Charging efficiency of PIP

but it is significant in these calculations, much larger than "noise" in determining the charging losses.

Do you have the kWh in/out of just the pure EV portion of the 130+ miles, like maybe the first 100 miles before the ICE came on?

 

I'm just reporting the data on the EPA site.. I've not measure it since I don't own one.

On the other had others have reported that type of level, e.g. see
First day with my Prius Plug-in | Page 4 | PriusChat
for some 120v charging data (3.28kWh)
and for charge point data over 3.1kWh see:
Kill-a-Watt owners: PiP kWh usage accurate? | Page 2 | PriusChat

 

In your case, that was about .1 gallons then? Does anyone know how much electricity that would have resulted in? I am sure it isn't 100% efficient, after all it is running the engine, and going into generating heat, and charging the battery. But if only .03 gallons charged the battery, that is still about 1KW, or about 4% of your total Electricity measured.
These small numbers would result in a significant change to the efficiency.

I know the estimated EV range changed, but as the HV mode runs, does the KW used also change (assuming KWh used is displayed in the car?)

 

EPA said it takes 3.2 kWh (and 0.3 gal) to go 25 miles in PiP. I agree with drinnovation's assessment regarding the charging loss difference between L1 and L2 chargers and the "top off" overhead. EPA also said 2011 Volt takes 12.9 kWh to charge 10.6 kWh.


POWER (P) = VOLTAGE (V) X CURRENT (I)

Power, which expresses the work performed by electricity charging the battery within a given amount of time, is calculated by multiplying voltage by current. Doubling voltage (120 -> 240) would cut the current by half.


Next, by following Joule’s Law (Calorie = Current ^2 x Resistance), the power loss in terms of calories is reduced to 1/4.

 

Mike switched to HV mode at 55 mph and went for 5 miles. At that speed, I doubt ICE warm up would not make enough power. That means, the PHV battery power will be "borrowed" and the ICE won't shut down until it returned the "borrowed" charge. See this data I captured. I switched from EV to HV mode two times (ended with EV). The SOC management is pretty good.

Why did his EV range went from 8.0 to 9.1 miles? Well, he exited the freeway so the regen brake recaptured the energy he used to get up to 55 mph (with PHV battery).

The 5 miles in HV mode isn't counted as EV mile so, I don't think there is anything to worry about.

 

Head hurts, brain full, too much data, too much data, blacking out!!!

 

...Who Let the Engineers Out?... (to the tune of "Who Let the Dogs Out" from 1999)