Go Back   EcoModder Forum > EcoModding > Hybrids
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-14-2008, 06:02 PM   #21 (permalink)
Legend in my own mind
 
trikkonceptz's Avatar
 
Join Date: Apr 2008
Location: Homestead, Fl.
Posts: 927

Evil Pumpkin - '08 Scion xD RS 1.0 #1633
90 day: 35.45 mpg (US)

Silent Silver Killer - '10 Honda Insight EX
90 day: 51.5 mpg (US)
Thanks: 2
Thanked 14 Times in 13 Posts
Don't forget that you can design the trailer with 2 recievers and use a single wheel with suspension that swivels. That would eliminate the risk of jacknifing because the trailer simply becomes an extension of the vehicle, which would allow you to theoretically build a removeable boat tail for any vehicle.

That is exactly what I plan to do to the vibe, build it a portable boat tail for better hwy FE.

__________________
Thx NoCO2; "The biggest FE mod you can make is to adjust the nut behind the wheel"

I am a precisional instrument of speed and aeromatics
If your knees bent in the opposite direction......what would a chair look like???





  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-14-2008, 07:38 PM   #22 (permalink)
Master EcoModder
 
ttoyoda's Avatar
 
Join Date: May 2008
Location: boston ma
Posts: 381
Thanks: 0
Thanked 5 Times in 5 Posts
Quote:
Don't forget that you can design the trailer with 2 recievers and use a single wheel with suspension that swivels.
In case you have not seen this there are about a million pictures of them on this site to give you ideas.
http://www.singlewheel.com/
Funny how everyone had them and now you never see one.
  Reply With Quote
Old 06-14-2008, 07:41 PM   #23 (permalink)
Master EcoModder
 
ttoyoda's Avatar
 
Join Date: May 2008
Location: boston ma
Posts: 381
Thanks: 0
Thanked 5 Times in 5 Posts
Quote:
I attempted a motorcycle-based,one-wheel trailer for the CRX
aerohead,
That sounds really cool. Do you have a writeup about it somewhere?
  Reply With Quote
Old 06-20-2008, 11:04 PM   #24 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,530

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 Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,978 Times in 3,613 Posts
Updated pictures of the electric pusher trailer project:
www.flickr.com/mbarkley
__________________
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 06-23-2008, 03:36 PM   #25 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: NorCal
Posts: 451
Thanks: 1
Thanked 40 Times in 26 Posts
I really like the modular and retro-fit features of the pusher trailer. The downside to just adding an EV trailer to an existing gas powered sedan would be around town driving while towing a trailer... the post office, the mall, Starbucks and strip mall parking lots near downtown aren't very 'trailer-friendly'.

On the other hand, an EV pushed by Diesel powered APU trailer sounds more appealing the more I think about it. If you work 10 miles away, use the EV wo/trailer. If you are going out of town, headed out on a long trip, hitch up the APU trailer of choice, have it push you down the hiway. When you get to your destination, hotel, temp job site, aunt Madilda's, un-hitch the APU trailer, chain it to the nearest lightpole and use EV power locally.

Train locomotives generate electricy via big Diesel engines that drive electric motors to propel the train down the tracks. But the torque loads are huge, transmitting mechanical power alone through gears has huge losses so the generator makes sense in that case. I am not sure how efficient an EV car with a Diesel electric generator trailer would be, by nature is sounds kind of lossy.

Either way, the cool thing with the pusher trailer or generator trailer is you aren't tied down to any one source of propulsion. Mix-n-match your auxillary power unit, you can own several... if Diesel goes out of fashion, switch to a gasoline APU while you are retro-fitting your Diesel APU to run on french fry grease or biomass fuel. Gasoline lines too long? Switch over to a compressed natural gas powered APU (CNG) that you Phill up through your household NG outlet (Google "Phill CNG"). Will some sort of fuel cell technology take over in 3 years? Hydrogen? Build a pusher trailer around that.
  Reply With Quote
Old 06-23-2008, 05:21 PM   #26 (permalink)
Deadly Efficient
 
Tango Charlie's Avatar
 
Join Date: Jun 2008
Location: Goshen, Indiana
Posts: 1,234

Olivia - '03 Pontiac Vibe base
90 day: 36.01 mpg (US)

R2-D2 - '00 Honda Insight
90 day: 58.81 mpg (US)
Thanks: 134
Thanked 176 Times in 91 Posts
Quote:
Originally Posted by metromizer View Post
Train locomotives generate electricy via big Diesel engines that drive electric motors to propel the train down the tracks. But the torque loads are huge, transmitting mechanical power alone through gears has huge losses so the generator makes sense in that case. I am not sure how efficient an EV car with a Diesel electric generator trailer would be, by nature is sounds kind of lossy.
That's the train of thought (sorry...) I had. What's the diesel/electric locomotive's 'reason for being' ? My guess is torque. It would take a whopper of a torque converter on a diesel engine to move a train!
I agree, the diesel/electric concept does sound 'lossy' (hey, it's a new word!) But I would like to see some data...
__________________
-Terry
  Reply With Quote
Old 06-24-2008, 06:56 PM   #27 (permalink)
EcoModding Lurker
 
Join Date: Apr 2008
Location: Regina, Saskatchewan
Posts: 73
Thanks: 0
Thanked 0 Times in 0 Posts
It's also the basic premise of GM's Volt (except gas instead of diesel). You have an electric drive, battery pack and generator that only runs once the batteries drop down to a certain level.

I think the possibility of more train-like transportation is a definite possibility in the future. Imagine taking a modular approach to your standard car. Have a very aerodynamic powered front 'car' towing a single occupant passenger 'car' with a fly-by-wire control scheme. Add passenger 'cars' as you need them, and hook up with others for power-sharing and the aerodynamic benefit. Add a battery car with solar collector for range extending.
  Reply With Quote
Old 06-24-2008, 07:02 PM   #28 (permalink)
EcoModding Lurker
 
Join Date: Apr 2008
Location: Colchester, CT
Posts: 38

POS - '97 Ford Aspire
90 day: 47 mpg (US)
Thanks: 0
Thanked 1 Time in 1 Post
going along w/ the idea of being able to reduce load on lg trucks: the trailer could be used to suppliment durring acceleration and big hills. for steady-state, the trailer's motor would shut off. put regenerative braking, and you''ve got a good trailer brake! Most of the power requirments for towing come from acceleration and hill climbing.
__________________
  Reply With Quote
Old 06-29-2008, 12:57 PM   #29 (permalink)
amateur mech. engineer
 
Join Date: May 2008
Location: New York City
Posts: 112

Sporty Accord - '88 Honda Accord LX-i
90 day: 23.25 mpg (US)

Dad's Camry - '01 Toyota Camry CE
90 day: 22.81 mpg (US)

Artie's Camry - '98 Toyota Camry
90 day: 37.3 mpg (US)
Thanks: 0
Thanked 17 Times in 4 Posts
Quote:
Originally Posted by Tango Charlie View Post
I can see that it would have the greatest advantage in town, but why not optimize it for cruising on the highway?
If the tow vehicle has an engine that is too big for good fuel economy, then it may still make sense to run a smaller engine on the trailer and turn off the tow vehicle's engine.

If the tow vehicle has an efficient engine, then I would try adding a steam engine to the trailer to use the waste heat from the tow vehicle's exhaust.
  Reply With Quote
Old 06-29-2008, 01:34 PM   #30 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Motor City
Posts: 89
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by Andyman View Post
If the tow vehicle has an engine that is too big for good fuel economy, then it may still make sense to run a smaller engine on the trailer and turn off the tow vehicle's engine.

If the tow vehicle has an efficient engine, then I would try adding a steam engine to the trailer to use the waste heat from the tow vehicle's exhaust.
Such would be a perfect application for a Stirling Engine:
Stirling engine - Wikipedia, the free encyclopedia

They work well with low temperature differences, so remaining exhaust heat would could be converted to motive force. It would work especially well on long cruises.

  Reply With Quote
Reply  Post New Thread




Similar Threads
Thread Thread Starter Forum Replies Last Post
Electric car conversion: Project ForkenSwift MetroMPG Fossil Fuel Free 1049 Yesterday 04:17 PM
Win $100.00 in Free Gas! Design Contest: Ecomod my Ride XFi EcoModding Central 127 02-17-2011 01:07 AM
Guess: how many "labour hours" to make a conventional lead acid car battery? MetroMPG The Lounge 16 10-20-2008 04:57 AM
Active grill block idea holypaulie Aerodynamics 17 10-13-2008 10:31 AM
New EV idea: Inflatable car??? link larrydag Fossil Fuel Free 2 06-03-2008 12:40 AM



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