Paul,

I have a thought on a more advanced Engine Controller for the Rotary.

I would like the engine to be able to adjust automatically to changes
in operating conditions. In the current EC3 setup, MAP is used to
control the proper amount of fuel, and it takes a lot of calibration
before a conversion is done properly.

Now what if we can monitor a MAF sensor? If we know the air mass at
any given time, together with rpm and displacement, we can calculate
how much fuel to squirt into the engine. Since Air mass changes with
altitude, the engine can automatically reduce fuel consumption
accordingly.

To make programs simple, I propose a push button to fine tune the
leaning process. I assume that on the climb, we can let the engine run
a little rich, so we can settle for a simple loop similar to an open
loop mode in the cars, but once we are at our cruising altitude, we
can push a button, and my monitoring CHT and EGT, we can program the
EC to do an automatic cycle to find the best lean point.

On descend, we can either automatically take the best lean mode out
and get into open loop mode by monitoring the MAF, (Air becomes dense,
while rpm is constant and volume of air is constant). Alternatively,
we can add one more button to manually get into open loop mode.

Henry Nee


Sounds great Henry. What are you going to write it in?
I would like to see ASM as there is a one to one between what you tell it to do and what it does. Also you can control time down to the nano second. Perhaps you have someone over there that can do it in ASM
and comment it in English. I can help with the cost up to a few hundred. If it is done in high level language perhaps the comments can be correlated with the ASM listing.

BTW are you back in China? Ed wants to buy some ceramic bearings for our new PSRU's

We have your Chinese address unless it got lost in the last computer glitch. I am now using Ubun 10.04 and I like it better than Fedora 7 but there is still room for improvement. It keeps bugging me on the bug fixes. Shall I do it? I have the second hard disk working so I will back up everything first.

Paul Lamar