I had gotten the impression that, like in HV mode, EV mode also has separate ECO, Power, and Normal sub-modes. Clearly the mode switch works in EV mode, and the displays show which you're in. I just tried, in EV mode (with a full battery) coming to a stand-still on an open road and flooring it a few times, alternately in ECO and Power modes, comparing the apparent acceleration each time. I didn't "scientifically" time it, but just compared the subjective feeling of the acceleration. I only went up to about 35MPH or so. I didn't really notice a whole lot of difference between Power and ECO modes under those circumstances. It was no Tesla by any means, but both modes were pretty darned quick accelerating, but not all that different, all in all. Maybe ECO mode is more economical in other ways; not sure... What do you folks see along those lines?
In one of their videos, Toyota pointed out that the ECO vs. Normal vs. Power submodes and EV vs. HV are independent systems. (I can't remember their exact phraseology, but something close to that.) That and the fact that you can still select between the three modes, and that the displays indicate the three modes, at least implies that it does have the three submodes. I think I recall that somebody here also reported that s/he got the impression that it did perform more powerfully in Power mode. iPad ? Pro
Yeah, me too. Well, 99.99% of the time. Other than this experiment today, I have put it into Power mode twice to facilitate merging onto a freeway. That was just for a grand total of 8-10 seconds of driving time, though! iPad ? Pro
I tried it out a while back and did feel a difference. If I recall correctly @jay Lee posted some results from his experimenting a month or so back
These are different throttle displacement vs. torque mappings. When you floor it they are all the same. Flooring the pedal translates by the system as emergency, so you expect it to give all it has no matter which mode is used!
On the PiP, putting it into ECO mode also tweaked the climate control system but they broke that out into an explicit option on the climate control screen in the Prime. So all that is left for the ECO/Normal/PWR setting in the Prime is the throttle displacement mapping. As giora says, when you floor it, it doesn't matter which mode you are in. Zero displacement is "idle", floored is maximum power; they only differ in the displacements in between. In PWR mode, smaller initial displacements request more power than that same displacement in ECO mode, thus giving it a "peppier" feel. You have to push the throttle further to get the same power request when in ECO mode. But both converge to the same value at "floored". The throttle is just an input device to the control computer, so the software can interpret it however it wants.
Another posting has a great graph. Zero is zero on all modes. 100% is the same on all modes. Normal is a straight line from zero pedal and zero power to 100% for both. Econ on sluggish to start with more power past half way. PWR is zippy to start with not much left at the top end.
Yeah, gotcha. Again kinda like y=x vs. y=x^2 vs. y=sqrt(x): On all three, y(0)=0 and y(1)=1, but, with the accelerator pedal, meaning x, down halfway: for y=x (more or less Normal mode), y(0.5)=0.5 for y=x^2 (more or less ECO mode), y(0.5)=0.25 for y=sqrt(x) (more or less Power mode), y(0.5)=0.71... iPhone ? Pro
Full-pedal depression is the same in all three modes. 2016 Prius PDF Presentations - Chief Engineer & Hybrid Engineer | PriusChat[/QUOTE]
