10-03-2015, 12:17 AM
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#1 (permalink)
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...beats walking...
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EPA paper estimate dyno Road Load pwr
Last edited by gone-ot; 10-03-2015 at 07:43 PM..
Reason: direct link to *.PDF file
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 Today
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Other popular topics in this forum...
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10-03-2015, 02:55 PM
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#2 (permalink)
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Master EcoModder
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paper
I printed off the whole thing for the home library.Thanks much! 
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10-03-2015, 05:01 PM
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#3 (permalink)
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...beats walking...
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Quote:
Originally Posted by aerohead
I printed off the whole thing for the home library.Thanks much! |
I saved a copy to HDD...I really liked all the references back to actual vehicles...and, this equation estimating "dyno" RLHP at 50 mph:
HP ≈ 0.253*(WT)^(0.456)
Last edited by gone-ot; 10-03-2015 at 08:13 PM..
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10-03-2015, 05:43 PM
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#4 (permalink)
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Master EcoModder
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actual
Yeah,and we get vehicle weight,how they did the rolling resistance,frontal areas,and drag coefficients to play with and compare to other sources if available. 
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10-03-2015, 07:04 PM
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#5 (permalink)
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Master EcoModder
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I tried to search on 'VW' and 'Volkswagen' but the page started jumping up and down and then a pop-up asked if I wanted to answer a survey, so I closed the page.
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10-03-2015, 07:41 PM
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#6 (permalink)
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...beats walking...
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Quote:
Originally Posted by freebeard
I tried to search on 'VW' and 'Volkswagen' but the page started jumping up and down and then a pop-up asked if I wanted to answer a survey, so I closed the page.
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It's under: EPA home / NSCEP / Document Display...but try this direct *.PDF link:
http://nepis.epa.gov/Exe/ZyPDF.cgi/9...y=9100WXMP.PDF |
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10-05-2015, 04:45 PM
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#7 (permalink)
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Master EcoModder
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specs
Quote:
Originally Posted by Old Tele man
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Wow! That took some dedication to put that all together.I'll bet that Rick is very appreciative of his 'network' for the data.I'd be pleased if my work was gonna help a bunch of gearheads with their projects.Good goin'!
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10-05-2015, 04:57 PM
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#8 (permalink)
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Master EcoModder
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EPA Cds
I went over the entire paper Sunday.I'm glad for the frontal areas,as they were provided by the manufacturers.
The actual road loads were given from EPA coastdown testing and seem realistic.
Some of the Cds I've never had,but of the ones I do have,compared to the EPA estimated Cds,the EPA's are high.
An example would be Corvette,which EPA assigns Cd 0.70,vs Cd 0.50,from GM.
As time permits,I'll do more comparisons.
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