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Knowledge Base Articles Discussion This is a discussion on Prius Stages of Operation & Operating Mode Availability -A Reference Aid within the Knowledge Base Articles Discussion forums, part of the Toyota Prius Forums category; See attached pdf from Excel for a 1-page reference to the warm-up stages and resulting operating mode availability. This should ...


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Old 02-26-2008, 03:13 PM   3 links from elsewhere to this Post. Click to view. #1
ksstathead
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Default Prius Stages of Operation & Operating Mode Availability -A Reference Aid

See attached pdf from Excel for a 1-page reference to the warm-up stages and resulting operating mode availability.

This should be especially helpful for those with short commutes for whom the warm-up penalty in fuel economy is so severe to overall mileage.

Please provide corrections and refinements and I'll try to incorporate when there is consensus. I have no Prius yet, so you cannot offend me, I'm just trying to summarize the existing 'literature.'

ksstathead

Ken@Japan's review is pending, but he provided the following history of the "Stages" work which came to us from Japan. It was lost when PriusChat emerged from Yahoo, as I understand it, and Daniel wrote his article as a way to preserve and advance our knowledge. I certainly want to credit not only Daniel, but also Ken@Japan, Master White-EPV, and others with Estima Hybrid Forum in Japan who have given us this information derived from dedicated experimentation and observation.

Quote:
Originally Posted by ken1784 View Post
Anyway, let me tell the history now...
In Japan, the first introduction of Toyota hybrid warming up stages was done sometime in 2003 by Estima Hybrid forum members led by Master White-EPV.
エスティマハイブリッド燃費バイブル

Master White-EPV got his 2004 Prius and he found Prius does the same thing.
He wrote his article...
白のEPVさんのプロフィール / プリウス オーナーズ リスト

I introduced the stages to Prius-2G Yahoo group in April 2004 in English...
Yahoo! Groups

Regards,
Ken@Japan
Keywords for searches: pulse glide warp stealth stages warm-up modes
Attached Files
File Type: pdf PriusStageModeReference051408.pdf (31.0 KB, 733 views)
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Last edited by ksstathead; 05-14-2008 at 06:04 PM. Reason: Note B re SHM availability in Stage 2 per douglas001001 comment#12
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Old 02-26-2008, 10:20 PM   #2
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Most cool and worthy of intense study.

Edward Tufte would approve. (High information density)
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Old 02-26-2008, 10:40 PM   #3
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Pretty nicely done.
I'd just add that in stage 3 a no arrows glide is possible, but you must be above 35mph (but below 42mph) to enter it.
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Old 02-27-2008, 10:59 AM   #4
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

thanks gentlemen.

I will continue to enhance the presentation. Information density will remain high. I added links to leading threads on the modes and other subjects addressed.

Keep those suggestions coming, folks.

Last edited by ksstathead; 02-27-2008 at 07:50 PM. Reason: several links added to pdf
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Old 02-27-2008, 11:47 AM   #5
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Nice. Is there room to add ", audible change in running"
after the ignition timing line for getting out of 1a? There
is one, that the non-scangauge-enabled can probably use to
discern that change esp. in warm weather with the windows open.
.
You probably want to fix "site's of members" to read properly,
"sites of members" or "members' sites".
.
You should likely give credit to Daniel's original writeup about
all this, which is mirrored at my site but NOT authored by me
other than a couple of minor additions at the bottom.
.
I *still* think it's very odd that one has to come to enough
of a stop or slowdown for that "idle check" to happen and
finally allow getting into stage 4. There are plenty of times
I've had to do a whole trip with no opportunity to stop and
let it happen, bangin' the EV switch for all the low speed glides.
.
I wonder if all this could be done in a graphical fashion that's
more visually immediate, such that Tufte would approve even more?
I'm not being able to come up with a good way right now..
.
_H*
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Old 02-27-2008, 12:14 PM   #6
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Quote:
Originally Posted by hobbit View Post
Nice. Is there room to add ", audible change in running"
after the ignition timing line for getting out of 1a? There
is one, that the non-scangauge-enabled can probably use to
discern that change esp. in warm weather with the windows open.
.
You probably want to fix "site's of members" to read properly,
"sites of members" or "members' sites".
.
You should likely give credit to Daniel's original writeup about
all this, which is mirrored at my site but NOT authored by me
other than a couple of minor additions at the bottom.
.
I *still* think it's very odd that one has to come to enough
of a stop or slowdown for that "idle check" to happen and
finally allow getting into stage 4. There are plenty of times
I've had to do a whole trip with no opportunity to stop and
let it happen, bangin' the EV switch for all the low speed glides.
.
I wonder if all this could be done in a graphical fashion that's
more visually immediate, such that Tufte would approve even more?
I'm not being able to come up with a good way right now..
.
_H*
Done, thanks. See the 2nd upload revision of today.

Doc Willie: You should see the napkin this project started on... We had a gubernatorial candidate a while back here in kansas whose mantra was learned on the family farm (re hay bales): 'stack 'em high and tight.' For now, I'm trying to keep this to a page more than trying to replace the stuff already out there.

Edit: Farm/hay bales was MY Dad. His deal was a family moving van service IRRC.

Last edited by ksstathead; 02-27-2008 at 03:37 PM. Reason: 2nd revision of 2/27/08 done + density response
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Old 02-27-2008, 11:54 PM   #7
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Thank you for the upload!
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Old 02-28-2008, 04:59 AM   #8
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

I nominate you for the Oscar for "Best Prius Article by a non-owner" award!
Really nice concise readable summary article there.
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Old 02-28-2008, 07:54 AM   #9
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Hello ksstathead et al,

Very nice article!
Would like to comment some, but I'm busy now. Let me do it later.

Anyway, let me tell the history now...
In Japan, the first introduction of Toyota hybrid warming up stages was done sometime in 2003 by Estima Hybrid forum members led by Master White-EPV(his handle).
エスティマハイブリッド燃費バイブル

Master White-EPV got his 2004 Prius and he found Prius does the same thing.
He wrote his article...
白のEPVさんのプロフィール / プリウス オーナーズ リスト

I introduced the stages to Prius-2G Yahoo group in April 2004 in English...
Yahoo! Groups

Regards,
Ken@Japan

Last edited by ken1784; 02-28-2008 at 10:20 AM.
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Old 03-10-2008, 04:41 PM   #10
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Default Re: Prius Stages of Operation & Operating Mode Availability -A Reference Aid

Hi ksstathead and all,

Excellent piece of work; especially in following Winston Churchill's dictum "Pray may I have, on one sheet of paper" - your summary of the details.

The knowledge base on this site is incredible. I have learned more about my Prius in the 5 months I've had it than any other car I have ever owned.

Just one comment with respect to the Hybrid Paradox. While its true that all the car's energy originates from what's in the gas tank, the regenerative electrical energy does re-capture some of the kinetic energy that the gas provides, although with some inherent inefficiency, it is true. To the extent that it is not lost as heat in the brakes, that at least is a net gain.

Time to start implementing your work, no?!
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