Dr. Rangelove (or "How I Learned to Stop Pumping and Love the Plug")

The heat-pump information was included in an article here months ago. I wouldn't worry about it.

 

That explains why you did not cover that pre-heat / pre-cool feature from the plug power.

I think we first found out from this video Danny posted:

 

Tony, I read the title of this thread out loud to DH...

He almost peed his pants laughing. He gives you "props" too. :thumb:

 

LOL. We will just ask questions and you wink once for yes, twice for no.

The reason I asked, ofcourse, is that Leaf consumes 20 to 25% energy in AC/Heat.

 

AAaah! Guys... where did that handy little chart go that showed the various Leaf ranges from various driving cycles!? Need it and can't find it!

Oop. Found it:
http://img704.imageshack.us/img704/3036/rangenf.png

 

i think the phv prius will exceed the 50+ mpg rating of the regular Gen III because it is using a li-ion battery, not a ni-mh battery. so the regular hybrid battery will hold more charge, and thus boost fuel economy. Im guessing that once you deplete the EV batteries, you can still travel in regular hybrid mode at the very least 60mpg but probably more like 75 mpg.

 

Hi All,

The power of the PHEV Li-Ion battery will result in better regeneration efficiency in city driving short braking times, and better hill mileage on the higway. The larger battery will have lower series resistance, and result in much better efficiency of re-use i.e. acceleration in EV. So, one does not have to program the car to pop-on the engine with the medium pedal pushes.

These are things you can accomadate with a Prius today, if you slowly brake, and only use the battery at low currents (such as hill topping on secondary road crusing and slow speed maneuvering).

 

Lithium-ion battery is more efficient than NiMH so it heats up less. More energy gets stored rather than loosing it through heat.

I want to know if PHV Prius also use MG1 during EV acceleration. I think it is using MG1 in combination with MG2 to accelerate in EV mode due to more power available from the PHV battery pack.

Is there a way to monitor MG1 current with ScanGauge II?

 

From our discussion with psd, mg1 will turn relative to the speeds of mg2 and the ice(at 0 rpm at speeds below 100kph). Energy balance will be entirely dependent on amount of energy provided by the battery and the speed of the vehicle. If we know the power of the battery provides then this can be determined. AFAIK it does not currently, but it could with a more powerful battery and allowing the ice to spin.

 

Bit of mathematics:
kWh: 3.66
miles: 14
km: 22.53 (=miles*1.609344)

(kWh*1000/km=)
Prius PHEV consumption is 162.44 Wh/km (or 261 Wh/mile)

Consumption data for:
- Leaf is: 150 Wh/km; equals: 15.2 miles on 3.66kWh (241 Wh/mile)
- Mitsubishi iMiEV: 125 Wh/km; equals: 18.2 miles (201 Wh/mile)
- GM Volt: 156.25 Wh/km; equals: 14.6 miles (251 Wh/mile)

Answer: Leaf would do over a mile better.

Nice to meet you all :welcome:

 

I didn't read anything honest. Nope didn't see a thing. Have no clue how Toyota works the AC/heat sys in PHV

 

Just remember that quoted consumption data is often based on the DC Power stored in the battery and transfered to the motor. It usually does not include charging efficiency, which the Prius number Tony calculated does. He was measuring AC watts in vs. miles traveled, and also noted up to 16 miles of range for the same amount of charge.

That would put the PHV Prius at 229-261 AC Wh/mile, which seems quite respectable.

For some historical perspective from EVAmerica:

1997 PbA GM EV1: 164 DC Wh/mile (SAE J1634), 248 AC Wh/mile
1999 NimH GM EV1: 179 DC Wh/mile (SAE J1634), 373 AC Wh/mile
2009 BMW Mini-E: 208/223 DC Wh/mile (SAE J1634 UDDS/HWY), 259 AC Wh/mile

Data: Advanced Vehicle Testing Activity - Full Size Electric Vehicles

I don't think the Toyota PHV Prius, Leaf, or Volt have been tested in this manner at DOE yet, am very interested to see the data