[Gmecm] Injector Impedences and other Q's (was '747 multiport)

[WopOnTour]

The injector resistance specification for the GENIII V8s is 13 ohm +/- 1 
(saturated switch driver)
HTH
WOT
----- Original Message ----- 
From: "Steve Ravet" <Steve.Ravet at arm.com>
To: <gmecm at diy-efi.org>
Sent: Wednesday, April 27, 2005 9:27 PM
Subject: RE: [Gmecm] Injector Impedences and other Q's (was '747 multiport)


[yes, I'm behind on reading EFI email]

>
> Michael,
> Yes, but..
> TBI Injectors are low impedance saturated coil
> devices.  TPI Injectors are high impedance
> non-saturated devices.  That means they like a
> modulated current source (Peak & hold).  TBI Current

This is backwards.  TBI injectors are low impedance, high current
devices.  High enough current that if it's not limited they'll melt.
TBI injectors require peak/hold drivers.

Port injectors are generally high impedance, and limit their own
current.  They only need an on/off driver.

> > Also, are the TPI/Lt1/Lt4 injectors high impedence?

yes

> > What about the
> > Gen-III V8 injectors?

don't know.

--steve


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