Treser-Upside down CIS

[Phil Payne]

> Phil, if what you describe is right, how did the car run??  If the airflow
> plate is not moving inside the cone, it has no ability to control fueling
> except for idle, once the plate lifts, it will be in open space.

Yup.

It idled and drove at low throttle settings just fine.  Anything more than
that produced a cyclic over enrichment - frequency about 0.75 Hz. For all
practical purposes it was undriveable.

With the absence of the cone function - which I'm used to considering pretty
critical in CIS for matching airflow to fuel, I just couldn't see any
mechanism for providing the parallel curve response.

--
  Phil Payne
  http://www.isham-research.com
  +44 7785 302 803