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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-25-2009, 09:46 AM   #21 (permalink)
Light foot!
 
Join Date: Sep 2009
Location: Ashland, Ohio
Posts: 6

SV650 - '08 Suzuki SV650 SF
90 day: 70.47 mpg (US)

SKY - '07 Saturn Sky base
90 day: 42.37 mpg (US)

Corvette - '00 Chevrolet Corvette Coupe
90 day: 35.93 mpg (US)

CTS-V - '05 Cadillac CTS V-series
90 day: 31.03 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Allot depends on torque, lower in the rpm band the better for mpg. Something most 4 bangers don't have hence the need for EOC and PNG. I can shift at 1500 rpms in my C5 Corvette where the SV650 it's nothing below 2K rpms with light throttle.

Add a turbo to a stock 4 cylinder and you'll see more torque at lower rpms which increases mpg in most instances. If you shifted at the same 3K rpms after adding a turbo you might not even match NA.

Depending on turbo ecu, if you stay out of positive pressure or below 100 kpa, the car should be still maintaining 14.7 or stoich which would be best for mpg.

I see you have added pistons to you Sol, change in compession?

Norm

Quote:
Originally Posted by pgfpro View Post
Not all of them.

If you have a management system and have your turbo map correctly you should be able to improve your FE and crush your N/A performance by a mile.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-25-2009, 11:02 AM   #22 (permalink)
In Lean Burn Mode
 
pgfpro's Avatar
 
Join Date: Apr 2009
Location: Pacific NW
Posts: 1,428

MisFit Talon - '91 Eagle Talon TSi
Team Turbocharged!
90 day: 41.03 mpg (US)
Thanks: 1,031
Thanked 484 Times in 316 Posts
Quote:
Originally Posted by Norm-SV650 View Post
Allot depends on torque, lower in the rpm band the better for mpg. Something most 4 bangers don't have hence the need for EOC and PNG. I can shift at 1500 rpms in my C5 Corvette where the SV650 it's nothing below 2K rpms with light throttle.

Add a turbo to a stock 4 cylinder and you'll see more torque at lower rpms which increases mpg in most instances. If you shifted at the same 3K rpms after adding a turbo you might not even match NA.

Depending on turbo ecu, if you stay out of positive pressure or below 100 kpa, the car should be still maintaining 14.7 or stoich which would be best for mpg.

I see you have added pistons to you Sol, change in compession?

Norm
Yes I have change the rods and pistons from stock. The compression now is 7.5:1

I know a lot of people will say you need to get the compression up for better efficiency but in my case with my own combustion chamber design it doesn't work right. I have tested this with an engine with a compression of 9.8:1 and the FE wasn't there.

There are major advantages to a low compression engine for FE purposes if one chooses to think outside the box
__________________
Pressure Gradient Force
The Positive Side of the Number Line

  Reply With Quote
Old 09-25-2009, 11:35 AM   #23 (permalink)
EcoModding Apprentice
 
Join Date: Aug 2008
Location: Kc KS
Posts: 148

Dart Lite - '76 Dodge Dart Dart Lite
90 day: 18.34 mpg (US)

Beater..with a Heater - '94 Isuzu Rodeo LS
90 day: 16.19 mpg (US)
Thanks: 4
Thanked 7 Times in 5 Posts
Unmentioned so far is the benefit of heat. N/A cars build warm air for a reason. We should get better MPG in summer because of the heat.
Compressing air creates heat, and the heat aids in atomization of the fuel for better economy.

__________________
Current MPG driver:
1994 Isuzu Rodeo - Beater with a Heater...
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
turbo alternator kunundrum0 EcoModding Central 24 06-05-2014 11:42 PM
63mpg in a 1986 Isuzu Trooper Turbo Diesel TheWildHippie Success Stories 18 08-10-2010 11:40 AM
Turbo diesel fuel saving idea/question? nubbzcummins EcoModding Central 15 08-10-2009 12:51 AM
turbo engines: getting to speed heh2k Hypermiling / EcoDriver's Ed 20 08-09-2008 01:32 PM
Turbo to drive accessories? reformed EcoModding Central 14 06-22-2008 04:28 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com