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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-06-2008, 07:23 PM   #1 (permalink)
Renaissance Man
 
Formula413's Avatar
 
Join Date: Jan 2008
Location: In the Northeast dreaming of the Southwest
Posts: 596

Aegean C - '17 Honda Civic LX
90 day: 39.42 mpg (US)
Thanks: 20
Thanked 31 Times in 24 Posts
Gas mileage training aid

I saw a little device in a video recently that teaches the driver how to save fuel. It's a little box with LEDs that mounts on the dash, and the LEDs light up red if the driver accelerates or decelerates too quickly, thus teaching the driver how to drive more efficiently. I've searched and searched and can't find this thing anywhere, has anyone seen this thing? I would like to suggest this to people I know who are pretty much clueless as to how to drive efficiently, I think it would prove very helpful.

__________________

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-07-2008, 12:25 AM   #2 (permalink)
Dartmouth 2010
 
SVOboy's Avatar
 
Join Date: Nov 2007
Location: Hanover, NH
Posts: 6,447

Vegan Powa! - '91 Honda CRX DX
Team Honda
90 day: 66.52 mpg (US)
Thanks: 92
Thanked 119 Times in 87 Posts
Send a message via AIM to SVOboy Send a message via MSN to SVOboy Send a message via Yahoo to SVOboy
I've never seen it, but seems like it would be easy enough to make.
  Reply With Quote
Old 07-07-2008, 11:20 AM   #3 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: Michigan
Posts: 76
Thanks: 0
Thanked 0 Times in 0 Posts
How in the world could it know what the optimal acceleration rate is for a specific car? It might do more harm than good.
  Reply With Quote
Old 07-07-2008, 11:38 AM   #4 (permalink)
Hi-Tech Redneck
 
Johnny Mullet's Avatar
 
Join Date: May 2008
Location: Ashtabula, Ohio
Posts: 1,436
Thanks: 6
Thanked 48 Times in 41 Posts
Send a message via AIM to Johnny Mullet Send a message via MSN to Johnny Mullet
Unless it works similar to a vacuum gauge.
__________________

GeoMetroforum.com - got mpg?
  Reply With Quote
Old 07-07-2008, 12:34 PM   #5 (permalink)
X-Frenchy: very
 
groar's Avatar
 
Join Date: Jun 2008
Location: Toulouse, France
Posts: 595

scenic - '01 renault scenic
90 day: 43.09 mpg (US)

megane - '97 renault megane classic
Diesel
90 day: 72.53 mpg (US)

dennisius - '06 Toyota Prius
Team Toyota
90 day: 69.27 mpg (US)
Thanks: 9
Thanked 34 Times in 23 Posts
I think I saw it through a link someone posted recently.

I bet for a GPS receiver hardcoded with generic values. The GPS receiver gives not only the position, but also the speed and the acceleration.

A few weeks to design, a few dollars to build and you can sell 50. Will pay for itself rather quickly even if people save only 10%.

Far less powerful than a SG, but will be enough to a lot of people. With a SG you have to analyze numbers in real-time to know what you have to change... People do prefer something telling them what to do, or what they are doing bad.

Even if you only say people when they are accelerating too quickly or driving too fast, this is enough because that box is looking at it all the time. It's still hard to me to have always good accelerations and good speed.

People will not become hypermilers, but will meet EPA and will be happy to save money.

Denis.
__________________
Save money & CO2 at home : http://ecorenovator.org/
Created and managed by the creators of http://ecomodder.com/
---
Earth and health are priceless, so are kilotank and AT-PZEV
Best Mégane tank: 1268.9mi @ 77.847 MPG(US)
2008/06-2011/10 saving:
  • 5725.5 kg CO2 (5342.6+382.9)
  • Diesel / Money: 42.17% = 2446.25€ = 3357.26$


---
megane : thread - kill switch.
  Reply With Quote
Old 07-07-2008, 01:00 PM   #6 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
Thanks: 0
Thanked 12 Times in 9 Posts
you could make that for 15 dollars worth of parts on a circuit board 1" x 1". Analog output 1-axis accelerometer, 2-channel comparitor. Set the light to turn on when the accelerometer outputs a certain level on accel and decel (one comparitor each), and you're done.

If doesn't have to be "optimal", it just has to be a help for people that care less than your typical EM reader.
  Reply With Quote
Old 07-07-2008, 02:55 PM   #7 (permalink)
EcoModding Apprentice
 
Join Date: May 2008
Location: South Dakota
Posts: 117

GMC Sonoma - '94 GMC Sonoma
90 day: 36.97 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
If P&G is a good FE technic then what is so wrong with fast acceleration? Isn't the Pulse in P&G just fast acceleration?
  Reply With Quote
Old 07-07-2008, 02:57 PM   #8 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
Thanks: 0
Thanked 12 Times in 9 Posts
No, I don't htink so. Correct me if i'm wrong as I am new here, but i believe that in P&G, the time taken the accelerate should be the same as the time taken to coast. A hard accel is just a huge fuel dump with little efficiency.
  Reply With Quote
Old 07-07-2008, 03:01 PM   #9 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: Michigan
Posts: 76
Thanks: 0
Thanked 0 Times in 0 Posts
You want acceleration is a certain range - too low is as bad as too high. "slower the better acceleration" is a myth.

I agree that an accelerometer would be useful input for maintaining optimal acceleration rates.

I suggest that car manufacturers:

1) allow the cruise control "resume" button to work from a standing stop.
2) tweak the resume to maintain optimal acceleration
  Reply With Quote
Old 07-07-2008, 05:54 PM   #10 (permalink)
EcoModding Apprentice
 
Join Date: May 2008
Location: South Dakota
Posts: 117

GMC Sonoma - '94 GMC Sonoma
90 day: 36.97 mpg (US)
Thanks: 0
Thanked 4 Times in 4 Posts
Quote:
Originally Posted by MazdaMatt View Post
No, I don't htink so. Correct me if i'm wrong as I am new here, but i believe that in P&G, the time taken the accelerate should be the same as the time taken to coast. A hard accel is just a huge fuel dump with little efficiency.
I understand this, but I thought a big part of the FE gain in P&G was the fact that the motor is running at its peak efficiency, with regard to power generated vs. fuel consumed, at a 2/3 to 3/4 throttle opening (pulse mode).

Slow accel and decel never operates the motor in its peak power/fuel efficiency range.

Having said all this, I do indeed accel and decel gradually and I know I get better mileage for it. I guess my main question is, how is it that P&G can be so FE effective since it goes so contrary to slow accel/decel ?

Put another way, why wouldn't it be best of all to use a 'slow accel then glide' since slow accel is better than hard accel?


Last edited by Gregte; 07-07-2008 at 06:06 PM..
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
EcoModding for Beginners: Getting great gas mileage. SVOboy EcoModding Central 55 08-21-2012 12:34 AM
In a world where Jeeps get horrible gas mileage.... EcoJeeper Introductions 16 03-26-2009 01:09 PM
Better Gas Mileage from my 06 Matrix thevisionseeker Hypermiling / EcoDriver's Ed 9 06-02-2008 05:11 PM
Why my gas mileage sucks. Big time. Peakster The Lounge 4 01-01-2008 05:38 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