RPM based Horsepower calculation
Posted: Mon May 01, 2017 8:20 pm
Hi Harry,
I drive a classic sportscar with a modified engine and am looking for a solution to evaluate changes made to the engine.
For this, I would like a solution that generates hp and torque vs. rpm graphs.
I believe that GPS-based acceleration is not accurate enough for this, plus I wouldn't have the rpm information.
Using a complete vehicle model combined with all required parameters and an accurate rpm vs. time signal should give very accurate results.
From what I read in one of the other posts, I think you have this vehicle model.
What I haven't understood yet: do you use the method described above when a OBD dongle is connected?
Second question: is there way to get rpm info into your app on an old car without OBD?
I actual own an old device that does exactly this, called a Road Dyno (http://www.dynoplus.co.uk/roaddyno.shtml), but would much prefer a modern solution.
Thanks for your time, I love my Laptimer app and would love even more to be able to use Dyno with rpm vs. time without OBD.
Querlenker
I drive a classic sportscar with a modified engine and am looking for a solution to evaluate changes made to the engine.
For this, I would like a solution that generates hp and torque vs. rpm graphs.
I believe that GPS-based acceleration is not accurate enough for this, plus I wouldn't have the rpm information.
Using a complete vehicle model combined with all required parameters and an accurate rpm vs. time signal should give very accurate results.
From what I read in one of the other posts, I think you have this vehicle model.
What I haven't understood yet: do you use the method described above when a OBD dongle is connected?
Second question: is there way to get rpm info into your app on an old car without OBD?
I actual own an old device that does exactly this, called a Road Dyno (http://www.dynoplus.co.uk/roaddyno.shtml), but would much prefer a modern solution.
Thanks for your time, I love my Laptimer app and would love even more to be able to use Dyno with rpm vs. time without OBD.
Querlenker