Additional Injector Controller

[Joseph Obernberger]

Hi,
    Check out national semicondutor's LM1949 chip.  Basically,
you give it a duty cycle signal (5 volt amplitude) and it controls
the injector.  To do this, I think, the best way would be to use
some sort of PIC or microcontroller to read RPM, boost, and
some potentiometers to set up parameters (when to come on,
and how much to increase etc..).  Probably best to have the
injector fire based on the RPM signal - since you might want to fire
the injector when the intake valves are open.
Hope that helps.
                                                        joeo


Ian Habicher wrote:

>
>
> I'd like to try rolling my own instead of buying a prefab unit.
>
> Thanks,
>
> Ian
> 87 RX-7 T2
>

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org