Originally Posted by
Raleighcopter
to do that would require a rewrite of the controller code and i'd need to monitor the ignition pulse from teh RPM output and then calculate how long to wait until the engine is at the intake stroke before opening the solenoid for the proper duration. yeah, that's a fairly big change. what about changing to a 50 or 60 hz carrier frequency? a higher carrier makes the solenoid behave more like a modulating valve rather than a 2 position valve but that would probably have detrimantal effect on atomization at the spray bar.
To be honest: I don't know what direction to take... This is really completely different than anything else out there. Imagine this: The carb is taken from a .06 cu.in engine. That is tiny.
This engine (the fourstroke, not the donor engine) runs with throttle openings so small that that .06 would not even consider turning over, let alone run...
I have no idea about air velocities, intake manifold pressures and what not. Looking at fuel consumptions in the order of magnitude of 20 ml per hour (2/3rd of an oz).
I am like a blind man, feeling my way around here, and no idea what does, and does not work.
I have allready reworked the camshaft, because valve timing intended for 10K does not function very well at 1,5K. So I reground camprofiles such that valves open and close as near to their respective dead centers as I could get it. It makes the valve train a bit noisy, but because of the very low speeds, I do not think there will be an issue with that.