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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-13-2013, 03:59 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Mar 2013
Location: Calgary
Posts: 69

Black sheep 2013 - '11 Volkswagen Jetta S
90 day: 29.01 mpg (US)

black sheep 2014 - '11 volkswagen jetta trendline plus
90 day: 29.78 mpg (US)

Black sheep 2015 - '11 Vw Jetta mk6
90 day: 22.42 mpg (US)
Thanks: 20
Thanked 15 Times in 9 Posts
most efficient engine load for a 2.0L Gas

so i have a 2011 2.0L Gas jetta, now i know the engine is 20 year old technology so i hope someone can tell me the most efficient way to accelerate, i have been keeping the ScanGauge LOD setting between 75% and 80% when accelerating , is this correct? and if i reach 90% load what does this mean exactly? am i dumping useless fuel into the engine if i hit 90-99%.
Another question, do i shift gears when my engine load decreases to 70% on acceleration or do i push the pedal harder to bring it back up to 75%-80%. are there any charts i can look at for a jetta 2.0 l gas THANKS!

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-13-2013, 05:40 PM   #2 (permalink)
Master EcoModder
 
JRMichler's Avatar
 
Join Date: Feb 2011
Location: Phillips, WI
Posts: 1,013

Nameless - '06 GMC Canyon
90 day: 37.45 mpg (US)

22 Maverick - '22 Ford Maverick XL
90 day: 41.9 mpg (US)
Thanks: 188
Thanked 466 Times in 287 Posts
Recommendations like "accelerate at XX% LOD" are only a starting point. You need to find what works best for your car, traffic situation, and shift points.

In my truck, I just jam the gas pedal a little over halfway down, and shift at 2500 RPM. That not only gets me the best gas mileage, but has the additional advantage of keeping up with traffic. YMMV.
__________________
06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.

22 Maverick: Summer 2022 burned 62.74 gallons in 3145.1 miles for 50.1 MPG. Winter 2023-2024 - 2416.7 miles, 58.66 gallons for 41 MPG.
  Reply With Quote
Old 10-13-2013, 07:14 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: Mar 2013
Location: Calgary
Posts: 69

Black sheep 2013 - '11 Volkswagen Jetta S
90 day: 29.01 mpg (US)

black sheep 2014 - '11 volkswagen jetta trendline plus
90 day: 29.78 mpg (US)

Black sheep 2015 - '11 Vw Jetta mk6
90 day: 22.42 mpg (US)
Thanks: 20
Thanked 15 Times in 9 Posts
very cool, so it really depends on my shift points? so if i accelerate at 80% load and shift at 2000 rpm for every gear that would be optimal? ill cehck other threds for optimal shift point in a 2.0l gas engine
  Reply With Quote
Old 10-16-2013, 01:56 AM   #4 (permalink)
Master EcoModder
 
Join Date: Apr 2013
Location: World
Posts: 385
Thanks: 82
Thanked 82 Times in 67 Posts
Re. >=90% load. You can check that yourself.

If you pull up closed/open loop on the SCII screen that will tell you - with some inherent time lag in the display - when you are entering fuel enrichment i.e. entering open loop fuel control is the indication that extra fuel is being added.

Stay just short of that load. Up to that point, the higher the load the better.
  Reply With Quote
The Following 2 Users Say Thank You to Occasionally6 For This Useful Post:
dmafanp (10-16-2013), SpindlyJim (10-18-2013)
Old 10-16-2013, 05:00 AM   #5 (permalink)
EcoModding Apprentice
 
Join Date: Oct 2013
Location: Canada
Posts: 132

The Rental - '13 Hyundai i30
90 day: 37.55 mpg (US)

Autocross - '04 Ford Focus ZX3
90 day: 24.76 mpg (US)

The Wifes - '02 Ford Focus SVT
90 day: 23.54 mpg (US)
Thanks: 2
Thanked 48 Times in 38 Posts
as stated above, usually accelerate at highest load but in closed loop.
for shift points it depends on each engine.
I checked the BSFC thread but there isnt the 2.0L VW engine.
Brake Specific Fuel Consumption (BSFC) Maps - EcoModder

the closest was the Ford DOHC 2.0L zetec engine (16V).
what it shows is to try to stay in the 1500 to 3000rpm range, but your car maybe different.
some of the smaller low torque engines, like the toyota 1.8L, had lower consumption in the 3000-4000 rpm range.

your engine may be different

__________________





  Reply With Quote
Reply  Post New Thread


Thread Tools




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