View Single Post
Old 06-16-2013, 04:26 PM   #7 (permalink)
gone-ot
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
That is the EPA standardized formula and it's what each manufacturer uses to establish the dynamometer Test Load HP coefficient they derive FROM their "road load" coastdown tests.

However, that EPA equation is (to my knowledge) ONLY valid for 50 MPH since it is actually published as (EPA test speed is 50 mph):

TLHP = (a + 50·b + 2500·c)/7.5

Last edited by gone-ot; 06-17-2013 at 06:59 PM..
  Reply With Quote