Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-16-2008, 08:35 PM   #1 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,653

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

MPGiata - '90 Mazda Miata
90 day: 53.78 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,399
Thanked 6,211 Times in 3,218 Posts
Tesla Roadster a power hog?

Tesla founder & former exec Martin Eberhard has posted on his blog about how shocked he was to discover how much power his car wasted sitting idle (battery coolant pump running constantly):



Quote:
Whoa! The car consumed a whopping 14 kilowatt-hours in four days, just sitting there! Doing the math, the pump draws about 146 watts all day long, all night long, every day. This works out to 1,278 kWh per year. To put this in perspective, a really nice 26-cubic foot side-by-side refrigerator with an ice maker uses only 618 kWh per year, so this pump is the energy-equivalent of two huge refrigerators!
The car basically wastes about 20% of its battery capacity (and lifecycle) circulating coolant. Note this is for HIS particular driving patterns & style; YMMV.

He's also been tracking his total efficiency, at the wall: 439 watt hours/mile

That's right: turn on four (point 39) 100 watt light bulbs for an hour, or drive 1 mile. Your choice.

This includes the "idle wastefulness" that he discovered, and is frankly not very good.

__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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 10-16-2008, 09:40 PM   #2 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,121

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)
Thanks: 2,438
Thanked 2,489 Times in 1,501 Posts
Yikes, looks like someone needs some lessons in ecodriving!
__________________
Current project: A better alternator delete
  Reply With Quote
Old 10-16-2008, 09:59 PM   #3 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,653

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

MPGiata - '90 Mazda Miata
90 day: 53.78 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,399
Thanked 6,211 Times in 3,218 Posts
Likely. But then that'd be like trying to teach a Ferarri driver to ecodrive. Probably ain't gonna happen.

For comparison, the ForkenSwift's average over winter & summer is 312 watt hours / mile (at the wall).

Its built-in "efficiency hit" comes from having worn out batteries. If they were newer, it'd be better than that.
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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 10-16-2008, 10:25 PM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,653

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

MPGiata - '90 Mazda Miata
90 day: 53.78 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,399
Thanked 6,211 Times in 3,218 Posts
More perspective: Eberhard's lousy 439 Wh/mile is still 76 MPG equivalent. Compared to the Ferarri, OK, not too shabby.
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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 10-17-2008, 11:34 AM   #5 (permalink)
EcoModding Lurker
 
Join Date: Oct 2008
Location: USA
Posts: 31
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by MetroMPG View Post
More perspective: Eberhard's lousy 439 Wh/mile is still 76 MPG equivalent. Compared to the Ferarri, OK, not too shabby.
Under what equivalency? I get 83 mpg for pump energy versus plug energy. However, it only ranks 57 mpg in terms of price equivalency. I get a measly 33 mpg in CO2 equivalency, using the average US power mix.
  Reply With Quote
Old 10-17-2008, 12:25 PM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,653

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

MPGiata - '90 Mazda Miata
90 day: 53.78 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,399
Thanked 6,211 Times in 3,218 Posts
Energy conversions used:

- 3412 BTU per kWh
- 114,500 BTU per gallon (US)
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
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 10-18-2008, 02:59 PM   #7 (permalink)
EcoModding Lurker
 
Join Date: Oct 2008
Location: USA
Posts: 31
Thanks: 0
Thanked 1 Time in 1 Post
Ok; I was using 34.8 MJ/l, apparently from Oak Ridge National Lab, via Wikipedia. 114,500 BTU/gallon is 31.9 MJ/l, which explains why our numbers differed.

I really hope they're going to bring their efficiency up. That 33 mpg CO2 number could be quite damaging to its eco-reputation were it widely known. The trickle-down effect the smaller EV players wouldn't help matters either, even if their efficiencies were higher.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Converting power steering to electric power steering Daox EcoModding Central 54 01-17-2017 06:16 PM
Why We Have No Wind or Solar Power SuperTrooper General Efficiency Discussion 220 07-20-2011 10:37 PM
Nuclear Power ... trikkonceptz Fossil Fuel Free 13 06-16-2008 07:51 PM
Video: Tesla Roadster on jaylenosgarage.com MetroMPG Fossil Fuel Free 2 03-19-2008 10:18 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com