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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-13-2009, 12:37 PM   #11 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,882

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,403
Thanked 2,900 Times in 1,818 Posts
Hiya,

Really cool stuff! What is the size of the battery pack, and how long does it take to charge? What is the (average) range on the full EV mode, and in hybrid mode? And what is the MPG running in hybrid mode?

I think we need to use a hybrid rating in place of "average" MPG: say like 45 miles in EV mode + 60mpg thereafter (or ~500 miles on 11 gallons of gasoline, or whatever).

__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-13-2009, 12:46 PM   #12 (permalink)
EV test pilot
 
bennelson's Avatar
 
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
Posts: 4,435

Electric Cycle - '81 Kawasaki KZ440
90 day: 334.6 mpg (US)

S10 - '95 Chevy S10
90 day: 30.48 mpg (US)

Electro-Metro - '96 Ben Nelson's "Electro-Metro"
90 day: 129.81 mpg (US)

The Wife's Car - Plug-in Prius - '04 Toyota Prius
90 day: 78.16 mpg (US)
Thanks: 17
Thanked 658 Times in 384 Posts
Quote:
Originally Posted by NeilBlanchard View Post
I think we need to use a hybrid rating in place of "average" MPG: say like 45 miles in EV mode + 60mpg thereafter (or ~500 miles on 11 gallons of gasoline, or whatever).
I agree, but that's for PLUG-IN HIBRIDS only. Your typical hybrids in America have no "electric only" capabilities. Of course this thread is about a plug-in conversion.

The car that this high-speed upgrade was done on is a Plug-In Conversions car.
See Frequently Asked Questions for general specs on their cars. Of course the answer to the "Can I drive the car without gas?" is changed by this new upgrade.
__________________


300mpg.org Learn how to BUILD YOUR OWN ELECTRIC CAR CHEAP
My YouTube Videos
  Reply With Quote
Old 06-14-2009, 12:28 AM   #13 (permalink)
Master EcoModder
 
Matt Herring's Avatar
 
Join Date: Jun 2008
Location: North Andover, MA
Posts: 857

Bone's 2010 Prius - '10 Toyota Prius Black
90 day: 56.78 mpg (US)
Thanks: 5
Thanked 23 Times in 19 Posts
Quote:
Originally Posted by NeilBlanchard View Post
Hiya,

Really cool stuff! What is the size of the battery pack, and how long does it take to charge? What is the (average) range on the full EV mode, and in hybrid mode? And what is the MPG running in hybrid mode?

I think we need to use a hybrid rating in place of "average" MPG: say like 45 miles in EV mode + 60mpg thereafter (or ~500 miles on 11 gallons of gasoline, or whatever).
The size of the pack is 6 kwh and it replaces the existing 1.6 kwh pack...not sure on recharge time.
  Reply With Quote
Old 06-14-2009, 01:49 PM   #14 (permalink)
Master EcoModder
 
Matt Herring's Avatar
 
Join Date: Jun 2008
Location: North Andover, MA
Posts: 857

Bone's 2010 Prius - '10 Toyota Prius Black
90 day: 56.78 mpg (US)
Thanks: 5
Thanked 23 Times in 19 Posts
Quote:
Originally Posted by bennelson View Post
Matt, half of what you said is over my head. I am not much of a Prius guy... but I AM learning.
Ben,

An easy way to think of the Prius system is that it operates in 3 parts (the MG1, the MG2 and the ICE). All 3 work simultaneously with each other. When using ICE all 3 "parts" of the engine are spinning and working together. When MG1 spins forward, MG2 spins backwards...always on a counterbalance.

When in EV mode the rpm in the engine drops to 0 and the car runs off the battery alone until 42 mph and higher is reached and EV mode is replaced with ICE operation (MG1 and MG2 are not spinning under 42 mph in EV mode). This is where the "mystery" of the Ewert system leaves alot of questions to be answered. When in EV mode, around/near 62 mph the MG1 and MG2 reach their max load and become dangerously close to overspinning...at 70 mph I would expect severe negative impact on the MG1 and MG2.

Often, I will EV mode or ICE up to 41 mph, put it in neutral and coast down a hill "in EV mode"...this gives me the benefit of 0 rpm coast vs. ICE-on neutral coast (9999 mpg vs. 120 mpg on my SGII). On big downhills, I could leave it in EV mode and coast past 60 mph but I would also threaten the MG1 and MG2 by doing this. In these cases I will EV neutral coast up to about 55 mph and then either light brake or go into ICE to use engine braking to stay under 60 mph and overspin.

So, with the Ewert system at 70 mph in EV mode there has to be some "safeguard" to the system (I hope) that protects the MG1, MG2 and ICE from overspinning. Maybe it shuts the whole system down to 0 rpm and runs it off the larger battery. But, because the same Prius inverter is used to run the new 6kwh pack that ran the 1 kwh stock pack...running 110-140 amps at those speeds for the length of time they are doing it (10-15 minutes) would bring inverter temps beyond safe operation.

I've watched all the videos and read as much as I can find on it...but haven't found answers to these questions yet.
  Reply With Quote
Old 10-15-2009, 08:41 AM   #15 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,037

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

MPGiata - '90 Mazda Miata
90 day: 53.56 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: 58.34 mpg (US)
Thanks: 3,682
Thanked 6,494 Times in 3,364 Posts
FYI, Bill Moore, editor of EVworld.com has posted an article about converting his Prius into a PHEV using the Ewert brothers' approach which permits the car to be driven at freeway speeds in EV mode.

EV WORLD: The Conversion of 'LIVN GRN'

Reading the article, I think it's safe to say this is still very much "beta".

__________________
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
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aeromodding in the 1930's: 38 mpg, 70 mph Model T MetroMPG Aerodynamics 42 05-29-2012 12:08 PM
How to get instant fuel consumption from Megasquirt TELVM Instrumentation 11 08-29-2011 02:47 PM
2009 Prius Base - $19k Matt Herring Hybrids 283 12-29-2009 03:12 PM
2010 Prius unveiled: Cd 0.25, 50 mpg EPA combined, EV mode MetroMPG Hybrids 56 07-26-2009 03:48 PM
EV Mode Coasting - go to Neutral? cephraim General Efficiency Discussion 0 08-29-2008 10:21 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com