View Single Post
Old 09-23-2008, 12:18 PM   #708 (permalink)
wyatt
EcoModder
 
Join Date: Jul 2008
Location: North Central Alabama
Posts: 572

Big Salsa - '04 Toyota Sienna LE

Silver - '10 Toyota Prius III
Thanks: 110
Thanked 123 Times in 71 Posts
If we are looking at doing a second loadable program that would do a coastdown to calculate the Cd, Crr (and Cskin?), would it be possible to include the engine's efficiency as an output?
Variables needed:
  • Cd
  • Crr
  • (Cskin if we calculate it)
  • Area
  • mass
We can calculate power and use a standard number for gasoline (or diesel) BTU/gallon, and we can get efficiency. I think it would be useful for people that want to do P&G to know where their engine is most efficient. They can then verify that with MPG.
__________________
  Reply With Quote