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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-24-2008, 02:13 PM   #11 (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
I got some training from krousdb at hybridfest on just this subject.

Correct me if I'm wrong, but use of N will also prevent the engine from spinning up (adding some mechanical drag) if speed goes over 42 mph in a downhill glide.

__________________
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 07-24-2008, 02:25 PM   #12 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: California
Posts: 73
Thanks: 0
Thanked 0 Times in 0 Posts
The Prius employs "engine braking" (actually, electric motor braking) if you simply take your foot off the gas pedal in doing a "pulse and glide", so the proper technique is to apply very slight pressure to the pedal. The slight pressure prevents the ICE from coming back on (it shuts off when you start coasting). You can use the display to show when you are using electric rather than gas power and you'll soon get the hang of it.

You can drive quite a distance on "electric only" at about 38 MPH using this technique. Above that speed, the ICE seems to kick in unless you are decelerating. Getting up to 38 MPH usually requires the ICE (I've been able to accelerate only to about 18 MPH on electric only). There is a "pulse and glide" technique for that kind of city driving ... you slowly start out, then when the ICE kicks in you apply more gas to get to about 40 MPH, then back off the gas with just slight pressure on the gas pedal and enjoy the gas-free ride.
  Reply With Quote
Old 07-24-2008, 02:59 PM   #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
My friend inflated to near-max psi today and I've been forwarding all the great info to him. He's hooked so hopefully he can pull some good numbers and approach 65 mpg (at avg 58 mpg right now). Keep the good info coming...I appreciate all the feedback for him to use!
  Reply With Quote
Old 07-24-2008, 03:07 PM   #14 (permalink)
Hypermiler
 
PaleMelanesian's Avatar
 
Join Date: Dec 2007
Location: Texas
Posts: 2,321

PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
Team Honda
Wagons
90 day: 44.06 mpg (US)
Thanks: 611
Thanked 433 Times in 283 Posts
If you watch the energy flow screen, you want to see NO arrows anywhere for a glide. This point is with very slight pressure on the gas pedal - just above completely off. You can then pop into neutral, or hold your foot just so to maintain the glide. If you just hit it into neutral without the no-arrows first, the engine will continue to idle. You need a scangauge to see this. The built-in display looks like it's off, but it's still running. That detail cost me probably 2 mpg at the WFEC last month.

There's a TON of information about driving the Prius over at Cleanmpg, more than I could ever mention here. I'd suggest going and looking there.

__________________



11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles

Last edited by PaleMelanesian; 07-24-2008 at 04:27 PM..
  Reply With Quote
Reply  Post New Thread




Similar Threads
Thread Thread Starter Forum Replies Last Post
Prius aero mods (undertrays, grille block, mirror delete...) krousdb Hybrids 46 08-02-2015 02:39 AM
Help me convince GF to pay $150 more to rent a Prius brickinthewind Hypermiling / EcoDriver's Ed 8 07-18-2008 02:44 PM
Prius wake turbulence Otto Aerodynamics 13 04-21-2008 11:44 AM
Autoblog Prius review: more evidence of the power of MPG instrumentation MetroMPG Instrumentation 6 01-02-2008 11:48 PM
Bullfrog Power wind farm owner dumps his Insight for a Prius MetroMPG General Efficiency Discussion 0 12-16-2007 11:50 PM



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