View Single Post
Old 12-05-2009, 08:27 PM   #45
NASIOC Manufacturer
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
2004 Citroen Picasso


The reason for matching the characteristics of the two valves is just make life easier. Once matched you do not need to do any corrections to compensate the open/closing time, just boost the raw signal and your are done.

On the other hand, you use any un-matched valves you need to spend time to play with the electronics to match the flow (correction tables). Either way, there is no short cut if you want a system that mirrors the fuel flow with a reasonable accuracy.

This is of course not needed if you are going to make your own map as mentioned, a XY grid. But the drawback would be mapping time the dyno, everytime you alter the meth map, you need to alter the fuel map so that you can consistant octane/cooling balance. it will be time consuming.

We did look at all algorithm and decided to track IDC - not perfect but very simple to tune.

The valve can work 10Hz and it will be a smooth flow. The valve a quite large due to ther 1/8 BSP fittings on each side. We can intergate a nozzle on the lotlet side of the valve - if you like, I post a picture here. These FAV (fast acting valve) is quite new, I don't have the price yet - depends very much on your specifications. We haven't planned to sell this valve separately commercially. For occasional project as yours, there is no problem.

Sounded like something good is brewing...
* Registered users of the site do not see these ads.
Aquamist is offline   Reply With Quote