Memory Locations.
RPM .......1K..2K..3K..4K..5K..6K..7K..8K
1 to 8.. 001 002 003 004 005 006 007 008 02 psi Near perfect VAC
8 to 16. 010 011 012 013 014 015 016 017 04 psi Low power. Idle
M 16 to 24 018 019 020 021 022 023 024 025 06 psi
24 to 32 026 027 028 029 030 031 032 033 08 psi
A 32 to 40 034 035 036 037 038 039 040 041 10 psi
40 to 48 042 043 044 045 046 047 048 049 12 psi
P 48 to 56 050 051 052 053 054 055 056 057 14 psi High power.
56 to 65 058 059 060 061 062 063 064 065 16 psi Atmos. WOT
These are pulse width numbers sent to the
pulse width generator. There are 64 different pulse widths.
They are adjusted up and down by you to suite your
particular engine and uploaded to each PicAXE
injector computer once. They can be changed at any time
in the future. They are also adjusted up
and down, depending on exact intake manifold temperature,
by the PicAXE software by merely adjusting the memory location.
If it is cold chose a higher location. If it is warm chose
a lower location.
This is called "trim" in EFI vernacular.
This is a small table 8 by 8. The table can be enlarged to get
a finer adjustment on the mixture depending on the amount
of PicAXE memory available.
-----------------------------------------------
WONDERS OF ALL WONDERS!!!! PicAXE BASIC has a single
command, count em, one only, uno, for looking up values in tables.
Here it is. I don't see how it can get any simpler than this
but is probably will as I get further into it :)
---------------------------------------------------------
Just when I thought it could not get any simpler it got
simpler :) This Increment (INC) command and the code snippet that goes
along with it encompasses almost the entire back ground
loop counter used as the RPM indicator.
BTW If you start with a large number and decrement (DEC) it the size
of the number will be directly proportional to RPM instead of
being inverse. Low RPM lots of DEC's low number. High RPM fewer
DEC's high number.
Who needs math if you have hardware interrupts and counters? :)
I am going to take my afternoon nap now and I expect some
questions when I wake up :)
Paul Lamar ...No rotor no motor.
The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site.
http://www.rotaryeng.net
Copyright 1998-2007 All world wide rights reserved.