Prius Plug-In Production Car to be Revealed On Press Day 13 Sept

The EPA test will turn on the prius phv engine even in EV mode unless its parameters have changed, so it will get a blended mode and a CS figure. We can assume the CS number will be around 50mpg, but since we don't know the changes we will not know the blended mode numbers until toyota discloses more.

 

Let's see ...

I expect Prius EV consumption to be 240 wh/mile at the wheel in EV , therefore 240/.85 = 282 wh/mile at the wall socket. EPA assumes 33,400 wh/gallon, so EV mpg(e) is 118.

Starting from a UF of 0.3 and city or highway MPG of 50, I get

(118*.3 + 50*.7) = 70.4 MPG(e) combined.

Get ready for wild screams over at gm-volt LOL
All of a sudden mpg(e) is going to be the spawn of the devil, and the EPA idiot puppets of their Japanese masters.

 

Why would PHV be much more efficient than Leaf ?

PHV will also get the 30% fudge factor applied - that will bring its mpge to Leaf levels.

 

Cd on the highway, weight in the city.

The converse question for you is: why would Prius EV energy/mile be particularly worse than CS energy/mile ? I started from the assumption they will be the same.

 

I think so far, only the Tesla Roadster is rated at 119MPGe.

Extreme window sticker: Tesla Roadster 2.5 estimated at 119 MPGe

 

If the city cycle can be completed on pure EV, it is going to get higher than Leaf's 106 city MPGe because it is lighter. Highway with gas blended will not be as high.

EPA weights city 55% and highway 45%. In Europe, it is the opposite so watch out for it if they announce the combined figure tomorrow.

 

That was with cruise control on. How does a Prius do @ 55 w/cruise on?

Ah, gasoline equivalence. At the wheels. With an imagined MPG and ICE efficiency. Seriously? OK, then: 260 wh * 0.68 (charger/TMS efficiencies) puts 176 into the battery. Maybe another 10% lost through the relatively simple drivetrain puts us at 158 Wh at the wheels in the Volt. Oh snap!

But why should I bother? I'll just quote Wayne again:

Volt beats the Leaf on the highway BTW. 2011 EPA numbers had a calculation error which has been corrected. Leaf's an energy pig too, huh?

 

Your charging efficiency number is way off, for starters. PHV has a 2.8 kWh (usable) pack that takes 3.6-3.8 kWh to charge based on reports here. Using the lower number, you're already at 310. A Leaf is 320 city.

You need to account for the 10% extra weight too.

 

Just hours away... :rockon:

 

Do we know the time of a press conference or anything?

 

70mpge is my guess too, but I'm thinking the CS mileage will be higher and the CD lower than your calcs.

 

Today's the big day ... WOOO HOOO! Let's get the show on the road!

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:rockon:

I got a feeling that PC's bandwidth is going to be sorely abused today. What are we guessing ... 9am pacific time?

 

Read Wayne's report again: He compared 80% city/suburban driving in the pre-production PiP to 100% low speed highway driving in the Volt.

So while Wayne may have found the perfect stretch of road and conditions to eek out 210 wh with the Volt in his hands, your attempt to extrapolate this into a Prius Vs Volt overall efficiency comparo is silly.

 

Looks like Plug-in is now on the BACK right side (a birdie mentioned it would be there) and I am waiting for confirmation that it is 15 miles on EV.

 

I'd guess mpge of a phev would necessarily be worse than an EV. I do crazy good to eek out 5 miles (at the wall ... meaning I count for charge losses) per kWh ... so that's 200wh per mile in the Leaf. But a phev is lugging around the extra ICE, it's plumbing, and it's fuel. The electricity usage would have to be higher imo, with the extra weight. no?

SHweeet! That's what I was thinking would happen ... good ol' Toyota, seldom over promising, and frequently over delivering.

:rockon:

 

Maybe you should read it again. He was 60/40 in the Volt.

In his pure low-speed test, Wayne saw 173 Wh/mile from the wall in the Volt. The best he did with a PHV Prius was 184 (20.1 miles). Pretty pathetic given the 300lb advantage the PHV has. I hope the production car is better.

The data (none of it, from Wayne or the other PHV testers) does not support your assertion that the Volt's energy usage is "miserable". Unless the PHV is miserable too.

 

Production version of PPH (Prius Plug-in Hybrid) will weight 3,131 lbs (1,420 kg). It'll weight 650 lbs less than the Volt.

 

All this comparo stuff is really not going to help the Volt. Wayne does hypermiling and I would not use his numbers. EPA officially rates the Tesla Roadster - 119mpge, The Leaf - 99mpge and the Volt - 93mpge. As for the Prius phv, it is likely to be rated more than 93mpge.

 

Looks like the Toyota press conference is over and articles are starting to trickle in. Carsessions.com Toyota introduces the new Prius Family in Frankurt says

"The Toyota Prius Plug-in Hybrid represents the latest development of the company's modular Hybrid Synergy Drive platform (HSD) which in this case produces 134 bhp from a lithium-ion battery with a high capacity of 4.4kWh and a weight of only 80kg that is mated to a petrol engine.

Offering a choice of three modes in which the car can be driven (HV, EV and EV-City), the Toyota Prius Plug-in Hybrid can travel up to around 14.3 miles on just electric power and can return as much as 134.5 mpg, with CO2 emissions as low as 49 g/Km when the petrol engine kicks in.






The Toyota Prius Plug-in Hybrid weights 1,420 Kg (50 Kg heavier than the regular Prius) mainly due to its batteries, which by the way can be fully recharged in only 1.5 hours at a standard, 230V household outlet.