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To clarify, here is an excerpt from the
EC3 manual:
"CLOSED LOOP MODES OF OPERATION.
NOTE! As of 9-12-2012 the EC3 includes a BETA version of the
software that enables 2 closed loop modes as described below. DO
NOT enable them in flight until you are certain they are working
properly on the ground. You should also follow the instructions
for setting up Mode 3 and 1 BEFORE trying these Closed Loop modes
of operation.
Before attempting operation in Closed loop mode, Make sure you
have selected the type of O2 sensor you are using for either
Narrow Band or Wideband sensors. See Mode 5 instructions for
details on doing this.
There are two closed loop modes. When Mode 1 is selected with
Cold Start switch ON the controller monitors the mixture and trims
the injection to keep mixture close to the mixture point
programmed in Mode 0A as long as the basic programming is within
trim range which is pretty wide. If this mode is working
properly you should see the EC3 bring the mixture back to the set
point after making a manual mixture control adjustment that would
normally take it out of range. If you can't verify this, do not
try the auto program mode of closed loop (Mode 3)
The target for the closed loop modes is set in Mode 0A, engine
running, Mode 0 selected and cold start switch off. With the
engine running and warmed up, adjust the mixture control to the
desired operating point by observing the mixture monitor. If the
monitor isn't working for any reason don't try to set this until
it is. When at the desired mixture, press the Store button. The
mixture target should now be set.
The other closed loop mode (Mode 3 selected with Cold Start
switch ON) is the auto programming mode that adjusts the MAP
table. It works the same way but uses a narrow trim range and
updates the map table if necessary to keep the mixture near the
mixture point programmed in Mode 0A . Since the loop is all
internal to the EC3 it happens faster than the EM2/3 auto program
mode in earlier versions and of course does not require the EM2/3
to work. Should eliminate a lot of tuning headaches for some
builders. Manual programming Modes 1 & 3 operate as described
later in this manual with Cold Start switch off".
Looks like for the stand-alone EC3 auto tune it must have the
Closed-loop option.
Does you EC2 have that?
Finn
On 6/4/2020 1:58 PM, Todd Bartrim bartrim@gmail.com wrote:
I also have the EC2 & EM2 with the autotune. It
does work, but it only makes changes to the map table at the
address that you are currently on due to your throttle position.
Moving your throttle position to other addresses will result in
gaps where it is hard to hit each address using the auto tune.
At this point though you should have a decent base line to work
with and you can just manually go through the table to make
adjustments as it will be obvious which ones need to be
adjusted. Then repeat as required.
But as Andrew pointed out it uses a narrow-band O2 sensor,
so it is not great. I have a PLX wide-band O2 sensor that also
has a narrow-band output that feeds the input to the EM2. I
can't say for sure but it did seem to give a more responsive
signal to the EM2, which improved the auto tune. But as it
also gives a very accurate and responsive wide-band output to
it's own display, which is essential for fine tuning manually.
I have 2007 EC2, EM2 has autotune feature, I
just found it quicker to tune manually as its setup for
narrowband o2 sensor, but used wideband.
Andrew
I doubt there's auto
tune in the EC2, but what do I know?
OK, looked in EC2 source code, last comment ;10-09-05
(Oct 2005), so I
doubt it.
There's also source code for EC2F, what ever that is.
Latest comment
there is ;03-16-12
No mention of auto tune in either.
I could be wrong.
Finn
On 6/4/2020 9:01 AM, Stephen Izett stephen.izett@gmail.com
wrote:
> Hi Finn & all
>
> Can anyone using an EC2 confirm if the Autotune
functions works for them?
> Not the autotune built into the EM3 engine monitor,
the EC2 version.
>
> Thanks
>
> Steve Izett
>
>> On 2 Jun 2020, at 10:10 pm, Stephen Izett stephen.izett@gmail.com
<flyrotary@lancaironline.net>
wrote:
>>
>> Hi Finn
>>
>> Thanks for the updated EC3 doc. I had an older
version.
>>
>> Steve
>>
>>> On 2 Jun 2020, at 9:28 am, Finn Lassen finn.lassen@verizon.net
<flyrotary@lancaironline.net>
wrote:
>>>
>>> Yes, after putting the EC3 into injector
test mode and checking that each is clicking
(screwdriver as stethoscope) and into ignition test mode
and see that all four plugs are firing, that would be my
next step.
>>>
>>> You say you've already checked that the
wiring to coils and injectors are correct:
>>> J2-3 Prim Inj 1
>>> J2-4 Sec Inj 1
>>> ...
>>> J2-10 Trail Coil 1
>>> ...
>>>
>>> I continuously surprised myself on how
often I'd wired something wrong, in spite of trying to
be very careful about getting it right. I wasn't kidding
about Murphy working overtime.
>>> It's easy to get the pin numbering wrong on
the connectors.
>>>
>>> If I were getting desperate, I would remove
(one at a time) the connectors on the injectors and
coils and check continuity from J2 pin to the connector
pin.
>>> (You know that the power side are correct
because works with EC2)
>>> Finn
>>> Got the copper washers in the mail today,
but think I'll wait for these:
>>> https://www.ebay.com/itm/293592023854
>>>
>>> On 6/1/2020 7:30 PM, Stephen Izett stephen.izett@gmail.com
wrote:
>>>> Thanks Finn.
>>>>
>>>> I had a chance to unpack the dump last
night and conquer with your reflection.
>>>> I’m in the dark re the EC3. Checked
wiring twice now.
>>>> I must put a cro on the injectors and
coils to confirm they are triggering correctly.
>>>>
>>>> Steve
>>>>
>>>>> On 1 Jun 2020, at 9:59 pm, Finn
Lassen finn.lassen@verizon.net
<flyrotary@lancaironline.net>
wrote:
>>>>>
>>>>> Program Mode 5 (Reset function)
>>>>>
>>>>> As of 01-25-13 the EC3 can be used
with either the common narrowband O2 sensors or the more
advanced wideband sensor systems. Be sure to verify
that your wideband sensor outputs in the range of 0 - +5
volts if using a wideband type. To select the type in
use, use the power up program mode method below:
>>>>>
>>>>> To select the O2 sensor type ,
perform the following steps:
>>>>>
>>>>> 1. Turn the EC3 power off.
>>>>> 2. Select mode 5 with the Mode
Select switch
>>>>> 3. Select the O2 sensor type using
the Cold Start switch: Up = Wideband, Down = Narrowband
>>>>> 4. Press and hold the Program
Store switch.
>>>>> 5. While holding down the Program
Store switch, turn on the power switch to the EC3.
>>>>> 6. Keep holding the Program Store
switch for about 1 second, and then release it.
>>>>> 7. Return the Mode Select switch
to 0.
>>>>> 8. Power the EC3 off. When the
EC3 is powered up again it will be set for the O2 sensor
type selected.
>>>>>
>>>>> Uploaded doc to:
>>>>> https://drive.google.com/drive/folders/1mVzPOxUwcGUlPizxnRF40nUyKBzfT4DC?usp=sharing
>>>>>
>>>>> PDF version still states that B is
automatically programmed when A is programmed. Not true.
Use the Word doc.
>>>>>
>>>>> Finn
>>>>>
>>>>>
>>>>> On 6/1/2020 9:16 AM, Stephen Izett
stephen.izett@gmail.com
wrote:
>>>>>> Hi Finn
>>>>>>
>>>>>> How does the mode 5 O2 sensor
change work.
>>>>>> Ive not found this in the EC3
documentation.
>>>>>>
>>>>>> Steve
>>>>>>
>>>>>>> On 31 May 2020, at 4:08 am,
Stephen Izett stephen.izett@gmail.com
<flyrotary@lancaironline.net>
wrote:
>>>>>>>
>>>>>>> Hi Finn
>>>>>>>
>>>>>>> Thats good news.
>>>>>>> At some point I’ll plug the
EC3 in and see what the EM3 reports.
>>>>>>>
>>>>>>> We’re finally back in the
air and testing again after the last 3 months of
responding to COVID here in Perth.
>>>>>>>
>>>>>>> Last mods included some
reshaping of inlets and diffusers and tidying up the
inlet manifold (grinding smooth some weld that had
penetrated into the runners).
>>>>>>>
>>>>>>> Yesterday our Renesis 4
port max fuel flow is up 10% to I think a reasonably
accurate 18 gal/hr at 7100rpm, 29.5 inch of MAP and
mixture at best power.
>>>>>>> We burn our Australian
Premium Unleaded with no Ethanol which I believe is 6.26
lb/gal so I’m thinking thats around 190hp.
>>>>>>>
>>>>>>> Cheers
>>>>>>>
>>>>>>> Steve
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> On 31 May 2020, at
12:58 am, Finn Lassen finn.lassen@verizon.net
<flyrotary@lancaironline.net>
wrote:
>>>>>>>>
>>>>>>>> Wrong engine code
solved!
>>>>>>>>
>>>>>>>> I looked at the dates
of files in the EC3CL folder. These files were not
updated to the date I programmed the EC3:
>>>>>>>> ECCL8.cof
>>>>>>>> ECCL8.map
>>>>>>>> ECCL8.O
>>>>>>>>
>>>>>>>>
<mcppihngfoiehjon.png>
>>>>>>>>
>>>>>>>> So I started from
scratch:
>>>>>>>>
>>>>>>>> Unzipped the EC3CL
folder.
>>>>>>>>
>>>>>>>> Set ENG = A8; LS2COIL,
LGSEC and WIDEBAND to 1 and rest to 0.
>>>>>>>>
>>>>>>>> Did "Erase", "Clean"
and "Build All" and "Program" in MPLAB and reinstalled
chip for controller A.
>>>>>>>>
>>>>>>>> Now EM3 correctly shows
"A8" for engine code.
>>>>>>>>
>>>>>>>> Changed to narrow band
using mode 5, and EM3 display correctly changed from 16
to 12 for ENGINFO.
>>>>>>>>
>>>>>>>> I must have chosen the
"Make" option in MPLAB when I first programmed the
chips, I guess.
>>>>>>>>
>>>>>>>> Unfortunately I must
have damaged the controller B CPU chip when handling it
(MPLAB reports device ID = 0) and will have to order a
new one.
>>>>>>>>
>>>>>>>> Finn
>>>>>>>>
>>>>>>>> Still waiting for the
$1.79 shipped copper washers to arrive in mail. Maybe I
should bite the bullet and order five (six) Stat-O-Seal
washer/O-rings at $8.56 per pack of two. $25.68 total :(
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Regards
Andrew Martin
Martin Ag
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