback in that pic is on the WRONG ;) side of the fuse, if the fuse blows the flyback will be isolated.
Put the flyback line on the battery side of the fuse, and connect your other flyback diodes to it.
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Offline GintsK

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Re: Question about flyback to devices connected to INJGroup
« Reply #19 on: February 01, 2011, 07:42:16 pm »
Quote from: rob@vems.co.uk on February 01, 2011, 09:54:49 am
The flyback in that pic is on the WRONG ;) side of the fuse, if the fuse blows the flyback will be isolated.
Put the flyback line on the battery side of the fuse, and connect your other flyback diodes to it.
I fuse blows all other elements are also isolated. So no danger for FETs. Right?
BTW same schematics as here http://www.vems.hu/wiki/index.php?page=MembersPage%2FPhatBob%2FUserGuide
If we search for flyback there we get this picture:

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Offline ZoLtaR

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Re: Question about flyback to devices connected to INJGroup
« Reply #20 on: February 01, 2011, 08:04:00 pm »
Damn, it's one big mess.  ??? PhatBob manual on the wiki says something completely different that you are saying guys. In PhatBob manual there is flyback after the fuse, and separated fuse for injectors, separeted for the rest of INJOut devices. Someone should do with this order so as not to put people in confusion.  :-\

So how to connect it finally? rob and Gints says something different each other.
So, version 1) Gints advice  ;)



or version 2) Rob advice  ;)



In my opinion both versions will be fine.
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Offline rob@vems.co.uk

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Re: Question about flyback to devices connected to INJGroup
« Reply #21 on: February 01, 2011, 10:30:59 pm »
I've confused myself now, and I wrote the PhatBob manual.
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Offline ZoLtaR

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Re: Question about flyback to devices connected to INJGroup
« Reply #22 on: February 02, 2011, 06:53:16 pm »
So what is the final solution? I guess both versions are fine?
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