How to find the shift pattern?

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HV
HV on 27 Sep 2019
Commented: HV on 27 Nov 2019
Hi,
I've got a curve (and data) in which the Rpm-schedule of an engine is plotted, and the purpose is to find the shift pattern of the car.
Does anyone know how to find that out? Or to find out when the shifting takes place?
I've also got the data/curve of the vehicle speed and fuel consumption, just in case I'm using the wrong curve to find my answer.
Below is the curve I'm using.
2019-09-27 (2).png
Thanks in advance!

Answers (2)

Kartik Adsule
Kartik Adsule on 27 Sep 2019
If you have the vehicle speed, you can compute the gear ratio = vehicle speed/ engine speed, whenever the gear ratio changes there is a gear shift happening. That should probably work.
  2 Comments
HV
HV on 28 Sep 2019
Edited: HV on 28 Sep 2019
Thanks,
But how do I compute those two?
HV
HV on 28 Sep 2019
Edited: HV on 28 Sep 2019
I tried to do what you suggested, but I got this out of it.
What did I do wrong?

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Kartik Adsule
Kartik Adsule on 27 Nov 2019
Sorry for the late reply.
Your vehicle speed needs to be in rpm (basically angular velocity). Also, can you show the plot of vehicle speed, it looks like its zero throughout. Is the sampling time of engine speed and vehicle speed same?

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