Quote:
Originally Posted by Power Hungry
The nice thing about this dyno is that we can "script" a simulated environment and drive hundreds of simulated miles. The only thing we can't really account for is headwind, but grades are no problem at all.
It's our plan to eventually get a good script together and start doing some really in-depth mileage testing, just so we can quantitatively show the benefits of tuning. Combined with datalogging, it will be very useful.
|
Couldn't you simulate a headwind by increasing pulling load? Since you can get it at a standard cruising speed that can be "scripted" in at a standard rate of parasitic loss, similar to a grade. IIRC wind resistance increases exponentially by speed, so that makes it a calculable value. Find the surface area up front, adjust for the aerodynamics (since it is not completely a flat faced cube, like the height of the windshield for example) then use the formula they use for properly gauging wind strength resistance on sky scrapers, reduce that by the ratio of frontal surface height (number you got earlier) and wheel base length for angular leverage (since the truck is longer than it is tall) to make it seem like more weight on the axle. It makes perfect sense and you could probably do the math in your head.
...yeah, I kinda made that up for the sake of humor. Don't hurt yourself on it.
That is really cool though, you'll come up with something.
Tue, June 14th, 2011, 01:06 PM
Threaded Mode