AbbeyMS Posted June 7, 2016 Report Share Posted June 7, 2016 We use Syvecs (Life) ECU's and within the closed loop set up we can you can set up different trim conditionsdifferent % limits for adding fuel + and removing fuel - so you can remove a small percentage and add a large percentagedifferent % limits for full throttle and part throttle ( uses a throttle percentage number to set up low load/high load condition)This will allow you to run closed loop 100% with different trim levels for low and high load. Thanks Davidv 1 Quote Link to comment Share on other sites More sharing options...
Scott Posted June 7, 2016 Report Share Posted June 7, 2016 Thanks for the feedback, some good suggestions. Will pass these on to the engineering team.Scott Quote Link to comment Share on other sites More sharing options...
mapper Posted September 4, 2017 Report Share Posted September 4, 2017 Plus one for that. I would like to have two 2d or 3D table. One for additiv and one for subtractive. I recently startet to use full time closed loop. It works great. Just the proportional table is set complet the wrong way in the base maps. I spent alot of time into the frequency and Gain table. Gain must be higher at low error and visa versa. Otherwise control algorith is not stable. And i like to add. Please make an axis option on all fuel correction tables for traget afr.Openlooop Target AFR and Openloop Target Overlay is not enough to adjust target afr for all conditions. For example i like to change AFR for the follow conditions: cold start, warm up, high IAT, very igh load situations, top speed runs, etc. Quote Link to comment Share on other sites More sharing options...
AbbeyMS Posted November 19, 2017 Author Report Share Posted November 19, 2017 Did this change ever get looked into? Maybe we will see it on the next firmware upgrade? Grant Baker 1 Quote Link to comment Share on other sites More sharing options...
MagicMike Posted November 19, 2017 Report Share Posted November 19, 2017 + another! Quote Link to comment Share on other sites More sharing options...
motor Posted December 7, 2017 Report Share Posted December 7, 2017 we need CLL PID Quote Link to comment Share on other sites More sharing options...
mapper Posted December 7, 2017 Report Share Posted December 7, 2017 6 hours ago, motor said: we need CLL PID Don't agree. The base map is just tuned complet the wrong way. I've done a lot of testing you want big corrections at small errorrs and smaller corrections at bigger errors. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 7, 2017 Report Share Posted December 7, 2017 6 hours ago, motor said: we need CLL PID P (gain) & D (rate) are already there. I is not commonly used for CLL. Quote Link to comment Share on other sites More sharing options...
MagicMike Posted December 8, 2017 Report Share Posted December 8, 2017 2 hours ago, mapper said: Don't agree. The base map is just tuned complet the wrong way. I've done a lot of testing you want big corrections at small errorrs and smaller corrections at bigger errors. Can you elaborate a bit please? Got an example of what kind of tables you use? Quote Link to comment Share on other sites More sharing options...
AbbeyMS Posted December 8, 2017 Author Report Share Posted December 8, 2017 8 hours ago, MagicMike said: Can you elaborate a bit please? Got an example of what kind of tables you use? are we again looking at the Syvecs Closed loop fuelling strategies? The ability to have different closed loop trimming parameters in relation to engine load? Thanks Quote Link to comment Share on other sites More sharing options...
mapper Posted December 9, 2017 Report Share Posted December 9, 2017 Regarding Lambda control error correction table. I spend alot of time to tune these. The base map is adjusted the wrong way around. Because the error correction tables is a % corretion of actual error, you want big corrections like 15% on small errors (0.03 lambda error) and small correction (like 5%) at the biggest error on the table. This is because a fuel film built up first in the ports when big correction are applied. This means it needs several burn cycles to get the whole change applied and measured. This means lambda control applies big changes two or three times for big corrections which leads to Lambda oscillation. On small changes fuel film built up is much less. Lambda change is done and measured much faster and within same burn cycle. This means the Lambda correction can be set much higher, because the change in AFR is measured instant. I have attached a tuned example. Alan, MagicMike, Sven and 2 others 5 Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted December 10, 2017 Report Share Posted December 10, 2017 That is opposite to what HPA teaches and the help file. Quote Link to comment Share on other sites More sharing options...
mapper Posted December 10, 2017 Report Share Posted December 10, 2017 On 10.12.2017 at 5:11 AM, Ducie54 said: That is opposite to what HPA teaches and the help file. I now it's the opposit what the manual says. I was skeptic too when i tuned it, but at the end of the day you have to adjust the numbers so that the result are good and not like what you may think should work. And with the explanation in my last post, I think my tuned example makes sense at all. Try it and you are going to see, that my settings work much better than the other way arround! Quote Link to comment Share on other sites More sharing options...
Rossobianconero Posted December 11, 2017 Report Share Posted December 11, 2017 I Will love to give it a try but you can't on the storm G4+, bummer... Quote Link to comment Share on other sites More sharing options...
mapper Posted December 12, 2017 Report Share Posted December 12, 2017 13 hours ago, Rossobianconero said: I Will love to give it a try but you can't on the storm G4+, bummer... You just have to add a Link CAN Lambda. CLL works with any wideband input! Quote Link to comment Share on other sites More sharing options...
MarcD Posted December 12, 2017 Report Share Posted December 12, 2017 I'm experiencing the oscillating adjustment with CLL with an aftermarket Wideband, not a CAN link. I've adjusted map to match your numbers. will upload before journey home from work and see if it improves. worst time for me is in stop go traffic, when lightly on throttle in first gear, crawling along. car starts to jump when CLL turned on with current setup (below). will report back later Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 12, 2017 Report Share Posted December 12, 2017 1 hour ago, mapper said: You just have to add a Link CAN Lambda. CLL works with any wideband input! Actually, the Storm doesnt have automode CLL, only the Xtreme and higher ECUs. Quote Link to comment Share on other sites More sharing options...
mapper Posted December 12, 2017 Report Share Posted December 12, 2017 4 hours ago, Adamw said: Actually, the Storm doesnt have automode CLL, only the Xtreme and higher ECUs. Ah really, haven't been aware. Sorry for wrong infos. Quote Link to comment Share on other sites More sharing options...
Davidv Posted December 12, 2017 Report Share Posted December 12, 2017 That's really interesting Mapper, I've been meaning to have a play with that CLL gain table but havent yet. I think you've just piqued my interest however! I'll try those other numbers for a starter and see how it differs. Quote Link to comment Share on other sites More sharing options...
MarcD Posted December 18, 2017 Report Share Posted December 18, 2017 so I've implemented this. no other changes. initial observations on driving.. through the lambda gauge, not through Link software.. AF ratios settle much quicker, and remain constant. I have idle AF set a little richer to give better idle, I might change this leaner now as it appeared much more stable than previously below 3k rpm, low gears in traffic on neutral throttle there remains an oscillation although reduced in amplitude, but the wavelength has been increased dramatically. previously this would occur every 0.5 secs, now approx every 1.5 sec. I'll check the ecu log when I get the chance and compare. cheers Marc MagicMike 1 Quote Link to comment Share on other sites More sharing options...
mapper Posted December 18, 2017 Report Share Posted December 18, 2017 2 hours ago, MarcD said: so I've implemented this. no other changes. initial observations on driving.. through the lambda gauge, not through Link software.. AF ratios settle much quicker, and remain constant. I have idle AF set a little richer to give better idle, I might change this leaner now as it appeared much more stable than previously below 3k rpm, low gears in traffic on neutral throttle there remains an oscillation although reduced in amplitude, but the wavelength has been increased dramatically. previously this would occur every 0.5 secs, now approx every 1.5 sec. I'll check the ecu log when I get the chance and compare. cheers Marc Hi Marc Good to hear back from you. How much does your AFR oscilate? Where is the wideband located? Depending on position, you need to adjust Lambda rate and Gain. You should do some testing. Tune your VE table with CLL off as good to your Target AFR as possible. Adjust your target AFR table to the rich side with one task by the amounts listed in the gain table 0,33 0,66 etc. And log, with a high logging rate, how long the sensor needs to get to a stable reading. Lets say it needs 0.3 seconds. This means your frequency in the lambda rate table may be max. 1/0,3 = 3.333 This test should be done at different loads and rpms to work out best CLL settings. Best place to do that is a load bearing dyno. MagicMike, Davidv and motor 3 Quote Link to comment Share on other sites More sharing options...
Grant Baker Posted December 16, 2018 Report Share Posted December 16, 2018 On 12/9/2017 at 10:30 AM, mapper said: Regarding Lambda control error correction table. I spend alot of time to tune these. The base map is adjusted the wrong way around. Because the error correction tables is a % corretion of actual error, you want big corrections like 15% on small errors (0.03 lambda error) and small correction (like 5%) at the biggest error on the table. This is because a fuel film built up first in the ports when big correction are applied. This means it needs several burn cycles to get the whole change applied and measured. This means lambda control applies big changes two or three times for big corrections which leads to Lambda oscillation. On small changes fuel film built up is much less. Lambda change is done and measured much faster and within same burn cycle. This means the Lambda correction can be set much higher, because the change in AFR is measured instant. I have attached a tuned example. Has this been confirmed as correct? Also, I agree with Mark (AbbeyMS) that we need the ability to alter +/- Fuelling separately... There are some really basic ECUs out there that offer different +/- trims... Shedley 1 Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted December 17, 2018 Report Share Posted December 17, 2018 The last firmware had 3D negative/positive trim tables. Quote Link to comment Share on other sites More sharing options...
Grant Baker Posted December 17, 2018 Report Share Posted December 17, 2018 The firmware that disappeared? Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 17, 2018 Report Share Posted December 17, 2018 Yes, in the next 5.6.6 firmware the CLL trim has 2 fully configurable 3D tables, so you can have different limits for adding fuel than for subtracting fuel and have those limits mapped against MAP, RPM, or almost any other parameter you like. I dont think the release is far away. mapper and Shedley 2 Quote Link to comment Share on other sites More sharing options...
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