Aim Air/Fuel Ratio only @ full throttle
#1
Racer
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Aim Air/Fuel Ratio only @ full throttle
Has anyone figured out a way to create a math channel that gives the A/F ratio, but only at full throttle. The idea is to create a report that calculates min/max/ave, but only while at full throttle.
Thanks,
Greg
Thanks,
Greg
#2
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Yes. You have to do an if statement with the condition tps greater than of 90%, 0 if not, lambda if true. Then do you channel report using average if not zero for lambda. You will. Also get a good graph with this.
You also want to look at areas of increasing throttle to check enrichment. That is an area many carburetored and aftermarket injected cars don't have correct.
You also want to look at areas of increasing throttle to check enrichment. That is an area many carburetored and aftermarket injected cars don't have correct.
#3
Racer
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#4
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Just the regular measures graph (strip chart). That math channel will give you a good graph where you can see how the lambda changes as the RPMs change (look at both at the same time). The chart will only tell you the average, but not were the lambda deviates.
#5
The Penguin King
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Maybe it exists, and I am missing it, but the system really needs a null values. That way you could code if WOT, AFR=AFR, AFR=NULL. Then the non-value data wouldn't affect min-max, nor averages.
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They are working on that. Only 2 system do that to my knowledge. The average without zero fixes averages, max is good, it's only min that is affected.
#7
Three Wheelin'
I am interested in creating math channel like this... showing AFR versus RPM at WOT. It will be my first math channel. Can any of you recommend a good video that shows the basics of setting up math channels?
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#9
Three Wheelin'
Thanks Matt. I think need something more basic than that. I have no familiarity with the analysis software and speed traces, et cetera.
#11
Three Wheelin'
Thanks Matt. I re-read that instruction. Clear as mud.
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It is pretty bad!
For math channel education, I really recommend John Block’s Auto-Ware webinars. He can accommodate questions from attendees in building specific expressions to do what YOU want. Also, another local resource with a high degree of competence are David and Ellen Ferguson at Veracity Data in Paso Robles.
Roger Caddell is a great personal, talk-on-the-phone resource, too. If he doesn’t know the answer, he can find out.
For math channel education, I really recommend John Block’s Auto-Ware webinars. He can accommodate questions from attendees in building specific expressions to do what YOU want. Also, another local resource with a high degree of competence are David and Ellen Ferguson at Veracity Data in Paso Robles.
Roger Caddell is a great personal, talk-on-the-phone resource, too. If he doesn’t know the answer, he can find out.
#14
Three Wheelin'
Thanks for the suggestions. I'll look into the webinars.
I am tying to do some additional tuning on track. I can use the SmartyCam video as a visual tool. But I think it should be also possible to use the logged rpm and AFR data.
What I am trying to do is create a graph or table that shows rpm versus AFR at full throttle. Ideally every 250 rpm between say 3-7k rpm, and at WOT I would have an AFR value. I think I understand that to get the table or graph I'll need a math channel first.
A "how to" video of the process would be helpful. Or even just a posting of the necessary steps/equation(s).
Does anyone here know of other forums where this has been discussed?
If necessary I can try to reach Mr. Cadell or ping Dave and Ellen, but I want to see if there is a resource already out here in cyberspace.
I am tying to do some additional tuning on track. I can use the SmartyCam video as a visual tool. But I think it should be also possible to use the logged rpm and AFR data.
What I am trying to do is create a graph or table that shows rpm versus AFR at full throttle. Ideally every 250 rpm between say 3-7k rpm, and at WOT I would have an AFR value. I think I understand that to get the table or graph I'll need a math channel first.
A "how to" video of the process would be helpful. Or even just a posting of the necessary steps/equation(s).
Does anyone here know of other forums where this has been discussed?
If necessary I can try to reach Mr. Cadell or ping Dave and Ellen, but I want to see if there is a resource already out here in cyberspace.