Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Test: Alternator vs. no alternator = 10% MPG gain @ 70 km/h

MetroMPG · 11-28-2007, 09:49 AM

(Note: this thread originally written October 2006.)

Preliminary results

Speed 70 km/h / 43.5 mph

A: alternator belt ON - 71.16 mpg (US) - avg of 3 bi-dir runs (6 one-way runs)

B: alternator belt OFF - 78.08 mpg (US) - avg of 3 bi-dir runs

A: alternator belt ON - 70.2 mpg (US) - avg of 2 bi-dir runs

Or about a 10% improvement, sans alternator

11-28-2007, 09:49 AM	This thread is in the EcoModder Project Library \| #1 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,521 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 52.71 mpg (US) Even Fancier Metro - '14 Mitsubishi Mirage top spec 90 day: 70.75 mpg (US) Appliance car - '14 Mitsubishi Mirage ES (base) 90 day: 52.48 mpg (US) Thanks: 4,077 Thanked 6,964 Times in 3,606 Posts	Test: Alternator vs. no alternator = 10% MPG gain @ 70 km/h (Note: this thread originally written October 2006.) Preliminary results Speed 70 km/h / 43.5 mph A: alternator belt ON - 71.16 mpg (US) - avg of 3 bi-dir runs (6 one-way runs) B: alternator belt OFF - 78.08 mpg (US) - avg of 3 bi-dir runs A: alternator belt ON - 70.2 mpg (US) - avg of 2 bi-dir runs Or about a 10% improvement, sans alternator __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget