Emerald datalogging capability

[Pupp]

Anyone played with the logging facility at all?... had it running on the way in to work this morning and am pretty impressed with how much info it captures. Already spotted an air temp issue I would otherwise have completely missed

Don't think I've seen it discussed here at all?

[Slinky]

Data logging, regardless of ecu is massively helpful in ensuring engine health, I'm not in a position the utilise an alternative ecu on the roadster, but am looking into external obd based live data views for monitoring purposes..

[Scrooloose]

Yep - I've been using it. Very cool.

I like the way that it actually logs every single sensor, then you can go back and select up to eight that you want to see simultaneously.....

[Mars]

I used it extensively to log engine speed/load sites against the AFR output of a wideband lambda. Very useful to see where your map is out. You can tailor it to near production-car levels over the course of a few 20 minute runs.

[hiltonig]

how long is the logging recorded for ? mines in for emerald fitment at the moment.

[Pupp]

hiltonig said:

how long is the logging recorded for ? mines in for emerald fitment at the moment.

It will hold two hours' worth of data selected from 8 user assignable channels on a looped basis (ie it's the latest two hours). Seems really useful, just surprised more has not been made of it...

[Mars]

when I was playing with it I was not using the latest K3 ECU so I was logging to my PC. Is it any different with the latest? Can you log to internal ECU memory?

I didn't think there was a limit to logging time when using the PC but I only ever went for 20 min runs before analysing the logs and starting again.

[Pupp]

Mars said:

when I was playing with it I was not using the latest K3 ECU so I was logging to my PC. Is it any different with the latest? Can you log to internal ECU memory?

I didn't think there was a limit to logging time when using the PC but I only ever went for 20 min runs before analysing the logs and starting again.

It's to the PC in K3 too. 20 mins would be plenty to look at for sure

[hiltonig]

what do you guys think of the conversion, whilst taking the car to norfolk it was running really well, I hope this conversion irons out the shunting I feel at light revs around town.

[Pupp]

hiltonig said:

what do you guys think of the conversion, whilst taking the car to norfolk it was running really well, I hope this conversion irons out the shunting I feel at light revs around town.

I like it. Have had one or two niggles that are documented on here in various threads but they've been overcome or are in the process of being so. As at the time of posting this, the car has not been on the rollers (booked for next week) but is entirely drivable on a choice of maps that I have cobbled together with a bit of thought from some donated templates and I've not spent that much time on that side of it (not had chance). The adaptive facility works well and I'm now achieving steady state stoich on constant throttle light loads with varying degrees of richer running under higher loads. It's a fiddlers dream TBH

Almost tempting to cancel the RR slot - almost!

Something with the logger has me scratching my head though... it's recording coolant and ar-temps that are not plausable and that don't mirror what the live adjustments display shows in real time... ie -5degC for air temp this afternoon (which it plainly wasn't) whereas the ecu was seeing 21 deg according to the Live screen. I'm thinking this is actually a software error and will show Emerald the logs during the week to get their views.

[hiltonig]

keep us in the loop as too what you find

[rev-erend]

Only used mine for a short time - looks useful.

[Crash Test Dummy]

i had mine on for a while but the display was not too appealing. Although it does have seem to have some pretty good features.

I much prefer my Logworks running off my wideband. Can give you 6 dials displaying realtime data, as well as logging. Although i cant seem to get logwork working on my new laptop which is a pain.

Emerald is a great piece of kit and the deeper I look the more I find

[Pupp]

Pupp said:

Something with the logger has me scratching my head though... it's recording coolant and ar-temps that are not plausable and that don't mirror what the live adjustments display shows in real time... ie -5degC for air temp this afternoon (which it plainly wasn't) whereas the ecu was seeing 21 deg according to the Live screen. I'm thinking this is actually a software error and will show Emerald the logs during the week to get their views.

Emailed Karl today on this and had a swift reply as is usual
Seems there is a known software glitch that causes this... log files can either be manually fixed to then display correctly (will post up the gen if anyone needs it), or an updated version of K3 is available with the bug fixed

[fergus]

Pupp said:

Pupp said:

Something with the logger has me scratching my head though... it's recording coolant and ar-temps that are not plausable and that don't mirror what the live adjustments display shows in real time... ie -5degC for air temp this afternoon (which it plainly wasn't) whereas the ecu was seeing 21 deg according to the Live screen. I'm thinking this is actually a software error and will show Emerald the logs during the week to get their views.

Emailed Karl today on this and had a swift reply as is usual
Seems there is a known software glitch that causes this... log files can either be manually fixed to then display correctly (will post up the gen if anyone needs it), or an updated version of K3 is available with the bug fixed

How recently was the bug fix made? I've just had a K3 upgrade about 2 months ago....

with respect to the datalogging, does the ECU log the last 2 hours all the time, or does it need to be enabled to do this? How is the data downloaded, via the comms port?

[Pupp]

fergus said:

Pupp said:

Pupp said:

Something with the logger has me scratching my head though... it's recording coolant and ar-temps that are not plausable and that don't mirror what the live adjustments display shows in real time... ie -5degC for air temp this afternoon (which it plainly wasn't) whereas the ecu was seeing 21 deg according to the Live screen. I'm thinking this is actually a software error and will show Emerald the logs during the week to get their views.

Emailed Karl today on this and had a swift reply as is usual
Seems there is a known software glitch that causes this... log files can either be manually fixed to then display correctly (will post up the gen if anyone needs it), or an updated version of K3 is available with the bug fixed

How recently was the bug fix made? I've just had a K3 upgrade about 2 months ago....

with respect to the datalogging, does the ECU log the last 2 hours all the time, or does it need to be enabled to do this? How is the data downloaded, via the comms port?

Don't know in respect of the first query, but will ask tomorrow and should have the updated software then so will post up version nos. etc.

The logging is 'looped' if you go over the capacity...it overwrites the oldest records and keeps the most recent 2 hours worth. Data is transferred to the PC via the supplied serial cable from the regular comms port on the ECU and can be viewed real time in a separate window to the live adjustments screen or whatever is up on the 'management' suite.

[Crash Test Dummy]

Can somebody tell me how to switch data logging on please. I cant seem to figure it out.

[Pupp]

Crash Test Dummy said:

Can somebody tell me how to switch data logging on please. I cant seem to figure it out.

It's accessed through the 'Graphs' drop down

Separate manual

I don't yet have the software fix for the temperature logging (Karl was still writing it when I was there last week) but will post up when to hand

[marT350T]

So do you have to have your laptop connected to data log or can you just down load it after a race etc ?

[Mars]

marT350T said:

So do you have to have your laptop connected to data log or can you just down load it after a race etc ?

I asked that above and got the following answer:

Pupp said:

Mars said:

when I was playing with it I was not using the latest K3 ECU so I was logging to my PC. Is it any different with the latest? Can you log to internal ECU memory?

I didn't think there was a limit to logging time when using the PC but I only ever went for 20 min runs before analysing the logs and starting again.

It's to the PC in K3 too. 20 mins would be plenty to look at for sure

If you don't want to have a PC in a race car (and who would?) then you can buy data logging machines like th RaceTechnology DL1 which is a nice and small item, and a lot more robust than a laptop. It uses SD cards for storage and has GPS and an accelerometer built-in, so you get to log more than just the ECU outputs.