Big Fuel Penalty in Head / Crosswind conditions - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 06-19-2016, 10:44 PM   #1
Registered Member
 
Join Date: Jan 2014
Posts: 104
Country: United States
Big Fuel Penalty in Head / Crosswind conditions

From the Cummins' Diesel "Secrets of Better Fuel Economy"...

"For every 10 mph of headwind or crosswind, mpg is reduced by nearly 13%."

Rain and snow aren't good, too.

Full report here:

http://cumminsengines.com/uploads/do...whitepaper.pdf
__________________

ChewChewTrain is offline   Reply With Quote
Old 06-20-2016, 04:42 AM   #2
Registered Member
 
Join Date: Aug 2009
Posts: 2,483
Country: United Kingdom
Location: Mid Wales
Doug, you posted this back in January, don't you remember?

Maybe the mods can merge this with the duplicate topic?
__________________

__________________

Please subscribe to my YouTube channel
Draigflag is offline   Reply With Quote
Old 06-20-2016, 07:03 AM   #3
Registered Member
 
Join Date: Jan 2014
Posts: 104
Country: United States
Quote:
Originally Posted by Draigflag View Post
Doug, you posted this back in January, don't you remember?

Maybe the mods can merge this with the duplicate topic?
Yeah. I remember. Not THAT old YET! "Where am I? And, who are you?"

While rereading the Cummins report, I noticed the wind penalty info. So, I thought I'd use that as an excuse to repost the article for new Fuelly members, who most likely didn't see the original 6 month old post. I know that I haven't combed through ALL the older fuelly posts.

Plus, as you know, Paul, I like to hear the sound of my voice.
ChewChewTrain is offline   Reply With Quote
Old 06-20-2016, 07:06 AM   #4
LDB
Registered Member
 
Join Date: Jun 2013
Location: Houston suburb
Posts: 284
Country: United States
Location: Friendswood, (Houston suburb)
Yes, and driving 10mph faster does the same thing.
__________________
LDB is offline   Reply With Quote
Old 06-20-2016, 09:17 AM   #5
Registered Member
 
Join Date: Aug 2009
Posts: 2,483
Country: United Kingdom
Location: Mid Wales
The original topic is here with my results. I saw an epic 20% dive in strong headwinds with added rain just to rub salt in the wound!

http://www.fuelly.com/forums/f8/headwind-18370.html
__________________

Please subscribe to my YouTube channel
Draigflag is offline   Reply With Quote
Old 06-20-2016, 05:56 PM   #6
Registered Member
 
Join Date: Jan 2014
Posts: 104
Country: United States
Quote:
Originally Posted by LDB View Post
Yes, and driving 10mph faster does the same thing.
Invent something to determine if one is driving into a headwind, crosswind, or not.
ChewChewTrain is offline   Reply With Quote
Old 06-20-2016, 07:42 PM   #7
LDB
Registered Member
 
Join Date: Jun 2013
Location: Houston suburb
Posts: 284
Country: United States
Location: Friendswood, (Houston suburb)
That will be up to someone more inventive than I. I just know driving 62 got me a lot better mileage than the guys running 70+ in like spec'd trucks.
__________________
LDB is offline   Reply With Quote
Old 06-20-2016, 08:06 PM   #8
Registered Member
 
Join Date: Jan 2014
Posts: 104
Country: United States
Quote:
Originally Posted by LDB View Post
That will be up to someone more inventive than I. I just know driving 62 got me a lot better mileage than the guys running 70+ in like spec'd trucks.
We should get Draigflag/Paul to invent something. He's got enough spare money to waste on exotic, collectible EVs. And, he's obviously has lots of free time, as evidenced by how often he comments on this website.

To be perfectly fair, I'll flip a coin. Heads, Paul does it. Tails, Paul does it later.
ChewChewTrain is offline   Reply With Quote
Old 06-21-2016, 07:08 AM   #9
Registered Member
 
Join Date: Jun 2009
Posts: 302
Country: United States
Location: Nebraska
You don't have to invent anything. Just buy an anemometer of the type with a little propeller on one end and a fin on the other to keep the propeller pointed into the wind. The propeller gives you the airspeed; the direction it is pointed gives the wind direction relative to the car.
Charon is offline   Reply With Quote
Old 06-21-2016, 07:35 AM   #10
Registered Member
 
Join Date: Jul 2014
Posts: 126
Country: Ireland
Location: Galway
Charon,

Not quite sure how this would work, given that the car is moving through the air as well as the air moving relative to the ground.

Maybe if you had something like an aeroplane, where you get both ground speed and air speed, where airspeed will include any tail/head/side wind. it still doesn't really give you side wind information though.

I know this is good information to have, but I'm not quite sure what changes or decisions you could make having this information. Although I suppose at the very least it would let you know why your MPG for a certain trip was not as good as it should be.

Oliver.
__________________

__________________
OliverGT is offline   Reply With Quote
Reply

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


Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 09:40 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.