Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - SUGGESTION: Additions to aerodynamic, rolling resistance, fuel economy calculator.

sheepdog 44 · 12-23-2013, 06:05 PM

Another thing to add which is semi useful. You can figure out the exact negative grade that will maintain the constant speed of your vehicle while coasting. This would be the ideal negative grade to look for in a route so you could EOC in Neutral without gaining excessive speed, or slowly loosing speed.

i = ((krMs) + (kaAsv2d)) / (gMs)

Please add two columns for this. One that neglects transmission efficiency for EOC in Neutral. The other that accounts for transmission efficiency. The second would only be indicative without knowing what your engine pumping losses are.

It would be a great feature to have and would save me and hopefully others a lot of time using the calculator in google!

12-23-2013, 06:05 PM	#2 (permalink)
sheepdog 44 . Join Date: Dec 2011 Location: Salt Lake valley Utah Posts: 923 Thanks: 114 Thanked 397 Times in 224 Posts	Another thing to add which is semi useful. You can figure out the exact negative grade that will maintain the constant speed of your vehicle while coasting. This would be the ideal negative grade to look for in a route so you could EOC in Neutral without gaining excessive speed, or slowly loosing speed. i = ((krMs) + (kaAsv2d)) / (gMs) Please add two columns for this. One that neglects transmission efficiency for EOC in Neutral. The other that accounts for transmission efficiency. The second would only be indicative without knowing what your engine pumping losses are. It would be a great feature to have and would save me and hopefully others a lot of time using the calculator in google! __________________ I try to be helpful. I'm not an expert.