Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-18-2013, 06:07 PM   #1 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 911

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 58
Thanked 166 Times in 104 Posts
Run 60 get 28, run 65 get 30, run 70 get 29.

Mercedes 3.0 TD
Seems like the turbo diesel boost helps more than the aero hurts. My sample size is small but am going to continue driving 65 in my Mercedes for more data. I think I am comparing similar driving conditions. The engine is supposed to have peak torque at 2000 and 65 mph is 2800.

The car supposedly has a cd of .4 and is fairly small. yet pretty heavy for it's size. The engine is strictly old school IDI TD, no computer.

Comments?

__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-18-2013, 08:10 PM   #2 (permalink)
Master Ecomadman
 
arcosine's Avatar
 
Join Date: Nov 2010
Location: Chicago area
Posts: 1,136

sc1 - '98 saturn sc1
Team Saturn
90 day: 43.17 mpg (US)

Airplane Bike - '11 home built Carp line Tour

rans - '97 rans tailwind

tractor - '66 International Cub cadet 129

2002 Space Odyssey - '02 Honda Odyssey EX-L
90 day: 28.25 mpg (US)

red bug - '00 VW beetle TDI

big tractor - '66 ford 3400

red vw - '00 VW new beetle TDI
90 day: 58.42 mpg (US)
Thanks: 18
Thanked 317 Times in 215 Posts
MPG should be inversely proportional to MPH.
__________________
- Tony

  Reply With Quote
Old 02-18-2013, 08:12 PM   #3 (permalink)
Master EcoModder
 
Join Date: Oct 2011
Location: ellington, ct
Posts: 829
Thanks: 44
Thanked 101 Times in 78 Posts
Don't buy it. Maybe if it had taller gearing. Keep us posted as you get more data.
  Reply With Quote
Old 02-18-2013, 08:33 PM   #4 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,173
Thanks: 1,739
Thanked 587 Times in 401 Posts
Should probably include data points for 50 and 55.
  Reply With Quote
Old 02-18-2013, 10:04 PM   #5 (permalink)
Master EcoModder
 
JRMichler's Avatar
 
Join Date: Feb 2011
Location: Phillips, WI
Posts: 976

Nameless - '06 GMC Canyon
90 day: 35.1 mpg (US)
Thanks: 186
Thanked 404 Times in 259 Posts
Tell us how you did your testing.
__________________
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.
  Reply With Quote
Old 02-18-2013, 10:24 PM   #6 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 911

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 58
Thanked 166 Times in 104 Posts
Tony I won't argue as to the theory. But I drove it for 3000 miles at 55.

My VW gets better mileage at 55 (55 mpg). It gets only 2-3 psi at 60. The Merc gets 5 psi at 60 and 8-9 at 65. Trying to find a way to get more boost at less speed.
__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand
  Reply With Quote
Old 02-18-2013, 10:29 PM   #7 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,173
Thanks: 1,739
Thanked 587 Times in 401 Posts
Drop a gear?
  Reply With Quote
Old 02-18-2013, 10:33 PM   #8 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 911

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 58
Thanked 166 Times in 104 Posts
Nicky It is a 4 speed auto and 27 years old. Everything above 30 is in top gear. You might be right.
__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand
  Reply With Quote
Old 02-19-2013, 07:12 AM   #9 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,173
Thanks: 1,739
Thanked 587 Times in 401 Posts
If everything above thirty is in top gear, then thirty five is probably where you can get best economy.

Of course, that's problematic on US highways where going thirty is just as good as standing still...
  Reply With Quote
Old 02-19-2013, 02:47 PM   #10 (permalink)
EV convert
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 8,975

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 215
Thanked 2,938 Times in 2,290 Posts
When I put a turbo on my diesel I picked up at least 2 to 3 mpg on the highway. And thats compairing driving 55-60 when N/A to +65MPH w/turbo.

Diesel engines are nice because the more air you can cram into the cylinders the better the fuel econony and power out put will be.
If you had a boost gauge you may see why there is a fuel economy jump at the higher speeds. At 60 the turbo maybe under such light load it may not be kicking out any boost, at 65 you could be developing 1 or 3 PSI and that small change can make a lot of difference.

Quote:
Originally Posted by Varn View Post
Trying to find a way to get more boost at less speed.
Water injection

__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com