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Interesting eco-driving studies and presentations
By surfing the web, I found a few interesting studies and presentations on eco-driving.
The first one is a 1999 Swedish pre-study called "Impact of EcoDriving on emissions and fuel consumption". Most interesting are the before/after learning in chapter 3 : slow down, acceleration, speed, rpm, gear change sequence, constant speed, pedal position... Note: it's the only study I found which is saying that eco-driving can have a negative effect on CO and HC emissions. The second one is a 2008 Belgian presentation called "Driving Style of the 21st century". Shows interesting data about tires, speed, accelerations, gear change... It includes a BSFC in the acceleration slides ! The third one is a 2007 Swedish presentation called "Great savings every kilometre". It's the only one talking about total cost. It references these 2 flyers : "tips on how to stretch your fuel tank" and "Eco driving can slash HDV fuel bills". Note : 1SEK = 0,10513€ = 0,14947$ Hope it helps to spread the knowledge... Denis. |
groar -
Thanks for these links. I have also wondered about the effect on emissions with Ecodriving. Unfortunately, I couldn't read the first PDF for some reason. If you could read it, then there must me something wrong with my PC's config. I like one of the quotes in the presentations : "It's your concern when your neighbour's house is on fire." Horatius (65 to 8 B.C.) CarloSW2 |
Interesting. I saw in the Swedish presentation that eco-driving training has been a required part of all driver training courses in Sweden since 2007. That's an idea the US could definitely use.
another hint: 1 liter saved per 100 km is about 0.26 gallons per 60 miles |
double post - ignore
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For other pollutants it's far more complicated and I didn't found any clear response, the studies are mainly about CO2. The second document (p.34-35) is showing very good saving :
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The time has come to say fair's fair Denis. |
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1 mile = 1.609 km - 1 km = 0.622 mile 1 gallon = 3.785 litres - 1 litre = 0.264 gallons And now the magic conversion formulas for consumptions : m MPG = 235 / L l/100 L l/100 = 235 / m MPG Denis. |
3 Attachment(s)
Denis -
I was able to read the converted PDFs. Thanks. This is a graph I am very familiar with : (from 1999_165E_impact_of_ecodriving_on_emissions_and_fu el_consumption pdf file) Attachment 1770 Under many conditions, the leaner the burn, the higher the NOx. I do like the idea of an "emissions estimator" in our eco-feedback gizmos : Attachment 1771 Because, if we knew our emissions, we could find the "sweet-spot" for FE and emissions : Attachment 1772 CarloSW2 |
Thanks for the links! Reading now.
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I found the bit about 100kg increasing consumption 1l/100km a little suspect.
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This is like the AC, I never saw an added 1l/100km in my newer car, but may be mine is too well maintained ;) What was interesting is that these presentations were far more complete than the usual 1 or 2 rules reports on French TV (top 3 : respect speed limits, check tires and maintain the car) saying you will save 33% of gas (ie EPA +50%). Denis. |
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