Not sure if this topic was discussed but wanted to check with others myself. When coming to a stop carrying acceleration onto a hill, say from a highway exit, my Prius seems to carry the momentum itself in maintaining the speed even when the gas pedal is let off requiring firmer braking. Almost feels like there is supplemental power applied by the electric engine for unknown reason. This is a very odd application resulting in unexpected sensation of acceleration. Anyone else notice this? I've been meaning to ask this and I'm guess others are accepting this as hybrid effect?
With foot off the throttle, you should get a small amount of regen braking as shown on the HSI. With slight throttle, you can remove some or all of that or add a little assist, as desired (ECO mode helps here). There should be no acceleration except that supplied by gravity or shown on the HSI. It is a great glider with adequate tire pressure.
This sentence makes no sense from the standpoint of physics, but I think I understand your question. You wonder if the Prius applies power while coasting up a hill after a higher speed run? If so, the answer is no. When you let off the gas, the Prius applies a small amount of regenerative braking to simulate engine drag. However, the Prius coasts well, so the drag is probably less than that which you have become accustomed in normal cars. I believe that is why it feels odd to you. Tom
