Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-15-2017, 02:00 AM   #41 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: Vermont
Posts: 2,009

Gaptooth - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 66.55 mpg (US)
Thanks: 643
Thanked 749 Times in 475 Posts
The extra fuel it takes to get up a hill I typically save with a longer glide with the engine off on the other side, due to more momentum. Ultimately you only "lose" from slightly higher rolling resistance, and when you have to use friction braking and waste the larger momentum you've turned that gasoline into.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-15-2017, 07:56 AM   #42 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 5,613
Thanks: 0
Thanked 534 Times in 479 Posts
Quote:
Originally Posted by dipstick View Post
It is the "getting up to speed" and "hills" where that added weight should show up and cause losses... and then there is still the cost factor isn't there?

Sure, but if you can convert that weight disadvantage into some sort of power assistence while driving uphill and decrease the brake usage while downhill it might justify.
  Reply With Quote
Old 08-15-2017, 02:36 PM   #43 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 2,535
Thanks: 3
Thanked 1,549 Times in 1,094 Posts
Audi's version of an electric turbo/supercharger

Electric Turbo - Pelican Parts Technical BBS
Quote:
........bypassed under most operating conditions...........

The energy required to drive the electric compressor is derived largely from recuperation under trialing throttle conditions, making it consumption neutral......
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
Old 08-28-2017, 01:50 PM   #44 (permalink)
Panther140
 
Join Date: Jul 2017
Location: Wisconsin
Posts: 46
Thanks: 17
Thanked 6 Times in 5 Posts
Quote:
Originally Posted by dipstick View Post
It is the "getting up to speed" and "hills" where that added weight should show up and cause losses... and then there is still the cost factor isn't there?

Weight transfers into momentum, which isn't a major loss when that momentum is recoverable energy via regenerative braking.
__________________
2007 Silverado 1500 2wd flex fuel with active fuel management. 33" Nitto Terra Grappler tires. 2.5" motofab front end leveling kit.
  Reply With Quote
Old 09-09-2017, 12:24 AM   #45 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 5,613
Thanks: 0
Thanked 534 Times in 479 Posts
Found something that might inspire you at least.

Home | XLHybrids

http://www.xlhybrids.com/content/ass...11-0301-LR.pdf
  Reply With Quote
Old 09-19-2017, 03:27 PM   #46 (permalink)
EcoModding Apprentice
 
Join Date: Oct 2009
Location: Portland OR
Posts: 180
Thanks: 1
Thanked 15 Times in 11 Posts
FWIW ,, on another forum that specializes in the LS grandchildren engines from GM, the FIRST mod on the newer ones is to disable the Variable displacement system. Its been tagged with serious engine wear issues (Again... Remember Northstar?) The un-powered cylinders wear out rings too fast.. And have piston scuffing issues.. For about 800 bucks HPtuner would let you play all you wanted with how it runs..
__________________
If it has a motor its worth playing with.......
  Reply With Quote
Old 09-19-2017, 04:06 PM   #47 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: Vermont
Posts: 2,009

Gaptooth - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 66.55 mpg (US)
Thanks: 643
Thanked 749 Times in 475 Posts
I wonder why that is? I would imagine those cylinders would still get lubricated, maybe they're just getting too cold?
  Reply With Quote
Old 10-16-2017, 09:09 PM   #48 (permalink)
Panther140
 
Join Date: Jul 2017
Location: Wisconsin
Posts: 46
Thanks: 17
Thanked 6 Times in 5 Posts
Quote:
Originally Posted by dwtaylorpdx View Post
FWIW ,, on another forum that specializes in the LS grandchildren engines from GM, the FIRST mod on the newer ones is to disable the Variable displacement system. Its been tagged with serious engine wear issues (Again... Remember Northstar?) The un-powered cylinders wear out rings too fast.. And have piston scuffing issues.. For about 800 bucks HPtuner would let you play all you wanted with how it runs..
For $800 I could just replace each of those pistons 3 or 4 times

The engine gets 20% better thermal efficiency when in V4 mode than it does in V8 mode doing the same amount of work.
__________________
2007 Silverado 1500 2wd flex fuel with active fuel management. 33" Nitto Terra Grappler tires. 2.5" motofab front end leveling kit.
  Reply With Quote
Old 10-16-2017, 09:44 PM   #49 (permalink)
Panther140
 
Join Date: Jul 2017
Location: Wisconsin
Posts: 46
Thanks: 17
Thanked 6 Times in 5 Posts
Quote:
Originally Posted by Ecky View Post
I wonder why that is? I would imagine those cylinders would still get lubricated, maybe they're just getting too cold?
Its one of those issues that only really exists in the forums. I don't know anybody who has actually had that issue. Many of my family and friends have chevy trucks and SUVs that have the 5.3L equipped with AFM.

My truck is at about 130k miles. I try to maximize my use of AFM. The compression and leakdown is the same between both cylinder banks last time I checked.

My dad has a 2012 silverado 1500 with the 5.3L engine and it has AFM. Neither of us have had a single problem with our trucks. My GF's dad has a 2016 silverado-- Also has AFM. Also has not had any problems.

I think these AFM horror stories get circulated because there are a couple melons out there that get all the attention. Then guys like dwtaylorpdx get on the forums and echo what they've read on other forums.

Or maybe certain driving habits bring on the issue more than others. My truck spends most of its time either damn near WOT, or cruising lightly because i'm trying to stay in V4 mode.

__________________
2007 Silverado 1500 2wd flex fuel with active fuel management. 33" Nitto Terra Grappler tires. 2.5" motofab front end leveling kit.

Last edited by Panther140; 10-16-2017 at 10:04 PM..
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com