Extra Fueler

[Cliff Tindall]

Hi.
I have a small timer circuit that I have built that I have used to control an
extra injector, under full load situations, in a modified engine (for off road
racing)using the existing injector pulse to trigger the unit, and switches for
full load etc. This works well in its current application.
However I have someone who would like a unit to fit to their Turbo LPG
(propane)to come on only at boost. This is no problem to do with a pressure
switch, but the problem now is what to trigger the unit from. 
What I want to do is use the coil - signal. To pulse at the same rate as
before I now need a divide by 3 circuit. So the unit will pulse once per
engine revolution.
My first thoughts were to use CMOS flip flops, but as I have seen from some of
the posts on DIY_EFI I may be doing work that has previously been done.
Any suggestions are welcome.

Cliff Tindall
Perth, Western Australia


--

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
    Onramp BBS - Perth, Australia               http://www.onramp.com.au/
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-