Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-06-2008, 10:29 AM   #1 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 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: 65.39 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
News: VW has sold a million DSG transmissions

Via ABG:

I had no idea this was so popular. VW has reportedly shipped its millionth "automated manual" double-clutch transmission.



This is somewhat significant news for the North American market because of the lack of willingness of drivers here to choose manual transmissions. An automated manual offers some of the efficiency benefits of manual transmissions without the losses of a typical automatic slushbox's torque converter.

And the speed freaks like them because the dual-clutch design actually allows them to accelerate faster than a normal manual transmission.

See also... VW's 7-speed DSG more efficient than traditional automatics; *also permits gliding*

__________________
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
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-06-2008, 11:12 AM   #2 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
I guess as long as I can control when the car shifts I'm fine. However, I do like my clutch for winter driving.
__________________
Current project: A better alternator delete
  Reply With Quote
Old 02-06-2008, 11:46 AM   #3 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 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: 65.39 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Spoken like a true hypermiler. For ultimate efficiency, you need to be able to row your own gears, including declutching whenever you like.

But for the average schmoe who insists on a slushbox, the DSG would be a nice improvement.
__________________
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
  Reply With Quote
Old 02-06-2008, 11:55 AM   #4 (permalink)
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
Thanks: 0
Thanked 22 Times in 18 Posts
I'd totally trade my standard shift for one

I foresee, for those already driving a standard transmission, there's going to be some friction when it comes to converting. Very similar to the ABS "I don't want it thinking for me" argument.... I like ABS because it can pulse faster than I ever could. I see the same argument - "I don't want the transmission thinking for me" - even though it can shift faster than any human can... 8ms per expected shift - holy smokes!

Lucky for N. America (at least the States) - a majority drive automatics
__________________
Cars have not created a new problem. They merely made more urgent the necessity to solve existing ones.
  Reply With Quote
Old 02-06-2008, 12:02 PM   #5 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 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: 65.39 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Good analogy about the brakes.... but shift speed isn't where you're going to save fuel. (I know you know that :P)

Unless the DSG type transmission has a hard core hypermiler on the programming staff, I seriously doubt it would be equipped with the type of logic that would let us do the types of things some of us do with a conventional manual tranny.

Bump starting a stopped engine on the fly, for example.
__________________
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
  Reply With Quote
Old 02-06-2008, 12:10 PM   #6 (permalink)
MechE
 
Join Date: Dec 2007
Location: Bay Area
Posts: 1,151

The Miata - '01 Mazda MX-5 Miata
Thanks: 0
Thanked 22 Times in 18 Posts
Quote:
Originally Posted by MetroMPG View Post
Good analogy about the brakes.... but shift speed isn't where you're going to save fuel. (I know you know that :P)

Unless the DSG type transmission has a hard core hypermiler on the programming staff, I seriously doubt it would be equipped with the type of logic that would let us do the types of things some of us do with a conventional manual tranny.

Bump starting a stopped engine on the fly, for example.
Oh yeah - totally... While writing that, I was thinking of my dad... He drives a stick because he puts down a lot of miles and carries a lot of crap in his car (work stuff). I'm sure there's plenty of other people out there, like my father, that drive a manual for the FE - but don't hypermile.

Bump starting is a very good point though - I didn't initially consider that

__________________
Cars have not created a new problem. They merely made more urgent the necessity to solve existing ones.
  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com