Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Another Autospeed aero article: methods for measuring aero drag

Daox · 02-13-2008, 12:32 PM

http://autospeed.com/cms/A_109741/article.html

They describe a different method for measuring aero drag. Not bad, but I wonder how accurate it is. Its hard to say if a MAF sensor's voltage is directly proportional to engine load. For example, say you get 1 volt @ 60 mph and you are using 10 hp to maintain that speed. Does .5 volts mean you are now using 5 hp to maintain speed? I wouldn't be too sure. But, it is a way to measure improvements.

02-13-2008, 12:32 PM	#1 (permalink)
Daox Moderator Join Date: Dec 2007 Location: Germantown, WI Posts: 3,070 Daox's Paseo - '97 Paseo Team Toyota 90 day: 67.16 mpg (US) Daox's Prius - '04 Prius 90 day: 52.66 mpg (US) Thanks: 9 Thanked 15 Times in 14 Posts	Another Autospeed aero article: methods for measuring aero drag http://autospeed.com/cms/A_109741/article.html They describe a different method for measuring aero drag. Not bad, but I wonder how accurate it is. Its hard to say if a MAF sensor's voltage is directly proportional to engine load. For example, say you get 1 volt @ 60 mph and you are using 10 hp to maintain that speed. Does .5 volts mean you are now using 5 hp to maintain speed? I wouldn't be too sure. But, it is a way to measure improvements. (Support Ecomodder.com & get rid of these annoying ads!) __________________ EcoRenovator.org - Efficient living and green home improvement Prius Build Thread Paseo Build Thread