Go Back   EcoModder Forum > EcoModding > DIY / How-to
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 12-25-2013, 02:38 PM   #31 (permalink)
40-60-40 MPH P&G
 
echo-francis's Avatar
 
Join Date: Feb 2011
Location: laval, QC
Posts: 276

Echo-P&G - '05 Toyota Echo base
Team Toyota
90 day: 82.76 mpg (US)
Thanks: 45
Thanked 110 Times in 57 Posts
I have 6 2.7v 650f capacitor = 16.2v 108farad

Maxwell 650 Farad Ultracapacitor Super Capacitor Car Stereo Supercapacitor Qty 6 | eBay

__________________
Best Tank (1557.2 Km): 2.57 LHK (91.63 MPG (US) )
Best Highway Trip (~36.8 Km): 2.16 LHK (109 MPG (US) )
Best Commute Trip avg (73.8 Km ): 2.33 LHK (101 MPG (US) )
Echo-Troll Modding Thread

I know i dont have a very good write-up
no lean-burn? no good gear ratio? p&g is the answer
MPG=1 TIME=0
  Reply With Quote
The Following User Says Thank You to echo-francis For This Useful Post:
redpoint5 (12-26-2013)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 12-25-2013, 04:57 PM   #32 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,191
Thanks: 179
Thanked 1,521 Times in 1,122 Posts
I'm not sure, but I believe this equation is what you're asking about (from Wiki):



...it lets you equate capacitor wattage to battery wattage...but not Watt·Hours, unfortunately.
  Reply With Quote
Old 12-26-2013, 10:34 AM   #33 (permalink)
Southern Squidbillie
 
Join Date: Aug 2012
Location: Heart of Dixie
Posts: 97
Thanks: 50
Thanked 25 Times in 21 Posts
0.5xCxV^2 = 3.9 watt-hours for the 16.2 volts 108 farad device.
  Reply With Quote
Old 12-26-2013, 07:17 PM   #34 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: USA
Posts: 2,643
Thanks: 1,503
Thanked 276 Times in 226 Posts
Your prius is like the insight. It uses a dc to dc converter to charge the battery, so having a cap across it helps to add a buffer so the circuit isnt on all the time, but cycles off and on giving is more reserve or the hybrid system and better mpg.

Quote:
Originally Posted by P-hack View Post
How do you evaluate the risk/reward here? At night I run the lights and everything with the engine off, and need to be able to start reliably if I am at a stop. As well winter is coming. The extra battery weight helps me glide a little farther/faster too. How does this ever pay for itself and how often does it leave an EOCer (or regular user) stranded in the process?
  Reply With Quote
Old 12-26-2013, 08:17 PM   #35 (permalink)
Master EcoModder
 
P-hack's Avatar
 
Join Date: Oct 2012
Location: USA
Posts: 1,408

awesomer - '04 Toyota prius
Thanks: 102
Thanked 249 Times in 201 Posts
I did borrow the cigarette lighter voltmeter idea from the vid The little battery in my civic runs down faster than I'm used to, so hopefully I won't be caught dead at the green light.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com