Suggestion: Hypermiler rating system

[JethroBodine]

I figure, if I drive both in the same tank, it still takes the same fuel to fill it, so I don't worry about splitting it up. My commute is neither "city" nor "highway" anyway. I do make a note in the fuel log about where I'm driving, especially if it's a long highway trip.

I, honestly, don't feel the need to have the current system changed. I do keep my original fuel mileage in mind on every fill, as that was the reason I came here.

[t vago]

Originally Posted by ProDarwin

I don't use the tracking on this system, I use fuelly. Out of curiosity, if you track on ecomodder, do you record your highway vs. city mileage?

The EPA weights 55 highway/45 city.

I also use Fuelly as my primary fuel usage tracker.

How do you differentiate between highway miles and city miles?

[ProDarwin]

Originally Posted by t vago

I also use Fuelly as my primary fuel usage tracker.

How do you differentiate between highway miles and city miles?

Are you asking how do I input in Fuelly, or how do I decide which I am doing?

On Fuelly there is a slider, at least on the web-app for "add a fuel up".

http://content.screencast.com/users/...06-29_0747.png

I fill it out on my smartphone, so it looks different, but same idea.


The way I decide isn't very technical in nature. I just think about the last tank (usually the last few days - week) and where I went. I consider MOST driving around here about 50% city (average speed ~25mph, lots of stoplights, speed limits around 35mph), highway out to my parents or any time I am touching interstate.

I would love to see an average speed field and some sort of algorithm based on that - although that would be hard with hyper-milers.

[t vago]

Originally Posted by ProDarwin

The way I decide isn't very technical in nature. I just think about the last tank (usually the last few days - week) and where I went. I consider MOST driving around here about 50% city (average speed ~25mph, lots of stoplights, speed limits around 35mph), highway out to my parents or any time I am touching interstate.

Every time I fill up, I take my trip timer value, multiply it by 30 MPH, and then divide that into my corrected trip odometer value (corrected because my speedo pinion factor isn't quite dead-on accurate - about 99.3%).

For the resulting quotient, if it's below 1, then that tankful is completely city driving. If the resulting quotient is above 2, then that tankful is completely highway driving. Values between 1 and 2 are treated as follows: subtract 1, then multiply by 100. That gives me a percentage of highway driving. I cna then easily convert this value into something I can plug into Fuelly.

It may not be completely accurate, but it gives me a good idea.

[user removed]

I just fill and write the distance travelled, the cars FE reading and the average speed, on the reciept, then reset everything.

My average speed for the last 4k miles is 38 MPH. I usually choose to drive on the older US routes which are mostly 55 MPH with some of the country sections at 60 MPH.

My routes are probably better than most, but you can really get stuck in traffic here if you are not careful. I have seen 1 mile in 1 hour, and 14 miles in 14 hours on a rare occasion, but I know all of the alternate routes and my worst was the 1 mile in one hour.
Now I exit on the frontage road where I can get off when I see the backup. Been driving here since before Interstates existed (at least here).

If I was going to change the way things were done, I would want to know average speeds, but then that would make it very complicated for many drivers.

I don't even look at the top tens very much. I know I will not be there in my car. When I was in the VX a lot of members didn't believe my mileage, but it was what I posted. If I had to enhance the facts, I wouldn't bother posting anything about mileage.

reagrds
Mech

[ProDarwin]

Originally Posted by t vago

Every time I fill up, I take my trip timer value, multiply it by 30 MPH, and then divide that into my corrected trip odometer value (corrected because my speedo pinion factor isn't quite dead-on accurate - about 99.3%).

For the resulting quotient, if it's below 1, then that tankful is completely city driving. If the resulting quotient is above 2, then that tankful is completely highway driving. Values between 1 and 2 are treated as follows: subtract 1, then multiply by 100. That gives me a percentage of highway driving. I cna then easily convert this value into something I can plug into Fuelly.

It may not be completely accurate, but it gives me a good idea.

So basically

<30mph average = 100% city
30-60mph average = weighted (45 = 50/50)
>60mph = 100% highway

Interesting. I should get a scangauge and see what my numbers are using your system. I'd guess closer 80% city than the ~50% I have right now.

(The Appliance (Saturn SL2) | Fuelly)

I wonder if an MPGuino could be programmed with an algorithm to take into account multiple variables and generate a highway/city number for each tank. Say, average speed, # of stops spent idling > 30 seconds, amount of time spent coasting < 35mph, etc.

It would be an interesting experiment.

<--- data junky.

[Diesel_Dave]

Using average speed is problematic. 50% 20 mph and 50% 60 mph is quite different from someone who goes 40 mph 100% of the time. Also, idle time (0 mph) signifiacntly affects average speed numbers.