Q&A Forum
Another incoming request.
Better managment of csv and log files would go a long way.
Iv done 47 tune now and my "Yourdyno" folder that I made to store the logs and CSV is looking like a real mess.
The way I see to do it the easiest would be when in your in main screen, Under file have a section for Sessions,
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New Session
Load Session
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Make each session save in a new folder under some name, Im my case id use Car number plate or there race number.
Then all the runs done while loaded in that session will only save log and csv in that folder.
Test name under the run will default to your session name so you dont have to re-enter it each time.
And also if it could remember brake and gear ratio settings for each session would also speed things up when doing re-tunes for customers.
If there no plans to add anything like this any time soon, then ill convert my csv helper app into a managment app.
Maikel, that's a cool idea. It is a pretty straight forward thing to implement (easier than any of the brake methods today). Not sure how many would use it though? Today you can load an RPM map, that's ok for running in, but of course not for simulating a road course.
Would it be possible to implement a feature to run a "brake map"? By that I mean the possibility to load a file (.CSV or an .XLSX) that contains a program of both a time and a percentage of brake force or an aim for a certain torque/hp that can be run by the dyno. It would even be better if the engine's throttle could be connected and implemented, but for now I've got that covered using an arduino and a stepper motor.
I would like to use this to recreate a map of a race circuit or other road and let the motor drive this simulated course. Both for breaking in an engine as for aquiring data.
^^^ Opps deleted the text part when pasting in the image.
I hope all these requests im making arnt starting to annoy you since I know you already have show speed instead of rpm in the works.
Would you be able to make another page below gear ratio for doing speedo calibrations which is basically the same as the gear ratio page.
Just make it store its gear ratio calculation seperatly so its not lost each time you do a rpm tune and change the ratio. 10 pulse and 0.101 lines up perfectly in the case of my dyno and using my car as a test which has been calibrated last year so is spot on.
As shown in my picture it would need to show KPH or MPH depending on what units your using. Since we need to take a picture of how the dyno speed lines up with the car dash to certify the speedo reading which is allowed to be 10% out in my location.
You could go as far as entering dyno roller diameter but just as iv shown in my screen shot will work fine for my needs.
Bmgjet, that's good improvements you suggest, and easy to implement. I will add it to the list.
It would be nice to have more control over the print out graphs.
Being able to move the devider between Aux and Power graphs would be very useful since the power/torque are more important to people so should be taking more space on the print out.
Also having the Yourdyno branding on each graph is a bit over kill. It only really need to be on the page once. Same with the RPM legend.
Here is a example of how I would want to print out pages.
Yes, speed instead of RPM is on the list!
Can I also request show speed instead of RPM to bump its priority up the todo list.
Calibrating speedos is another thing we do quite a bit with our old dyno software.
For the time bearing any one have any sort of idea how to get a idea of the speed.
Im guessing if you use the gear ratio as the rollers size then rpm could give you a easy to convert to speed number.
Thanks all for inputs/ideas, guys.
adriaanvanniekerk1, your graph looks like that because:
- You don't run a normal smooth RPM sweep, you run sweep with stops. If you just run a straight line from low to high RPM, the effects will disappear
- Your Moment of inertia setting looks wrong (too low). You when you accelerate, some power goes to acceleration and some go to the brake, then when you stop accelerating, more power go to the brake. If your MOI setting is too low, the power shown during acceleration will be too low, but when you stop accelerating that effect disappears, so the curve gets this strange shape. There is a video on how to determine MOI here: https://www.youtube.com/watch?v=0RVmxpCk0SE&. Note when you run stepped RPM sweeps like this you will never get a completely smooth curve, but setting the MOI correct will improve it.
So just run a smooth sweep and get the MOI right and you should be good to go!
Cheers,
Jostein
Within industrial engine measurement, then the ability to measure fuel flow is high on our wish list.
For diesel we need a combination of 2 fuel flow sensors (supply+return) and plot data together with dyno results, measured in g/kWh.
Idea for another useful feature would be dyno retarder fan control.
Current system im replacing switches the retarder fan on after each run using 3v to trigger relay.
So could it be possible to use 2nd brake output to switch it on after each run or at set load amounts.
Hi! i was wondering to add a Sync Mode on both brakes during.."rpm ramp" that could be possible?
Hello YourDyno Team.
Firstly, I would like to congratulate you on a brilliant system. Well done! So easy to use is what stands out for me.
My biggest issue is the Graph in RPM Sweep run where you hold the car at a certain RPM and measure power and move on to the next step. The values in-between the RPM steps is not useful and spoils the graph. In the RPM Sweep it would be far better if you record the average value at the specified RPM Step, plot it on the graph (only the average) and let the software draw a line/curve to the next RPM step instead of recording everything.
We can argue that Brake sweep or RPM-Ramp will give us such a graph that I am talking about, but take the exact same car, do all 3 different styles (RPM-Sweep in Steps, RPM-Sweep in Ramp and BRAKE-Sweep and you will end up with quite significant differences in power readings. For me the right way to measure power is RPM Sweep in Steps.
I genuinely like YourDyno and that is why I take the time to write this suggestion, but the graph plotting systems spoil it for me. I can not give such graph to my customers. Please fix this and this would be one of the best value for money systems out there.
Be careful of what OBD2 adapter you get. Not even the Chinese ones are made equal.
Bad Chinese ones wont sample more then once every 500ms. (if you sample too quickly they send fake info)
Good Chinese ones will do 238ms sample rate. (if you sample too quickly it sends command STOPPED)
Official ELM 2.1 and 2.2 will happily do there advertised 100ms sample rate (10 samples a second)