Interesting Cyclical Surging Under Hard Acceleration

[bwalkhouse]

Yesterday and today I had occasion to require rapid acceleration from my Prius shortly after starting up.

The engine note remained steady, but I could feel a definite cyclical surging in the output from the PSD, with a noticeable pulse and then a lag every couple seconds.

Has anyone else noticed this?

BTW acceleration is excellent in the Prius 8), I ended up speeding while making my erstwhile observations!! Luckily no radar was observing me!

[TonyPSchaefer]

The entrance/exit from my work parking lot is on the inside of a curve. Therefore, both lanes of traffic are approaching from acute angles. If I'm the vertical line in a capital "T" the cross traffic isn't perpendicular, but rather more like a rounded carot ^. Visibility is tough and when you see an opening, you take it.

Needless to say, I punch it. And have experienced similar surges and lunging. I first wrote it off as the tires slipping and power redistribution, but have since experienced it on dry pavement as well. I suppose Priapus is trying to tell me that I'm accelerating too hard, but I am trying to avoid his telling me that my side airbag has just deployed.