05-19-2013, 11:48 PM
|
#1 (permalink)
|
|
EcoModding Lurker
Join Date: May 2013
Location: USA
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Accurate instrumentation possible on a diesel?
In another thread, rmay635703 said:
Quote:
Originally Posted by rmay635703
There is no fuel economy instrumentation available for diesels, unless you use the old manual thing from the 80s.
The scanguage will calculate FE on a diesel once calibrated so long as you drive one speed with one throttle position, deviate a little bit and the thing is WAY off.
|
I'd like to ask diesel vehicle owners what kind of instrumentation they're using, given this. My old 2007 Jetta currently has an UltraGauge and I'm a big fan. It would be a shame if I couldn't use it on my new 1999 F250.
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
05-20-2013, 04:47 AM
|
#2 (permalink)
|
|
Master EcoModder
Join Date: Oct 2011
Location: Poland
Posts: 840
Thanks: 185
Thanked 167 Times in 117 Posts
|
I'm using MPGuino on Berta, but it has FE signal comming out of ECU, so it was easy to make it work.
__________________
Quote:
|
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
|
|
|
|
|
|
05-20-2013, 06:03 AM
|
#3 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,923
Thanks: 0
Thanked 1,697 Times in 1,515 Posts
|
Electronics made the things easier regarding fuel-efficiency instrumentation in Diesels, but with an old-school one it's still a challenge...
|
|
|
|
|
05-20-2013, 06:07 AM
|
#4 (permalink)
|
|
Master EcoModder
Join Date: Oct 2011
Location: Poland
Posts: 840
Thanks: 185
Thanked 167 Times in 117 Posts
|
Quote:
Originally Posted by cRiPpLe_rOoStEr
Electronics made the things easier regarding fuel-efficiency instrumentation in Diesels, but with an old-school one it's still a challenge...
|
True. Flow meters are expensive, and those cheap ones sometimes are just not good enough to measure FE accurately.
__________________
Quote:
|
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
|
|
|
|
|
|
05-20-2013, 11:04 AM
|
#5 (permalink)
|
|
...beats walking...
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
|
The 2014 Cruze Diesel has the same MPG display as its gasoline counterpart...and it just counts the number (and thus volume) of injection squirts (the diesel uses more than one) to estimate diesel consumption.
|
|
|
|
|
05-20-2013, 01:27 PM
|
#6 (permalink)
|
|
EcoModding Lurker
Join Date: May 2013
Location: USA
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
Quote:
Originally Posted by cRiPpLe_rOoStEr
Electronics made the things easier regarding fuel-efficiency instrumentation in Diesels, but with an old-school one it's still a challenge...
|
1999 isn't that old, is it? The truck does have an OBDII port. |
|
|
|
|
05-21-2013, 09:38 PM
|
#7 (permalink)
|
|
EcoModding Lurker
Join Date: May 2013
Location: USA
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
|
The promotional material for the ScanGauge II indicates that it supports diesels. Is that just wrong? Or is there something about my truck that's unsupported. Still confused here...
|
|
|
|
|
05-22-2013, 02:22 AM
|
#8 (permalink)
|
|
NightKnight
Join Date: Dec 2008
Location: Placerville, CA
Posts: 1,595
Thanks: 315
Thanked 314 Times in 187 Posts
|
I have a ScanGauge II on my 2000 Jetta TDI and it does a reasonably good job of estimating the fuel consumption. Not perfect, but good enough to know how well I did on a commute or an errand. I normally run B20, and when I change to pure dino-diesel, the SG will get confused and will be off by a several MPGs. You can check out my fuel log; I've started to include the SG results with each fillup.
__________________
Last edited by NachtRitter; 05-22-2013 at 02:27 AM..
|
|
|
|
|
05-22-2013, 04:56 AM
|
#9 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,923
Thanks: 0
Thanked 1,697 Times in 1,515 Posts
|
Quote:
Originally Posted by NedTheHead
The promotional material for the ScanGauge II indicates that it supports diesels. Is that just wrong? Or is there something about my truck that's unsupported. Still confused here...
|
If it's compliant to OBD-2 your truck might be supported. |
|
|
|
|
06-06-2013, 03:28 PM
|
#10 (permalink)
|
|
EcoModding Apprentice
Join Date: Oct 2008
Location: Chile
Posts: 223
Thanks: 15
Thanked 9 Times in 7 Posts
|
In a Mercedes OM 603 engine, there is a EDS control unit that is supposed to control the amount of diesel to be inyected by injection pump.
I have EDS scheme diagram. One should take advantage of it and construct a math model that calculates diesel fuel used, and together with speed, calculate mileage.
__________________
Mercedes 300 D turbo 1993
|
|
|
|
|
