Flow Bench?

[steve ravet]

Garfield wrote:
> 
> Anyone ever seen a set of plans/instructions for building a small flow
> bench? I mean, how/where to make/buy the slant manometers and blowers,
> etc., and a working design.
> 
> Appreciate any response.
> 
> Garfield
> 
> P.S.  I also read somewhere that decades ago, there was a 1969 article
> in Hot Rod Mag. for such a homebuilt, but don't know the month.

I guess I could have answered the question.  An injector flow bench is
pretty simple.  A fuel pump, pressure regulator, injector under test,
and a calibrated recepticle to measure fluid with.  Also a circuit to
open and close the injetor with a variable duty cycle.  You can make it
as fancy as you want, by adding a flow meter, variable pressure
regulator, variable voltage supply to fuel injector, a scope to view the
waveform at the injector, and a knock sensor to indicates when the
injector actually opens and closes.  You can also add a computer to vary
the on time of the injector and automatically make measurements. 
Finally, you can add a strobe light to view injector spray patterns. 
Simple as that!

--steve


--
Steve Ravet
International Meta Systems
http://www.imes.com
steve at imes.com