2017 Prius Prime (Plug-in Hybrid) Full Product Information & Technical Docs (PDF)

80% is the maximum from CHG mode.

 

right, but from empty, that might be using the mg as much as a long downhill descent.

 

Maybe the program is simpler than we think? Whenever the ICE starts cold - it runs the warm-up cycle, period. I do not recall tackling a scenario in which it doesn't.

 

In this downhill scenario, the ICE is being spun up to act as an energy sink for braking. No fuel is being supplied to it, and thus there isn't any emissions for the catalytic convertor to take care of.

While there is still enough energy in the battery when the car reaches the bottom of the hill, why does the ICE actually turn on and start burning fuel? It wasn't spun up for propulsion, and it isn't needed for it now.

 

Blowing air through the catalytic converter cools it down. So, the ICE will need to heat it back up...

 

I doubt if we ever understand all circumstances it which the PiP engine is required to start (firing), Toyota does not list them all.
But we are in the PiP2 forum and I believe that the number of those circumstances will be reduced drastically in the new design.

 

Yes, and in the hybrid, the ICE will be coming back into use at the bottom of the hill anyway. If a PiP wasn't using the ICE and catalytic converter at the top of the hill, and still has enough charge to not need them at the bottom of the hill, having the ICE fire up for a pointless warmup is frustrating.

One would hope so, but this feels like an oversight on the PiP. The subrountine for warming the catalytic converter after extended engine braking on the hybrid wasn't altered for the PiP.

 

maybe, maybe not. it's all conjecture as to why.

 

THE CATALYTIC CONVERTER ISN'T NEEDED.
AT ALL.
PERIOD.
IT DOESN'T NEED TO BE HOT.
IT'S NOT CONVERTING ANYTHING.
THERE ARE NO EXHAUST GASES.

Jesus, people. Read up.
We're talking about EV driving in a Plugin-hybrid Toyota Prius. A version of the Prius which drives a relatively long distance on wall-charged electricity only and will do 99% of my daily driving without going outside the EV range before charging.

 

As long as we are conjecturing:

Remember the fickle fuel bladder (only US) in the gen 2 Prius? To attain the AT-PZEV rating, the simple activated charcoal filter alone did not suffice, because it failed to capture a tiny portion of the evaporative emissions while the ICE was off.

Similarly, the ICE produces a tiny amount of vapors while spinning, even when no fuel is being burned. The vapors from the PCV system are not completely captured unless they are burned in the cylinder or in the warmed up catalytic converter.

Perhaps the Prius is programmed to start the engine as soon as or somewhat before it might be needed for braking, so that it can more cleanly burn or catalyze the PCV vapors.

 

It appears the ICE fires up after it has been spinning during the down slope though. Then the crankcase vapors are mostly a result of the oil getting heated up from burning fuel.

 

Here's a link to the official brochure...

http://www.toyota.com/content/ebrochure/2017/priusprime_ebrochure.pdf

 

^ Thank You!

 

The above document says:

"Prime Apps are exclusively offered on the Prius Prime Advanced and require an active Safety Connect subscription. Prius Prime
Advanced will include a 3-year complimentary trial of Safety Connect."

The owner's manual says:

"Smartphone-linked operation (vehicles with 11.6-inch display) After applying to Entune, it is possible to use the smartphone application to operate the Remote Air Conditioning System."

In other words, the manual says it applies to both of the models with the 11.6" display, not just the Advanced, and the manual says you don't need a Safety Connect subscription just an Entune ID.

The manual confirms this in the Safety Connect section where it describes the Safety Connect services as:

● Automatic Collision Notification*
Helps drivers receive necessary response from emergency service providers. (→P. 551)
*: U.S. Patent No. 7,508,298 B2
● Stolen Vehicle Location
Helps drivers in the event of vehicle theft. (→P. 551)
● Emergency Assistance Button (SOS)
Connects drivers to response-center support. (→P. 551)
● Enhanced Roadside Assistance
Provides drivers various on-road assistance. (→P. 552)

Note there's no mention of the Prime Apps which include the Remote Air Conditioning System.

What gives?

 

Thanks for that. It's interesting: the regular 2016 Prius brochure has a couple of shots showing the open hatch. The Prime: not so much. I don't blame them, but interesting none the less.

 

O/M discovers more product information, examples:
"Battery heater control" - only for Canada and Alaska.
"Battery cooler function"
Charging-linked Functions - starting page 126.

 

+1 on what LeeJay states above. I am as confused over those interfaces and subscriptions and possible fees as anyone.

I would hope that in another month all this becomes more clear as the early adopters pave the path and report back to the forum.

 

The Nav owners manual says:

Both of the following accounts are required for the services.
 Active Safety Connect account
 Active Toyota Entune App Suite account

So, when the three years of free Safety Connect runs out, you lose access to smartphone access unless you're either willing to pay for Safety Connect ($140 a year) or the dealer gives it to you for free during your purchase negotiation.

 

does anyone know if prime has the temporary 100% recirc button?