Additional Injector Controller

[steve ravet]

There should be lots of app notes and data sheets for the 555 on
national semiconductors WWW page.  You can set up a circuit where a
variable voltage controls the duty cycle output.  synchronizing it to
another injector might be more complicated.  While you're there look for
op amp notes also, between the two you should be able to get what you
want.

--steve

Ian Habicher wrote:
> Hehehe sounds easy unless you have no clue how to do it.  To me a simple
> analog controller would be enough, doesn't have to be fancy or
> 'programmable', I've heard that it can be done with a 555 or other chip set
> up to provide a variable duty cycle based on boost sensor (MAP) voltage.
> Reading and factoring in RPM isn't important, the injector just fires once
> every half-revolution, based on the stock injector signal, and the pulse
> width is determined by MAP sensor.


-- 
Steve Ravet
steve.ravet at arm.com
ARM,Inc.
www.arm.com
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