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averaging some engine data (Read 962 times)
Oct 11th, 2017 at 12:24pm

sstearns2   Offline
Frequent Poster

Camarillo, CA

Posts: 47

It would be great to add the option of a few second average on displayed fuel flow and CHT data.   My fuel flow wanders by a few tenths of a gallon and the CHTs bounce around by 5-10 degrees.  It's a little distracting and annoying and I think it would be easily solved by averaging a few seconds of data.

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Reply #1 - Oct 11th, 2017 at 3:03pm

Dynon Support   Offline
Forum Administrator
Dynon Employee
Dynon Technical Support

Posts: 13226
Both of these already have 1+ second filters. You're seeing the result of filtering out even larger changes. For the CHT's to bounce 10 degrees likely requires a data change of 50+ degrees.

Most installs don't have these issues, and can easily settle on a 1 degree CHT and 0.1GPH fuel flow. I'd want to investigate where that noise is coming from before trying to filter it out.

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Reply #2 - Jan 12th, 2018 at 2:53pm

David Brown   Offline
Senior Member

Posts: 480
You have loose connections or poor connections if they are bouncing around by 10 degrees (CHT) so re-terminate them.
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Reply #3 - Jan 12th, 2018 at 7:30pm

jakej   Offline

Gender: male
Posts: 1583
What connectors are you using ? are they the pink ones that are/were supplied in the sensor kit ?
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Reply #4 - Jan 14th, 2018 at 4:07pm

mmarien   Offline
Murray M.
Saskatoon SK CAN

Gender: male
Posts: 1187
Could also be a general grounding or power connection problem. The first graph below has a loose alternator connection. The second graph is after it was fixed. Much smoother EGT readings.




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