MPG vs MPH at different throttle settings - Page 2 - Fuelly Forums

Click here to see important news regarding the aCar App

Thread Tools Display Modes
Old 08-18-2009, 12:13 PM   #11
Registered Member
Join Date: Mar 2009
Posts: 1,139
Country: United States
I tried to fight my nature and just estimate the tail end of the coast down curve, but I finally gave in and made the trip over to my test area and reran things starting at 35 mph. It didn't flatten out as much as I expected, so maybe that was a good thing. I merged the high and low speed runs in this graph. I pseudo-coded the program I need so I should have the results soon.



Main Entry: co de pen dence - see codependency
co de pen den cy
Pronunciation: \kō-di-ˈpen-dən(t)-sē\
Function: noun
Date: 1979

: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
GasSavers_maximilian is offline   Reply With Quote
Old 08-18-2009, 02:28 PM   #12
Senior Member
FrugalFloyd's Avatar
Join Date: Dec 2009
Posts: 383
Country: United States
Location: Bay Area, CA
I'll throw this graph up for discussion.

The Elantra is an AT car, 2006. The other two are MTs, with the Nissan being a 2002, and the 2006 Scion being an aerodynamic barn door.

The highest mpg values in the upper left are all P&G values. The dips from the P&G values in the respective lines are the results of lower gear runs. The two MT cars I can verify. I'm guessing that's the reason for the AT Elantra's mileage dip.

The AT auto simply isn't in the same league as the others for high mileage at lower speeds. I can't FAS with it, so it's always running at idle speed or faster. For much of the graph, its mileage trails the MT cars by 10 mpg, and it doesn't catch either of them until 60+ mph (speeds I don't typically drive at).

The interesting thing is how flat the mileage drop-off is on the Elantra compared to the other two. My guess is the Elantra is much better streamlined, as its gearing is about the same as the Nissan's. They both churn about 2200 rpm @ 55 mph, while the Scion buzzes at 2600 rpm at that speed. The Scion beats the Nissan's mileage at about 62 mph. If I extend the lines, the Elantra should best the Scion's mileage at 72 mph and faster.

FrugalFloyd is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Quick question for you with hypermiller status: 808subaru General Fuel Topics 15 05-16-2009 07:39 PM
drivetrain resistance bagpipe goatee General Fuel Topics 9 09-14-2008 09:04 PM
Landspeeds E-bike Conversion (Mk2) landspeed People Powered 5 06-06-2008 07:37 PM
YAY! The fit is here! Matt Timion General Discussion (Off-Topic) 45 10-21-2006 01:43 PM
Electrical power and cars. DracoFelis Automotive News, Articles and Products 2 09-16-2006 01:31 PM

» Fuelly iOS Apps
No Threads to Display.
Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 11:32 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.