[DavidVizard-GFN]

Originally Posted by Brian P

Well, at a risk of speaking in someone else's place, if it were ME doing the testing, I'd find engine RPM and load settings that correspond to (say) 60, 80, and 100 km/h "road load" (i.e. part throttle), and measure BSFC at those operating points without the gizmo, then measure it again with the gizmo, then measure it again without the gizmo. If you really have sophisticated testing apparatus then you could use one or more of EPA's prescribed driving cycles on a dyno. But, that's just me.

A while back, on another website, we had someone touting an economy gizmo of some sort (I've forgotten what it was). That one got to the point of showing up at a dyno testing facility and the promoter got a chance to talk to everyone involved - none of the rest of us were about to stand up for any BS. There were some dyno equipment problems when the test was first attempted and we had to book it for another date. At that date ... no show.

I've also witnessed the tail end of a private dyno operator doing a test of an economy gizmo - but the methodology used was not valid. In that case, the dyno operator was (in effect) showing the promoter of the gizmo what he wanted to see, presumably in the interest of getting paid. "Independent test results" - Ya right.

I have my own opinion of those "HHO" or "Brown's gas" or other such systems. I'm thinking DV isn't going to get a response to his offer ...

Brian,

We seem to have had similar experiences but it would be nice if these hydrogen generation guys could show some results. i for one would be happy to save fuel.

As you can see I have had a response so let us see where this all goes. Mean while watch out for our Econmy Forum - its only days away now.
DV