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Old 12-31-2009, 12:00 PM   #1 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

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: 60.16 mpg (US)
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ZF ecomods a transmission: 8 spd auto, EOC-able, multiple input options, fewer parts

Found this Car & Driver article interesting:



It's an interesting modular approach to making one transmission case that can be customized with multiple options, including input from (A) a "regular" torque converter, (B) an electric motor (for hybrid applications) or (C) a multiple clutch pack for increased efficiency & shifting speed (better acceleration).

Quote:
ZF says the 8HP is six percent more *efficient than the outgoing sixer and nearly as efficient as a dual-clutch automated manual, which ZF also produces. However, the eight-speed is roughly 20 percent cheaper and retains the smooth, torque-converter starts to which U.S. buyers have become accustomed.
And interesting for those who like to practise engine-off coasting with automatic transmissions...

Quote:
Furthermore, the 8HP has a system to maintain hydraulic pressure even when the engine isn’t running and is therefore the first automatic that’s compatible with stop-start operation—good for 11 percent better fuel efficiency, says ZF.
More info at: ZF?s 8-Speed Automatic Transmission - Tech Dept. - Auto Reviews - Car and Driver

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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
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