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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-09-2011, 08:05 AM   #11 (permalink)
Eco-ventor
 
jakobnev's Avatar
 
Join Date: Oct 2010
Location: sweden
Posts: 1,645

Princess - '92 Mazda MX-3 GS
House of Tudor
Team Mazda
90 day: 53.54 mpg (US)

Shirubāarō (*´ω`*) - '05 Toyota Prius Executive
Team Toyota
90 day: 54.88 mpg (US)

Blue Thunder - '20 Hyundai IONIQ Trend PHEV
Team Hyundai
Plug-in Hybrids
90 day: 194.72 mpg (US)
Thanks: 76
Thanked 709 Times in 450 Posts
Send a message via MSN to jakobnev
An alternative (no pun intended) is to carry a battery with slightly higher nominal voltage than the car:



I'm getting a 5A boost at the beginning of a trip and then it goes down towards 2A in an hour.

__________________




2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-09-2011, 10:49 PM   #12 (permalink)
Depends on the Day
 
RH77's Avatar
 
Join Date: Nov 2007
Location: Kansas City Area
Posts: 1,761

Teggy - '98 Acura Integra LS
Sports Cars
90 day: 32.74 mpg (US)

IMA - '10 Honda Insight EX
Team Honda
90 day: 34.76 mpg (US)

Tessie - '06 Acura TSX Base
90 day: 28.2 mpg (US)
Thanks: 31
Thanked 41 Times in 35 Posts
Quote:
Originally Posted by Arragonis View Post
The "Blue" (named after the VW/Merc "Blue" eco technology - well they don't want to give the Green Party any credit do they ?) failed for me because it's too expensive for what it is.
At least you have more than 2 distinctly different parties :/

___

I really want to try this mod on Teggy -- I have a switch for the transmission/TC, why not for the alternator as well?

My biggest concern is the extended time the vehicle remains parked up to a week or 2 outdoors -- is there a minimum recommended voltage on a stock batt? I'm sure after time, it can really wear on an average battery -- any thoughts there???

-RH77
__________________
“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein

_
_
  Reply With Quote
Old 07-10-2011, 04:56 AM   #13 (permalink)
The PRC.
 
Join Date: Oct 2009
Location: Elsewhere.
Posts: 5,304
Thanks: 285
Thanked 536 Times in 384 Posts
Quote:
Originally Posted by RH77 View Post
At least you have more than 2 distinctly different parties
We have at least 4 large ones in Scotland - be careful what you wish for, the choice and variety is no better...
__________________
[I]So long and thanks for all the fish.[/I]
  Reply With Quote
Old 07-10-2011, 09:10 AM   #14 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,172 Times in 1,469 Posts
Quote:
Originally Posted by sixpackdan View Post
What about one of those "flexable" solar panels on the roof to keep the battery charged?
I have been "planning" on this idea for a while. My 98 Civic has a roof large enough for a 120w panel that would generate 18v at peak (I'm still learning). I want to install an alternator kill switch and LED lights as well. I think I could run the car possibly all day with the alternator off, and then turn it on as the sun weakens. One thing would be great... my extended EOC usage would not kill my battery because the panel would still be recharging even though the engine was off.

@rgathright: those batteries are heavier than stock, no? I was hoping for a lighter deep cycle battery to contribute to my weight-reduction program too.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.




Last edited by California98Civic; 07-10-2011 at 09:23 AM..
  Reply With Quote
Old 07-11-2011, 12:00 PM   #15 (permalink)
EcoModding Lurker
 
Join Date: Aug 2009
Location: Baltimore, MD USA
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Question What % of total engine load is alternator?

rgathright,
What percentage increase in mileage do you get with the alternator off?
Do you re-engage the alternator when braking or coasting down a hill?
Did you replace your starter battery with a deep cycle battery which is built to not expect immediate recharge?
If you replaced you battery, how has it effected your cold weather starting?

CatbusMike
  Reply With Quote
Old 07-11-2011, 03:08 PM   #16 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
...connecting the brakelights to electronically "re-engage" the alternator field would cause charging only when decelerating.

...simply replace the "hot" (+12VDC) line going to the regulator device/module with a wire connected to the brakelights = field engergized only during breaking.
  Reply With Quote
Old 07-11-2011, 03:39 PM   #17 (permalink)
EcoModding Lurker
 
Join Date: May 2011
Location: Philadelphia
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
My idea for an alternator modification is to replace the shaft pulley with an Air Con-type clutch/pulley. With a circuit sensing batter voltage, while the voltage is adequate, the clutch would allow the pulley on the alternator to spin freely. When the voltage reaches a pre-determined low, the clutch would kick in, turn the alternator and recharge the battery. You'd only spin the alternator when you needed to on long trips, and could top the battery at home via a trickle charger between trips.
  Reply With Quote
Old 07-11-2011, 03:42 PM   #18 (permalink)
EcoModding Lurker
 
Join Date: May 2011
Location: Philadelphia
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Old Tele man View Post
...connecting the brakelights to electronically "re-engage" the alternator field would cause charging only when decelerating.

...simply replace the "hot" (+12VDC) line going to the regulator device/module with a wire connected to the brakelights = field engergized only during breaking.
This could work on stop-start urban trips, but would be problematic on long journeys with little stopping.
  Reply With Quote
Old 07-11-2011, 06:31 PM   #19 (permalink)
DieselMiser
 
ConnClark's Avatar
 
Join Date: Jun 2008
Location: Richland,WA
Posts: 985

Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
90 day: 22.44 mpg (US)
Thanks: 46
Thanked 232 Times in 160 Posts
another paper

Automotive Power Generation and Control
__________________
  Reply With Quote
The Following User Says Thank You to ConnClark For This Useful Post:
t vago (07-13-2011)
Old 07-11-2011, 07:53 PM   #20 (permalink)
MPG Militia HMV-25E80+A
 
JethroBodine's Avatar
 
Join Date: Mar 2011
Location: Vermont, USA
Posts: 823

FrankenJetta D - '90 Volkswagen Jetta GL
Boat tails and more mods
Diesel
TEAM VW AUDI Group
90 day: 64.35 mpg (US)
Thanks: 191
Thanked 144 Times in 98 Posts
The alternator on my car will continue to charge, once the field is energized, until the engine stops and power is removed from the field. As I don't know if this is damageing in some way, I leave the switch on until my next EO(ff)C. I monitor my battery voltage and tend to leave the alternator on when in stop and go traffic. If on a longish trip, I engage the alternator when my battery voltage gets to 12.0vdc at rest( seems to stay around 12.2 for quite a while). I do charge my battery at night, except when thunder showers are going on). I also turn the alternator on (and injectors off) when engine braking.

__________________


Quote:
It is always very amusing how our imagination is put to the test when overcoming reality. Redyaris
Boat tail project
How to gently bump start during EOC
  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com