John Ferrell wrote:

> On 6/15/2011 7:22 AM, alan.b.pearce@stfc.ac.uk wrote:
>
> > Some guy at Freescale has designed an aftermarket ECU for his 1970s Min=
i, that he has converted to fuel injection.
> >
> > May interest some of the petrol heads here.
> >
> >
> Very interesting.
>
> Most of the smaller engine problems that I encounter could be put off
> with better control of ignition & fuel parameters.
> So far I have never got past the thinking stage. The last nasty problem
> I fixed on a lawn tractor required replacing the carburetor. I believe
> there was just too much wear around the throttle shaft that caused a
> lean mixture. A closed feedback loop as implemented with an injector
> would have tuned around the problem.
>
> I think the economic factors of manufacturing, marketing and maintenance
> have made the small engine ECU a logical next step.

There are several ECU reference designs around including on freescale's
website. We produce tools for one of the main parts that are used in
most automotive implementations. Contact me off-line if you want more
details.

A ECU development project is not trivial even starting with a reference
design.  Most of the development I am seeing now is ECU for non
automotive applications. Light aircraft, garden tools, water craft  and
motorcycles. One of the more fun recent projects is
http://www.horex.com/index.php?L=3D1
They will admit to 185 Hp out of 1200CC's on two wheels.

Regards

--
Walter Banks
Byte Craft Limited
http://www.bytecraft.com
walter@bytecraft.com





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