Interactive hybrid cars resource
GreenHybrid Home - Hybrid Cars
Hybrid Cars Discussion Forums
Hybrid Articles
Hybrid Mileage Database & Car Specs
Hybrid Car Photo Gallery
Shopping Guide for Hybrid Cars


Go Back   GreenHybrid - Hybrid Cars > Hybrid Topics > Fuel Economy & Emissions
Register FAQ Members List Search Today's Posts Mark Forums Read

Fuel Economy & Emissions Talk about the mileage database, EPA, hypermiling, gas and driving strategy. 

Reply
 
Thread Tools Search this Thread
  #1 (permalink)  
Old 05-09-2005, 08:07 AM
lars-ss lars-ss is offline
Ridiculously Active Enthusiast
 
Real Name: Larry S. Singleton
Location: Phoenix, AZ
Hybrids: 2007 TCH and Loving It !
Posts: 1,427
Default New Tank = High Mpg at first then DOWN DOWN

Has anyone else noticed that the HCH gets really high MPG numbers right after a fillup, then goes DOWN from there? Or is it just the way I fillup?

I ask because I usually fillup at Sams' Club, the closest of which is about 6 miles from my home, and others I use are 10-12 miles from home. So immediately after filling up, I always get some good "high mileage conducive" city street driving at 35-45 miles per hour before getting home.

My MPG on the FCD when I get home is usually ALWAYS at least 65 MPG, sometimes has been as high as 73 MPG for that first 5-10 miles immediately following the fillup, then after that it starts to quickly drop. Within 30-40 miles I am usually back down in the mid-50s, which is where my tanks lately have been ending up.

Does anyone else see this in their HCH? Or is it just the mechanics of my fillup process that is causing this, meaning the way I get to drive it for high MPG right after filling up?

I know that in non-hybrid cars, car makers have always intentionally caused the first half of the tank to show "higher MPG" to let new buyers think they are getting such a great car (started I think in the 1960s) and I wonder if a little bit of that has been incorporated into the HCH by tradition?

Anyone have any similar experience or ideas? Just curious !!!
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2 (permalink)  
Old 05-09-2005, 09:09 AM
xcel's Avatar
xcel xcel is offline
Ridiculously Active Enthusiast
 
Real Name: Wayne Gerdes
Location: Northern Illinois
Posts: 2,567
Default Re: New Tank = High Mpg at first then DOWN DOWN

Hi Lars-ss:

___I can almost guarantee that you are receiving a bit of assist in the FE department over those first few miles because of the vapor in the Vapor recovery HW. This vapor addition is not calculated in the Honda algorithm for the FCD for some reason. I have seen this in the Insight many times right after a tall fuel up. I have arrived home with > 135 mpg more then once with all city driving and a steep 120’ climb in my departed Honda Insight as well if that helps

___Good Luck

___Wayne R. Gerdes
___Waynegerdes@earthlink.net

.



Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3 (permalink)  
Old 05-09-2005, 09:41 AM
hawkGT647 hawkGT647 is offline
Pretty Darn Active Enthusiast
 
Posts: 254
Default Re: New Tank = High Mpg at first then DOWN DOWN

I concur with Xcel. This happened recently with my Insight.

See: http://www.greenhybrid.com/discuss/t...-mpg.2141.html

I was really enjoying the outrageous MPG's for a little while, then after a few miles everything returned to normal...darn!

Regards,
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

vB 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 Topic Starter Forum Replies Last Post
higher octane = higher mpg? coyote Fuel Economy & Emissions 35 03-30-2008 06:20 AM
mpg observations coyote Honda Civic Hybrid 14 08-13-2007 10:32 AM
Temporary HIGH! MPG hawkGT647 Fuel Economy & Emissions 1 05-06-2005 04:58 PM
MPG Improvement Lewis Honda Accord Hybrid 7 04-01-2005 08:47 AM
Highest tank average ... xcel Fuel Economy & Emissions 1 04-26-2004 06:21 PM


All times are GMT -7. The time now is 01:08 AM.



This website is made possible by people like you.
Thank you.


HOME   .   DISCUSS   .   LEARN   .   COMPARE   .   SHARE   .   SHOP

About      Press Release      Contact

Suggested Link      Promote Hybrids      Site Store




COPYRIGHT © 2005-2006 Internet Brands, Inc. | Privacy Policy

SEO by vBSEO 3.0.0