Oak Ridge National Lab Prius Evaluation

**efusco** · 12-12-2004, 10:37 AM

This is a very thorough and detailed article explaining the function of the hybrid system of the Prius...43 pages, but quite impressive.

jchu · 12-12-2004, 10:52 AM

Evan,
Don't know if it me or not but couldn't get the link to work.

CHART · 12-12-2004, 11:00 AM

I wonder what the significance of the "alarming" sounding sentence in section 5.1 is:

"Component-level testing at ORNL revealed that gearbox related friction losses were found to be
significant."

Not looking for a conspiracy theory here. I actually don't understand what they mean

ops:

IsrAmeriPrius · 12-12-2004, 11:00 AM

Quote:

Don't know if it me or not but couldn't get the link to work.

It's a fairly large PDF file. It takes a couple of minutes to download and open Adobe Reader, even with a DSL connection.

jchu · 12-12-2004, 11:08 AM

The thing is I get a blank screen, the lower left hand corner says done, and the modem icon doesn't show any info being transferred back and forth. Having said that I wonder if it is me as you seem to have had success.

IsrAmeriPrius · 12-12-2004, 11:21 AM

Quote:

The thing is I get a blank screen, the lower left hand corner says done, and the modem icon doesn't show any info being transferred back and forth. Having said that I wonder if it is me as you seem to have had success.

Jon,

I, too, experienced a blank screen for a few minutes and the browser window appeared to be frozen.

Since I was browsing other websites in separate windows, while I was waiting, I was not paying attention to the modem lights or the ZoneAlarm icon for traffic, as I was waiting.

Try waiting for a few minutes.

Here is the URL as shown on my computer:

http://priuschat.com/forums/files/oakridge...elabsreport.pdf

IsrAmeriPrius · 12-12-2004, 11:24 AM

Here is an HTML version of the same document, thanks to Google:

http://216.239.57.104/search?q=cache:nFtIE...ota+Prius&hl=en

And another URL for the original PDF version:

http://www.ornl.gov/~webworks/cppr/y2001/r.../rpt/121813.pdf

**efusco** · 12-12-2004, 11:34 AM

Dunno guys, seems to work fine for me.

**efusco** · 12-12-2004, 11:36 AM

Quote:

I wonder what the significance of the "alarming" sounding sentence in section 5.1 is:

"Component-level testing at ORNL revealed that gearbox related friction losses were found to be
significant."

Not looking for a conspiracy theory here. I actually don't understand what they mean

ops:

I don't know if it's so much 'ominous' as maybe a noteable area for potential future improvement. There are lot of gears and thus a lot of contact and friction which will, obviously, result in losses. If an improved PSD (power split device) could be designed that could 1)Handle the torque and 2)lower frictional losses, you could have a marked improvement in efficiency.

V8Cobrakid · 12-12-2004, 12:09 PM

i have to downloa any pdf file.. the service pack 2 of xp has caused nothing but problems for me.

12-12-2004, 10:37 AM	#1
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 12,942 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 21	Oak Ridge National Lab Prius Evaluation This is a very thorough and detailed article explaining the function of the hybrid system of the Prius...43 pages, but quite impressive.

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12-12-2004, 10:52 AM	#2
jchu Join Date: Mar 2004 Location: Nampa, ID Posts: 1,063 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Evan, Don't know if it me or not but couldn't get the link to work.

12-12-2004, 11:00 AM	#3
CHART Join Date: Dec 2003 Location: Mount Airy Maryland, USA Posts: 184 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I wonder what the significance of the "alarming" sounding sentence in section 5.1 is: "Component-level testing at ORNL revealed that gearbox related friction losses were found to be significant." Not looking for a conspiracy theory here. I actually don't understand what they mean ops:

12-12-2004, 11:08 AM	#5
jchu Join Date: Mar 2004 Location: Nampa, ID Posts: 1,063 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	The thing is I get a blank screen, the lower left hand corner says done, and the modem icon doesn't show any info being transferred back and forth. Having said that I wonder if it is me as you seem to have had success.

12-12-2004, 11:24 AM	#7
IsrAmeriPrius Progressive Member Join Date: May 2004 Location: Southern California Posts: 4,335 My Car: 2005 Prius Package: #6 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Here is an HTML version of the same document, thanks to Google: http://216.239.57.104/search?q=cache:nFtIE...ota+Prius&hl=en And another URL for the original PDF version: http://www.ornl.gov/~webworks/cppr/y2001/r.../rpt/121813.pdf

12-12-2004, 11:34 AM	#8
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 12,942 My Car: 2004 Prius Package: #9 Nominated 1 Time in 1 Post TOTM Awards: 0 Friends: 21	Dunno guys, seems to work fine for me.

12-12-2004, 12:09 PM	#10
V8Cobrakid some guy... Join Date: Jun 2004 Location: San Jose, CA Posts: 2,439 My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 4	i have to downloa any pdf file.. the service pack 2 of xp has caused nothing but problems for me.